Method for recycling vanadium in waste containing vanadium

A recovery method and waste technology, applied in the field of vanadium chemical industry, can solve the problems of groundwater pollution, unreasonable storage, waste of vanadium resources, etc., to achieve the effect of eliminating pollution, solving storage problems, and improving recovery rate

Inactive Publication Date: 2016-02-17
HEBEI IRON AND STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These vanadium-containing wastes not only cause a waste of vanadium resources, but als

Method used

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  • Method for recycling vanadium in waste containing vanadium

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Effect test

Embodiment 1

[0021] The vanadium-containing waste contains 5.24% total vanadium, and the vanadium-containing waste is mixed into the primary vanadium slag at a weight ratio of 2.0% to obtain a premixed material. The premixed material contains 6.44% total vanadium. The proportion of -100 mesh is 60%, the additive is sodium bisulfate, the added amount is 15.20% of the mass of the mixed material, the humidifying agent is industrial new water, and the added amount is 10.05% of the mass of the mixed material. The mixed materials are put into the kiln for roasting. During the roasting process, the clinker rolls naturally, the environment in the kiln is thorough, and the partitions are obvious. There is no agglomeration or ring formation, and the conversion rate is 91.23%. After the clinker leaves the kiln, it is treated with leaching agent wastewater, and then condensed water is leached to obtain a vanadium-containing solution. The vanadium yield of the vanadium-containing waste is 90.25%.

[00...

Embodiment 2

[0024] The vanadium-containing waste contains 11.45% of total vanadium, and the vanadium-containing waste is mixed into the secondary vanadium slag at a weight ratio of 10.0% to obtain a premix. The premix contains 5.67% of total vanadium. The proportion of passing -100 mesh is 78%, the additive is sodium bicarbonate, and the addition amount is 3% of the mass of the mixed material, and the humidifying agent is industrial fresh water, and the added amount is 12.04% of the mass of the mixed material. The mixed materials are put into the kiln for roasting. During the roasting process, the clinker rolls naturally, the environment in the kiln is thorough, and the partitions are obvious. There is no agglomeration or ring formation, and the conversion rate is 90.15%. After the clinker leaves the kiln, the vanadium-containing solution is obtained by leaching with leaching agent production water, and the vanadium yield of the vanadium-containing waste is 89.24%.

[0025] Precipitate va...

Embodiment 3

[0027] The vanadium-containing waste contains 15.58% total vanadium, and the vanadium-containing waste is blended into the primary vanadium slag at a weight ratio of 15.0% to obtain a premix. The premix contains 6.24% total vanadium. The proportion of -100 mesh is 86%, the additive is a mass mixture of sodium chloride and sodium bisulfate, and the amount added is 20% of the mass of the mixed material. The humidifying agent is treated vanadium industrial wastewater, and the added amount is 8% of the mass of the mixed material. %. The mixed material is put into the kiln for roasting. During the roasting process, the clinker rolls naturally, the environment in the kiln is thorough, the division is obvious, there is no agglomeration or ring formation, and the conversion rate is 88.75%. After the clinker leaves the kiln, it is leached with a low-concentration vanadium solution to obtain a vanadium-containing solution, and the vanadium-containing waste yield is 87.44%.

[0028] Pre...

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Abstract

The invention provides a method for recycling vanadium in waste containing vanadium. The method comprises the steps that the waste containing the vanadium and materials containing vanadium are mixed to obtain premixed materials; after the premixed materials are crushed, a mixed material is obtained; an additive and a humidification agent of a certain proportion are added into the mixed material, and the mixed material is put into a rotary kiln to be roasted to obtain a roasted clinker; and after the roasted clinker is taken out of the kiln, leaching liquid is added into the roasted clinker to obtain a solution containing the vanadium, and the obtained solution containing the vanadium can be refined to be various vanadium products as needed. By means of the method, not only is the recovery rate of metal vanadium in a vanadium production system improved and the storage of the waste containing the vanadium achieved, but also the novel treatment method is provided for solid hazardous waste containing vanadium on the premise of not additionally arranging novel equipment.

Description

technical field [0001] The invention relates to the field of vanadium chemical industry, in particular to a method for recovering vanadium in solid waste of vanadium chemical industry. Background technique [0002] At present, domestic and foreign vanadium products are mostly produced by roasting and leaching vanadium-containing slag to obtain a vanadium-containing solution, and then precipitate vanadate from the vanadium solution by hydrolysis precipitation or ammonium salt precipitation, and then further process it into various vanadium products. During this process, metal vanadium loss goes to three parts, one part of which enters the waste slag, and this part is returned to the steelmaking system for consumption, the second part of metal vanadium loss is separated to form solid waste after settling in the vanadium liquid purification process, and the third part As the vanadium precipitation wastewater enters the wastewater treatment system, solid waste containing vanadiu...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B34/22
CPCY02P10/20
Inventor 张国杰豆长宏卢明亮徐雪峰刘彦校刘晶
Owner HEBEI IRON AND STEEL
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