The Study of Reacting Conditions for Precipitated Silica;

To summarize the state and new developments of superior fine and improving surface group processing about silica in recent years,and to present the new thinking about the superior quality processing of silica.

The silica is produced by using the lower modulus silicate sodium and changing the relevant operation parameters.

Fly ash was used to prepare poly aluminum ferric chloride and white carbon black.

It is manufactured a follow sealant to neuter pen with synthetic oil and white carbon black,this sealant possesses good follow performance,and can satisfy the sealing requirement of neuter pen.

The white carbon black, by-product in the preparation of ammonium fluoride solution from phosphate fertilizer production waste fluorosilicic acid, was used as raw material, and bauxite was used as aluminum source, to prepare crystallization director and then to prepare 4A molecular sieve by hydrothermal synthetic method.

According to the physics and chemical property on the (?) rubber, pearlite powders are grinded to rnicron-nanometer with the planet type ball mill, the powders are processed by GHJ-10 kneading Machine to get active treatment, an equiralent substitute for silica white managed to solve traditional rubber packing problem of color dark and density high.

Effect of silicon dioxide and alumina filler with different contents on the wear-resistance properties of polyurethane elastomer was studied.

Polyurethane composites contained different content of alumina and silicon dioxide.

Measuring the specific surface area of Silicon Dioxide powder by the ST - 03 type of apparatus is systemized by this article.