85% دخان السيليكا المكثف

85% Densified Silica Fume is a micro-silica fume with 85% محتوى SiO2, and the Bulk density is 550-700kg/m³.

غبار السيليكا, also known as silica powder or Micro silica, is a kind of micro powder product which is recovered by dust collector after a large amount of smoke and dust produced by ore heating furnace in the production of ferro silicon or silicon metal. Its characteristics are: extremely fine particles, large specific surface area and good activity.

المكون الرئيسي لدخان السيليكا هو SiO2, with a small amount of impurities such as C, Fe2O3, K2O, CaO, Na2O, إلخ. Due to its inherent characteristics, متوسط ​​حجم الجسيمات 0.23 واحد, the specific surface area is 20 م 2 / ز, and the sieve residue of 45 um is less than 3%. By adding silica fume into concrete, the compacting, الكتامة, المقاومة للتآكل, frost resistance and other properties of concrete can be greatly improved. في الخرسانة, the amount added is 5-10% of the cement content.