The preparation of high-purity silicon powder generally includes chemical synthesis and natural mineral purification. However, through long-term research, it has been found that chemical synthesis has high cost and low yield, which cannot meet the demand. Using natural quartz minerals as raw materials to prepare ultrafine powders can not only meet market demand, but also better reduce the content of harmful impurities in the powder.

The raw materials for the production of high-purity silicon powder include veined quartz, quartzite, fused quartz and composite raw materials. The choice of raw materials is very important, because the quality of raw materials used in production will directly affect the length of the production process, the level of production costs, and the quality of the final product.

Example: When producing crystalline silicon powder, vein quartz with relatively pure texture (SiO2 content is generally ≥99.9%) is generally selected, while some surface pollution, quartzite and quartz conglomerate, which are easy to remove by ordinary chemical methods, are ignored. Of minerals. Quartzite and quartz conglomerate in some areas of our country are also very pure in texture. They are good raw materials for processing and producing high-purity silica powder, and their hardness is slightly softer than vein quartz, and it is easy to process.

The production process of silica powder is generally the same according to the nature of the original ore and the characteristics of the mineralogy of the ore process and the user's requirements for product quality. The production of high-purity silicon powder is obtained by further ultrafine pulverization or grinding and classification based on the preparation of high-purity sand.

The above is a brief description of the main raw material selection of high-purity silica powder. The simple description hopes to help you understand, and you can simply understand it. The content is for your reference only, if you want to know more inquiries, you can always follow our website updates!