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    • 1. 发明申请
    • ALUMINA AND CARBONATE PRODUCTION METHOD FROM Al-RICH MATERIALS WITH INTEGRATED CO2 UTILIZATION
    • 具有一体化二氧化碳利用的富含材料的氧化铝和碳酸盐生产方法
    • US20170015564A1
    • 2017-01-19
    • US15124487
    • 2015-03-11
    • Nordic Mining ASAInstitutt for Energiteknikk
    • Asunción ArandaJohann Mastin
    • C01F7/22C01D7/16C01F11/18C01D7/26
    • C01F7/22C01B32/60C01D7/16C01D7/26C01F5/24C01F7/306C01F7/56C01F11/18C01G49/0009C01G49/06Y02P20/142Y02P20/152
    • 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.
    • 一种具有一体化二氧化碳利用的富铝材料生产氧化铝和碳酸盐的方法,包括:将浓缩HCl中的富Al材料粉碎和浸出; 从金属氯化物溶液中分离出未反应的物质; 通过AlCl3.6H2O的结晶从溶液中分离出Al3 +; 用HCl回收煅烧AlCl3.6H2O; 二氧化碳沉淀金属碳酸盐; HCl和萃取胺的再生; 通过增加HCl浓度促进Al3 +分离; 煅烧在两个步骤中进行,一个在400和600℃的范围内,以产生富含HCl的气体,一个高于600℃以产生Al 2 O 3; 用于沉淀金属碳酸盐,将金属氯化物溶液与含有选择的胺的有机溶液混合并将该混合物与含CO 2的气体接触,从而也通过形成氯化铵盐络合物来提取HCl; 加热或化学处理有机溶液以再生胺用于再循环。
    • 4. 发明授权
    • Method of obtaining pure alumina by acid attack on aluminous minerals
containing other elements
    • 通过酸侵蚀获得含有其他元素的含铝矿物的纯氧化铝的方法
    • US4124680A
    • 1978-11-07
    • US876206
    • 1978-02-09
    • Joseph CohenAlain Adjemian
    • Joseph CohenAlain Adjemian
    • C01F7/20C01F7/26C01F7/56C01F7/22
    • C01F7/26C01F7/20
    • A method of obtaining alumina of high purity from aluminous mineral containing impurities in which the mineral is attacked with a sulphuric acid liquor followed by separation of a liquid phase from the resulting solid residue comprising(1) mixing the liquid phase with a liquor containing HCl and H.sub.2 SO.sub.4 at elevated temperature,(2) cooling the mixture with the precipitation of hydrated aluminum chlorosulphate having the formula AlSO.sub.4 Cl.6- 7H.sub. 2 O,(3) separating the precipitate from the remaining liquor which contains the major part of the impurities in solution,(4) suspending the separated precipitate in a hydrochloric acid liquor,(5) chlorinating the suspension by introduction of gaseous HCl with precipitation of AlCl.sub.3.6H.sub. 2 O,(6) separating the precipitated AlCl.sub.3.6H.sub. 2 O, and(7) pyrolizing the separated precipitate to produce alumina of high purity and gaseous HCl.
    • 从含有杂质的含铝矿物中获得高纯度的氧化铝的方法,其中矿物质用硫酸液体侵蚀,然后从所得固体残渣中分离出液相,包括(1)将含有HCl的液体与液相混合, H2SO4在升高的温度下,(2)用具有配方AlSO 4 Cl 6 -7H 2 O的水合氯化铝的沉淀物冷却混合物,(3)将沉淀物与含有溶液中主要部分杂质的剩余液体分离, 4)在氢氯酸液中悬浮分离的沉淀物,(5)用AlCl 3·6H 2 O沉淀引入气相色谱法沉淀悬浮液,(6)分离沉淀的AlCl3·6H2O,(7)将分离的沉淀物 生产高纯度和盐酸的氧化铝。