Method for processing vanadium-containing waste refractory bricks

A technology of refractory bricks and refractory brick powder, which is applied in the field of processing waste refractory bricks containing vanadium, can solve the problems of vanadium resource loss, environmental pollution, etc., and achieve the effect of solving environmental protection problems and avoiding loss

Inactive Publication Date: 2020-06-19
承德钒钛新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment used in the vanadium pentoxide melting casting process is a melting furnace. The inside of the melting furnace is built with refractory bricks of different materials. However, after a long period of production loss, the refractory bricks of the melting furnace mus

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for processing waste refractory bricks containing vanadium, comprising the steps of:

[0033] S1: 500g of vanadium-containing waste refractory bricks (the mass content of vanadium is 3.0%) is crushed by a jaw crusher to a particle size of ≤25mm, and then ground by a ball mill until the particle size of the refractory brick powder after grinding is ≤125μm Accounting for the proportion of refractory brick powder total amount is 81.5%, then magnetic separation (magnetic separation magnetic field strength is 2.0T) obtains vanadium-containing refractory brick powder, and vanadium content is 3.68%;

[0034] S2: Mix the above vanadium-containing refractory brick powder with 7.5 g of sodium carbonate, grind to a particle size of ≤50 μm, and roast at 780° C. for 3 hours to obtain roasted clinker;

[0035] S3: adding the above-mentioned roasted clinker into 175g of water, leaching at 75°C for 2 hours to obtain a vanadium-containing slurry;

[0036] S4: Add 3.5g of alumi...

Embodiment 2

[0038] A method for processing waste refractory bricks containing vanadium, comprising the steps of:

[0039] S1: 800g of vanadium-containing waste refractory bricks (the mass content of vanadium is 7.2%) is crushed by a jaw crusher to a particle size of ≤25mm, and then ground by a ball mill until the particle size of the refractory brick powder after grinding is ≤125μm Accounting for the proportion of refractory brick powder total amount is 81.5%, then magnetic separation (magnetic separation field intensity is 2.3T) obtains vanadium-containing refractory brick powder, and vanadium content is 10.25%;

[0040] S2: Mix the above vanadium-containing refractory brick powder with 16g of sodium carbonate, grind to a particle size of ≤50 μm, and roast at 850°C for 3.5 hours to obtain roasted clinker;

[0041] S3: adding the above-mentioned roasted clinker into 400g of water, leaching at 90°C for 2.5h to obtain a vanadium-containing slurry;

[0042] S4: Add 10 g of aluminum sulfate ...

Embodiment 3

[0044] A method for processing waste refractory bricks containing vanadium, comprising the steps of:

[0045] S1: 500g of vanadium-containing waste refractory bricks (the mass content of vanadium is 20.0%) is crushed by a jaw crusher to a particle size of ≤25mm, and then ground by a ball mill until the particle size of the refractory brick powder after grinding is ≤125μm Accounting for the proportion of refractory brick powder total amount is 81.5%, then magnetic separation (magnetic separation magnetic field intensity is 2.5T) obtains vanadium-containing refractory brick powder, and vanadium content is 23.52%;

[0046] S2: Mix the above vanadium-containing refractory brick powder with 7.5g of sodium carbonate, grind to a particle size of ≤50 μm, and roast at 70°C for 4 hours to obtain roasted clinker;

[0047] S3: adding the above-mentioned roasted clinker to 200g of water, leaching at 60°C for 4 hours to obtain a vanadium-containing slurry;

[0048] S4: Add 4g of aluminum s...

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PUM

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Abstract

The invention relates to the technical field of solid waste treatment, and particularly discloses a method for processing vanadium-containing waste refractory bricks. The method comprises the following steps that the vanadium-containing waste refractory bricks are crushed and ground, and magnetic separation is carried out to obtain vanadium-containing refractory brick powder; the powder and sodiumcarbonate are ground, mixed and roasted to obtain roasted clinker; the roasted clinker is added into water for leaching, vanadium-containing slurry is obtained; and aluminum sulfate is added, separation is carried out to obtain a vanadium-containing solution. According to the method for processing the vanadium-containing waste refractory bricks, vanadium carried in the waste refractory bricks ofa tablet vanadium pentoxide melting furnace is effectively recycled, the vanadium recovery rate reaches 90%-95%, and the loss of the metal vanadium is avoided.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a method for treating waste refractory bricks containing vanadium. Background technique [0002] Vanadium pentoxide is widely used in metallurgy, chemical industry and other industries, mainly for smelting ferrovanadium and as an alloy additive. The appearance of vanadium pentoxide has two states of powder and tablet, among which, as the leading product of vanadium pentoxide, the consumption of vanadium pentoxide in the field of metallurgy accounts for 85%-90% of the total amount of vanadium pentoxide . [0003] Tablet vanadium pentoxide is prepared from ammonium polyvanadate slurry through high-temperature dehydration, deammonization oxidation, melting casting and other steps. The equipment used in the vanadium pentoxide melting casting process is a melting furnace. The interior of the melting furnace is built with refractory bricks of different materials. Howeve...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B1/02C22B3/04C22B34/22C22B3/24
CPCC22B1/02C22B3/04C22B3/24C22B7/006C22B34/22Y02P10/20
Inventor 李东明于继洋李兰杰卢明亮贾立根卢永杰
Owner 承德钒钛新材料有限公司
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