Calcium Silicate Refining Slag and Metal Erosion High-Density Insulating Casting Material

Calcium Silicate Refining Slag and Metal Erosion High-Density Insulating Casting Material

Refining slag is a kind of technology which is used after the raw materials are mixed according to certain proportion and granularity, and heated below the melting point of the raw materials, and then the raw materials are sintered together and broken into particle size.

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Refining slag is a kind of technology which is used after the raw materials are mixed according to certain proportion and granularity, and heated below the melting point of the raw materials, and then the raw materials are sintered together and broken into particle size. The main components are Cao-caf2, CaO-Al2O3 and CAO-AL2O3-SIO2. The shapes of refining slag are sintering, premelting and mixing.

The composition of sinter-type refining slag is more uniform, stable, melting speed is faster, but the cost is relatively increased.

Pre-melting refining slag is a kind of refining slag which is mixed in a certain proportion and melted into liquid state at high temperature above the melting point of slag system in special equipment. The pre-melting refining slag has the advantages of high purity, uniform chemical composition, stable phase, low melting point and high slag forming speed, which can greatly shorten refining time and can be directly used for slag washing in the tapping process of converter ladle to improve the cleanliness of molten steel. And does not contain fluoride or a small amount of fluoride, reduce lining erosion, effectively reducing the pollution of fluoride to the environment. Because of its compact structure, non-absorbent, convenient storage and transportation, non-pulverization and non-volatilization, premelting refining slag can reduce dust pollution of iron and steel works significantly, but its production cost is high.


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