Treatment process and device for indium alkali boiled residue

A treatment process and a technology for soda cooking slag, which is applied in the field of soda cooking slag treatment technology and its devices, can solve the problems of exothermic damage to tools and equipment, large acid consumption, etc., and achieve the effect of reducing acid consumption and overcoming severe heat release

Inactive Publication Date: 2015-04-29
济源豫金靶材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of large acid consumption and serious damage to tools and equipment due to exothermic heat in the traditional process, and provide a treatment process and device for indium alkali boiling slag;

Method used

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  • Treatment process and device for indium alkali boiled residue
  • Treatment process and device for indium alkali boiled residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: Step 1), add 50KG indium alkali boiled slag into the reaction tank, then add 50L pure water to dissolve indium alkali boiled slag, stir for 2~3h, the stirring rate is 40r / min, and then stand for 1h to obtain the upper layer hydrogen Sodium oxide clear liquid and bottom turbid liquid Ⅰ;

[0021] Step 2), release the supernatant sodium hydroxide clear liquid in step 1), store, the concentration of sodium hydroxide solution is 25mol / L;

[0022] Step 3), put the bottom turbidity I in step 1) into another reaction tank, add 20L of hydrochloric acid at the same time, the concentration of hydrochloric acid is 3mol / L, then add 100ml of hydrogen peroxide with a mass concentration of 30%, and stir for 2~3h After that, let it stand for 1 hour, then discharge the supernatant and add it to the reaction tank of the indium production system. The acidity of the obtained supernatant is 80g / L, and the bottom turbid II is discharged for storage.

[0023] The bottom turbid...

Embodiment 2

[0026] Example 2: Step 1), add 80KG indium alkali boiled slag into the reaction tank, then add 60L pure water to dissolve indium alkali boiled slag, stir for 2~3h, the stirring rate is 40r / min, and then stand for 1h to obtain the upper layer hydrogen Sodium oxide clear liquid and bottom turbid liquid Ⅰ;

[0027] Step 2), release the supernatant sodium hydroxide clear liquid in step 1), store, the concentration of sodium hydroxide solution is 30mol / L;

[0028] Step 3), put the bottom turbidity I in step 1) into another reaction tank, add 20L of hydrochloric acid at the same time, the concentration of hydrochloric acid is 3mol / L, then add 100ml of hydrogen peroxide with a mass concentration of 30%, and stir for 2~3h After that, let it stand for 1 hour, then drain the supernatant and add it to the reaction tank of the indium production system. The acidity of the obtained supernatant is 20g / L, and the bottom turbid II is discharged for storage.

[0029] The bottom turbid II...

Embodiment 3

[0032] Example 3: Step 1), add 30KG indium alkali boiled slag into the reaction tank, then add 40L pure water to dissolve indium alkali boiled slag, stir for 2~3h, the stirring rate is 40r / min, and then stand for 1h to obtain the upper layer hydrogen Sodium oxide clear liquid and bottom turbid liquid Ⅰ;

[0033] Step 2), discharge the supernatant sodium hydroxide clear liquid in step 1), store, the concentration of sodium hydroxide solution is 21mol / L;

[0034] Step 3), put the bottom turbidity I in step 1) into another reaction tank, add 5L of hydrochloric acid at the same time, the concentration of hydrochloric acid is 3mol / L, then add 50ml of hydrogen peroxide with a mass concentration of 30%, and stir for 2~3h After that, let it stand for 1 hour, and then drain the supernatant and add it to the reaction tank of the indium production system. The acidity of the obtained supernatant is PH=0.5, and the turbidity II at the bottom is discharged for storage.

[0035] The bo...

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Abstract

The invention belongs to the technical field of recovery of indium metal, and in particular relates to a treatment process and device for indium alkali boiled residue produced by smelting coarse indium through an indium block. The process comprises the following steps: adding the indium alkali boiled residue to be treated to a reaction tank; adding pure water to dissolve indium alkali boiled residue to obtain upper sodium hydroxide supernate and a lower turbid solution I; discharging and storing sodium hydroxide supernate; pumping the lower turbid solution I into another reaction tank, and synchronously adding acid and hydrogen peroxide; transferring the upper sodium hydroxide supernate into an indium production system reaction tank; discharging and storing the lower turbid solution II. The device comprises a first cylindrical tank equipped with a first agitator and a second cylindrical tank equipped with a second agitating tank, wherein the first cylindrical tank and the second cylindrical tank are communicated through a first lower solution conveying pipe; a conveying pump is arranged in the middle of the first lower solution conveying pipe. According to the technical scheme, the process and device have the advantages that sodium hydroxide in the alkali boiled residue can be utilized again; the dosage of acid can be reduced; the problem that tools and devices are damaged due to excessive heat release can be overcome.

Description

technical field [0001] The invention belongs to the technical field of indium metal recovery, and in particular relates to a process and a device for treating alkali boiling slag produced in the process of smelting crude indium by indium clusters. Background technique [0002] At present, sodium hydroxide is mainly added in the alkali boiling process of indium pellets. At present, the amount of sodium hydroxide added is generally 30% to 50% of the weight of indium pellets, so as to obtain a higher recovery rate of alkali boiling; It is relatively large, and the slag also contains a small amount of valuable metals such as indium, which can be recycled. The common treatment method of alkali cooking slag is to add hydrochloric acid, and then use zinc to replace the indium in it after acid dissolution. However, the whole process consumes a large amount of acid and generates a lot of heat, which is unfavorable to the reaction tank and wastes a large amount of alkali that can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B58/00C22B3/02
CPCY02P10/20
Inventor 原和平孙昊冯斐斐刘腾腾孟英豪付春艳
Owner 济源豫金靶材科技有限公司
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