Method for adding reducing agent for promoting carbonization smelting of molten titanium-containing slag

Abstract

The invention discloses a method for adding a reducing agent for promoting carbonization smelting of molten titanium-containing slag, and belongs to the technical field of metallurgy. The method for adding the reducing agent for promoting carbonization smelting of the molten titanium-containing slag comprises the following steps: 1, after discharging of a previous furnace and before charging of the furnace, adding a reducing agent accounting for 10%-40% of the total reducing agent adding amount required by the furnace into the reaction furnace in advance through a furnace top feeding system; and 2, putting molten titanium-containing slag with the initial temperature larger than or equal to 1280 DEG C into the reaction furnace, then electrifying the reaction furnace to be heated to the smelting temperature, and then supplementing and adding the residual reducing agent needed by the furnace. According to the method, a conductive medium-C can be provided for a molten pool in an early reaction furnace by pre-adding part of the reducing agent so that the condition of poor conductivity of the titanium-containing slag can be remarkably improved, the temperature rise speed of the molten pool can be increased in the early smelting stage, the original defect of slow temperature rise is overcome, the smelting time is shortened, the energy consumption is reduced, and unexpected technical effects are further brought.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for adding a reducing agent for promoting the carbonization and smelting of molten titanium-containing slag. Background technique [0002] Pre-prepared reducing agent technology is mostly used in the field of mixing reducing agent and solid minerals to make pre-reduced pellets and lump ore and then entering the smelting furnace for deep smelting, but this technology is rarely reported in the process of reducing molten materials. Existing reports only illustrate it by technological means, and there are no related reports on the way of adding reducing agent in pre-mixed molten materials. [0003] Secondly, in the carbonization smelting process of molten titanium-containing slag, the conductivity of the titanium-containing slag itself is poor, so there is a problem of slow heating rate of the early molten pool, which leads to long heating time and high cost. Contents o...

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Problems solved by technology

Existing reports are only explained by technological means, and there are no related reports on the way of adding reducing agent to pre-mixed molten materials

[0003] Secondly, in the carbonization smelting process of molten titanium-containing slag, the electrical conductivity of the titanium-containing slag itself is poor, so there is a problem of slow heating rate of the early molten pool, which leads to long heating time and high cost.

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