Method for producing vanadium pentoxide by ore containing vanadium and intermediate material containing vanadium

A technology of vanadium pentoxide and materials, applied in vanadium oxide and other directions, can solve the problems of reducing production cost and high recovery rate of vanadium

Inactive Publication Date: 2009-11-25
YUNNAN JUNCHI ENVIRONMENTAL PROTECTION TECHCO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to provide a kind of method of producing vanadium pentoxide from vanadium-containing ore and vanadium-containing intermediate material, which method overcomes the deficiency of the existing smelting method of extracting vanadium from vanad

Method used

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  • Method for producing vanadium pentoxide by ore containing vanadium and intermediate material containing vanadium

Examples

Experimental program
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Effect test

Embodiment 1

[0007] A stone coal raw ore contains 0.52% vanadium, after grinding, 98% passed through a 0.074mm sieve.

[0008] Mix the finely ground ore with sulfuric acid, the ratio of sulfuric acid is 15%, heat it to 250°C, keep it warm for 60min, and then leaching with water, the leaching liquid-solid ratio is 3:1, the leaching temperature is 80°C, and the leaching time is 60min. %. The leachate is neutralized with limestone powder to pH = 1.5, and then desiliconized with gelatin and No. The silicon back liquid is extracted with P204 20% + 80% kerosene, the extraction conditions are 1:1, the temperature is normal temperature, the shaking time is 5 minutes, and the extraction rate of vanadium can reach 99% through 9-stage countercurrent extraction. After extraction, the saturated organic phase is back-extracted with 20% dilute sulfuric acid, the stripping conditions are O / A=10:1, the temperature is normal temperature, the shaking time is 5min, the stripping stage is 11, and 99% of the v...

Embodiment 2

[0010] A stone coal raw ore contains 0.64% vanadium, after grinding, 98% passed through a 0.074mm sieve.

[0011] Mix the ground ore with sulfuric acid, the ratio of sulfuric acid is 20%, heat it to 300°C, keep it warm for 30min, and then leaching it with water. %. The leachate is neutralized with limestone powder to pH = 1.8, and then desiliconized with gelatin and No. The silicon liquid is extracted with P204 20% + 80% kerosene, the extraction conditions are 1:1, the temperature is normal temperature, the shaking time is 3 minutes, and the extraction rate of vanadium can reach 99% through 8-stage countercurrent extraction. After extraction, the saturated organic phase is back-extracted with 20% dilute sulfuric acid, the stripping conditions are O / A=10:1, the temperature is normal temperature, the shaking time is 3min, the stripping stage is 10, and 99% of the vanadium can be stripped. The vanadium-containing aqueous solution is neutralized and precipitated by ammonium bica...

Embodiment 3

[0013] A certain stone coal oxidized ore contains 0.78% vanadium, after grinding, 98% passed through a 0.043mm sieve.

[0014] Mix the ground ore with sulfuric acid, the ratio of sulfuric acid is 25%, heat it to 300°C, keep it warm for 30min, and then leaching it with water. %. The leachate is neutralized with limestone powder to pH = 2.0, and then desiliconized with gelatin and No. The silicon liquid is extracted with P204 20% + 80% kerosene, the extraction conditions are 1:1, the temperature is normal temperature, the shaking time is 3 minutes, and the extraction rate of vanadium can reach 99% through 9-stage countercurrent extraction. After extraction, the saturated organic phase is back-extracted with 25% dilute sulfuric acid, the stripping conditions are O / A=10:1, the temperature is normal temperature, the shaking time is 3min, the number of stripping stages is 11, and 99% of the vanadium can be stripped. The vanadium-containing aqueous solution is neutralized and preci...

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Abstract

A method for producing vanadium pentoxide by ore containing vanadium and intermediate material containing vanadium comprises: fine grinding the ore containing vanadium and the intermediate material containing vanadium into 90-95 % to 80-200 meshes; mixing the fine grinded mineral powder and sulfuric acid evenly to perform sulphation preprocessing; performing water soaking for the material after being sulphated; neutralizing the soaking solution to pH=1.5-2.5 by lime carbonate powder; performing the desiliconisation processing by gelatine and no.3 flocculating agent; aging and separating; extracting the desiliconisation solution, wherein, the extracting agent is P204, the extracting stage number is 8-10; inverse extracting the pregnant organic phase after extracting, wherein, the inverse extracting agent is dilute sulphuric acid, the inverse extracting stage number is 10-12, after inverse extracting, the water solution containing vanadium can be prepared to ammonium metavanadate product by sedimenting ammonium acid carbonate, the ammonium metavanadate can be prepared to qualified metallurgy level or industry level vanadium pentoxide product by calcining.

Description

technical field [0001] The invention belongs to a method for producing vanadium pentoxide by using vanadium-containing ore and vanadium-containing intermediate material. Background technique [0002] To extract vanadium or vanadium oxides from vanadium-containing ores and vanadium-containing intermediate materials, the currently used processes are mainly roasting leaching or all-wet processes. Roasting methods include sodium salt roasting, calcium salt roasting and salt-free roasting, etc. The purpose is to oxidize the vanadium in the ore to be easily leached by the solution, and then use extraction, ion exchange and other methods to separate the vanadium. This process is relatively mature and has the advantages of easy operation, but its disadvantages are also obvious, because roasting will produce harmful gases such as sulfur dioxide and chlorine, and its pollution and damage to the environment is particularly prominent in today's environment. In addition, there are still...

Claims

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Application Information

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IPC IPC(8): C01G31/02
Inventor 杨大锦廖元双徐军
Owner YUNNAN JUNCHI ENVIRONMENTAL PROTECTION TECHCO
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