Adhesion treatment process of semisteel molten iron tank in converter smelting

Abstract

The invention belongs to the technical field of steel production, and particularly relates to an adhesion treatment process of a semisteel molten iron tank in converter smelting. According to the process, molten iron is loaded into the converter according to the residual tank capacity of the molten iron tank, blowing is carried out for 3-5 minutes, and magnesium balls and lime are added during blowing. The addition amount of the magnesium balls is 8 kg for each ton of iron, and the adding amount of the lime is 30 kg per ton of iron. The tapping temperature is controlled to be 1550-1600 DEG C;the semisteel is discharged into the molten iron tank, and after the semisteel is stopped in the molten iron tank for 0.5-1 hour, iron is added into the converter; and semisteel can be rinsed by about10 tons of molten iron each time. When the tank volume of the molten iron ladle is not good, semisteel smelting is adopted through the converter; and the molten iron adhesive to the tank is washed away through utilizing high temperature of the semisteel, so that the turnover problem of the molten iron tank is solved, the service life of the molten iron tank is prolonged, the production efficiencyis improved, the production cost is reduced, the scrap quantity of the molten iron tank is reduced, and the on-line turnover rate of the molten iron tank is improved.

Description

Technical field: [0001] The invention belongs to the technical field of iron and steel production, and in particular relates to a tank sticking treatment process for semi-steel ladles for converter smelting. Background technique: [0002] The converter adopts a one-pot-bottom molten iron process. When the blast furnace condition is not smooth, the iron temperature is low and the silicon content of the molten iron is high, and the molten iron is easy to stick to the tank. The life-span of the molten iron tank is reduced, which affects the turnover of molten iron, thereby reducing production efficiency and increasing production costs. Therefore, it is very necessary to design a sticking treatment process for semi-steel ladles in converter smelting that can improve the service life and production efficiency of ladles. Invention content: [0003] The object of the present invention is to provide a sticking treatment process for semi-steel ladles in converter smelting that can...

AI Technical Summary

Problems solved by technology

[0002] The converter adopts a one-pot-bottom molten iron process. When the blast furnace condition is not smooth, the iron temperature is low and the silicon content of the molten iron is high, and the molten iron is easy to stick to the tank. The life of the molten iron tank is reduced, which affects the turnover of molten iron, thereby reducing production efficiency and increasing production costs.

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