Method for sintering by utilizing iron mud generated in smelting steel

Abstract

The invention discloses a method for sintering by utilizing iron mud generated in smelting steel. By using the method, labor power and material resources are saved and cost is effectively reduced. In the method for sintering with the iron mud generated in smelting steel, iron mud slurry deposited in a steel-making sloping panel settlement tank is carried to a sintered iron mud pool by a tanker; and the iron mud slurry is infiltrated to a mixing process for sintering through a slag slurry pump, and the sintering is finished by utilizing the existing sintering technology. By using the method, an iron mud pressing and filtering process is reduced, thereby saving manpower, reducing secondary hauling and lowering iron mud utilizing cost.

Description

technical field [0001] The invention relates to the field of steelmaking production, and more particularly, to a method for sintering by using steelmaking mud. Background technique [0002] The amount of dry iron sludge produced by the steelmaking plant is about 100 tons per day, and the annual output of iron and steel sludge is about tens of thousands of tons. Steelmaking slime contains 50% iron, about 12% CaO, about 4% MgO and other available elements. In the past, the iron and steel sludge was deposited in the inclined plate settling tank and then filtered by the filter press, then transferred to the sintered iron sludge tank for dilution with water, and then sprayed into the sintering-mixing process with a slurry pump. When the slurry is used, the slurry pump is blocked, and it is stopped for a time. Instead, it is directly used as a sintering raw material after drying in the stockyard and mixed in a certain proportion for sintering. The above methods of use: first, t...

AI Technical Summary

Problems solved by technology

The above methods of use: First, the iron mud needs to be used after pressure filtration, which increases the cost of pressure filtration; second, it needs to be transported to the material yard to dry and then transported to sintering. Since the drying time is greatly affected by the weather, the iron mud Effective recycling cannot be realized, occupying the already tense space, and increasing the shipping fee; third, open-air stacking pollutes the environment