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Slag Micro Powder Vertical Mill

The development of the solid waste residue industry, the special dry process vertical mill for equipment in the slag powder industry is a new type of grinding mill that increases production and reduces consumption. It has high grinding efficiency, fast powder selection efficiency, and fine classification accuracy. It is favored by the industry and is the promotion of solid waste residue The new vertical mill developed by the industry.   A new generation of vertical mills, ultra-fine mills and other equipment not only have high grinding efficiency, but also have the advantages of green environmental protection, low noise, increased production and efficiency, and low civil construction costs. Cement raw meal, clinker, manganese ore and many more markets.   The slag micropowder does not need to go through the crushing process in the production, because the size of the raw material is small, but because the slag is a by-product of the blast furnace ironmaking process, the humidity is high, so it needs to go through a drying operation, and the dried raw materials are added to the machine through conveying equipment. Grinding is carried out in the pulverizer, and the finished product is transported to the finished product warehouse for storage. Therefore, the production process of slag micropowder mainly includes the following parts: feeding, conveying, drying, grinding, collecting powder, warehousing, etc.   The vertical pulverizer has the advantages of high grinding efficiency, low power consumption, large feeding particle size, easy adjustment of product fineness, simple equipment process, small footprint, low noise, small dust, easy use and maintenance, and low operating costs. Advantages such as less consumption of wear-resistant materials. Can be widely used in electric power, metallurgy, cement, chemical industry, non-metallic minerals and other industries, mainly used for cement raw meal, clinker, power plant desulfurization limestone powder, slag powder, manganese ore, gypsum, coal, barite, calcite, aluminum Bauxite and other materials are ground for processing.   The vertical mill system is composed of main engine, feeder, classifier, blower, piping device, storage hopper, electric control system, collection system, etc. The pressurizing device is designed and manufactured in a standardized module type. With the increase of the vertical mill production capacity, the number of grinding rollers of the vertical mill is correspondingly increased. The motor-driven reducer can be used to drive the grinding disc to rotate, and the material moves around the grinding disc under the action of centrifugal force. Entering between the grinding roller and the grinding disc, under the pressure of the grinding roller, the material is crushed by extrusion, grinding and shearing force. The coarse ones still fall into the main machine for regrinding, and those with fineness that meet the specifications flow into the pulse dust collector with the wind. After collection, they are discharged through the powder outlet pipe to be the finished product. The purified air flows through the pipeline on the pulse collector and flows into the blower before being discharged into the air blower. atmosphere.   Whether the equipment used in the production of slag micropowder, whether it is a feeder or a pulverizer, whether the model selection is reasonable, is related to the revenue of slag micropowder production. Generally, when configuring the slag micropowder preparation process, the main reference is the size of the production capacity, the quality of the finished product and other factors, and the appropriate production line is selected to ensure the smooth production.

2022

08/04

Can vertical mills process silica powder? What are the processes of silica grinding?

Silica is the collective name for vein quartz, quartzite and quartz sand. Mainly used for acid refractory bricks used in the metallurgical industry. Pure silica can be used as glass or as refined monocrystalline silicon. Silica is an important chemical raw material with high hardness and can be used in metallurgical industry, building materials industry and other chemical industries after being ground into powder.   Can vertical mills process silica powder? Vertical mills can process silica powder. From stone to powder, silica needs to be pulverized and ground, and the silica pulverizer is the main processing equipment, which is used to grind the pulverized silica into silica powder of different meshes. Vertical mill is a commonly used grinding equipment, of course, it can also be used for the processing of silica powder. Vertical mill is also called vertical pulverizer, which integrates crushing, drying, grinding, grading and conveying. , slag as the focus. What are the processes of silica grinding? Working principle: The motor drives the grinding disc to rotate through the reducer, the material falls into the center of the grinding disc from the feed inlet, and the hot air enters the mill from the air inlet. Under the action of centrifugal force, the material moves to the edge of the grinding disc, and is crushed by the grinding roller when passing through the annular groove on the grinding disc. The crushed material is carried by the high-speed airflow at the air ring at the edge of the grinding disc, and the large particles fall directly on the grinding disc. Re-grinding, when the material in the airflow passes through the dynamic and static separator, under the action of the rotating rotor, the coarse powder falls on the grinding disc for re-grinding, and the qualified fine powder is ground together with the airflow and collected in the powder collecting device, which is product. Moisture-containing materials are dried during contact with hot gas to achieve the required product moisture.

2022

08/04

What should I do if the production efficiency of the vertical mill is low?

What should I do if the production efficiency of the vertical mill is low? What should I do if the mill capacity is small? What is the reason for the low powder output efficiency of the pulverizer? How to solve? In the field of powder processing, it seems that the production capacity of the pulverizer cannot meet the production requirements, which seems to be a common problem for everyone, which seriously affects the production efficiency. Today, I will introduce this problem in detail.   1. What are the reasons for the low production efficiency of the vertical mill? 1. Material hardness The harder the material, the more difficult it is to process, and the more serious the wear on the equipment. When the hardness of the material is high, the grinding speed of the pulverizer is very slow, the grinding capacity is small, and the production efficiency is low.   2. Material humidity When the water content of the material is high, the material is easy to adhere in the mill, and it is easy to block during the feeding and conveying process, resulting in the reduction of the grinding capacity of the mill and the reduction of production efficiency.   3. Material composition When the material contains a lot of fine powder, it is easy to adhere to the equipment during the grinding process, affecting the conveying.   4. Finished particle size The finer the particle size of the finished product, the lower the powder yield. 2. How to improve the production efficiency of vertical mill? 1. Start at the source The material should not be too hard. If the moisture content of the material is too high, dry it first. In terms of processing fineness, the proportion of fine powder should not be too large.   2. Start with technology In addition to the material itself affecting the production efficiency of the mill, the operation of the equipment and the performance of the equipment during the production process are also key factors. So we can adjust from the following aspects: (1) Stable material bed A stable material bed is the key to the normal operation of the equipment. If the material layer is too thick, the grinding efficiency will be reduced. If the material layer is too thin, it will cause vibration. The thickness of the material layer can be adjusted by adjusting the height of the retaining ring. (2) Control the grinding pressure The vertical mill pulverizes the material by applying high pressure to the material bed. The pressure increases and the output increases, but it does not change after reaching a certain critical value. The increase in pressure is followed by an increase in power, resulting in an increase in unit energy consumption. Therefore, suitable rolling requires both output and energy consumption. (3) Ensure a certain grinding temperature Vertical mills generally have dual functions of grinding and drying. In order to ensure that the raw materials are well dried, the moisture content of the milled materials is less than 0.5%, and the outlet temperature of the mill is generally controlled at about 90 °C. If the temperature is too low, the moisture content of the finished product will be large, which will reduce the grinding efficiency and powder selection efficiency.

2022

08/03

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