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A method for extracting vanadium from vanadium-containing stone coal mine

A stone coal mine and stone coal vanadium technology, applied in the direction of sulfur preparation/purification, process efficiency improvement, etc., can solve the problems of low vanadium recovery rate, environmental pollution, etc., and achieve the goal of shortening production time, reducing costs, and saving production costs Effect

Active Publication Date: 2020-04-07
四川亿明投资集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively solve the problems of environmental pollution and low recovery rate of vanadium in the process of vanadium recovery in the existing vanadium extraction method

Method used

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  • A method for extracting vanadium from vanadium-containing stone coal mine
  • A method for extracting vanadium from vanadium-containing stone coal mine
  • A method for extracting vanadium from vanadium-containing stone coal mine

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Effect test

Embodiment 1

[0032] A high-efficiency desulfurization pre-enrichment method for vanadium-containing stone coal, comprising the following steps:

[0033] A stone coal mine in Sichuan, the appearance is uneven in thickness, dark brown, V 2 o 5 The average content is about 0.353%. According to the method of the present invention, 68.86kg of ore is processed, crushed, and then sieved out +50mm, 50-30mm, 30-20mm, 20-10mm, 10mm-2mm, and -2mm with a dry sieve. Grain fractions, the weight of each fraction and where V 2 o 5 The content and distribution rate were detected, and the experimental results are shown in Table 1. Heat the remaining stone coal ore in a vacuum sintering furnace at a heating temperature of 680-700°C and a heating time of 5 minutes. During the heating process, sulfur element is recovered; the heated stone coal ore is dry-ground with a ball mill until it is completely passed 100-mesh sieve; then use a dry magnetic separator to carry out magnetic separation treatment. Magnet...

Embodiment 2

[0045] A high-efficiency desulfurization pre-enrichment method for vanadium-containing stone coal, comprising the following steps:

[0046] A stone coal mine in Sichuan, the appearance is uneven in thickness, dark brown, V 2 o 5 The average content is about 1.2%. According to the method of the present invention, 70.12kg of ore is processed, crushed, and then sieved out +50mm, 50-30mm, 30-20mm, 20-10mm, 10mm-2mm, and -2mm thick with a dry sieve. Grain fractions, the weight of each fraction and where V 2 o 5 The content and distribution rate were detected, and the experimental results are shown in Table 4. Heat the remaining stone coal ore in a vacuum sintering furnace at a heating temperature of 380-460°C and a heating time of 6 minutes. During the heating process, simple sulfur is recovered; the heated stone coal ore is dry-ground with a rod mill until All pass through a 60-mesh sieve; then dry-type magnetic separator is used for magnetic separation treatment. The magnetic...

Embodiment 3

[0059] A high-efficiency desulfurization pre-enrichment method for vanadium-containing stone coal, comprising the following steps:

[0060] A stone coal mine in Sichuan, the appearance is uneven in thickness, dark brown, V 2 o 5 The average content is about 0.895%. According to the method of the present invention, 66.54kg of ore is processed, crushed, and then sieved out +50mm, 50-30mm, 30-20mm, 20-10mm, 10mm-2mm, and -2mm with a dry sieve. Grain fractions, the weight of each fraction and where V 2 o 5 The content and distribution rate were detected, and the experimental results are shown in Table 7. Heat the remaining stone coal ore in a vacuum sintering furnace, the heating temperature is 1750-1856°C, and the heating time is 2 minutes. During the heating process, sulfur element is recovered; the heated stone coal ore is dry-ground with a ball mill until it is completely passed 100-mesh sieve; then use a dry magnetic separator to carry out magnetic separation treatment. M...

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Abstract

The invention discloses a method for extracting vanadium from vanadium-containing stone coal ore. The method comprises the following steps: smashing stone coal ore to be less than or equal to 50mm; screening and dividing the smashed stone coal ore into multiple grain sizes; heating the stone coal ore in suitable grain size under a vacuum or inert gas condition and recycling elemental sulfur; performing dry-process grinding and dry magnetic separation; mixing pre-concentrated concentrate of vanadium-containing stone coal ore after magnetic separation, cathode carbon, sulfuric acid and water ata ratio of 100:(5-20):(20-40):(15-30) and standing for a period of time; adding water and soaking, and the like. The method can effectively solve the problems of environmental pollution caused by thevanadium recycling process and low vanadium recycling rate of the present method, can solve the disposal problem of waste electrolytic aluminum cathode carbon, and has the advantages of low productioncost and high recycling rate.

Description

technical field [0001] The invention relates to the field of extracting vanadium from vanadium-containing stone coal, in particular to a method for extracting vanadium from vanadium-containing stone coal. Background technique [0002] As a rare metal with important strategic significance, vanadium is more and more widely used in aviation industry, atomic energy industry, aerospace industry, national defense cutting-edge industry and other fields, and it is an indispensable important resource. [0003] Vanadium-containing stone coal is an important vanadium ore resource unique to my country, and its reserves are extremely rich. Vanadium exists in vanadium muscovite in the form of vanadium oxide, and vanadium muscovite is in the form of flake or fan-like aggregates and flake stone coal. Symbiosis, the structure of vanadium muscovite is very stable, so it makes it more difficult to extract vanadium. Moreover, vanadium-bearing stone coal contains a large amount of impurities, su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B1/00C22B34/22C01B17/06
CPCC01B17/06C22B1/00C22B3/08C22B34/22Y02P10/20
Inventor 范仕明柯昌林索毅
Owner 四川亿明投资集团有限公司
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