Compound slagging agent of converter and preparation method and applications thereof

Abstract

The invention relates to a metallurgic refining flux and preparation method and applications thereof. A compound slagging agent of converter comprises the following components by weight percentage: 20to 50 percent of MnO, 3 to 6 percent of MgO, 5 to 8 percent of CaO, 10 to 15 percent of Fe, 7 to 10 percent of water and the balance of unavoidable impurities. The product has good smelting characteristic, so as to be capable of slagging ahead of time for 1 to 1.5 minutes, shortens the tap-to-tap cycle so as to improve the yield of steel, has good slagging effect in the whole process and almost does not cause splashing, re-drying or slag adhesion on oxygen lance so as to be capable of reducing ferrous charges consumption by 5 to 10 kilograms per ton, increases residual manganese of terminal molten steel by 0.04 to 0.08 percent by using 8 to 14 kilograms of compound slagging agent per ton so as to be capable of saving the alloy of Fe and Mn by 1 to 2 kilograms per ton, eliminates the pollution of fluorinion to environment and water resource, can directly lead to economic benefit in normal conditions according to the results of primary test, and has remarkable social benefit.

Description

technical field [0001] The invention relates to a metallurgical refining agent, a preparation method and an application method thereof. Background technique [0002] With the development of the domestic economy and society, my country has become the world's largest producer of steel, making the domestic steel industry have maintained sustained and rapid development in the past ten years, the scale of steel manufacturing enterprises has continued to expand, and a series of new metallurgical technologies and new processes have been obtained. Extensive promotion and application. But on the whole, compared with some steel powers in the world, my country's iron and steel industry is relatively backward in production technology, equipment and technical level, making domestic iron and steel products comparable to foreign advanced iron and steel manufacturing enterprises in terms of product structure, performance and variety. There is a certain gap. On the one hand, the production c...

AI Technical Summary

Problems solved by technology

However, considering the resources, price, slag melting speed and slag fluidity, etc., there are many defects and deficiencies in the application of the above-mentioned various fluoride-free slag agents.

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