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    • 1. 发明授权
    • Process for recovering copper from copper ion containing aqueous
solutions
    • 从含铜离子的水溶液中回收铜的方法
    • US5006262A
    • 1991-04-09
    • US440126
    • 1989-11-21
    • John WeylsRay C. Lindemann
    • John WeylsRay C. Lindemann
    • C02F1/02C02F1/70C22B3/26C22B3/32
    • C02F1/70C02F1/025C22B3/0009C22B3/0021C22B3/0024Y02P10/234Y10S204/13Y10S210/912
    • A process for recovering copper from cupric ion containing aqueous solutions which comprises adding to the aqueous solution containing cupric ions an amount of reducing agent which corresponds from 0.1 to 10 moles of reducing agent per mole cupric ion, and heating the reaction mixture in the absence of oxygen in a closed vessel to a temperature of from 170.degree. to 240.degree. C., said reducing agent being one or more members of the group consisting of:(a) organic aldehydes RCHO (R=H, C.sub.1 to C.sub.5 alkyl)(b) carboxylic acids R COOH (R=H, linear or branched C.sub.1 to C.sub.5 alkyl)(c) hydroxycarboxylic acids R.sub.1 COOH (R.sub.1 =HO(CH.sub.2).sub.n, CH.sub.3 CH(OH)--, CH.sub.3 (CH.sub.2).sub.n, CH(OH)-- with n=1 to 3)(d) dicarboxylic acids R.sub.2 COOH (R.sub.2 =HOOC(CH.sub.2).sub.n with n=1 to 3)(e) amino acids R.sub.3 COOH (R.sub.3 =CH.sub.3 (CH.sub.m CH(NH.sub.2)-- (CH.sub.3).sub.2 (CH).sub.m CH(NH.sub.2 -- with m=1 to 3, CH.sub.3.CH(OH)(NH.sub.2), HOO C.CH(NH.sub.2).(CH.sub.2).sub.p -- with p=1 to 3,2-pyrrolidinyl, imidazolyl-- CH(NH.sub.2)--, indolyl--CH.sub.2 --(CH(NH.sub.2)--and alkali or ammonium salts thereof.(f) alcohols having more than 2 carbon atoms and up to 6 hydroxy groups.
    • 一种从含有铜离子的水溶液中回收铜的方法,包括向含有铜离子的水溶液中加入一定量的还原剂,其量为每摩尔铜离子为0.1至10摩尔还原剂,并且在不存在 密闭容器中的氧气至170℃至240℃的温度,所述还原剂是由以下组成的组中的一种或多种:(a)有机醛RCHO(R = H,C 1至C 5烷基)(b )羧酸R COOH(R ​​= H,直链或支链C1至C5烷基)(c)羟基羧酸R1COOH(R1 = HO(CH2)n,CH3CH(OH) - ,CH3(CH2)n,CH(OH) n = 1至3)(d)二羧酸R2COOH(R2 = HOOC(CH2)n,n = 1至3)(e)氨基酸R3 COOH(R3 = CH3(CHmCH(NH2) - (CH3) CH)mCH(NH 2 - ,其中m = 1至3,CH 3 .CH(OH)(NH 2),HOO C.CH(NH 2)(CH 2)p - ,其中p = 1至3,2-吡咯烷基,咪唑基-CH (NH 2) - ,吲哚基-CH 2 - (CH(NH 2) - 及其碱金属盐或铵盐;(f)具有多于2个碳原子的醇 d至多6个羟基。