company name: gansu lixinyuan microsilica co. ltd
contact person: manager sun
telephone: 0931-8516622
phone: 18919161001
email address: microsilica@gslxy.cn
fax: 0931-8507755
website: www.gslxy.cn
address: no. 2599, yanbei road, chengguan district, lanzhou city, gansu province
we all know that microsilica, that is, silica fume, is a by-product of smelting metal silicon and ferrosilicon, also known as active silica micropowder. microsilica is collected by environmental protection equipment. its initial density is only 150-200 kg/m3, which costs a lot of transportation costs. for example, un-encrypted micro-silica powder can only hold 18 tons of a 60-ton train skin. left and right, the cost of transportation per ton of microsilica is sometimes as high as 50%, so the encrypted micro-silica is the best way to reduce costs.
in order to reduce the transportation cost of micro silicon powder, many micro silicon powder manufacturers now use encryption technology. for example, manufacturers in canada, sweden, the united states, norway and other countries supply encrypted microsilica powder to commercial concrete companies or concrete microsilica mixing plants. in this way, the transportation cost is low, the loading and unloading is neither gray and convenient, the working environment is good, and the pumping and mechanization are easy.
after the microsilica is encrypted, it is convenient for the concrete to stir without affecting the fluidity of the microsilica . in the concrete production process, the researchers found that the use of the encrypted microsilica is more conducive to uniform mixing and improve the overall performance of the concrete, thus being encrypted. microsilica is used more and more widely in building materials such as concrete.
unencrypted microsilica is mainly used in fields such as refractories or coatings. micro-silica powder encryption technology was originally mastered by only a few developed countries, such as the norwegian company. their equipment is sold to china and the price is extremely high. at present, our technicians have produced the same effect equipment through scientific and technological research and experiments, and the actual operation effect is good.
due to the localization achieved, the cost has dropped significantly, making the technology widely used. the encrypted micro-silica powder is spherical, and the bulk density is increased from about 0.2 t/m3 of the original raw ash to 0.3-0.6 t/m3. this can reduce packaging transportation costs by about 30~60%. the efficiency of loading and unloading micro-silica powder is greatly improved, storage space and land occupation are reduced, and it is suitable for automated production. on-site feeding no longer causes fly ash, thereby improving the working conditions and environment of concrete.
the semi-encrypted microsilica is mainly composed of glassy sio2. the particles are characterized by ultrafine powder. the particle size is mostly less than 1 um, the average particle size is 0.1 um, and it has a high specific surface area (300-400 m2/kg). and volcanic ash activity.