Raw material supply: at present, the main raw material of fused quartz is local pickling quartz sand. Due to environmental protection and other restrictions　

　

　

The melting temperature of fused quartz is 1713 ℃, the coefficient of thermal conductivity is low, and the coefficient of thermal expansion is smaller than that of almost all refractories, and it has very high thermal shock stability.　

The use of fused silica in investment casting shell is increasing year by year, just like that in foreign developed countries.　

There are many factors that affect column quality. Silica gel made of fused quartz is considered to be the purest form of glass, which contains very few metal oxide (Lewis acid site) and hydrogen bond (surface silane alcohol type) groups.　

As an important industrial mineral raw material, fused silica raw material is widely used not only in traditional industrial fields (such as glass, ceramics and refractories), but also in high-tech industries (such as military, electronics and communications). 　

The fused quartz for precision casting uses natural high-purity SiO2 as raw material. 　

In October, the price of fused quartz in Jiangsu was mixed. At present, the prices of fused quartz at all levels are as follows: the mainstream price of primary block is 2700-2800 yuan / ton　

First of all, we all know that fused quartz sand is a kind of filling material. It is oxidized by capacitance method, processed and screened by mechanical equipment, and finally becomes fused quartz sand.　

Spherical fused silica powder, also known as spherical silica powder, refers to amorphous quartz powder material with spherical particles and mainly composed of silica.　

For the modern industry, fused quartz has also slowly moved onto the process of industrial development. For the modern industrial chain, the quartz process has been quite mature. 　

As a derivative of quartz, fused quartz powder has high industrial value and can be used in many industries.