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Product introduction of Calcium aluminate refining slag
Calcium aluminate pre-melting refining slag and composite refining synthetic slag.
The main components of calcium aluminate refining slag are 3CaO-Al₂O₃, Al2O3, SiO2, CaFe2, MgO, etc. These metal ions are combined into CaO-CaF2, CaO-Al2O3, CaO-Al2O3-SiO2, and then form a composite material, i.e. refining slag. Refining slag is a necessary additive for deoxidation and desulphurisation in the refining process of steel enterprises.
Featrues of Calcium aluminate refining slag
There are three kinds of calcium aluminate refining slag produced by Kerui, namely, premelted calcium aluminate refining slag, sintered calcium aluminate refining slag and composite calcium aluminate refining slag. They have the functions of rapid slagging, arc dipping, slagging, absorption of molten steel inclusion compound and desulfurization. They have strong deoxidization and desulfurization effects, and can reduce the gas and impurities in steel.
These products are selected from various raw materials, and the minerals mainly composed of 12CaO-7Al2O3 are produced through sintering or melting, with the content of more than 85%. A large number of calcified components can react with oxygen and sulfur in molten steel to produce products with low melting point and easy to float, so as to achieve the purpose of purifying molten steel. In ladle refining, it can effectively shorten the steelmaking time, has strong adsorption capacity for non-metallic inclusions in steel, and plays an important role in purifying molten steel.
Advantages of Refining Slag
- Reasonable chemical composition is beneficial to slag formation and smelting time.
- The power consumption of refining time can be reduced due to the rapid formation of slag.
- Reduce the consumption of ladle refractory and increase the ladle life.
- It has good desulfurization and deoxidation effects.
- Due to its low melting point, it has a good adsorption effect on impurities during argon blowing in ladle and tapping in electric furnace.
- The ingredients are stable and uniform, and can be produced and packaged according to the technical data required by users.
Parameters of Refining Slag
| Type | SiO2 (%) | Al2O3 (%) | CaO (%) | MgO (%) | CaF2 (%) | Grain Size (mm) | Water Content (%) |
| KRL-1 | <4 | 38-45 | 45-50 | 2-4 | 4-6 | 1-30 | <0.5 |
| KRL-2 | <6 | 30-38 | 46-54 | 4-10 | – | 1-30 | <0.5 |