Mixer feeding
Publish: 2021-05-21 06:55:07
1. No, the mixing uniformity of composite multi mineral is not based on the longer the mixing time, the better. It is generally calculated according to the specific gravity of the additive. The mixing time of van der Stuart's Kanglebao composite multi mineral is generally about 3 minutes.
2. Mixer is a kind of mechanical equipment which uses mechanical force and gravity to mix two or more materials evenly. In the mixing process, the contact surface area of materials can be increased to promote the chemical reaction; It can also accelerate physical change. Mixer is widely used in chemical instry, medicine, pesticide, plastics, rubber, chemical fertilizer, building materials, concrete admixture, food, monosodium glutamate, salt, feed, feed additive, dye, metallurgy, mining and other instries. So how to use the mixer correctly
1. For the proction of additive premix, the mixing method should be expanded step by step from micro mixing to small mixing to medium mixing and then to large mixing
the correct order of adding materials should be as follows: first, the components with large proportion are added or most of them are added into the machine, and then a small amount and a small amount of components are added to it; In all kinds of materials, generally the components with large particle size are added to the mixer first, and then the components with small particle size are added; When the specific gravity difference between materials is large, the materials with small specific gravity are usually added first, and then the materials with large specific gravity are added
2. For the fixed container mixer, it is necessary to start the mixer first and then add materials to prevent the phenomenon of full load start-up, and stop the mixer after unloading materials; The rotating container mixer should start after feeding, stop before discharging; For V-type mixer, feeding should be from two feeding ports
measures should be taken to rece the influence of other factors on the mixing uniformity of the finished materials as far as possible: the mixed materials had better be pressed into granules immediately to make the various components of the materials fixed in the granules or packed directly in bags; Avoid or minimize the transportation and drop of mixed materials; The handling work after mixing should be reced to the minimum; Minimize the falling, rolling or sliding of materials; The storage bin after mixing should be as small as possible, and the conveying equipment after mixing should preferably be belt conveyor
3. In order to ensure the mixing quality, the running performance of the mixer should be tested regularly, the bearings and the joints of the movable shafts should be lubricated frequently, the worn-out parts should be repaired and replaced in time, and the best mixing time should be correctly determined according to the sampling results of uniformity. Frequently check the operation of each switch, clean up the debris in the machine, remove the resial materials around the door switch, make the door switch flexible, and eliminate the phenomenon of material leakage.
1. For the proction of additive premix, the mixing method should be expanded step by step from micro mixing to small mixing to medium mixing and then to large mixing
the correct order of adding materials should be as follows: first, the components with large proportion are added or most of them are added into the machine, and then a small amount and a small amount of components are added to it; In all kinds of materials, generally the components with large particle size are added to the mixer first, and then the components with small particle size are added; When the specific gravity difference between materials is large, the materials with small specific gravity are usually added first, and then the materials with large specific gravity are added
2. For the fixed container mixer, it is necessary to start the mixer first and then add materials to prevent the phenomenon of full load start-up, and stop the mixer after unloading materials; The rotating container mixer should start after feeding, stop before discharging; For V-type mixer, feeding should be from two feeding ports
measures should be taken to rece the influence of other factors on the mixing uniformity of the finished materials as far as possible: the mixed materials had better be pressed into granules immediately to make the various components of the materials fixed in the granules or packed directly in bags; Avoid or minimize the transportation and drop of mixed materials; The handling work after mixing should be reced to the minimum; Minimize the falling, rolling or sliding of materials; The storage bin after mixing should be as small as possible, and the conveying equipment after mixing should preferably be belt conveyor
3. In order to ensure the mixing quality, the running performance of the mixer should be tested regularly, the bearings and the joints of the movable shafts should be lubricated frequently, the worn-out parts should be repaired and replaced in time, and the best mixing time should be correctly determined according to the sampling results of uniformity. Frequently check the operation of each switch, clean up the debris in the machine, remove the resial materials around the door switch, make the door switch flexible, and eliminate the phenomenon of material leakage.
3. Sintering process is a comprehensive process of many physical and chemical reactions. There are many factors affecting the change of water and carbon in mixture, so it is necessary to analyze and judge from the phenomenon reflected in the proction process. The moisture content of the mixture is related to the particle size composition, chemical composition, hydrophilicity and seasonal climate conditions. It is also closely related to the ratio of raw materials, especially the ratio of quicklime and hydrated lime, the temperature of the mixture and the storage time of the mixture. When the water content of mixture is the same, the macroscopic phenomenon is that the surface with large particle size seems to have larger water content, while the surface with small particle size seems to have smaller water content. The material with strong hydrophilicity seems to have little water, but in fact it has more water. The material with poor hydrophilicity seems to have more water, but the actual water is not necessarily large
the change of mixture moisture can be observed directly from the head of the machine, and also reflected by the instruments at the head and tail of the machine. Generally, when the water content is too high, the round roller distributor will not discharge smoothly, and the material layer will be thinned automatically. There are flakes behind the distributor, the igniter flame will spray out, there are black spots on the ignition material surface, the negative pressure will increase slightly, and the red fire layer of the sinter bed section at the tail of the machine will become dark, and the strength will become poor. If the water content is too small, the igniter flame will spray out, there will be floating ash on the material surface, the negative pressure of the main pipe will rise, the tail of the machine will appear the phenomenon of "face" and burning through, and the sinter hole will be small and loose
the fuel consumption can be judged directly from the section of tailing layer. When the fuel is suitable, the cross section is normal, there is no divergence, there is no trolley sliding, the red and black layers are clear, and there is no flame. When there is a lot of fuel, the red layer is thick and bright, there are flames, the sinter has a large pore and thin-wall structure, at the same time, the amount of return ore is reced, and the stick trolley is serious. When the fuel is less, the red bed is thin and the red fire layer of the section is dark, the section is loose, the hole is small, the st is large, and the amount of return ore is increased. When the particle size of the fuel is large, some parts are white and bright, some parts are black and loose, and stick to the trolley. From the igniter point of view: when the fuel is long, the material surface red continues long, when the ignition temperature is normal, the material surface is bright and over melted. When the fuel is low, the material surface will darken after the trolley goes out of the igniter, and it will soon turn black. When the ignition temperature is normal, although part of the surface is melted, the upper layer can not be burnt into pieces, and it will be broken once poked. From the instrument point of view: when there is a lot of fuel, the negative pressure of the main pipe will rise, the exhaust gas temperature of the main pipe will rise, and the temperature of the tail air box will also rise. When the fuel is less, the temperature drops and the negative pressure of the main pipe changes little or slightly higher< In summary, experience shows that when water and carbon are suitable, the proction is stable, which is shown as follows:
1. The flame of igniter is evenly and smoothly pumped into the material layer, and the material surface is red to 4-5 bellows after the trolley leaves the igniter. The tail section is neat, the air hole is even, there is no raw meal, and the red part accounts for 1 / 2 of the section
2. When the trolley turns over at the tail of the machine, the sinter is unloaded smoothly without sticking
3. The sinter from the tail of the machine has uniform size and less powder
4. Under the condition of constant thickness of moving material layer, the vertical sintering speed, exhaust gas temperature of large flue and bellows, vacuum degree only fluctuate in a narrow range, and the sintering end point is stable
when the amount of water and carbon is not appropriate, the sintering machine pyrotechnics should contact the mixer pyrotechnics or batching room in time to add or rece water or fuel. At the same time, the lag process of adjusting water or fuel should be considered, and the adjustment should be carried out by increasing or decreasing the material layer, increasing or decreasing the ignition temperature, and increasing or decreasing the machine speed.
the change of mixture moisture can be observed directly from the head of the machine, and also reflected by the instruments at the head and tail of the machine. Generally, when the water content is too high, the round roller distributor will not discharge smoothly, and the material layer will be thinned automatically. There are flakes behind the distributor, the igniter flame will spray out, there are black spots on the ignition material surface, the negative pressure will increase slightly, and the red fire layer of the sinter bed section at the tail of the machine will become dark, and the strength will become poor. If the water content is too small, the igniter flame will spray out, there will be floating ash on the material surface, the negative pressure of the main pipe will rise, the tail of the machine will appear the phenomenon of "face" and burning through, and the sinter hole will be small and loose
the fuel consumption can be judged directly from the section of tailing layer. When the fuel is suitable, the cross section is normal, there is no divergence, there is no trolley sliding, the red and black layers are clear, and there is no flame. When there is a lot of fuel, the red layer is thick and bright, there are flames, the sinter has a large pore and thin-wall structure, at the same time, the amount of return ore is reced, and the stick trolley is serious. When the fuel is less, the red bed is thin and the red fire layer of the section is dark, the section is loose, the hole is small, the st is large, and the amount of return ore is increased. When the particle size of the fuel is large, some parts are white and bright, some parts are black and loose, and stick to the trolley. From the igniter point of view: when the fuel is long, the material surface red continues long, when the ignition temperature is normal, the material surface is bright and over melted. When the fuel is low, the material surface will darken after the trolley goes out of the igniter, and it will soon turn black. When the ignition temperature is normal, although part of the surface is melted, the upper layer can not be burnt into pieces, and it will be broken once poked. From the instrument point of view: when there is a lot of fuel, the negative pressure of the main pipe will rise, the exhaust gas temperature of the main pipe will rise, and the temperature of the tail air box will also rise. When the fuel is less, the temperature drops and the negative pressure of the main pipe changes little or slightly higher< In summary, experience shows that when water and carbon are suitable, the proction is stable, which is shown as follows:
1. The flame of igniter is evenly and smoothly pumped into the material layer, and the material surface is red to 4-5 bellows after the trolley leaves the igniter. The tail section is neat, the air hole is even, there is no raw meal, and the red part accounts for 1 / 2 of the section
2. When the trolley turns over at the tail of the machine, the sinter is unloaded smoothly without sticking
3. The sinter from the tail of the machine has uniform size and less powder
4. Under the condition of constant thickness of moving material layer, the vertical sintering speed, exhaust gas temperature of large flue and bellows, vacuum degree only fluctuate in a narrow range, and the sintering end point is stable
when the amount of water and carbon is not appropriate, the sintering machine pyrotechnics should contact the mixer pyrotechnics or batching room in time to add or rece water or fuel. At the same time, the lag process of adjusting water or fuel should be considered, and the adjustment should be carried out by increasing or decreasing the material layer, increasing or decreasing the ignition temperature, and increasing or decreasing the machine speed.
4. SHJ Series twin-screw cone mixer is a new type of high-efficiency and high-precision particle mixing equipment, which is widely used in chemical instry, pesticide, dye, medicine, food, feed, petroleum, metallurgy, mining and other instries
Zhangjiagang Zhenhua Plastic Machinery Factory is an enterprise procing mixer
Zhangjiagang Zhenhua Plastic Machinery Factory is an enterprise procing mixer
5. 1、 For materials with fine particle size, special attention should be paid to the tightness of the proction equipment, and the resie should also be carefully considered. For example, when using double shaft paddle gravity mixer to mix flour, it is best to choose 90 at the same time ° In order to better ensure the sealing and rece the resie, it is better to use the upper bag exhaust to replace the return air pipe, so as to avoid excessive fine flour ejecting from the return air pipe when mixing< Second, for materials with different specific gravity, in addition to different structural strength and power, the structural forms such as discharge gate, rotor, body and even performance parameters such as rotation speed are often quite different, which can not be simply regarded as local strengthening or power scaling. For example, the double head double-layer wide spiral belt is generally used in the screw belt mixer, while the single-layer staggered spiral belt is commonly used in the mixing of iron red powder. There are also very obvious differences in other structures of the two and the rotation speed< Third, consider the influence of other special physical properties on the selection of equipment. If the material with poor fluidity or more liquid is added, the plow, flying knife, crushing roller and other mechanisms with strong shear mixing effect can be reasonably selected according to the specific situation; The mechanism with fast wear should be wear-resistant or designed to be adjustable and replaceable; The equipment that needs to be cleaned frequently e to material bonding should be equipped with self-cleaning device and convenient cleaning door; For materials whose shape or particle state cannot be destroyed, container rotary mixer is suitable. Mainly depends on convection mixing and diffusion mixing and mixing process is relatively soft equipment and so on< 4. For the materials that need to be heated or accompanied by chemical reaction, in addition to selecting appropriate materials and temperature control structure, attention should also be paid to the influence of temperature change on the equipment mechanism itself. For example, it is better to select the small open door structure for the discharge door. If it is necessary to use the large open door structure, it is necessary to adopt the discharge structure with automatic compensation capacity, such as the inclined wedge discharge door, so as to avoid recing the reliability of the seal e to the heat deformation of the discharge part; At the same time, necessary linear expansion compensation measures should be taken in the design of main shaft and rotor.
6. Kunshan borykai crushing equipment Co., Ltd. is located in Kunshan Economic and Technological Development Zone, with superior geographical location and convenient transportation. Shanghai Nanjing railway and Shanghai Nanjing Expressway cross the south end of the plant area, close to 339 provincial road, 40 km from Shanghai Hongqiao Airport in the East and 51 km from Suzhou Singapore Instrial Park in the West. Our factory is specialized in procing all kinds of air flow pulverizer, air flow vortex pulverizer and single machine st collector. We cooperate with Taiwan businessmen in the design and development of all kinds of crushing machinery. We have strong technical force and complete testing means and sample equipment. The grinder is widely used in chemical instry, medicine, pesticide, non-metal mine, health care procts, food, new materials, electronics and other instries.
7. Crusher is a machine which can crush large size solid raw materials to the required size. The crusher is composed of coarse crushing, fine crushing, wind conveying and other devices, which achieve the purpose of the crusher in the form of high-speed impact. Using wind energy to form powder at one time, the traditional screening procere is cancelled. Mainly used in mining, building materials and other instries. The mixer is a kind of shaft with blades rotating in the cylinder or tank, mixing a variety of raw materials to make it a mixture or suitable consistency machine. There are many kinds of mixers, such as forced mixer, single horizontal shaft mixer, double horizontal shaft mixer and so on.
8. There should be some problems in your design.
1. The yard is 1000 tons in 8 hours. Where is the yard for stacking 1000 tons of flour< The speed, the capacity of 125 tons per hour, and the processing speed of cement are not the same. (of course, wakuang coal mine can be so fast)
I suggest you design a continuous mixer of 2 tons per hour,
1. This design idea mainly lies in the mixer design, but for continuous mixing, its feeding design is very particular, and all kinds of raw materials need to be evenly fed in, Continuous mixing has great advantages in discharging operation, which can make subsequent equipment work stably instead of batch.
3. Continuous mixing can rece startup times and operation process, etc.
4, For yourself, you can master more common knowledge of powder characteristics in the design process
1. The yard is 1000 tons in 8 hours. Where is the yard for stacking 1000 tons of flour< The speed, the capacity of 125 tons per hour, and the processing speed of cement are not the same. (of course, wakuang coal mine can be so fast)
I suggest you design a continuous mixer of 2 tons per hour,
1. This design idea mainly lies in the mixer design, but for continuous mixing, its feeding design is very particular, and all kinds of raw materials need to be evenly fed in, Continuous mixing has great advantages in discharging operation, which can make subsequent equipment work stably instead of batch.
3. Continuous mixing can rece startup times and operation process, etc.
4, For yourself, you can master more common knowledge of powder characteristics in the design process
9. Mineral oil can be changed every six months or 5000 km, and synthetic oil can be changed every year or 10000 km,
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