Method of controlling overflow substance in reduction process of vanadium ferrotitanium fine powder

Abstract

The invention relates to a method of controlling an overflow substance in a reduction process of vanadium ferrotitanium fine powder. The method comprises the steps of seating a fireproof tank on a tank support, filling the fireproof tank with a layer of 100mm thick reducer A, putting a bucket-shaped mold in the fireproof tank, filling the mold with the vanadium ferrotitanium fine powder, filling areducer B between the mold and a tank body of the fireproof tank to form a 20mm thick annular reducer layer, drawing out the mold, covering the surface of the vanadium ferrotitanium fine powder withthe 20mm thick reducer A, and putting the tank support and the fireproof tank in a tunnel kiln for reduction, wherein the tank support is provided with a tank support body; a square support groove isformed in the top surface of the tank support body; the reducer A is a mixture of metallurgical coke, semi-coke and dolomite; and the reducer B is semi-coke. The method has the advantages that overflow of low melting point minerals, magnesium, aluminum and calcium, in the vanadium ferrotitanium fine powder from the fireproof tank after softening to pollute the tank body and the tunnel kiln can beavoided, and a reduction effect can be ensured when the ferrotitanium fine powder is reduced in the tunnel kiln.

Description

technical field [0001] The invention relates to a method for controlling overflow in the reduction process of vanadium-titanium iron fine powder. Background technique [0002] When vanadium-titanium-iron fine powder is reduced by the tunnel kiln method, since the ore powder contains magnesium, aluminum, calcium and other low melting point minerals, at 700 ° C, it will soften and overflow from the reaction vessel, and after overflow, it will solidify in the cooling zone. It sticks to the tank body and tunnel kiln, and sometimes sticks to the curved sealing brick of the tunnel kiln, which cannot guarantee the completion of the reduction process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for controlling the overflow during the reduction process of vanadium-titanium iron concentrate. When the vanadium-titanium iron concentrate is reduced in a tunnel kiln, the low melting point minerals in the vanadium-...

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Problems solved by technology

[0002] When vanadium-titanium-iron fine powder is reduced by the tunnel kiln method, since the ore powder contains magnesium, aluminum, calcium and other low-melting minerals, at 700°C, it will soften and overflow from the reaction vessel, and after the overflow, it will solidify in the cooling zone. Sticking to the tank body and tunnel kiln, sometimes sticking to the curved sealing brick of the tunnel kiln, it cannot guarantee the completion of the reduction process

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