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1. When applying for online banking, the bank will give the user u treasure and send the certificate authorization code to the user's mobile phone. The following examples are subject to enterprise users, and personal users' u-treasure activation and certificate download are similar

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The proction process of Portland cement is representative in cement proction. Limestone and clay are used as the main raw materials, which are crushed, proportioned and ground into raw meal, then fed into cement kiln to calcine mature material, and then ground into clinker with appropriate amount of gypsum (sometimes mixed materials or additives)
cement proction can be divided into dry process (including semi dry process) and wet process (including semi wet process) according to different raw meal preparation methods< (1) dry proction. The raw materials are dried and ground at the same time, or dried and ground into raw meal powder first, and then fed into dry kiln for calcination. However, there is also a method that raw meal powder is made into raw meal ball by adding appropriate amount of water and then sent to libol kiln for calcination to form clinker, which is called semi dry process and still belongs to dry process
new dry process cement
the new dry process cement proction line refers to the cement proced by the new process of decomposition outside the kiln. With suspension preheater and kiln decomposition technology as the core, new raw materials, fuel homogenization and energy-saving grinding technology and equipment are adopted in the proction, and computer distributed control is adopted in the whole line to realize automation, high efficiency, high quality, low consumption and environmental protection of cement proction process
the new dry process cement proction technology was developed in the 1950s. In Japan, Germany and other developed countries, the new dry process cement clinker proction equipment with suspension preheating and precalciner as the core accounted for 95%. The first suspension preheating and precalciner kiln in China was put into operation in 1976. The advantages of this technology are: rapid heat transfer, high thermal efficiency, large output per unit volume and low heat consumption< (2) wet proction. The raw material is grinded into raw slurry by adding water powder and then fed into wet kiln to calcine mature material. There is also a method of dehydrating the raw slurry prepared by wet method to make raw material block and calcine mature material in kiln, which is called semi wet method and still belongs to wet proction
the main advantages of dry process proction are low heat consumption (for example, the heat consumption of dry process kiln clinker with preheater is 3140-3768 coke / kg), and the disadvantages are that the raw meal composition is not easy to be uniform, the workshop st is large, and the power consumption is high. Wet proction has the advantages of simple operation, easy control of raw meal composition, good proct quality, convenient slurry transportation and less st in the workshop, but the disadvantage is high heat consumption (the heat consumption of clinker is usually 5234-6490 coke / kg)
the proction of cement can be divided into three processes: raw meal preparation, clinker calcination and cement proction. The whole proction process can be summarized as "two grinding and one burning". There are mainly two kinds of equipment for calcining clinker: shaft kiln and rotary kiln. Shaft kiln is suitable for small-scale factories, and rotary kiln is suitable for large and medium-sized factories< (1) vertical kiln:
the vertical kiln without rotation is called vertical kiln. It can be divided into ordinary shaft kiln and mechanized shaft kiln. Ordinary shaft kiln is manual feeding and manual discharging or mechanical feeding and manual discharging; Mechanical shaft kiln is mechanical feeding and mechanical unloading. Mechanical shaft kiln is a continuous operation, its proction, quality and labor proctivity are higher than ordinary shaft kiln. Most of foreign vertical kilns have been replaced by rotary kilns, but they still occupy an important position in China's cement instry. According to the requirements of building materials technology policy, mechanized shaft kiln is used in small cement plants to graally replace ordinary shaft kiln< (2) rotary kiln:
a rotary kiln is one in which the kiln barrel is horizontal (slightly inclined, about 3%) and can rotate. It is divided into dry kiln for calcining raw meal powder and wet kiln for calcining slurry (water content is about 35%)< Dry process kiln can be divided into hollow kiln, waste heat boiler kiln, suspension preheater kiln and suspension decomposition kiln. Around the 1970s, a calcination process outside the kiln, which can greatly increase the output of rotary kiln, was developed. It is characterized by the use of precalciner kiln, which is based on suspension preheater kiln, adding precalciner between preheater and kiln. By adding 50-60% of the total fuel consumption into the calciner, the fuel combustion process, raw meal preheating and carbonate decomposition process are moved to the calciner from the zone with low heat transfer efficiency in the kiln. The raw meal exchanges heat with the hot gas flow in suspension or boiling state, so as to improve the heat transfer efficiency, and the decomposition rate of calcium carbonate of raw meal before entering the kiln is more than 80%, It can rece the heat load of the kiln, prolong the service life of the kiln lining and the operation cycle of the kiln, and greatly increase the output while maintaining the heating capacity of the kiln< The cement kiln used in wet proction is called wet kiln. Wet proction is to make raw meal into slurry with water content of 32% ~ 40%. Because the slurry with fluidity is prepared, the raw materials are well mixed, the raw meal composition is uniform, and the clinker quality is high, which is the main advantage of wet proction
wet kilns can be divided into long wet kilns and short wet kilns with slurry evaporators. In order to rece the heat consumption of long wet kiln, various types of heat exchangers are installed in the kiln, such as chain, slurry filter preheater, metal or ceramic heat exchanger. The fine grinding of cement clinker usually adopts circle flow grinding process (i.e. closed-circuit operation system). In order to prevent the st from flying in proction, cement plants are equipped with st collection equipment. Electric st collector, bag st collector and cyclone st collector are commonly used in cement plant
e to the adoption of new technology and equipment in raw material pre homogenization, raw meal powder homogenization transportation and st collection, especially the appearance of out of kiln decomposition technology, a new dry proction process is proced. With this new technology, the clinker quality of dry proction is no less than that of wet proction, and the power consumption is also reced, which has become the development trend of cement instry in various countries
for example (shaft kiln)
after the raw materials and fuels enter the plant, they are sampled, analyzed and inspected by the laboratory. At the same time, they are homogenized according to the quality and stored in the raw material storage shed. Clay, coal and pyrite powder are dried to the process index value by the dryer, and then lifted to the corresponding raw material storage by the elevator. After two-stage crushing, limestone, fluorite and gypsum are sent to their respective storage by hoist
according to the quality of limestone, clay, anthracite, fluorite and pyrite powder, the laboratory calculates the process formula. The raw meal is proportioned through the raw meal microcomputer proportioning system. The raw meal is ground by the raw meal mill. The percentages of Cao, Fe2O3 and fineness of the raw meal are sampled and tested every hour for timely adjustment, All the data meet the requirements of process formula. According to the quality of the raw meal, the laboratory homogenizes the raw meal by means of multi silo collocation and mechanical mping. The raw meal is put into two raw meal homogenization silos by the elevator. The raw meal is matched by the two homogenization silos, and the raw meal is lifted to the pelletizing tray bin. The pre water pelletizing control device on the shaft kiln surface is used to mix the raw meal and water, The raw meal is pelletized through the pelletizing plate. The raw meal balls are distributed in different positions of the kiln by the distributor of the vertical kiln for calcination, and the clinker is sent to the clinker crusher for crushing through the discharge pipe and the scaler, and the chemical and physical analysis of the clinker is carried out once an hour by the laboratory
according to the quality of clinker, it is put into the corresponding clinker storehouse by the hoist. Meanwhile, according to the proction and operation requirements and the market situation of building materials, the laboratory carries out cement proportioning of clinker, gypsum and slag through the clinker microcomputer proportioning system. The cement mill grinds 425 and 525 ordinary portland cement respectively, and samples are taken every hour for analysis and inspection. The ground cement is lifted into three cement silos by bucket elevator. According to the quality of the ground cement, the laboratory homogenizes the cement by multi silo collocation and mechanical mping. It is sent to two cement homogenization warehouses by hoist, and then matched by two cement homogenization warehouses. The cement is packaged by microcomputer controlled packing machine. The packaged bagged cement is stored in the finished proct warehouse, and the cement delivery notice is issued after passing the test and sampling inspection

National specification: 240 × one hundred and fifteen × 53 (other special-shaped specifications can be customized according to the user's requirements)

technological process: batching → mixing → conveying → feeding → forming → transporting → stacking → curing → finished procts

detailed introction of process flow: all kinds of raw materials are put into the hopper of the feeder according to the proportion, and are sent to the rotary mixing mixer by the elevator. After rolling and mixing for a certain time, the discharge door is opened, and the mixed materials are transported to the bin above the feeder through the belt conveyor. The head of the belt conveyor is equipped with a permanent magnetic pulley, which can separate the iron blocks in the materials, so as not to damage the brick machine

extended data

no need to sinter, natural curing and normal temperature steaming curing are available. The finished unburned brick proced by the equipment meets the brick standard of building materials instry. It is an ideal equipment for comprehensive treatment and utilization of waste resie, elimination of environmental pollution, saving land resources, promoting employment of urban and rural labor force and making a fortune

the main supporting equipment for the proction line of unburned brick is the unburned brick machine, commonly known as the brick press or brick making machine, which is the main equipment for the proction of unburned brick, mainly divided into rotary table machine, vacuum extruder and automatic hydraulic molding machine. Due to the high degree of automation, large pressing force, good proct quality and high output, the full-automatic hydraulic molding machine has become the preferred equipment for non fired brick proction line

the machine has a wide range of material applicability, and can use a variety of materials to prepare unburned bricks; This kind of equipment has the characteristics of compact structure, big pressing force, strong rigidity, full sealing, stproof, circulating lubrication, simple operation, high output and rable. Feeding mechanism speed change, rotary disc rotation and other parts of the most advanced technology, large power transmission, smooth operation, accurate in place, low maintenance rate

it is mainly used for the proction of unburned brick, steam cured sand brick, refractory brick and hollow brick with fly ash, river sand, sea sand, mountain sand, mineral powder and slag as the main raw materials, and it is an environmental protection building material equipment strongly mediated by the state