Process for extracting indium aluminum from high-aluminum high-iron scum containing indium aluminum

A technology of aluminum iron and high-speed iron, applied in the field of wet indium extraction process

Inactive Publication Date: 2011-03-16
锡矿山闪星锑业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no process for extracting indium aluminum from the indium-containing aluminum iron slag of high-aluminum high-speed iron.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Crumble the indium-containing aluminum-iron slag raw material (containing In0.76%, Zn19%, Al22%, Fe47%) and pass it through an 80-mesh sieve; (2) Add 1200ml of water into a 3000ml beaker, start stirring, and add solid NaOH 200g, then add 300g of crushed and sieved aluminum iron slag, then add NaNO 3 120g, leached at 90-98°C for 6 hours, and then filtered, the aluminum in the material entered the filtrate to obtain 2280ml of filtrate, which was hydrolyzed to recover metal aluminum; the filter residue was rinsed with 500ml of hot water at 60°C to obtain 231.2g of alkali leaching residue; test results : Alkali leaching solution contains In0.015g / l, Zn3.56g / l; Alkali leaching residue contains In0.79%, Zn3.56%, Al 3.4%; Endpoint pH) into a 2000ml beaker filled with 1400ml of water, add 50ml of concentrated sulfuric acid, after leaching at 90~95℃ for 5.5 hours, add the reserved alkali leaching residue to adjust the final pH to 5.0, and then filter to obtain 179g of middle...

Embodiment 2

[0031] (1) Crumble the indium-containing aluminum-iron slag raw material (containing In0.73%, Zn20%, Al23%, Fe48%) and pass it through an 80-mesh sieve; (2) Add 2400ml of water into a 5000ml beaker, start stirring, and add solid NaOH 400g, then add 600g of crushed aluminum iron slag passed through 80 mesh sieve, then add NaNO 3 240g, leached at 90-98°C for 6 hours, then filtered, and washed the filter residue with 1000ml of hot water at 65°C to obtain 506.7g of alkali leaching residue and 3800ml of filtrate; test results: alkali leaching residue: In0.87%, Zn 4.85% ; Alkali leaching solution: In0.030g / l, Zn 5.87g / l; (3) Add 453.8% of the obtained alkali leaching residue (leave 10% to adjust the end point pH) in a 3000ml beaker filled with 2200ml water, add 100ml concentrated sulfuric acid, After leaching at 90-95°C for 5.5 hours, add the reserved alkali leaching residue to adjust the final pH to 5.0, and then filter to obtain 383.5g (dry) middle leaching residue and 1720ml midd...

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Abstract

The invention provides a process for extracting indium aluminum from high-aluminum high-iron scum containing indium aluminum. The process comprises the following steps of: (1) crushing raw materials containing indium aluminum scum and then sieving the crushed raw materials; (2) adding an oxidant in an amount which is 10 to 60 percent of the weight of under-sieve materials to the under-sieve materials, and alkaline leaching by using 10 to 42 mass percent caustic soda liquid to obtain alkaline leaching residues, wherein the weight ratio of the solid to the liquid, obtained by the alkaline leaching, is 1:4-6; (3) adding the alkaline leaching residues to 320 to 480g / l dilute sulfuric acid for neutral leaching, wherein the weight ratio of the solid to the liquid, obtained by the alkaline leaching, is 1:4-6, the leaching temperature is between 90 and 100 DEG C, the leaching time is 4 to 6 hours, and the pH value at the end point is controlled to between 4.5 to 5.0, and leaving indium in theresidues to obtain the neutral leaching residues; and (4) adding concentrated sulfuric acid to the neutral leaching residues for acid leaching so as to allow metal indium to enter the leaching solution, and performing extraction and reverse extraction on the leaching solution to obtain the indium. The extraction rate of the metal indium reaches 90 to 97 percent, and the extraction rate of the aluminum reaches 95 to 98 percent.

Description

Technical field [0001] The present invention involves a kind of wet -lifting process, especially the process of extracting aluminum aluminum from high -aluminum high -speed rail components. Background technique [0002] Firefish refining process with aluminum and iron removal produces aluminum iron residue. The main price of aluminum iron residue is zinc, and it also contains valuable metals such as cymbal, aluminum, and lead, with an average containing IN0.75%, ZN16%, AL23, AL23%, FE48%, has a high comprehensive recycling value of valuable metals, can be separated from vacuum furnaces to use vacuum furnaces.However, there is no process of extracting aluminum aluminum from high -aluminum high -speed rail -containing aluminum iron residue. Invention content [0003] The purpose of the present invention is to provide a process from extracting aluminum aluminum from high -high -high -high -speed rail. [0004] The technical solution of the present invention is: (1) Siege of 70-90 m...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C22B7/04C22B3/12C22B3/08C22B21/00C22B58/00
CPCY02P10/20
Inventor廖佳乐谈应顺曾雁欧阳慧曾美兰姚兴娜
Owner锡矿山闪星锑业有限责任公司