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Method for extracting vanadium by utilizing sodium-modified vanadium extraction tailings and converter vanadium slag

A technology for sodium extraction of vanadium and converter vanadium slag, applied in the chemical industry, can solve the problems of low extraction rate, achieve the effect of improving vanadium conversion rate, convenient operation, and low equipment requirements

Active Publication Date: 2021-02-02
攀枝花市锦利钒钛有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for extracting vanadium by utilizing sodiumized vanadium-extracted tailings and converter vanadium slag in order to overcome the problem of low extraction rate when utilizing sodiumized vanadium-extracting tailings to extract vanadium in the prior art. Firstly, the tailings of sodium vanadium extraction are pretreated, which improves the vanadium leaching rate during vanadium extraction. The process is simple and easy to use, low equipment requirements, convenient operation, low cost and other advantages, and has good social and economic benefits.

Method used

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  • Method for extracting vanadium by utilizing sodium-modified vanadium extraction tailings and converter vanadium slag

Examples

Experimental program
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Effect test

Embodiment 1

[0064] (1) Get 200g of the tailings of vanadium extraction in Table 1, and dry it in an oven until the water content is 0.1% by weight (the temperature of drying is 140°C, and the time of drying is 120min), and then the dried slag is dried in a ball mill. The dried sodium vanadium extraction tailings are ground to a particle size of less than 0.125mm;

[0065] (2) get the vanadium-extracting tailing slag after the grinding of 150g step (1), add the converter vanadium slag fine powder, 1.65g calcium sulfate, 0.5g manganese sulfate and 0.5g magnesium sulfate in 15g table 2, in Carry out mechanical activation in the high-energy ball mill, the rotating speed of mechanical activation is 500r / min, the time of mechanical activation is 30min, obtains 167.65g mixture;

[0066] (3) Put the mixture obtained in step (2) into a muffle furnace, and roast it at 820°C for 180min to obtain clinker (the discharge temperature of the clinker is 700°C), and V in the clinker 2 o 5 The content of ...

Embodiment 2

[0068] (1) Get 200g of the tailings of vanadium extraction in Table 1, and dry it in an oven until the water content is 0.05% by weight (the temperature of drying is 500°C, and the time of drying is 40min), and then the dried slag is dried in a ball mill. The dried sodium vanadium extraction tailings are ground to a particle size of less than 0.125mm;

[0069] (2) get the vanadium-extracting tailings of vanadium extraction after the fine grinding of 15g step (1), add the converter vanadium slag refined powder in 150g table 2, 4.95g calcium sulfate, 1.05g manganese sulfate and 1.0g magnesium sulfate, in Carry out mechanical activation in the high-energy ball mill, the rotating speed of mechanical activation is 800r / min, the time of mechanical activation is 5min, obtains 172.00g mixture;

[0070] (3) Put the mixture obtained in step (2) into a muffle furnace, and roast it at 820°C for 180min to obtain clinker (the discharge temperature of the clinker is 700°C), and V in the clin...

Embodiment 3

[0072] (1) Get 200g of the tailings of vanadium extraction in Table 1, and dry it in an oven until the water content is 0.1% by weight (the temperature of drying is 300°C, and the time of drying is 60min), and then dry it in a ball mill. The dried sodium vanadium extraction tailings are ground to a particle size of less than 0.125mm;

[0073] (2) Get the vanadium-extracting tailings after the grinding of 150g step (1), add the converter vanadium slag refined powder in 50g table 2, 6g calcium sulfate, 1.0g manganese sulfate and 1.0g magnesium sulfate, in high energy Carry out mechanical activation in the ball mill, the rotating speed of mechanical activation is 300r / min, the time of mechanical activation is 10min, obtains 208.00g mixture;

[0074] (3) Put the mixture obtained in step (2) into a muffle furnace, and roast it at 950°C for 70 minutes to obtain clinker (the discharge temperature of the clinker is 700°C), and V in the clinker 2 o 5 The content of the clinker is 4.6...

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Abstract

The invention relates to the technical field of chemical engineering, and discloses a method for extracting vanadium by utilizing sodium-modified vanadium extraction tailings and converter vanadium slag. The method comprises the following steps: (1) drying the sodium-modified vanadium extraction tailings with the water content of 3-20wt% until the water content is less than 1wt%, and then grindingthe dried sodium-modified vanadium extraction tailings until the particle size is less than 0.125mm; (2) adding converter vanadium slag fine powder and an activating agent into the ground sodium-modified vanadium extraction tailings obtained in the step (1), and carrying out mechanical activation to obtain a mixture; and (3) roasting the mixture obtained in the step (2) to obtain clinker, crushing the clinker, and then leaching to obtain an acidic vanadium solution, wherein in the step (1), the drying temperature is 100-500 DEG C, and the drying time is 40-180min. According to the method, thesodium-modified vanadium extraction tailings are pretreated, so that vanadium can be efficiently extracted, the process is simple and easy to use, the application range is wide, the cost is low, andgood social and economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for extracting vanadium by utilizing sodiumized vanadium extraction tailings and converter vanadium slag. Background technique [0002] The tailings produced after converter vanadium slag is roasted by sodium and vanadium is extracted by water leaching are called tailings for vanadium extraction by sodium. my country's output of vanadium oxide ranks first in the world, so the amount of sodium vanadium extraction tailings produced is very large. Restricted by technology and equipment in large state-owned enterprises, there are still 1-4% by weight of vanadium pentoxide in the tailings of sodium vanadium extraction, which still has high utilization value. In order to extract the vanadium oxide in the tailings of sodium vanadium extraction, some domestic private enterprises or private enterprises adopt methods such as multiple roasting and adding sodium chloride,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B1/02C22B7/00
CPCC22B1/02C22B7/006C22B34/22Y02P10/20
Inventor 刘元平刘元洪
Owner 攀枝花市锦利钒钛有限公司
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