Silica powder is made of natural quartz (SiO2) or fused quartz (amorphous SiO2 after natural quartz is melted and cooled at high temperature) through crushing, grinding, flotation, acid washing purification, high-purity water treatment and other processes. So what is the performance and production process of silicon powder? The following describes the performance of silicon powder and the production process of silicon powder grinding mill.

In addition to low thermal expansion coefficient, excellent dielectric property, high thermal conductivity, good suspension performance and other excellent properties, the properties of silica powder also include the following:

(1) Good insulation: due to the high purity of silicon powder, low impurity content, stable performance and excellent electrical insulation, the cured product has good insulation and arc resistance.

(2) It can reduce the exothermic peak temperature of the epoxy resin curing reaction, reduce the linear expansion coefficient and shrinkage rate of the cured product, thus eliminating the internal stress of the cured product and preventing cracking.

(3) Corrosion resistance: silica powder is not easy to react with other substances, and has no chemical reaction with most acids and alkalis. Its particles are evenly covered on the surface of the object, with strong corrosion resistance.

(4) The particle grading is reasonable, which can reduce and eliminate sedimentation and layering when used; It can enhance the tensile and compressive strength of the cured product, improve the wear resistance, increase the thermal conductivity of the cured product, and increase the flame retardancy.

(5) The silica powder treated by silane coupling agent has good wettability to various resins, good adsorption performance, easy mixing and no agglomeration.

(6) The addition of silica powder as filler into organic resin not only improves the properties of the cured product, but also reduces the product cost.

The production process of silica powder includes dry grinding and wet grinding.

Dry grinding silicon powder production process: put the silicon powder raw material into the silicon ore grinding mill machine for grinding. The grinding process can continuously feed and discharge, or input several weight raw materials at one time, and then discharge after continuous grinding for several times; When discharging, the particle size shall be controlled by the fine powder classifier. The coarse products shall be returned to the mill for regrinding or as products, and the fine products shall be products. For dry grinding, strictly control the moisture content of the grinding material, and the product will not be dry.

Wet grinding silica powder production process: put a number of weight silica powder raw materials into the ball mill at one time, add an appropriate amount of water, and the operating concentration is 65%~80%; After continuous grinding for more than ten hours, pour out the slurry, use the pressure filtration method or put it in the material barrel to naturally precipitate and dehydrate, and obtain the water-bearing material cake; After being broken and dispersed by a crusher, it is evenly and continuously put into a hollow shaft stirring dryer, and the product is obtained after drying.

In the production process of dry grinding silicon powder, professional silicon powder grinder can be selected. HLMX silicon powder ultra-fine vertical grinding mill produced by HCMilling(Guilin Hongcheng) can play a great role in the production process of dry grinding silicon powder. Because of its high production efficiency, high classification accuracy and high quality of grinding products, it has won the praise of customers, and is very suitable as a silicon powder production line equipment.

As an experienced manufacturer of mining machinery and equipment, HCMilling(Guilin Hongcheng) specializes in producing various kinds of silicon powder grinding mill equipment. If you want to know more about the silicon powder production process, please consult HCM for more information.