Microsilica (Silica Fume)

ACC® Microsilica

Microsilica is a high-SiO2-content by-product of the production of elemental silicon or alloys. It is used as a property-enhancing material in many areas.

ACC has been manufacturing and supplying microsilica since 2005. We provide densified (compacted), semi-densified, and undensified micro silica fume products with minimum SiO2 contents ranging from 85% to 97% (higher contents upon request). Our products have been used in many famous construction projects in the world, and also in refractory, chemical fertilizer and other fields.

ACC microsilica complies with ASTM C 1240 and EN13263:2005 standards and has been recognized by SGS, Exova, and other famous test authorities and ENR enterprises.

DSF Series
Densified Silica Fume (Microsilica)

Densified Microsilica (Gray)

SiO2 Content: min. 85% – min. 97%

Bulk Density: 500 – 700 kg/m3

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USF Series
Undensified Silica Fume (Microsilica)

Undensified Microsilica (Gray)

SiO2 Content: min. 85% – min. 96%

Bulk Density: 180 – 450 kg/m3

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ZSF Series
White Silica Fume (Microsilica)

White Microsilica

SiO2+ZrO2: min. 92% – min. 97%

High purity and fluidity.

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Silica Fume for Construction
For Construction

With high pozzolanic activity index, high comprehensive strength and low LOI, ACC microsilica can be well-performed in construction application, which can improve the bond strength and abrasion resistance, reduce permeability, and protect reinforcing steel from corrosion.

Silica Fume for Refractory
For Refractory

ACC undensified microsilica can be well used in the refractory application. It can improve the fluidity of refractory casting materials, reduce water consumption, improve the compactness, temperature strength and thermal shock resistance.

Learn more about the effect of microsilica on refractory castables.

Silica Fume for Fertilizer
For Fertilizer

ACC microsilica can also be well-performed in fertilizer, it can be used as moisture absorption, anti-caking agent, and pellet binding agent.etc.

Brochure & Datasheets

ACC Microsilica Brochure
Densified Microsilica (from light to dark gray)
Undensified Microsilica (from light to dark gray)
White Microsilica
ACC microsilica is supplied in a range of packagings:
  • Jumbo bag with PE liner which conforms to GB/T10454 and EN ISO 21898 with uv-proof function and anti-aging character;
  • 20kg/25kg plastic woven bag with PE liner;
  • 10kg/12kg water-soluble paper bag;
  • Special packaging can be supplied on request.

ACC sets up thousands of square meters of warehouses in main ports of China and provides integral solutions of transportation for customers:

  • Containerized shipment
  • Break-bulk shipment

Note: There are break bulk vessels to main ports of the Middle East (say Jebel Ali, Hamad, Kuwait, etc.) every month.

ACC Microsilica (Silica Fume) Storage and Transportation


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