Provide ore screen straightener
new equipment
ultra-fine laminated autogenous mill
full cross-section airlift micro bubble flotation machine
multi frequency dewatering screen tailings dry discharge
there are many professional mechanical equipment that will be applied in mining operation, which can be roughly divided into mining equipment, mineral processing equipment and prospecting equipment. Mining machinery refers to the machinery directly used for mineral mining and enrichment, including mining machinery and mineral processing machinery. The working principle and structure of prospecting machinery are mostly the same or similar to mining machinery, which is also a kind of mining machinery in a broad sense. A large number of cranes, conveyors, ventilators and drainage machines are also used in mining operations
mining equipment
tunneling includes roadheader / gangue raker / belt conveyor / transfer / crusher, and mining equipment includes shearer, drum shearer, plough, bending scraper conveyor, self moving hydraulic support, bridge conveyor and telescopic belt conveyor / hydraulic support / scraper conveyor, etc.
including mining machinery for mining metal ore and non-metal ore; The oil drilling and proction machinery used for oil exploitation, such as drum shearer, plough, bending scraper conveyor, self moving hydraulic support, bridge type transfer machine and telescopic belt conveyor, can be divided into crushing machinery (cone crusher, jaw crusher, box crusher, impact crusher, etc.), grinding machinery, screening machinery, grinding machinery, grinding machinery, grinding machinery, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding machine, grinding Separation (separation) machinery and dehydration machinery, as well as a variety of proction lines. According to the principle of action, the separation machine is divided into gravity separation machine, magnetic separator, flotation machine and special separation machine. Mineral processing machinery is also used in building materials, chemical instry, glass, ceramics and other instrial sectors. Mineral processing is the process of selecting useful minerals from the collected mineral raw materials according to the differences of physical properties, physicochemical properties and chemical properties of various minerals. The machinery that implements this process is called beneficiation machinery. According to the beneficiation process, beneficiation machinery is divided into crushing, grinding, screening, separation (separation) and dehydration machinery
exploration equipment
mainly includes rotary drilling rig, rotary vertical shaft drilling rig, derrick (drill tower), winch, power engine (motor, diesel engine), mud pump and other equipment, as well as manipulator and pipe twisting machine and other ancillary equipment.
if the delay off time and relay time are adjusted too short, they should be set at 0.2 ~ 0.4 seconds
the strength of the steel bar to be cut is too high. The steel bar that has been cut before can be cut again on the machine to distinguish that the strength of the steel bar to be cut is greater than 750N
Screen does not say "mesh", "mesh" is just a habit of people to describe the screen, it is difficult to overcome. Screen is different from the general mesh procts, that is, it has a strict mesh size, rather than "mesh"
the so-called screen is different from the general mesh procts. But there are strict series mesh sizes. And it has the function of grading and screening the particles, which is in line with the instry, institutions and standards. Screen size is not isolated, it has a series of mesh size composition, the purpose is to grading screening
the screen is woven with metal wire or fiber wire, and the aperture is 0.15 ~ 1 mm. It can remove and recover different types of suspended solids, and screen separation has the advantages of simplicity, high efficiency and low operation cost
is generally used for small-scale wastewater treatment. There are many kinds of screen, the main two are vibrating screen and hydraulic screen
extended data:
work characteristic energy
four functions of metal mesh: screen, filter, protection and fixation. Screen: mainly used in metallurgy, coal, rubber, petroleum, chemical, pharmaceutical, automotive, ceramics, glass and other instries for solid particles, powder, screening, etc
filtration: mainly used for mud screen in petroleum instry, pickling screen in chemical fiber electroplating instry and liquid gas filtration and purification. Protection: mainly used for civil construction batch cement, raising chickens, cks, geese, rabbits and zoo fence
mechanical equipment protection, highway guardrail, stadium fence, road green belt protection net. Solid: can be used in construction instry, highway, bridge as reinforcement and skeleton support
characteristics of metal screen
1, precision knitting
2, mesh rules
3, reliable filtering precision
4, high compressive strength
5, high temperature resistance, chemical corrosion resistance
6, good wear resistance
7, good formability
selection points
screen is the inevitable proct of the refinement of coal mine, iron ore, instry and chemical raw materials, and it is the composition of tiny cells of social development, which indirectly or directly affects the development of society. The selectivity of the screen is mainly based on the characteristics of the screen
the selectivity of screen mainly depends on the characteristics of screen, material, wire diameter, mesh, service life, price, etc. These elements of the screen are related to each other. The diameter of the wire directly affects the service life and price of the screen. The wear resistance, corrosion resistance, high temperature resistance and magnetism of materials are directly related to the price of screen
according to the classification of raw materials
according to the raw materials used, it can be divided into silk screen, metal wire screen and synthetic fiber screen
silk screen
silk screen is made of mulberry silk with different sizes according to specifications, which is woven with full twist, half twist or plain weave, and the weaving method is similar to that of mesh. When the number of mesh is small, it is made up of full skein yarn. When the number of mesh is large, it is made up of half skein yarn or plain weave. The size of silk screen is 4-62 holes / cm, which is mostly used for grain instry and for grinding wheel and emery cloth factory
wire screen
metal screen is a kind of mesh proct made of metal wire through certain technical methods. It is made of copper wire, stainless steel wire, iron wire and steel wire. The diameter of wire is mostly 4-0.025mm
Plain weave, twill weave and mat weave are generally used. The metal screen has clear and correct holes, flat and upright mesh surface, high temperature resistance, wear resistance and other characteristics, and the stainless steel screen can also resist corrosion. Therefore, metal screen is mostly used for powder screening and oil filtration
metal screen
metal screen can be divided into: stainless steel square mesh, stainless steel dense mat mesh, stainless steel embossed mesh and so on. Stainless steel square mesh is widely used in solid material screening and liquid filtration
it involves many instries, such as chemical instry, food and condiment instry, mining instry, pharmacy, papermaking, metal powder manufacturing, fertilizer instry. Stainless steel dense mesh is suitable for gas, liquid filtration and other media separation. It is widely used in precision pressure filter, fuel filter, vacuum filter and other instries
metal screen
metal screen can be divided into: stainless steel square mesh, stainless steel dense mat mesh, stainless steel embossed mesh and so on. Stainless steel square mesh is widely used in solid material screening and liquid filtration
it involves many instries, such as chemical instry, food and condiment instry, mining instry, pharmacy, papermaking, metal powder manufacturing, fertilizer instry. Stainless steel dense mesh is suitable for gas, liquid filtration and other media separation. It is widely used in precision pressure filter, fuel filter, vacuum filter and other instries
manganese steel screen
manganese steel screen: manganese steel is a kind of high-strength anti manganese steel, which is mainly used to withstand the impact, extrusion, material wear and other adverse working conditions. The main form of damage is wear consumption, partial fracture and deformation
There are three types of wear: friction and wear between the surfaces of metal components which contact each other and move; Abrasive wear caused by other metal or nonmetal materials striking metal surface and erosion wear caused by flowing gas or liquid contacting metal The wear resistance of wear-resistant steel depends on the material itself, and the wear resistance of wear-resistant steel is different under different working conditions. The wear resistance of wear-resistant steel depends on the material itself and working conditions
synthetic fiber screen
there are two kinds of synthetic fiber screen: nylon or polyester filament and brown. The filament is made of 15-30 denier monofilament, and the surface of mesh hole is smooth, which is good for filtration. The fabric can be made of plain, square and plain weave, with the specification of 19-104 holes / cm
It can also be used to screen fine particles such as fluorescent powder of picture tube and magnetic powder of magnetic tape. Brown silk screen uses coarse nylon brown silk as raw material, with a diameter of 0.55-0.1 mm. The fabric is mostly plain mat structure, which is used for mineral processing, filtering pulp, conveyor belt, etc. Synthetic fiber screen has the characteristics of no rust and corrosion resistance, which can replace part of metal screenapplication fields
screen application fields are all over instry, science and technology, agriculture and national defense. From the top of science and technology, instry, down to clothing, food, housing and transportation, cultural life, it develops synchronously with the national economy and is closely related to the national economy and people's livelihood. Mainly used in: aviation, aerospace, printing, dyeing, electronics, mining, pharmaceutical, food, food processing, chemical instry
source of reference: network screen
1. Mineral processing: it is a process of separating useful minerals from gangue minerals by means of various mineral processing equipment based on the differences of physical or chemical properties of minerals, and achieving relative enrichment of useful minerals< Gravity beneficiation: it is a method to achieve separation according to the movement speed and trajectory of minerals with different densities in the medium
3. Flotation beneficiation: it is a method of mineral separation in flotation machine by adding appropriate reagents according to the different wettability of mineral surface
4. Magnetic separation: it is a method of separation in a magnetic separator according to the different magnetic properties of minerals
5. Taste: refers to the ratio of the weight of metal or valuable components in the proct to the total weight of the proct
6. Yield: the ratio of proct weight to raw ore weight
7. Beneficiation ratio: the ratio of raw ore weight to concentrate weight
8. Rich ore ratio: the ratio of the percentage of useful component content in concentrate to that in raw ore
9. Recovery: the percentage of the weight ratio of the metal in the concentrate to that in the raw ore
10. Free settlement: when the pulp concentration is low, the direct interference between the surrounding ore particles and the wall is negligible except for the medium resistance, which is called free settlement
11. Interference settlement: when the slurry concentration increases, the particles are directly rubbed and collided by the surrounding particles, and the interference from the medium they pass through increases. Moreover, the higher the concentration is, the greater the mechanical resistance is, and the stronger the interference effect is. At this time, the settlement is called interference settlement
12. Separation particle size: screen or analyze the graded procts, and take the extremely narrow particle size with 50% distribution ratio in grit and overflow as the boundary size
13. Graded grain size: the grain size of the standard mineral whose settling velocity is equal to the ascending water velocity represents the boundary grain size
14. Classification efficiency: the accuracy of hydraulic classification process can be expressed by classification efficiency
15. Grading quality efficiency:
16. Grading quantity efficiency: the grading efficiency calculated by the recovery rate of fine grade in overflow only reflects the variation relationship of quantity in the grading process, expressed by e quantity
17. Jigging cycle: the rapid movement of water completes a cycle, which is called a jigging cycle
18. Shaker beneficiation: according to the density of minerals, the characteristics of stratification in the transverse jigging flow along the inclined plane, and the vertical shaking and bed surface
19. Heavy medium beneficiation: a beneficiation method in which the mineral particles are separated according to the density in the liquid or suspension with relative density greater than 1
20. Contact angle: at the boundary point between the solid surface contacted by the liquid and the gas, make a tangent line along the surface of the droplet or bubble, then the angle between the tangent line and the solid surface on the liquid side is called the contact angle
21. Bubble mineralization: a process in which bubbles graally adhere to ore particles
22. Hydrophobic minerals: minerals that are not easily wetted by water
23. Hydrophilic minerals: minerals easily wetted by water
24. Magnetization roasting: it is a process of converting weak magnetic iron ore into strong magnetic iron ore under certain conditions at high temperature
25. Trickling furnace: the phenomenon that the roasted ore is automatically discharged out of the furnace without the control of the discharge roller is called trickling furnace< Smelting furnace: the temperature of the ore heated in the furnace is too high, exceeding its softening point to form a molten state, or the local temperature is too high, resulting in ore
27. Specific magnetization coefficient: according to the magnetic moment of the unit mass object magnetized in the external magnetic field of the unit magnetic field intensity, that is, the magnetic coefficient of the object.
2< br />1． The beneficiation process consists of pre beneficiation (ore preparation operation), (beneficiation operation) and post beneficiation (dewatering operation)< br />2． The technological indexes of mineral processing include (grade), (proct rate), (beneficiation ratio), (rich ore ratio) and (recovery rate)< br />3． Gravity beneficiation is based on the (density) (particle size) of various minerals, which is related to the (particle shape) of minerals to a certain extent< br />4． The media commonly used in gravity mineral processing are (water), (air), (heavy liquid), (heavy suspension)< br />5． In the classification operation, the medium operation forms are (vertical upward), (nearly horizontal), (rotary movement)< br />6． Hydrocyclone is the most effective (fine) classification equipment at present< br />7． Jigging beneficiation is one of the main methods of gravity beneficiation, which is widely used in the separation of (coarse) materials< br />8． Shaking table beneficiation is one of the most successful and widely used gravity beneficiation methods for separating (fine) ores< br />9． The structure of the head of the shaker is (cam lever shaker), (eccentric connecting rod shaker) and (spring shaker)< br />10． Shaker bed surface mainly has (cloud tin bed surface), (6-s bed surface), (spring bed surface)< br />11． The characteristics of Yunxi coarse sand bed are (three slopes and four levels), Yunxi fine sand bed is (one slope and two levels), and Yunxi groove bed is (one slope and two levels). 6-s bed surface characteristics (uneven). The characteristics of spring bed surface are (different density)< br />12． The supporting mechanism of shaking table has four ways: sliding support, rolling support, rocking support and elastic support. 6-s uses rocking support< br />13． The properties of heavy suspension include density, viscosity and stability< br />14． Gravity beneficiation process includes (ore washing), (desliming), (grinding), (classification), (separation) and other beneficiation operations< br />15． The flotation system includes solid phase, gas phase and liquid phase< br />16． The relationship between lattice type and floatability of minerals (molecular lattice) & gt Metal lattice) & gt Covalent lattice) & gt Ionic lattice)< br />17． The reasons of potential difference between solid and liquid surfaces in flotation system are preferential dissociation, preferential adsorption and lattice substitution< br />18． The commonly used collectors of sulfide minerals are xanthate, black agent, sulfur nitrogen, sulfur nitrogen grease and other grease< br />19． The commonly used foaming agents are (pine oil and terpineol oil) (cresol acid) (heavy pyridine) (alcohol foaming agent), etc.
20 Commonly used inhibitors are cyanide, zinc sulfate, argon sulfuric acid, dichromate, sodium sulfide and low combination inhibitors< br />21． The functions of sodium sulfide in flotation are (activation), (inhibition) and (drug removal)< br />22． Commonly used pH regulators are (lime), (sodium carbonate), (caustic soda), (sulfuric acid)< br />23． The commonly used collectors for oxidized minerals are (carboxylic acids) (hydroxy acids) (amines and ether amines) (hydrocarbons)< br />24． Carboxylic acid collectors include (animal and plant fatty acids), (tall oil), (petroleum fraction oxidation soap) and (petroleum fermentation fatty acids)< br />25． The flotation methods of iron ore include (positive flotation with anionic collector), (reverse flotation with anionic collector), (reverse flotation with cationic collector) and (selective flocculation flotation)< br />26． According to the different useful components, copper related ores can be divided into the following categories: single copper ore, copper sulfide ore, copper pyrite ore, copper molybdenum ore, copper nickel ore and copper cobalt ore< br />27． The basic condition of magnetic separation is (the magnetic force of magnetic particles) & gt The resultant force of the mechanical force in the opposite direction of the magnetic force on the magnetic particle< br />28． According to the size of magnetism, minerals can be divided into (strong magnetic minerals), (medium magnetic minerals), (weak magnetic minerals) and (non-magnetic minerals)< br />29． The important types of iron deposits in China are Anshan type, Xuanlong type, Daye type, Damiao type, Bayan Obo type and Jingtieshan type< br />30． Sampling objects can be divided into static materials and moving materials. Different sampling methods should be used for different sampling objects< br />31． The sampling methods of massive material pile include (scooping method) and (exploratory well method)< br />32． There are four proceres for sample processing: screening, crushing, mixing and shrinking< br />33． There are three methods of sample mixing (moving cone method), (ring cone method) and rolling method)< br />34． The common methods of sample rection are (quartering method), (multi slot sampler method) and (grid method)< br />35． Weakly magnetic iron ores mainly include hematite, limonite, siderite and Specularite, which are collectively referred to as hematite< br />36． Commonly used gravity mineral processing equipment (hydraulic classification), (jigging mineral processing), (chute mineral processing), (shaker mineral processing), (heavy medium mineral processing), etc< br />37． Commonly used magnetic separation equipment (permanent magnetic drum magnetic separator), (magnetic dewatering tank), (magnetic agglomeration gravity separator), (magnetic separation column), etc< br />38． The magnetization roasting equipment includes Anshan type shaft furnace, rotary furnace, slope type roasting furnace and boiling roasting furnace< br />39． The flotation processes of copper sulfur ore include (preferential flotation), (mixed separation flotation) and (semi preferential mixed separation flotation)< br />40． The separation principle of copper sulfur mixed concentrate is (floating copper and restraining sulfur), that is, restraining (Pyrite)< br />41． The relative density of mineral can be determined by drying method or concentration pot method< br />42． In the gravity separation process, the principle of early recovery and more recovery should be implemented for concentrate, and the principle of early loss should be implemented for tailings< br />43． The characteristics of iron ore in China are (poor), (Miscellaneous) and (fine)< br />44． Low intensity magnetic separation equipment adopts (open) magnetic system, and high intensity magnetic separation equipment adopts (closed) magnetic system< br />45． According to the solubility proct of ethylxanthate, the common metals can be divided into three categories. The metals with smaller solubility proct include (gold), (silver), (mercury), (copper), (lead), (cadmium), (bismuth), the metals with medium solubility proct include (zinc), (iron), (manganese), and the metals with larger solubility proct include (calcium), (magnesium), (barium)< 3. Answer the questions
1. What is the difference between hydraulic classification and screening
A: in proction practice, the feeding of hydraulic classification is composed of particle size groups with different particle size, density and shape. The settling velocity of ore particles is not only related to particle size, but also to density, shape and settling conditions. Therefore, the classification procts are different from the screening procts, which are not uniform particles, but isostatic particles with the same settling velocity, that is, the particles with higher relative density are smaller, and the particles with lower relative density are larger
screening is mostly used to deal with materials larger than 2-3mm. As the proctivity and screening efficiency of fine materials are very low, the screen is not easy to manufacture, and the strength of the screen surface is not enough, hydraulic classification is often used for materials less than 2-3mm
2. What are the factors that affect the performance of hydrocyclone
A: the inner diameter of the hydrocyclone; Size and shape of feed mouth; Overflow pipe diameter and insertion depth; Diameter of desilting mouth; Column height; The cone angle of hydrocyclone; Feed pressure; The particle size composition of the feed; Feed concentration
3. What are the commonly used jigging cycle curves
A: asymmetric jigging cycle curve with high rising water speed and long action time; The results show that the rising water velocity is greater than the falling water velocity and the action time is equal; The results show that the jigging cycle curve is characterized by high rising water velocity, short action time, low falling water velocity and long action time; Complex vibration jig cycle
Jaw crusher (jawbone) has the characteristics of large crushing ratio, uniform proct size, simple structure, reliable operation, simple maintenance and economic operation cost. It is widely used in mining, smelting, building materials, highway, railway, water conservancy and chemical instry. Crushing all kinds of materials with compressive strength less than 350 MPa is the first choice of primary crushing equipment in complete crushing proction line< Advantages and characteristics:
1 short elbow plate,
2 low suspension,
3 large swing angle,
4 long service life,
5 convenient maintenance
impact crusher is a kind of high-efficiency and energy-saving crushing equipment. Its feature is that the crushing operation can make full use of the energy of the whole rotor, rely on the high-speed rotating plate hammer to strike and eject the material, repeatedly hit the impact plate, and the impact between the materials makes the material get multiple impact and broken, so the crushing ratio is large, and has the role of selective crushing. Most of its procts are cubic, with uniform particle size. It is widely used for crushing limestone, dolomite, shale, sandstone, coal, asbestos and other operations in building materials, chemical instry, coal, coke and other instrial sectors< Advantages and characteristics:
1. Hard rock crushing
2. Keyless connection
3. Unique impact lining plate
4. High wear resistant plate hammer
5. Hydraulic or manual opening
s series cone crusher is the most widely used cone crusher at present. Because of its reliable operation and good performance, it is widely used in mines and gravel yards all over the world. S series standard and short head cone crushers can be fed at full load. S series multi cylinder cone crusher realizes safety and adjustment of discharge port and crushing cavity cleaning by hydraulic pressure, which is safe, reliable, fast, convenient and labor-saving
advantages and characteristics:
1 large crushing force
2 high output
3 many crushing cavities, uniform proct size and good stone shape
4 low maintenance cost
this series of cone crushers are advanced cone crushers developed by Leimeng through absorbing the world's advanced crushing technology. This proct is widely used in metallurgy, construction, hydropower, transportation, chemical instry, building materials instry, suitable for crushing hard, medium hardness above all kinds of ores and rocks
advantages and characteristics:
1. Higher proction capacity and higher quality
2. Rece downtime
3. Easy to maintain and low maintenance cost
4. It can be used in medium crushing, fine crushing and ultra-fine operation, providing unparalleled crushing performance
LM impact crusher is a high energy and low consumption equipment with international advanced level developed by Raymond on the basis of years of research and development of mining machinery and equipment and absorbing the advanced technology of similar procts of bamak company of the United States. Its performance plays an irreplaceable role in various ore crushing equipment
LM series vertical shaft impact crusher has a long history of design and proction in China, with the characteristics of high reliability, convenient use, installation and maintenance, and various crushing forms (stone, stone and iron) to meet the different crushing needs of users; A variety of components to choose from, key components using foreign well-known brands; Large area of materials suitable for crushing; The operation and maintenance cost is low and the economy is good; Energy saving, environmental protection, without any additional devices and other features. It is not only widely used in extremely hard materials. It is more suitable for the fine and ultra-fine crushing of artificial sand making, pre grinding cement, refractories and other instries with great differences in material properties. Such as granite, basalt, limestone, quartzite, gneiss, cement clinker, concrete aggregate, ceramic raw materials, iron ore, gold ore, copper ore, corunm, bauxite, silica, etc
the proction of rotary crusher has a history of 100 years. Compared with hammer crusher, its proct size is uniform, the wear of crushing wall is small, the operation rate is high, and the proction capacity can be as high as 3-4 times. Due to the adoption of direct turning feeding, the crushing process can be selected as the first choice for large and medium-sized mines and other instries to crush all kinds of hard materials without raw ore bin, feeder and other proction facilities
hydraulic rotary crushers are usually proced, that is, the hydraulic device is installed at the lower part of the frame to support the crushing hammer. By using the energy storage hydraulic system, the safety insurance of the crusher and the adjustment of the discharge port are realized, which overcomes the shortcomings of the unreliable safety device and the troublesome adjustment of the discharge port of the original hanging shaft type rotary crusher, and radiates the new life of the rotary crusher
advantages and characteristics
1 the proct size is uniform
2 the wear of crushing wall is small
3 the operation rate is high
4 the proction capacity is strong
the motion track of vibrating screen is circular, which is specially designed for screening stone in quarry, and can also be used for proct classification in coal preparation, mineral processing, building materials, electric power and chemical instry departments. Our procts are characterized by advanced structure, strong exciting force, low vibration noise, easy maintenance and rability< Advantages and characteristics:
1 good vibration amplitude adjustment,
2 uniform screening,
3 large processing capacity,
4 reasonable structure,
5 rable
the feeders proced by our company are divided into two types: vibrating feeder and linear feeder. The vibrating feeder series adopts two vibrating motors. The user can freely adjust the vibration frequency of the feeder, so as to completely control the feeding speed of stone and ensure the smooth operation of the whole proction line. The linear vibration feeder has the characteristics of stable vibration, reliable operation and long service life
it can provide continuous and uniform feeding for crushed stone machinery, and coarse screening for materials. It is widely used in crushed stone and screening combined equipment in mineral processing, building materials, silicate and chemical work< Advantages and characteristics:
1 simple and reasonable structure,
2 convenient maintenance,
3 continuous and uniform material
the spiral sand washer is suitable for screening, grading and impurity removal in metallurgy, building materials, hydropower and other instries. Used for washing of fine and coarse materials. It is especially suitable for building sand and road sand. The spiral sand washer has the advantages of small power consumption, high cleanliness, good sealing structure, fully enclosed transmission device and adjustable weir plate, which ensure the high efficiency and rability of the proct, good cleaning and dehydration effect, and stable fine proct< Advantages and characteristics:
the spiral sand washer has reasonable structure, convenient maintenance, large capacity, low power consumption and high cleanliness. The novel sealing structure, fully enclosed oil bath transmission device and adjustable overflow weir plate ensure the high efficiency, rability, good cleaning and dehydration effect of the series procts
the impeller sand washer is a washing equipment for treating ore and slag particles. The sand washing machine is widely used in sand and gravel plant, mining, building materials, transportation, chemical instry, water conservancy and hydropower, concrete mixing plant and other instries
advantages and characteristics
1 the structure of the sand washer is simple, and the impeller drive shaft device is isolated from water and water receiving materials, which greatly avoids the phenomenon of bearing damage caused by water immersion, sand and pollutants
2: the loss of washed sand and stone powder is very little, so the grading and fineness molus of washed construction sand meet the national standards of "construction sand" and "pebble and gravel for construction"
3: except for the screen, the machine has almost no vulnerable parts
4: it has a long service life and needs no maintenance for a long time
belt conveyor has the advantages of large conveying capacity, simple structure, convenient maintenance and standardized components. It is widely used in mining, metallurgy, coal and other departments to transport loose materials or pieces of goods
according to the requirements of conveying process, the horizontal or inclined conveying system can be composed of single conveying equipment, multiple combination or other conveying equipment to meet the needs of different layout types of operation lines. The belt conveyor can be used in the range of ambient temperature - 20 - 40 ℃, and the temperature of conveying materials is below 50 ℃< Advantages and characteristics:
1 large conveying capacity,
2 simple structure,
3 convenient maintenance,
4 parts standardization
ball mills are widely used in metal and nonmetal mines, building materials and other departments to grind various ores or rocks. Leimeng ball mill has three types: wet lattice type, dry lattice type and overflow type. Leimeng introced advanced technology, combined with the company's many years of design and manufacturing experience, designed a new generation of ball mill with high efficiency, low energy consumption, long service life, and equipped with complete low-speed drive, jacking device, high and low-pressure oil station and other auxiliary equipment
the company can design and manufacture ball mills of various specifications according to the requirements of users
LM series fine sand recovery device is a fine sand recovery machine with international advanced level designed by our company by absorbing foreign advanced technology and combining with the actual situation of our country. It is widely used in mud purification, sand aggregate system of hydropower station, glass raw material processing system, artificial sand proction line, coarse coal slime recovery and environmental protection engineering of coal preparation plant, shield machine (mud purification), metal box and non-metal dressing field tailings dry discharge treatment, etc
advantages and characteristics:
1 in the wet proction process of artificial sand, the loss of a large amount of sand brings great pressure to the environment. In order to solve this problem, the LM fine sand recovery system proced by our company can effectively rece the loss of fine particles, and solve the problems of high fineness molus and low stone powder content in the finished procts
2 using fine sand recovery system can not only make full use of resources, but also rece the pollution of working environment and the workload of sedimentation tank. Up to 85% of the total amount of fine particles can be recovered, which has incomparable technical and economic advantages compared with other equipment
in the traditional beneficiation process, most of the tailings are crushed to less than 0.2mm by crusher, and the concentrate is extracted by water-soluble magnetic separation or shaking table, while most of the tailings are solved by building dams and reservoirs. According to the above situation and the national environmental requirements, our company has designed a tailings dry discharge system, through which the tailings can be directly stacked and discharged, It greatly reces the proction cost of mineral processing, effectively controls the content of water in mineral processing, solves the problem of tailings pollution to the environment, and meets the requirements of environmental protection
according to the site conditions, the size of dewatering screen can be increased to improve the water content of tailings
LMZ series dewatering screen is a screening equipment developed by our company for dewatering, desmearing and desliming of slurry materials. The running track of the screen box is approximately straight
the power unit of LMZ series dewatering screen can be directly driven by vibrating motor (smaller model) or driven by ordinary motor through coupling. The screen surface is made of stainless steel, nylon, polyurethane and other materials, which can be selected according to the actual situation of users
LMZ series screen machines can be installed in various ways, such as support type, hanging type and combination of suspension seat. If the user does not make a special declaration, the default is support type
LMZ series dewatering screen is suitable for tailings treatment, coal washing, water washing quartz sand, mud dewatering and other aspects of medium removal, dewatering and desliming treatment< Advantages and characteristics:
1 compact results, high stiffness and strength of the whole machine,
2 relatively small volume, large processing capacity for replacement area, convenient for system process layout,
3 relatively time-consuming, high dehydration rate,
4 molar design of screen surface structure and type, convenient for replacement< br />
1. Application conditions: the applicant applying for RMB circulation should meet the following conditions:
(1) an enterprise legal person established in accordance with the law within the territory of the people's Republic of China< (2) the registered capital shall not be less than RMB 500000< 2. Application materials: applicants applying for circulating RMB should apply to the local branches of the people's Bank of China and submit the following documents and certificates:
(1) decisions of the decision-making level of the enterprise
(2) business license of enterprise legal person or approval notice of enterprise name< (3) identification of the legal representative of the enterprise< (4) capital credit certificate, capital verification certificate or capital guarantee< Third, licensing proceres: branches of the people's Bank of China shall conct preliminary examination on the application materials submitted by the applicant in accordance with the relevant provisions of the measures for the implementation of administrative licensing of the people's Bank of China and the measures for the administration of the operation, binding and circulation of RMB. The people's Bank of China shall issue a business license to the applicant who applies for the operation and circulation of RMB in accordance with the provisions of the administrative measures for the operation, binding and circulation of RMB< 4. Charging basis and standard: no charging 5. Promised processing time: in accordance with the relevant provisions of the measures for the implementation of administrative license of the people's Bank of China< 6. Sponsor and contact information: branches of the people's Bank of China, business management department and central sub branches of provincial capitals.