Microsilica

Microsilica

Microsilica: A Versatile Additive with Diverse Applications

Microsilica, also known as silica fume, is a highly reactive pozzolanic material that finds applications in various industries, including construction, cement, and refractory materials. It is a byproduct of the production of silicon metal and ferrosilicon alloys.

Khorshid Alyazh: A Leading Producer of Microsilica

Among the prominent producers of μ-SiO2 is Khorshid Alyazh, a Qazvin-based company in Iran. With state-of-the-art facilities and a dedicated team of experts, Khorshid Alyazh has established itself as a reliable supplier of high-quality μ-SiO2 globally.

Production Process

Microsilica is produced as a byproduct of the electric arc furnace process used in the production of silicon metal and ferrosilicon alloys. The process can be summarized as follows:

  • Raw Materials: Khorshid Alyazh sources high-grade quartz and coal to produce silicon metal and ferrosilicon alloys.
  • Electric Arc Furnace: The raw materials are charged into an electric arc furnace, where an electric arc creates intense heat.
  • Reduction: The intense heat causes the quartz to reduce and combine with the carbon from the coal to form silicon metal or ferrosilicon alloys.
  • μ-SiO2 Formation: During the reduction process, a significant amount of silicon monoxide (SiO) gas is produced. This gas is oxidized to form μ-SiO2 particles, which are collected using baghouses or cyclones.
  • Collection and Packaging: The collected μ-SiO2 particles are packaged in bulk bags or other suitable containers for distribution.
Microsilica

Product Specifications

Khorshid Alyazh produces microsilica in accordance with international standards, including ASTM C1240 and EN 13263-1. The typical specifications of its products include:

  • SiO2 Content: >90%
  • Specific Surface Area: >20 m2/g
  • Bulk Density: 250-350 kg/m3
  • Loss on Ignition: <5%
  • Moisture Content: <1%

Applications

Microsilica is primarily used as an additive in the following applications:

  • Concrete: Microsilica enhances the strength, durability, and abrasion resistance of concrete. It is used in high-performance concrete, self-compacting concrete, and other specialized concrete applications.
  • Cement: Microsilica is added to cement to improve its strength and reduce its permeability. It is used in the production of blended cements and high-performance cements.
  • Refractory Materials: Microsilica is used in the production of refractory bricks and mortars, which are used in high-temperature applications, such as furnaces and kilns.
  • Other Applications: Microsilica also finds applications in the production of ceramics, paints, and coatings.

Competitive Advantages

Khorshid Alyazh has established a competitive edge in the microsilica market through:

  • High Quality Standards: Stringent quality control measures ensure the consistency and reliability of its products.
  • Technical Expertise: The company’s team of experienced engineers and metallurgists provides technical support and customized solutions to its customers.
  • Global Reach: Khorshid Alyazh exports its products to over 20 countries worldwide, including the US, Europe, and Asia.
  • Customer Focus: The company prioritizes customer satisfaction and strives to meet their specific requirements through tailored solutions.

In conclusion, microsilica is a versatile additive with diverse applications in various industries. Khorshid Alyazh plays a significant role in meeting the global demand for this material through its commitment to quality, technical expertise, and customer focus. The company has earned a reputation as a reliable and innovative supplier in the microsilica industry.

Producer:

Khorshid Alyazh

Specification

Sio2 Min.85%
Fe2O3 Max 2%
CaO Max 1.5%
Al2O3 Max 1%
MgO Max 1/5%
C Max 3%
L.O.I Max 3/55%
Humidity Max 1%