Silica fume, also called as micro silica, silica dust, which is a by-product of producing silicon metal or ferrosilicon alloys. Silica fume consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2). Because of its fine particles, large surface area, and the high SiO2 content, silica fume is a very reactive pozzolan when used in concrete. The quality of silica fume is specified by ASTM C 1240 and AASHTO M 307.
Silica fume is widely used in concrete field: High-performance project, such as bridge, airport, hydropowder station, seawall, railway projects.
1)Enhance the mechanical properties of concrete.
High strength and early strength has been used in substructures of high-performance concrete.
2)Improve the durability of concrete:
Significant improvements can be seen in the permeability resistance, abrasion resistance, anti-corrosion against chlorideion and anti-freezing of concrete.
Improve shotconrete, increase easly strength, control temperature contractors can take advantage of the properties of silica fume concrete to expedite projects or to achieve properties that migh otherwise be impossible to achieve.
1) High early strength.
2) Greater impermeability.
3) High ultimate compressive strengths.
4) Substantially greater resistance to corrosion.
Tenigeer (Dalian) International Trading Co., Ltd. lies in Dalian. Our company is engaged in importing and exporting the ferroalloy products. We have factory of our own to produce silicon metal and silica fume.
Our plant which has a long history in producing silicon metal and researching of new product, is located by the bank of HeilongJiang River at Heihe city. Now the company has developed to be a enterprise with 28,000 tons of silicon metal annual producing capacity. The annual output of silica fume is up to 10000mt. We execute strictly management in quality. Accordingly, our product's quality is guaranteed and we are awarded as A class of exporting credit enterprise by state in 2004.
Our lab is equipped with the most advanced instruments, like ultra-low pollution sampling machine, ICP spectrometer and carbon & sulfur analyzer. Our factory was awarded as the second class of exporting enterprise by Heilongjiang province Entry and Exit Inspection and Quarantine Bureau. 70% of our products are exempted from exporting inspection.
We pay more attention to developing the silicon series products. We will produce much more quantity and better qualify products for the customers of all over the world.