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A method for calcification and roasting of vanadium-phosphorus-containing materials

A calcification roasting and material technology, which is applied in the field of calcification roasting, can solve the problems of complex process, difficult sintering, and easy sintering of materials.

Active Publication Date: 2016-04-06
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a material that is not easy to sinter and has a low vanadium content in the vanadium-containing leaching solution due to the complex procedures of the existing method for removing silicon and phosphorus in the vanadium extraction process and the easy sintering of the material during the roasting process. Method for calcification and roasting of vanadium-phosphorus-containing materials that can directly obtain vanadium-containing leaching solution with low phosphorus, low silicon and high vanadium content in the subsequent leaching process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example is used to illustrate the roasting method of the vanadium-phosphorus-containing material of the present invention.

[0033] In the mixed material of 100g vanadium slag (the content of vanadium is 5% by weight, the content of silicon is 21.01% by weight, and the content of phosphorus is 0.26% by weight) and 4g limestone (the content of calcium element in terms of calcium oxide is 70% by weight) Add 0.05g of glucose and 1mL of water, stir and mix, then add 1.057g of magnesium carbonate and 0.02g of aluminum sulfate, stir and mix, heat up to 450°C at 12°C / min at 60°C, and then roast at 860°C for 150min, the obtained clinker is loose and porous, Adopt 250mL of 4% by weight sulfuric acid aqueous solution to leach for 40min at room temperature, filter, and the obtained filtrate is 224ml of vanadium-containing leach solution, the concentration of vanadium in this vanadium-containing leach solution is 21.16g / L, the concentration of silicon is 0.015g / L, phosphorus T...

Embodiment 2

[0035] This example is used to illustrate the roasting method of the vanadium-phosphorus-containing material of the present invention.

[0036] In the mixed material of 200g vanadium slag (the content of vanadium is 12% by weight, the content of silicon is 18% by weight, and the content of phosphorus is 1.1% by weight) and 26g limestone (the content of calcium element in terms of calcium oxide is 53% by weight) Add 0.04g sucrose and 1.2mL deionized water and stir and mix, then add 5.10g magnesium oxide and 0.05g aluminum hydroxide and stir and mix, heat up to 600°C at 10°C / min at 40°C, and then roast at 880°C for 120min, the obtained cooked The material is loose and porous. At room temperature, 450 mL of 10% by weight ammonium carbonate aqueous solution is used for leaching for 30 minutes and filtered. The obtained filtrate is 400 mL of vanadium-containing leaching solution. The concentration of vanadium in the vanadium-containing leaching solution is 56.76 g / L, and the concent...

Embodiment 3

[0038] This example is used to illustrate the roasting method of the vanadium-phosphorus-containing material of the present invention.

[0039] 200g vanadium slag (the content of vanadium is 10.2% by weight, the content of silicon is 13% by weight, and the content of phosphorus is 1.4% by weight) and 15g calcium oxide are added in the mixed material of 0.08g glucose and 2mL deionized water and stirred and mixed, then Add 5.4g of magnesium oxide and 0.07g of potassium metaaluminate, stir and mix, heat up at 100°C at 15°C / min to 600°C, and then bake at 820°C for 150min. The obtained clinker is loose and porous. , The obtained filtrate is 397mL of vanadium-containing leach solution, the concentration of vanadium in the vanadium-containing leach solution is 48.05g / L, the concentration of silicon is 0.007g / L, and the concentration of phosphorus is 0.014g / L.

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PUM

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Abstract

The invention discloses a calcification roasting method of a vanadium / phosphorus-containing material. The method is implemented by carrying out calcification roasting on a roasting material, wherein the roasting material comprises a vanadium / phosphorus-containing material, a calcium-containing material, a saccharide compound, a magnesium-containing compound and an aluminum-containing compound; the calcification roasting comprises first roasting and second roasting; in the first roasting process, the temperature is increased from 15-100 DEG C to 300-600 DEG C at the speed of 8-15 DEG C / minute; and in the second roasting process, the temperature is 820-900 DEG C, and the time is 80-180 minutes. Under the synergetic effects of the saccharide compound, magnesium-containing compound and aluminum-containing compound under roasting conditions, the materials can not be easily sintered; and the roasted materials can be leached to directly obtain the low-phosphorus low-silicon high-vanadium-content vanadium-containing leach solution.

Description

technical field [0001] The invention relates to a method for calcifying and roasting materials containing vanadium and phosphorus. Background technique [0002] V 2 o 5 The roasting process and leaching process in the technological process are the most important vanadium extraction processes. Among them, the roasting process is generally sodium roasting, calcification roasting or empty roasting to obtain clinker, and the leaching process generally adopts acid leaching, alkali leaching or water leaching. The way to leaching clinker to obtain vanadium-containing leachate. However, due to the high content of silicon and phosphorus in vanadium-phosphorous materials such as vanadium slag, the material is easy to sinter during the roasting process, and at the same time, the content of silicon and phosphorus in the vanadium-containing leaching solution is high. Especially for the production of high-silicon and high-phosphorus vanadium slag V 2 o 5 For example, not only is the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02C22B34/22
Inventor 伍珍秀高官金蒋霖肖亮万龙飞
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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