Controlling the running state of vertical roller mill is also an important measure to deal with liner wear. When the vertical roller mill is running under low load, it is necessary to adjust the feed quantity of vertical roller mill in time so as to improve the grindability coefficient of the ore.

During the installation of the lining plate, it is necessary to excavate and repair the non-conforming parts so that the lining plate can be fully integrated into the working system of the vertical roller mill. After the installation of the lining plate, the relevant staff should carry out repeated debugging and make detailed records to ensure that the fixing bolts in the vertical roller mill have a certain pre-tension force so as to prevent the bolts from loosening during the operation of the vertical roller mill.

In addition, the liners need to be replaced in a timely manner.Generally speaking, as long as the operation is correct, it is necessary to replace the liner once every 12 months, do a good job of checking, and actively adjust the position of the liner according to the actual situation, which can reduce the loss of the liner to a certain extent.

Tagi: vertical mill 

The vertical roller mill is an indispensable equipment in the concentrator, and it is also a very critical equipment in the construction of the entire concentrator. Therefore, it is very important to ensure the stable operation of the vertical roller mill.

However, before it is officially put into operation, the debugging of the vertical roller mill is a very important step, and there can be no deviation at any point, otherwise the particle size of the vertical roller mill product will not meet the requirements, and even the metal recovery rate will be reduced. So how to debug the vertical roller mill? Let's see how vertical roller mill does in the debugging process.

The debugging of the vertical roller mill should confirm whether the debugging conditions are met, run empty and under load, and check the status of all aspects of the equipment.

Check whether the vertical roller mill meets the following debugging conditions. Whether the vertical roller mill equipment is fully installed according to the drawings, and ensure that all parts of the equipment are in the correct position.

It is required to have a record of the complete installation process and to pass the acceptance inspection;
The strength of the basic concrete of the equipment and the strength of the secondary grouting concrete must reach the strength level required by the design;
The PLC control system, thermometer and pressure gauge of the vertical roller mill can be reliably put into operation;

Tagi: vertical 

Ways and methods of gypsum recycling are: the produce of construction gypsum powder, gypsum board and gypsum block; as cement retarder, production of cement and sulfuric acid and ammonium sulfate; can be made into paper filler; can be used as soil conditioner in agriculture field. Recently, an innovative of new technology is to extract rare earth elements from gypsum.

Poland had reported this technology as early as in the 1990s about extracting rare earths from apatite; and our country carried out a experimental study of launched comprehensive utilization of gypsum and extraction of rare earths, it is learned that this innovative technology can solve three problems once: extracting important rare earth metals from industrial waste, gypsum building materials, and waste recycling.

In phosphoric acid production process, part of the phosphate rock is not decomposed, gypsum washing the filtration process is not completely and the addition of additive are all reasons of gypsum containing phosphorus, fluorine and other impurities. gypsum can be used in pharmacy industry.

Tagi: vertical roller mill