Refractories Condensed Silica Fume Used In Concrete 15m2/g
White Zirconia Microsilica Silicafume for Monolithic Refractories/Castable Materials
1. White Micro Silica Fume Introduction
White Microsilica OR White Silica Fume, produced from desilication in zircon sand melting, is widely used in monolithic refractories, Castable materials by adding silica powder can change the structure of monolithic refractories, improve its rheological property, enhance intensity, and increase its service life.
White silica fume improves the properties of both fresh and hardened concrete. it is added to portland cement concrete to improve compression strength, abrasion resistance, bond strength and durability. it also reduces chloride ion permeability and bleeding.
2. Specifications
| Analysis | Result | ||||
| SF85 | SF88 | SF90 | SF92 | SF94 | |
| SiO2(%) | 86.12 | 88.6 | 91.5 | 93.66 | 96.98 |
| Fe2O3(%) | 0.7 | 0.65 | 0.35 | 0.2 | 0.2 |
| Al2O3(%) | 0.38 | 0.26 | 0.22 | 0.2 | 0.2 |
| CaO+MgO(%) | 0.4 | 0.36 | 0.36 | 0.3 | 0.3 |
| K2O+Na2O(%) | 0.3 | 0.28 | 0.2 | 0.2 | 0.2 |
| Moisture(%) | 1.77 | 1.66 | 1.66 | 0.82 | 0.91 |
| Loss on lgnition(L.O.I)@975℃ (%) | 3.6 | 2.92 | 2.07 | 1.92 | 1.91 |
3. General advantages
a. Dense castables
b. Improved flow
c. Hot strength
d. Lower the ingress of movement of water or chemicals
4. Characteristics
1)Fine granularity.
2)Narrow particle distribution.
3)Large surface area.
4)Excellent suspension performance.
5)Reinforcement of good performance.
5. Package
Customerized.
6. Applications
Mainly used in unshaped refractory materials, construction, ceramics, pigments and chemical industrial, etc.
Used in the construction of cement concrete: which can reduce the dosage of cement concrete, eliminating material segregation and improve the concrete strength, enhance the wear resistance and durability, improve corrosion of steel, etc.
Used in monolithic refractories: which can effectively reduce the water addition, good thixotropy, and low temperature combination effect, is the ideal combination of agent, binder, additives and performance improvement of blending.
Used in the unsteady casting of ladle: which can be used for high temperature and steel water insulation.
Used in high alumina brick, magnesia brick, sliding water mouth brick, kiln and other high temperature equipment and other refractory materials: which can improve the products quality grade, acting as other ordinary refractory materials.
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