Treatment method for water containing vanadium, chromium and iron and smelting process for high chromium vanadium titanium magnetite concentrate

Abstract

The invention provides a treatment method for water containing vanadium, chromium and iron and a smelting process for high chromium vanadium titanium magnetite concentrate. The treatment method for the water containing vanadium, chromium and iron comprises the following steps: filling the water containing vanadium, chromium and iron; controlling temperature of the water containing vanadium, chromium and iron to be higher than a theoretical liquidus temperature of 65-120 DEG C, carrying out bottom blowing, and adding a desilicification agent into a steel ladle in batches; removing slag in the steel ladle or dumping and discharging the slag; blowing oxygen into the water containing vanadium, chromium and iron under the condition that gas is introduced into the steel ladle in a bottom blowing way, wherein oxygen blowing amount is controlled to be 23-32Nm<3> per ton iron, and controlling temperature of the water containing vanadium, chromium and iron in an oxygen blowing process to be higher than the theoretical liquidus temperature of 25-80 DEG C by adding a cooling agent into the vanadium, chromium and iron-containing water; removing slag or replacing the steel ladle, so that vanadium chromium slag and molten iron are obtained. The treatment method for the water containing vanadium, chromium and ironhas the advantages that the requirement that a technology for comprehensively utilizing a high chromium vanadium titanium magnetite concentrate resource by a non blast furnace process is smoothly carried out can be met, a vanadium chromium resource is effectively recycled, and the molten iron with the carbon content according to the follow-up electric furnace steel making requirement can be obtained.

Description

technical field [0001] The invention relates to the technical field of smelting high-chromium vanadium-titanium magnetite concentrate, in particular to a method for treating vanadium-chromium-containing molten iron produced by a non-blast furnace ironmaking process of high-chromium-type vanadium-titanium magnetite concentrate, and a method A method for smelting high-chromium vanadium-titanium magnetite concentrate. Background technique [0002] At present, for Panxi high-chromium vanadium-titanium magnetite concentrate, if the blast furnace process is used to produce vanadium-chromium-containing hot metal, usually [C]≥3.8% and [Si]≤0.2% in vanadium-chromium-containing hot metal, the traditional The converter vanadium extraction process for extracting vanadium-chromium slag has no technical obstacles, and the quality of the produced vanadium-chromium slag is excellent. However, due to the slag adjustment operation must be carried out in the previous process of sintering and ...

AI Technical Summary

Problems solved by technology

However, no matter which non-blast furnace ironmaking process is used to process vanadium-titanium magnetite, there is a problem of controlling the degree of reduction during the smelting process to avoid over-reduction of subsequent titanium-containing slag, which eventually leads to low carbon content [C] in vanadium-containing molten iron In the case of high silicon content [Si]