Qingzhou Zhongyuan Chemical Industry Co., Ltd.  

Product Name: Microsilica Fume for Concrete, Construction, Grey Densified and Undensified Micro Silica Model NO.: 85%~96% CAS No.: 69012-64-2 Appearance: Grey or White Powder Trademark: LY Transport Package: Plastic Bag N. W. 25/50/1000kg Specification: SGS ISO Origin: Shandong HS Code: 3804 Product Description Our advantage: 1. Factory price, 2. Good Quality, 3. Free sample, 4. ISO Cerficate, 5. A long stable supplier, 6. Good support to you````````````````````````````````````````````````````````````````````````````````SpecificationsMicrosilica1. Silica fume 85%-98%2. High electrical resistivity3. Low permeability3. Superior resistance to chemical attackMicrosilica1. InstructionMicrosilica, also called silica fume or micro silica, is a byproduct of producing silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced in electric furnaces. The raw materials are quartz, coal, and woodchips. The smoke that results from furnace operation is collected and sold as silica fume, rather than being land filled. Silica fume consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2), its average granule diameter is 0.15~0.20 µ M, specific surface area is 15000~20000 m2/kg, and it has extremely strong surface active. 2. Main functionVery low permeability to chloride and water intrusion. Extremely high electrical resistivity (20 to 100 times greater than ordinary concrete). Increased abrasion resistance on decks, floors, highways and marine structures. Superior resistance to chemical attack from chlorides, acids, nitrates and sulfates. 3. SpecificationGrey Densified and undensified Micro SilicaSpecification: Analysis ResultAnalysisResultSF85SF88SF90SF92SF94SF96SF97SF98SiO2(%)(min.)85.0588.0599.0592.0594.0596.0597.598.5Fe2O3(%)0.780.440.210.250.200.200.100.20Al2O3(%)0.290.200.210.250.200.200.200.20CaO(%)0.390.300.360.300.300.300.300.30K2O+Na2O(%)0.290.240.220.200.200.200.200.20Moisture(%)3.052.552.052.051.851.251.001.00LossonIgnition(L.O.I)@975OC(%)4.383.382.382.382.281.881.551.50