Silicon metal powder
Silver Gray Si Metal Powder Silicon Powder
The role of silica powder: silica powder can fill the pores between cement particles, and hydration products at the same time to form colloids, and alkaline material magnesium oxide reaction to for...
DESCRIPTION
The role of silica powder: silica powder can fill the pores between cement particles, and hydration products at the same time to form colloids, and alkaline material magnesium oxide reaction to form colloids. Adding appropriate amount of silicon powder into cement-based concrete, mortar and refractory castable can play the following roles:
1, significantly improve the compressive, flexural, impermeable, anti-corrosion, impact resistance and wear resistance.
2, with water retention, prevent segregation, bleeding, greatly reduce concrete pumping resistance.
3. Significantly prolong the service life of concrete. Especially in the chlorine salt pollution erosion, sulfate erosion, high humidity and other harsh environment, the durability of concrete can be doubled or even several times.
4. Greatly reduce the ground ash of shotcrete and castable, and improve the thickness of single shotcrete layer.
5. It is a necessary component of high-strength concrete and has been used in engineering of C150 concrete.
6, has about 5 times the effect of cement, in the ordinary concrete and low cement castable application can reduce the cost. Improve durability.
7. Effectively prevent the reaction of concrete alkali aggregate.
8, improve the density of cast-type refractory. When coexisting with Al2O3, it is easier to generate mullite phase, which enhances its high temperature strength and thermal vibration resistance.
| Grade | Size | Chemical Comoositions(%) | ||||
| Si | Fe | Al | Ca | |||
| Mesh | Min | Max | ||||
| For chemical use | 3303 | 10-120 | 99.4 | 0.3 | 0.3 | 0.03 |
| 411 | 99.3 | 0.4 | 0.1 | 0.1 | ||
| 421 | 99.1 | 0.4 | 0.2 | 0.1 | ||
| 441 | 99.0 | 0.4 | 0.4 | 0.1 | ||
| 553 | 98.5 | 0.5 | 0.5 | 0.3 | ||
| For metallurgy use | 421 | 180-325 | 99.0 | 0.4 | 0.2 | 0.1 |
| 441 | 98.8 | 0.4 | 0.4 | 0.1 | ||
| 532 | 98.5 | 0.5 | 0.3 | 0.2 | ||
| 643 | 98.0 | 0.6 | 0.4 | 0.3 | ||
| 876 | 97.0 | 0.8 | 0.7 | 0.6 | ||
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