METHOD FOR PRODUCING ALUMINA FROM METALLURGICAL MATERIAL CONTAINING ALUMINIUM

Title:

METHOD FOR PRODUCING ALUMINA FROM METALLURGICAL MATERIAL CONTAINING ALUMINIUM

Document Type and Number:

WIPO Patent Application WO/2011/150584

Kind Code:

A1

Abstract:

A method for producing alumina from metallurgical materials containing aluminium, comprises the following steps: decomposing the metallurgical materials containing aluminium with sulphuric acid to obtain aluminum sulfate solution, purifying aluminum sulfate solution, adding sodium carbonate or sodium bicarbonate into the purified aluminum sulfate solution to separate out aluminum hydroxide, calcining aluminum hydroxide to obtain alumina product, and regenerating the sodium carbonate, the sodium bicarbonate and the sulfuric acid. The method can regenerate sodium carbonate, sodium bicarbonate and sulfuric acid for reuse.

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Inventors:

WANG XUEWEN (CN)
WANG MINYU (CN)

Application Number:

PCT/CN2010/074917

Publication Date:

December 08, 2011

Filing Date:

July 02, 2010

Export Citation:

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Assignee:

UNIV CENTRAL SOUTH (CN)
WANG XUEWEN (CN)
WANG MINYU (CN)

International Classes:

C22B3/08; C01F7/428; C22B3/20; C22B21/00; C01F7/26

Foreign References:

CN1044111C	1999-07-14
CN100413981C	2008-08-27
CN101306803A	2008-11-19
JPS5329298A	1978-03-18

Attorney, Agent or Firm:

CENTRAL SOUTH UNIVERSITY PATENT CENTER (CN)
中南大学专利中心 (CN)

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