Processing method for sodium treatment vanadium and chromium extracting residues and method for extracting vanadium and chromium through sodium salt roasting of vanadium and chromium residues

A technology for extracting vanadium by sodium and its treatment method, which is applied to the treatment of residues of vanadium and chromium by sodium conversion and the field of vanadium and chromium extraction by sodium conversion and roasting of vanadium and chromium residues. Potential effects of pollution and waste of resources

Inactive Publication Date: 2015-11-11
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

[0003] The purpose of the present invention is to overcome the defects of polluting the environment and waste of resources due to the difficulty in recycling alkali metal elements in the residues of vanadium and chromium extraction by sodium conversion, and provide a method that can better recycle and utilize the alkali metal elements in the residues of vanadium and chromium extraction by sodium conversion. The method provides a method for treating residues of vanadium-chromium extraction by sodiumization and a method for extracting vanadium and chromium by sodiumization and roasting of vanadium-chromium residues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment is used to illustrate the treatment method of the sodium vanadium chromium extraction residue of the present invention.

[0031] Get 50g sodium to extract vanadium chromium residue (with Na 2 The content of the sodium element of O meter is 14% by weight, the V element content is 0.5% by weight, and the Cr element content is 0.8% by weight), 12.6gCaO (AR) and 250ml tap water join in the reaction vessel, and under magnetic stirring (rotating speed 500r / min), the temperature is 160 ℃ under contact reaction 100min, after the reaction is completed, filter with Buchner funnel to obtain 200ml filtrate A1 (in the form of Na 2 The concentration of the sodium element of O meter is 31.7g / L, and the concentration of V element is 0.024g / L, and the concentration of Cr element is 0.09g / L) and 59g filter residue (as Na 2 The content of sodium element in terms of O is 1.18% by weight, the content of V element is 0.086% by weight, the content of Cr element is 0.092% by w...

Embodiment 2

[0033] This embodiment is used to illustrate the treatment method of the sodium vanadium chromium extraction residue of the present invention.

[0034] Get 40g sodium to extract vanadium chromium residue (with Na 2 The content of the sodium element of O meter is 20% by weight, the V element content is 0.4% by weight, and the Cr element content is 0.7% by weight), 21.6gCaO (AR) and 300ml tap water join in the reaction vessel, and under magnetic stirring (rotating speed 500r / min), the temperature is 180min of contact reaction at 200°C, and after the reaction is completed, filter with a Buchner funnel to obtain 244ml of filtrate A2 (in the form of Na 2 The concentration of the sodium element of O meter is 30.5g / L, and the concentration of V element is 0.028g / L, and the concentration of Cr element is 0.1g / L) and 58.5g filter residue (as Na 2 The content of sodium element in terms of O is 1.18% by weight, the content of V element is 0.086% by weight, the content of Cr element is 0...

Embodiment 3

[0036] This embodiment is used to illustrate the treatment method of the sodium vanadium chromium extraction residue of the present invention.

[0037] Get 40g sodium to extract vanadium chromium residue (with Na 2 The content of the sodium element of O meter is 10% by weight, the V element content is 0.6% by weight, and the Cr element content is 0.9% by weight), 15gCaO (AR) and 250ml tap water join in the reaction vessel, and under magnetic stirring (rotating speed is 500r / min), the temperature is 240 ℃ of contact reaction 240min, after the reaction is completed, filter with Buchner funnel to obtain 100ml filtrate A3 (with Na 2 The concentration of the sodium element of O meter is 37.5g / L, and the concentration of V element is 0.04g / L, and the concentration of Cr element is 0.18g / L) and 50.9g filter residue (as Na 2 The content of sodium element in terms of O is 0.48% by weight, the content of V element is 0.1% by weight, the content of Cr element is 0.1% by weight, the cont...

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Abstract

The invention relates to a processing method for sodium treatment vanadium and chromium extracting residues. The method comprises the steps that the sodium treatment vanadium and chromium extracting residues, a calcium compound and water are mixed, the hydrothermal reaction is carried out, solid-liquid separation is carried out on the mixture obtained after the hydrothermal reaction, and a liquid phase and a solid phase are obtained, wherein the sodium treatment vanadium and chromium extracting residues are residues obtained after vanadium and chromium are extracted through the sodium salt roasting of vanadium and chromium residues. The invention further provides a method for extracting vanadium and chromium through sodium salt roasting of the vanadium and chromium residues with the liquid phase as an alkaline reagent to replace part of a sodium compound. By means of the processing method for the sodium treatment vanadium and chromium extracting residues, the liquid phase containing the enriched sodium element can be well separated out. According to the method for extracting vanadium and chromium through sodium salt roasting of the vanadium and chromium residues with the liquid phase as the alkaline reagent, the cost for extracting vanadium and chromium through sodium salt roasting of the vanadium and chromium residues is reduced.

Description

technical field [0001] The invention relates to a method for treating residues of vanadium and chromium extraction by sodium treatment and a method for extracting vanadium and chromium by sodium treatment and roasting of vanadium and chromium residues. Background technique [0002] In the process of comprehensive utilization of high-chromium vanadium-titanium magnetite, the recovery and utilization of vanadium and chromium is mainly manifested as the separation and extraction of vanadium and chromium slag. Among them, the extraction of vanadium and chromium from sodium-roasted vanadium-chromium slag is completed by roasting and immersing in water with a high proportion of sodium-alkali salt to co-extract vanadium-chromium. residue. This type of residue contains 5 to 25% by weight of Na 2 O, and some residual vanadium, chromium, iron. If the high content of alkali metals is not recycled, the direct stockpiling will not only pollute the environment but also cause a waste of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B34/22C22B34/32
CPCY02P10/20
Inventor 高官金付自碧殷兆迁肖亮蒋霖李明伍珍秀彭毅张磊
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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