Pre-melted refining slag

The production process of pre-melted refined slag: That is, limestone (including CaO), magnesite (including MgO), dolomite (including CaO·MgO), toxic heavy stone (including BaO) and fluorite (including CaF2) are sintered and melted in the cupola.The melting point of this slag is very low, and it can melt at the fastest speed, which shortens the residence time of molten steel in the refining package and strengthens the smelting process.At the same time, the fluidity of this refining agent is very good, the kinetic conditions of the desulfurization reaction are optimized, and deep desulfurization can be achieved.

The main characteristics of the production process of pre-melted refining slag：

1. The purity of the slag is high, the chemical composition is uniform, the physical phase is stable, the melting point is low, and the slag forming speed is fast. It can greatly shorten the refining time and can be directly used for slag washing in the process of steel production from the ladle of the converter to improve the cleanliness of the molten steel；

2. It does not contain fluorine or a small amount of fluorine to reduce the erosion of the lining and effectively prevent the pollution of fluorine to the environment；

3. The structure is dense, non-absorbent, easy to store, transport and store, non-pulverized, non-volatile, and can significantly reduce dust pollution to steel plants；

4. The production cost is higher.