发明名称 |
En ny fremgangsmåte for fremstilling av alumina og karbonat fra aluminiumrike materialer med integrert CO2 utnyttelse |
摘要 |
A process for alumina and carbonate production from aluminium rich materials with integrated CO2 utilization, comprising: comminuting and leaching Al-rich materials in concentrated HCI; separating unreacted material from metal chloride solution; separating Al3+ from solution by crystallization of AlCl3.6H2O; calcination of AlCl3.6H2O with HCl recovery; precipitation of metal carbonates from CO2; regeneration of HCl and extractive amines; the Al3+ separation the facilitated by increasing HCl concentration; the calcination being performed in two steps, one in the range 400 and 600° C. to generate a HCl-rich gas and one above 600° C. to produce Al2O3; for precipitating metal carbonates, mixing the metal chloride solution with an organic solution containing a selected amine and contacting the mixture with a CO2-containing gas, thereby also extracting HCl by formation of an ammonium chloride salt complex; processing thermally or chemically the organic solution to regenerate the amine for recirculation. |
申请公布号 |
NO20140317(A1) |
申请公布日期 |
2015.09.14 |
申请号 |
NO20140000317 |
申请日期 |
2014.03.12 |
申请人 |
NORDIC MINING ASA;INSTITUTT FOR ENERGITEKNIKK |
发明人 |
ARANDA ASUNCIÓN;MASTIN JOHANN |
分类号 |
C01F7/22;C01F11/18;C22B3/10;C22B3/28 |
主分类号 |
C01F7/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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