Residual iron discharging method for vanadium-titanium ore smelting furnace

Abstract

The invention relates to the technical field of vanadium-titanium ore metallurgy and discloses a residual iron discharging method for a vanadium-titanium ore smelting furnace. According to the erosion particularities of the bottom and a hearth of a titanium slag blast furnace used for vanadium-titanium magnetic iron ore smelting, it is found that the bottom and the hearth of the titanium slag blast furnace used for vanadium-titanium ore smelting are eroded in a 'circular truncated cone plus pan bottom' shape; and through organization of previous furnace clearing materials and data statistics, by means of a comparative analysis method, the position of a residual iron opening of the blast furnace is marked, the erosion conditions of the bottom and the hearth of the furnace are determined, and the amount of residual iron is calculated. It is proved through practice that by means of the residual iron discharging scheme, the maintenance time limit can be remarkably shortened; labor intensity of furnacemen is remarkably lowered; furthermore, furnace clearing cost is lowered; and the residual iron discharging method is more precise, more efficient, more scientific and more reasonable.

Description

technical field [0001] The invention relates to the technical field of vanadium-titanium ore metallurgy, in particular to a method for discharging residual iron in a blast furnace for smelting vanadium-titanium ore. Background technique [0002] Residual iron discharge of blast furnace is to clean up the residual iron accumulated below the center line of the tap hole after the furnace is shut down. First, the erosion depth of the bottom of the furnace should be roughly judged, and the depth value should be used to determine a convenient tapping position from the center line of the tap hole downwards. Drill holes and put iron. Its purpose is to reduce the workload of removing residual slag and iron in the furnace for inspection and maintenance, shorten the maintenance period, and reduce the labor intensity of the front workers. The erosion of the furnace bottom and hearth of ordinary ore smelting is "garlic" or "elephant foot". According to the "Lam thermal formula" and othe...

AI Technical Summary

Problems solved by technology

Griddles are expensive, time-consuming, labor-intensive, and dangerous

[0006] To sum up, in view of the particularity of vanadium-titanium ore, it is impossible to use the experience of ordinary mines to discharge residual iron in the vanadium-titanium ore smelting blast furnace; not discharging residual iron will lead to high cost of the griddle, long time consumption, high labor intensity, and dangerous sexuality issues

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