Dry magnetic separation method is helpful for processing of tungsten raw materials

       In the raw materials and products deep processing priority plan and "technology causes and natural raw material processing technology" child direction plan, supported by the east kazakhstan state technical university experts developed from the technical causes seam and loose deposits increase production of tungsten and bismuth in technology.

The main purpose of the project is to change the technology of tungsten enrichment and improve the technical and economic indexes of the processing process based on the magnetic separation method. In addition, the use of gravity and dry magnetic separation method for the investigation of tungsten materials is also one of the purposes. Because kazakhstan is rich in tungsten ore deposits (about 20 deposits), it is possible to process these minerals locally through research.

Through research, the expert based on gravity and dry magnetic concentration method is clear in the tungsten raw material in the process of quantitative laws of the distribution of tungsten and bismuth, and proves that the continuous application of centrifugal concentrator and magnetic separator in order to increase the effectiveness of coarse tungsten content of product quality. During the experiment, as the magnetic induction value increased from 0.2t to 1.4t, both tungsten and bismuth, which were absorbed into the paramagnetic part, increased, ranging from 56.08-67.37% (mass) and 55.71-80.34% (mass) respectively. In the non-magnetic part, the absorption was reversed, with a decline of 42.37-30.61% and 33.57-13.11%. Using dry magnetic separation method to grind the tungsten gravity concentrate on the concentrator, it can obtain the products containing about 48% tungsten and 13% bismuth.

Since there is no need to use various chemical reagents, it is environmentally friendly to use gravity and magnetic enrichment to process technical genetic mineral formations and loose tungsten deposits. In addition, by installing modular processing equipment, the cost of infrastructure construction can be greatly reduced. These modular devices can be assembled and dismantled in a short time and moved to a new site, which is of practical significance for the development of small mineral deposits.