What is the application of Raymond Mill in an artificial sand production line?

Artificial sand production is the most technical and difficult part in the production of sand aggregate, which is particularly important for RCC. At present, the commonly used sand making process equipment mainly has two kinds of rod mill and crusher. Because the sand produced by vertical shaft crusher is too coarse, the content of stone powder in the sand and stone system can not meet the requirement of stone powder content in the sand of RCC. Adding Raymond grinding production line in the sand and stone system, this process has a certain effect on the addition and fineness adjustment of stone powder, and is a way to solve the problem of corresponding stone powder content. As a Raymond mill manufacturer, Guikuang Machinery will introduces the application of Raymond mill in artificial sand production line.

Dry and wet screening method is used in the design of artificial sand production line, that is, wet screening for one screening, wet screening for two screening, and dry screening for three screening. The stone powder content of the sand produced by secondary screening of the system cannot meet the design requirements, and the stone powder content of the fine sand and stone powder recovered by the stone powder recovery device of the secondary screening washing water can not meet the requirements after mixing with the finished sand. In order to ensure the stone powder content and stability of the finished sand, the Ramon grinding powder production line is introduced after analysis and comparison. After adding stone powder to the Ramon grinding production line, the content of stone powder in the sand can meet the design requirements. Raymond mill is mainly composed of main machine, analyzer, fan, finished cyclone separator, micro powder cyclone separator and air pipe. Among them, the main machine is composed of a plum frame, air inlet volute, shovel knife, grinding roller, grinding ring and cover shell.

When the main machine is working, the material to be crushed is added to the main machine from the feed hopper on the side of the cover shell, relying on the grinding roller device suspended on the main machine’s plum frame (rotating around the vertical axis). At the same time, due to friction and rotation, the role of centrifugal force when the roller rotates, the roller swings outward and presses tightly on the grinding ring, so that the shovel picks up the material and sends it to the grinding roller and the grinding ring) rolling and crushing the material. After the material is ground, the fan blows the wind into the main casing to blow the powder. After sorting through the analyzer placed above the grinding chamber, the fine and coarse material is dropped into the grinding chamber for re-grinding. The fineness of the material meets the specifications with the air flow into the cyclone collector, collected by the cyclone collector and then discharged through the powder outlet, that is, the finished product.

Raymond mill in artificial sand production line application characteristics: (1) Raymond mill is three-dimensional structure, covers an area of small, complete sets of strong, from the block to the finished stone powder independent into a production system. (2) The fineness of the finished powder grinded by Raymond mill is uniform, and the sifting rate reaches 9%, which is difficult to have other grinding equipment. (3) The transmission device of Raymond mill main engine adopts closed gear box and belt wheel, stable transmission, reliable operation, no oil leakage and oil leakage phenomenon. (4) The important parts of Raymond mill are made of high-quality steel, wear-resistant parts are made of high-performance wear-resistant materials, and the whole machine has high wear-resistant performance. (5) The electrical system adopts centralized control, the grinding workshop can basically achieve unmanned operation, and the maintenance is simple. (6) Due to the use of electromagnetic vibration feeder, easy to adjust, uniform feeding, small size, light weight, energy saving, easy to use and maintain. (7) The blade of Raymond grinding machine is easy to replace after wear, the blade holder is composed of two parts, and the lower part can be replaced after wear by removing the connecting bolt.

The application of Raymond mill in the artificial sand production line makes the average content of stone powder about 80% and the fineness modulus about 0.25, which can meet the normal construction of RCC dam.