China Factory Supply Bset Quality Silica Fume Powder Price Concrete Microsilica 85D

• Customization: Available
• Cement: Silica Fume
• Silica Fume: Microsilica
• Model NO.: Microsilica
• Sio2: 92
• Density: 660kg/M3
• Material: Sio2
• Structure Feature: Powder
• Usage: Cement Mixed
• Effect: Cement Mixed
• Source: Ferro Silicon
• Transport Package: Jumbo Bag
• Specification: sio2 96%
• Trademark: MRG
• Origin: China
• HS Code: 26219000
• Production Capacity: 10000mts/Months

Product Description

Grey Densified and undensified Micro Silica

Product 

 Densified Microsilica (scientific name "silica fume," Micro-silica or Silica Fume), in the smelting of ferrosilicon and industrial silicon, silicon through the flue gas emitted by steam oxidation, the specially designed filter collected the amorphous powder like silica (SiO 2).Microsilica fume average 0.1-0.15 μ m in diameter, the size of several cement average 1.0%. Surface area for the 15-27 m 2 / g, with strong surface activity.

Specification:
Analysis Result

Analysis	Result
	SF85	SF88	SF90	SF92	SF94	SF96	SF97	SF98
SiO2(%)(min.)	85.05	88.05	99.05	92.05	94.05	96.05	97.5	98.5
Fe2O3 (%)	0.78	0.44	0.21	0.25	0.20	0.20	0.10	0.20
Al2O3 (%)	0.29	0.20	0.21	0.25	0.20	0.20	0.20	0.20
CaO (%)	0.39	0.30	0.36	0.30	0.30	0.30	0.30	0.30
K2O+ Na2O (%)	0.29	0.24	0.22	0.20	0.20	0.20	0.20	0.20
Moisture (%)	3.05	2.55	2.05	2.05	1.85	1.25	1.00	1.00
Loss on Ignition (L.O.I) @975OC (%)	4.38	3.38	2.38	2.38	2.28	1.88	1.55	1.50

Function

Dense castables

Improved flow

Hot strength

Strength during heat-up