HSA Silica Fume

Silica Fume for Sale

Silica fume, also known as microsilica, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product during silicon and ferrosilicon alloy production.

With the implementation of tougher environmental laws during the mid-1970s, silicon smelters began to collect the silica fume and search for its applications. The early work done in Norway received most of the attention, since it had shown that Portland cement-based-concretes containing silica fumes had very high strengths and low porosities. Since then the research and development of silica fume made it one of the world’s most valuable and versatile admixtures for concrete and cementitious products.

Silica fume powder is black or gray in color, and is available in several product forms and packaging options. Our products include:

  • Undensified Silica Fume ( 300~380kg/m³)
  • Densified Silica Fume ( 600~680 kg/m³)

Undensified Silica Fume

Undensified Silica Fume, which is made from a large amount of highly volatile silicon monoxide gas produced during the smelting process, is rapidly oxidized with air and condensed into silica dust.

Densified Silica Fume

Densified Silica Fume, is a further processing of the original micro-silica fume to obtain a denser encrypted micro-silica fume.



  • Water conservancy and hydropower engineering: in the anti-seepage and anti-abrasion parts, after mixing with micro-silica powder, it can greatly improve the anti-seepage, anti-cracking, anti-abrasion and anti-cavitation performance.
  • The production of high-strength concrete: silica powder as admixture to make high-strength concrete, the actual application of its strength level can be achieved 100Mpa.
  • Seaport engineering: concrete mixed with silica powder can improve the concrete’s anti-abrasion performance, anti-seepage performance, to prevent electrochemical corrosion of reinforcing steel.
  • Traffic engineering: silica powder concrete used in highway pavement and aircraft runway, can greatly improve the early strength and wear resistance of concrete, in the maintenance and repair of highway pavement, you can advance the opening time and increase the economic benefits.
  • Shotcrete: significantly improve the adhesion performance and cohesion of plastic concrete, significantly reduce the amount of rebound, increase the thickness of shotcrete once formed, shorten the construction period and save the cost of the project.


We can also produce according to your requirement.

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