Impurity-removed mud resource utilization method

A technology of resource utilization and phosphorus removal agent, applied in the field of hydrometallurgy, can solve the problems of high cost and low yield of removing impurity sludge, and achieve the effects of low consumption cost, low vanadium content and high vanadium leaching yield

Pending Publication Date: 2022-03-25
攀枝花市阳润科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem of high cost and low yield of recycling mud removal in the prior art

Method used

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  • Impurity-removed mud resource utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The method for resource utilization of mud removal is characterized in that it comprises the following steps:

[0051] a. Mix 100g of impurity removal mud (V%=3.61%, P%=0.818%) and 300mL of water in a 500mL beaker, add 4.5g of iron sulfate under stirring, and then adjust its pH to 2.8-3.0, Stir again for 1.5h (stirring speed is 350r / min), solid-liquid separation obtains purified high-vanadium liquid and low-acid leaching residue;

[0052] b. Put the low-acid leaching residue obtained in step a into a 500ml beaker, add 80ml of water and 6ml of sulfuric acid and mix well, then heat to a slight boil for 12min to obtain a slurry;

[0053] c. Dilute to 150ml according to the slurry, add ferrous sulfate (FeSO 4 ·7H 2 (0) 5.0g stirred and dipped for 0.5h, then adjusted its pH with sodium carbonate solution (150g / L) to be 2.8-3.0, and then separated the solid and liquid after stirring for 1h to obtain the separated vanadium liquid and residue, and use pH=2.9±0.1 sulfuric acid...

Embodiment 2

[0057] The method for resource utilization of mud removal is characterized in that it comprises the following steps:

[0058] a. Mix 100 g of impurity-removing mud (V%=3.61%, P%=0.818%) and 323 mL of the purified low-vanadium oxidation solution obtained in Example 1 in a 500 mL beaker, and adjust its pH to 2.8-3.0 with concentrated sulfuric acid , then stirred for 2h (stirring speed is 350r / min), solid-liquid separation to obtain purified high vanadium liquid and low acid leaching residue;

[0059] b. Put the low-acid leaching residue obtained in step a into a 500ml beaker, add 80ml of water and 6ml of sulfuric acid and mix well, then place it in a water bath at 90°C and soak for 30min to obtain a slurry;

[0060] c. Dilute to 150ml according to the slurry, add 1.2g of sodium metabisulfite and stir for 40min, then adjust the pH to 2.8-3.0 with sodium carbonate solution (150g / L), and then stir for 1.5h to separate the solid and liquid to obtain the separated vanadium liquid and...

Embodiment 3

[0064] The method for resource utilization of mud removal is characterized in that it comprises the following steps:

[0065] a. After mixing 100 g of impurity removal mud (V%=3.89%, P%=1.67%) and the purified low-vanadium oxidation solution 333 mL obtained in Example 2 in a 500 mL beaker, add 8.5 g of iron sulfate under stirring, Then adjust its pH to be 2.8-3.0, then stir for 2h (stirring speed is 350r / min), solid-liquid separation obtains purified high vanadium liquid and low acid leaching residue;

[0066] b. Put the low-acid leaching residue obtained in step a into a 500ml beaker, add 90ml of water and 7ml of concentrated sulfuric acid and mix well, then heat to a slight boil for 12min to obtain a slurry;

[0067] c. Dilute to 150ml according to the slurry, add 1.4g of sodium sulfite and stir for 0.5h, then use sodium carbonate solution (150g / L) to adjust its pH to 2.8-3.0, and then stir for 1.5h to separate the solid and liquid to obtain the separated vanadium liquid and...

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Abstract

The invention discloses a method for resource utilization of impurity-removed mud, and belongs to the field of hydrometallurgy. The method for resource utilization of the impurity-removed mud comprises the following steps: uniformly mixing the impurity-removed mud and a solvent in proportion, adding a phosphorus removal agent, adjusting the pH value, reacting, and filtering to obtain purified high-vanadium liquid and low-acid leaching residues; uniformly mixing the low-acid leaching residues, water and sulfuric acid in proportion, and then stirring and leaching to obtain slurry; diluting the slurry with water in proportion, then adding a reducing agent, stirring and leaching, adjusting the pH value, and filtering after reaction to obtain separated vanadium liquid and residues; an oxidizing agent is added into the separated vanadium liquid in proportion, and purified low-vanadium oxidation liquid is obtained after boiling reaction; and mixing the purified high-vanadium liquid with the sodium salt roasting-water leaching purified liquid with higher vanadium concentration in proportion, and then preparing V2O5 according to an acidic ammonium salt or sulfuric acid hydrolysis method. The method has the characteristics of low residue vanadium content, good phosphorus separation effect, less vanadium loss, high vanadium leaching yield and low cost, and can effectively solve the problems of high cost and low yield of recycling impurity removal mud in the prior art.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, and in particular relates to a method for resource utilization of impurities-removing mud. Background technique [0002] When adding calcium salt, aluminum salt or iron salt to the sodium roasting-water immersion liquid to remove impurities such as phosphorus and silicon to prepare a purification liquid, a large amount of impurity removal mud will be produced. The impurity removal mud generally contains 3-5% vanadium. Phosphorus 0.6-2.0%, water > 40%, and impurities such as calcium, silicon, sodium, iron, aluminum, etc. Over the years, the research on the method of recovering vanadium from impurities removal mud has continued, and there are many treatment methods in the existing technology, but the vanadium extraction process and its effect, the equipment used, the consumption of pharmaceutical materials, etc. in the existing technology are quite different. , and there are some problems. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B7/00
CPCC22B34/22C22B7/007Y02P10/20
Inventor 舒贵鹏陈荣庆
Owner 攀枝花市阳润科技有限公司
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