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A method for pre-enriching vanadium by gravity separation from vanadium-containing stone coal

A technology of pre-enrichment and vanadium stone, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem of small processing capacity per unit area of ​​the shaking table, poor adaptability of fine-grained minerals, and influence on the industrial application of the process and other issues, to achieve the effect of easy implementation, low processing cost and strong applicability

Active Publication Date: 2018-03-27
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only applicable to the adsorbed vanadium-containing stone coal which accounts for a small part of the vanadium-containing stone coal. Sex is not strong
In addition, this method is essentially a combined process of gravity separation and flotation. Compared with a single gravity separation process, the process structure is more complicated and the production cost is higher, and the collector will cause chemical pollution to the subsequent vanadium extraction.
[0005] "A method for pre-enrichment of vanadium from vanadium-containing stone coal" (CN103008089A) patented technology, using "a shaking table for pre-enrichment of vanadium in vanadium-containing stone coal" (CN103008090A) to pre-enrich vanadium, A shaker gravity separation process is given, but the industrial application of the process is affected due to the small processing capacity per unit area of ​​the shaker

Method used

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  • A method for pre-enriching vanadium by gravity separation from vanadium-containing stone coal
  • A method for pre-enriching vanadium by gravity separation from vanadium-containing stone coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for reselecting and pre-enriching vanadium from vanadium-containing stone coal. The V of the vanadium-containing stone coal described in this embodiment 2 o 5 The grade is 0.50~0.62%. The concrete steps of the method described in this embodiment are:

[0034] (1) Crushing the vanadium-containing stone coal until the particle size is less than 0.074 mm, accounting for 78-90 wt%, to obtain a grinding product; then adjusting the grinding product to a pulp with a concentration of 27-35 wt%, to obtain pulp I.

[0035] (2) Introduce the ore pulp I into "a kind of sulfuric acid slag separation, purification and sorting equipment", adjust the horizontal flushing water flow rate to 34-40L / h, and carry out roughing. The interception point of roughing tailings is 50-60mm, and The interception point of selected ore is 80~92mm, and rougher tailings, concentrate I and rougher ore are obtained respectively.

[0036] (3) Adjust the roughing tailings to a slurry with a conc...

Embodiment 2

[0043]A method for reselecting and pre-enriching vanadium from vanadium-containing stone coal. The V of the vanadium-containing stone coal described in this embodiment 2 o 5 The grade is 0.59~0.71%. The concrete steps of the method described in this embodiment are:

[0044] (1) Crushing the vanadium-containing stone coal until the particle size is less than 0.074 mm, accounting for 64-76 wt%, to obtain a grinding product; then adjusting the grinding product to a pulp with a concentration of 10-18 wt%, to obtain pulp I.

[0045] (2) Introduce the ore pulp I into "a kind of sulfuric acid slag separation, purification and sorting equipment", adjust the horizontal flushing water flow rate to 10-18L / h, and carry out roughing. The interception point of roughing tailings is 42-54mm. The interception point of selected ore is 118~130mm, and rougher tailings, concentrate I and rougher ore are obtained respectively.

[0046] (3) Adjust the roughing tailings to a slurry with a concent...

Embodiment 3

[0054] A method for reselecting and pre-enriching vanadium from vanadium-containing stone coal. The V of the vanadium-containing stone coal described in this embodiment 2 o 5 The grade is 0.69~0.81%. The concrete steps of the method described in this embodiment are:

[0055] (1) Crushing the vanadium-containing stone coal until the particle size is less than 0.074mm, accounting for 50-62wt%, to obtain a grinding product; then adjusting the grinding product to a slurry with a concentration of 14-22wt%, to obtain a slurry I.

[0056] (2) Introduce the ore pulp I into "a kind of sulfuric acid slag separation, purification and sorting equipment", adjust the horizontal flushing water flow rate to 16-24L / h, and carry out roughing. The interception point of roughing tailings is 35-47mm. The intercept point of selected ore is 99~111mm, and rougher tailings, concentrate I and rougher ore are obtained respectively.

[0057] (3) Adjust the roughing tailings to a slurry with a concent...

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Abstract

The invention relates to a method for obtaining vanadium from vanadium-containing stone coal through gravity separation and pre-concentration. According to the technical scheme of the method, the vanadium-containing stone coal is smashed till the vanadium-containing stone coal with the grain size smaller than 0.074 mm accounts for 50 wt% to 90 wt%, an ore grinding product is obtained, ore pulp is regulated, roughing is conducted through a sulfuric-acid residue separation, purification and sorting device, and rougher tailings, concentrate I and rougher middlings are obtained. The ore pulp of the rougher tailings is regulated, scavenging is conducted through the sulfuric-acid residue separation, purification and sorting device, and tailings I and scavenged middlings are obtained. If the V2O5 grade of the scavenged middlings is larger than 0.9%, the scavenged middlings serve as concentrate II; and if the V2O5 grade of the scavenged middlings is smaller than 0.9%, the scavenged middlings are combined to the ore grinding product. A dispersing agent is added in the rougher middlings, a classification device is introduced, classification is conducted, and tailings II and concentrate III are obtained. The concentrate I, the concentrate II and the concentrate III are combined, and a concentrate product is obtained. The method has the beneficial effects of being simple in flow, low in processing cost, easy to implement, high in applicability, good in sorting effect and easy to industrialize.

Description

technical field [0001] The invention belongs to the technical field of vanadium pre-enrichment in vanadium-containing stone coal. In particular, it relates to a method for pre-enriching vanadium by gravity separation from vanadium-containing stone coal. Background technique [0002] Stone coal is a unique vanadium resource in my country, of which V 2 o 5 The reserve is 1.18×10 8 t, is V in vanadium-titanium magnetite 2 o 5 6.7 times of reserves, accounting for 87% of the total vanadium resources in my country. Extracting vanadium from stone coal is an important direction for the development of vanadium resources in my country. However, due to the low grade of vanadium in stone coal, the vanadium extraction process generally faces a series of problems such as large ore processing volume, high acid consumption, and difficulty in ion purification. Therefore, pre-enrichment of vanadium in ore dressing is an important way to improve vanadium grade, reduce ore processing cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B5/62B03B7/00
CPCB03B5/626B03B7/00
Inventor 张一敏刘鑫刘涛黄晶陈铁军包申旭
Owner WUHAN UNIV OF SCI & TECH
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