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Limestone powder grinding machine - Raymond mill

Time:2018-03-21 14:05:57

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Application of limestone

According to its own characteristics, the ore mined in the mine can be used in a variety of industries, among which limestone is more widely used and widely used. Limestone is a sedimentary rock mainly composed of calcite. It is distributed all over the world, with good texture and mostly exposed on the surface, easy to mine and low development cost, and easy to process and comprehensively use. After being repeatedly crushed and processed by a crusher, limestone can be used in many fields after being processed by a Raymond Roller Mill. Limestone fine powder is the upstream and original material for most industrial manufacturing, covering almost all the production and manufacturing departments of light and heavy industries. As the limestone powder processing industry has gradually become hot in recent years, a large number of mills have emerged. Production enterprises have achieved considerable economic benefits due to the good benefits of the ore milling industry.
The chemical industry utilizes the chemical processing of limestone to produce important calcium salts such as calcium chloride, calcium nitrate, and calcium sulfite. Xinjiang, China, has abundant limestone reserves. In view of the huge economic value of limestone mining, the limestone milling and processing industry has been vigorously developed in recent years , And achieved good economic benefits. A very large application area for limestone is the cement manufacturing industry. Cement manufacturing has considerable industry momentum. Since the invention of cement, cement products have become the main building materials for 180 years. Even today, when science and technology are very advanced, there is no material that can replace limestone for the cement industry. Therefore, investing in a mill production line for processing limestone for cement manufacturing is a good way to obtain economic benefits.


To process limestone, it is necessary to choose an excellent mill. With the continuous rise of China's mill industry in recent years, it has also driven the continuous advancement of mill technology. In the limestone processing technology, selecting stone mills with different discharge finenesses can produce fine limestone powder suitable for purposes, which greatly meets the processing requirements of various industries.


Limestone Grinding Technology of Raymond Mill

1. Feeding system:
The limestone in the receiving hopper enters the bucket elevator through a belt conveyor (plus iron remover), the elevator sends the material to the raw material warehouse for grinding, and the belt feeder is installed under the raw material warehouse to evenly send the material to the mill for grinding.
2. Grinding system:
The material is sent to the Raymond mill for grinding, and the ground product passes through the powder separator, enters the cyclone powder collector and the pulse dust collector, and is sent to the screw conveyor from the lower discharge port.
3. Finished product conveying system:
The discharge port of the screw conveyor is equipped with a pneumatic conveying system to transport the finished product to the finished product warehouse, and the excess gas is filtered by the dust collector on the top of the warehouse.
4. Dust removal system:
The entire system is equipped with pulse dust collectors, and air exhausts are installed at all dust-raising points to ensure that the entire system is free from dust leakage and achieve dust-free operations on site.
5. Control system:
The system is equipped with an intelligent PLC control cabinet and upper computer to realize the start-stop, monitoring, and interlocking linkage functions of all the equipment of the whole system, and reserves the DNS interface, which can realize remote control.



Reasons for the coarser grain size of Raymond mill

In the current milling equipment, Raymond mill is suitable for the preparation of ore powder and coal powder, such as the fine powder processing of raw material ore, gypsum ore, coal and other materials. The working principle of the Raymond mill is that the grinding roller is tightly rolled on the grinding ring under the action of centrifugal force, and the material is scooped up by the spatula and sent to the center of the grinding roller and the grinding ring. The material is crushed into powder under the action of the grinding pressure, and then Under the action of the fan, the powdered materials are blown up and passed through the analyzer. The materials that meet the requirements of fineness pass through the analyzer, and the materials that do not meet the requirements return to the grinding chamber to continue grinding, and the materials through the analyzer are separated and collected by the cyclone separator. 
The three-dimensional structure of the Raymond mill has a small footprint and is strong in complete sets. From the block material to the finished powder, it forms an independent production system. The fineness of the finished powder is uniform, and the sieving rate is 99%, which is difficult for other milling equipment to have. The transmission device of the main machine of the pulverizer adopts a closed gear box and a belt wheel, which has stable transmission and reliable operation. The important parts of the Raymond Mill are made of high-quality steel, and the wear parts are made of high-performance wear-resistant materials. The whole machine has high wear resistance and safe and reliable operation. The centralized control electrical system can basically realize unmanned operation in the grinding workshop, and the maintenance is simple and convenient.
Raymond pulverizer is a vertical structure with a relatively small area and strong system. It can form an independent production system from the rough processing of raw materials to the conveying to the powdering and final packaging. Compared with other grinding equipment, Raymond mill has a high pass-through rate, and the pass-through rate is as high as 99%, which is generally not achieved by other grinding equipment.
The demand for Raymond mill equipment is large, but in the production of Raymond mill, some problems sometimes occur, such as the coarser grain size of the discharged material. What is the reason for this situation? In response to this problem, our staff have discovered many reasons that lead to the coarsening of the grain size of the Raymond Mill, such as the design and installation of the production line are not reasonable enough, or the maintenance is not in place. Therefore, during the design work of the Raymond Mill production line, measures should be taken according to local conditions, and the specific conditions should be analyzed in detail to ensure that the equipment can operate normally.
There is also the problem of the speed of the main engine speed, the abrasion of the ring grinding roller of the Raymond mill, and the abrasion of the analyzer blades, etc., which will also cause the output particle size to be too coarse, so pay attention to these problems in production. And solve it in time to ensure that the equipment can be in normal operation at all times.


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