Silica fume is used in refractory.

Silica fume in refractory enhancing the fluid of pouring refractory, reducing the volume of used water, beeasy to shape, and raising the production efficiency. Because of its untramicrostructure for gap filling, the compact and intensity of refractory gain rising by a wade margin. Silica fume in refractory is a highly effective pozzolanic material, so it's easy to come into being Mullite Phase, under the premise that Al2O3 exists, enhance elevated temperature strength and thermal shock of refractory.

    We are often used together with silica fume and concrete. When it is in concrete, it acts as a cementing material and as a filler. Small silica fume particles fill spaces between cement particles and past a cement base and aggregation between the particles. The combination of silica fume also the formation of pozzolanic reaction, by increasing the calcium hydrate and calcium hydroxide. Both the intensive and more powerful the results of actions and less permeable material.

   Silica fume as a special kind of raw material, had been processed use to widely known. Silica fume is divided into many forms, the following brief silicon metal powder, generalized grinding:
Silicon metal powder grinding new equipment - general grinding
First, the application of silicon

1. All kinds of machinery, electrical equipment (heavy equipment, high-precision grinding machines) non-plate installation requirements.
2. Steel installation.
3. Column base, pile, rock foundation grouting fixed.
4. Anchor frame connector access.

 Silica fume, such as the performance of concrete strength increases. The use of silica fume, are normally used for naphthalene superplasticizer, such as building 1, H1, DH3, FDN, NF, N-B and so on. There melamine resin-based water-reducing agent, widely used in Western Europe (that Melment). Effect of melamine resin and water is better, generally 25 percent water reduction. However, domestic use is still low, mainly because of high costs. At present

   Microsilica, also known as microsilica, it is a very fine pozzolanic material, composed of amorphous silica produced byelectric arc furnaces as a byproduct of the production of elemental silicon or ferro silicon alloys.Silicafume can be used in a variety of cementitious products such as concrete, grouts, and mortars as well as elastomer, polymer, refractory, ceramic and rubber applications.

   Silica fume content in concrete too little, not to improve the performance of concrete, but the content too much, then the concrete is too sticky and difficult to work, and shrinkage deformation, and antifreeze poor, therefore, doped silica, we should find the optimal content to get the best results. Under normal circumstances

  Within the mixed method - instead of using silica fume cement, was divided into equal parts to replace and replace the two, instead of for the equivalent amount in lieu of an equal amount of silica fume cement, and some for 1kg instead of 1 ~ 3kg instead of silica fume cement, as a research the general content of 5 ~ 30% of the general water-cement ratio remains unchanged.

  erosion resistance have a very demanding requirements of micro-silica fume incorporation TOPKEN become necessary;

  Manufacture of high-permeability (≥ P30), the structure of self-waterproof concrete, for the subway, tunnels, high-rise building basement……

   Micro-silica<silica fume> concrete compacting vibration requirements shall not leak vibration, less vibration, no vibration too. General vibration time 10 ~ 30s;