Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recovering indium from indium-contained materials in zinc smelting

A zinc smelting and material technology, applied in the field of recovering indium, can solve the problems of difficult to solve emulsification problems, long process flow, high production cost, and achieve the effects of no emulsification phenomenon, accelerated reaction rate and high recovery rate.

Inactive Publication Date: 2018-03-23
欧艳
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have realized the comprehensive recovery of indium, but the process is lengthy, resulting in large loss of indium, low recovery rate of indium, high production cost, and it is always difficult to solve the emulsification problem in the extraction process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The method for recovering indium from the indium-containing material of zinc smelting of the present invention comprises the following steps:

[0027] Under microwave conditions, heat 500L of reducing leaching solution to 80°C. Under ultrasonic conditions, light calcium carbonate is slurried and slowly added until the final pH is 5.0. After 1 hour of reaction, liquid-solid separation is carried out, and the output contains In 4500g / t. The first gypsum slag with 2.43wt% Zn and 3.68wt% Fe.

[0028] The first gypsum slag was leached with zinc electrolytic waste solution for 2 hours at a temperature of 75°C to obtain an indium-rich solution and a second gypsum slag. The initial sulfuric acid concentration of the zinc electrolysis waste liquid is 95g / L, and the liquid-solid ratio of the indium-rich slag and the zinc electrolysis waste liquid is 4L / Kg. Among them, the main chemical components of the indium-rich solution are: Zn 55.27g / L, Fe 15.92g / L, Fe 2+ 11.40g / L, Fe 3+...

Embodiment 2

[0032] The method for recovering indium from the indium-containing material of zinc smelting of the present invention comprises the following steps:

[0033] Under microwave conditions, heat 400L of reducing leaching solution to 90°C. Under ultrasonic conditions, light calcium carbonate is slurried and slowly added until the final pH is 5.0. After 0.5 hours of reaction, liquid-solid separation is carried out, and the output contains In4610g / t, Zn3.06wt%, Fe3.64wt% first gypsum slag.

[0034] The first gypsum slag was leached with zinc electrolysis waste solution for 4 hours at a temperature of 60° C. to obtain an indium-rich solution and a second gypsum slag. The initial sulfuric acid concentration of the zinc electrolysis waste liquid is 90g / L, and the liquid-solid ratio between the indium-rich slag and the zinc electrolysis waste liquid is 3.5L / Kg. Among them, the main chemical components of the indium-rich solution are: Zn 58.72g / L, Fe 16.03g / L, Fe 2+ 10.90g / L, Fe 3+ 5....

Embodiment 3

[0038] The method for recovering indium from the indium-containing material of zinc smelting of the present invention comprises the following steps:

[0039] Under microwave conditions, heat 600L reduction leaching solution to 85°C. Under ultrasonic conditions, light calcium carbonate is slurried and slowly added until the final pH is 5.0. After 1 hour of reaction, liquid-solid separation is carried out, and the output contains In 4465g / t, Zn 2.87wt%, Fe3.13wt% first gypsum slag.

[0040] The first gypsum slag was leached with zinc electrolytic waste solution for 1 hour at a temperature of 85° C. to obtain an indium-rich solution and a second gypsum slag. The initial sulfuric acid concentration of the zinc electrolysis waste liquid is 110g / L, and the liquid-solid ratio of the indium-rich slag and the zinc electrolysis waste liquid is 5L / Kg. Among them, the main chemical components of the indium-rich solution are: Zn 53.64g / L, Fe 15.73g / L, Fe 2+ 11.40g / L, Fe 3+ 4.66g / L, In 1....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for recovering indium from indium-contained materials in zinc smelting. The method comprises the following steps: (A) the reduction leaching is performed on the indium-contained materials under microwave conditions to obtain reduction leaching liquid; (B) under ultrasonic conditions, limestone powder emulsion is used for performing neutralization, hydrolysis and indium sinking on the reduction leaching liquid to obtain iron-contained solution and indium-enriched first gypsum slag; (C) under acid conditions, indium in the first gypsum slag is leached out to obtain indium-enriched solution and second gypsum slag; (D) Cu2+ in the indium-enriched solution is reduced as a simple substance Cu, and Fe3+ is reduced as Fe2+ to obtain reduced liquid; and (E) charcoalpowder is used for purifying and decontaminating the reduced liquid to obtain purifying liquid; and the purifying liquid is extracted. The method has the advantages of generation of no hydrogen arsenide and no emulsifying phenomenon and high recovery rate of indium; and under microwave and ultrasonic effects, ions can be quickly exchanged to accelerate the reaction speed.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for recovering indium from indium-containing materials in zinc smelting. Background technique [0002] Some indium-containing materials are produced in the process of hydrometallurgy, such as indium-containing zinc slag, indium-containing soot from rotary kiln, and indium-containing soot from blast furnace ironmaking. In order to comprehensively recover the indium in these materials, these materials are subjected to hot acid leaching , and further extract indium from the solution. [0003] The indium grade of indium-containing materials is generally 200g / t-1000g / t, so the indium concentration in the leachate is relatively low. At present, there are two treatment methods for this kind of low-indium solution. The first method is to directly extract and enrich indium, but the solution processing volume is large and the loss of indium is large; the second method is to use a neutra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22B7/00C22B58/00
CPCC22B7/007C22B58/00Y02P10/20
Inventor 欧艳
Owner 欧艳
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com