铀钼矿硫酸焙烧提取铀钼
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摘要
采用硫酸焙烧-水浸法强化过程高效提取铀钼矿中的铀钼,运用单因素试验考察焙烧过程参数对铀钼浸出率的影响。结果表明:硫酸焙烧过程推荐参数为酸矿质量比0.5:1、硫酸浓度82%、焙烧温度270℃、焙烧时间120 min。优化条件下验证实验所得焙烧熟料水浸后铀钼浸出率可达92%～93%和81%～84%,较现有低温直接酸浸过程铀浸出率(85%～90%)有一定提高,钼浸出率(45%～50%)有大幅提高。对原矿、焙烧熟料、浸出渣物相进行XRD分析后发现,铀钼矿经过硫酸焙烧和水浸后主要组分已由原矿中铝硅酸盐和SiO_2转变为浸出渣中SiO_2。
The intensification process consisting of sulfuric acid roasting – water leaching was conducted to extract U,Mo from U-Mo ore, and the single factor experiments were performed to investigate the effect of roasting process parameters on U and Mo leaching rates. The results show U and Mo leaching rates can reach 92%-93% and 81%-84%,respectively, at recommended processing parameters: mass ratio of H_2 SO_4 to ore 0.5:1, sulfuric acid concentration of 82%,roasting temperature of 270 ℃ and roasting time of 120 min, which have minor increase of U and substantial increase of Mo compared with present U and Mo leaching rates 85%-90% and 45%-50% from direct acid leaching process under low temperature, respectively. The XRD analysis results of original ore, clinker and leached residue show that the main phases of U-Mo ore endured sulfuric acid roasting and water leaching change from aluminosilicate and SiO_2 in raw ore to SiO_2 in leached residue.
The intensification process consisting of sulfuric acid roasting – water leaching was conducted to extract U,Mo from U-Mo ore, and the single factor experiments were performed to investigate the effect of roasting process parameters on U and Mo leaching rates. The results show U and Mo leaching rates can reach 92%-93% and 81%-84%,respectively, at recommended processing parameters: mass ratio of H_2 SO_4 to ore 0.5:1, sulfuric acid concentration of 82%,roasting temperature of 270 ℃ and roasting time of 120 min, which have minor increase of U and substantial increase of Mo compared with present U and Mo leaching rates 85%-90% and 45%-50% from direct acid leaching process under low temperature, respectively. The XRD analysis results of original ore, clinker and leached residue show that the main phases of U-Mo ore endured sulfuric acid roasting and water leaching change from aluminosilicate and SiO_2 in raw ore to SiO_2 in leached residue.
引文
[1]杨雨山,喻清,胡南,丁德馨.微波预处理对堆浸铀尾渣中铀浸出行为的影响及机理[J].中国有色金属学报,2016,26(6):1356-1363.YANG Yu-shan,YU Qing,HU Nan,DING De-xin.Effect of microwave pretreatment on leaching behavior of uranium in heap-leached uranium tailings and its mechanism[J].The Chinese Journal of Nonferrous Metals,2016,26(6):1356-1363.
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[11]LASHEEN T A,IBRAHIM M E,HASSIB H B,HELAL A S.Recovery of molybdenum from uranium bearing solution by solvent extraction with 5-Nonylsalicylaldoxime[J].Hydrometallurgy,2014,146:175-182.
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[14]LECARME C B,BARON P,CHEVALIER J L,MADIC C.Acidic organophosphorus solvent extraction process for the purification of molybdenum in tailings from uranium ore treatment[J].Hydrometallurgy,1997,47(1):57-67.
[15]王秀艳,马莹,张丽萍,张军,白彦,许延辉,郝先库.包头稀土精矿浓硫酸低温焙烧分解工艺研究[J].稀土,2003,24(4):29-31.WANG Xiu-yan,MA Ying,ZHANG Li-ping,ZHANG Jun,BAI Yan,XU Yan-hui,HAO Xian-ku.New technique of decomposition of rare earth concentrate[J].Chinese Rare Earths,2003,24(4):29-31.
[16]GUO X Y,LI D,PARK K H,TIAN Q H,WU Z.Leaching behavior of metals from a limonitic nickel laterite using a sulfation roasting leaching process[J].Hydrometallurgy,2009,99(3/4):144-150.
[17]LI D,PARK K H,WU Z,GUO X Y.Response surface design for nickel recovery from laterite by sulfation roasting leaching process[J].Transactions of Nonferrous Metals Society of China,2010,20(S1):s92-s96.
[18]刘万里,王学文,王明玉,胡健,张力萍.石煤提钒低温硫酸化焙烧矿物分解工艺[J].中国有色金属学报,2009,19(5):943-948.LIU Wan-li,WANG Xue-wen,WANG Ming-yu,HU Jian,ZHANG Li-ping.Mineral decomposition process of vanadium recovery from stone coal by low temperature sulphating roasting[J].The Chinese Journal of Nonferrous Metals,2009,19(5):943-948.
[19]刘康,薛济来,刘亮,罗文博,缪骏,朱骏.粉煤灰浓硫酸焙烧过程及其非等温动力学[J].化工学报,2015,66(4):1337-1343.LIU Kang,XUE Ji-lai,LIU Liang,LUO Wen-bo,MIAO Jun,ZHU Jun.Roasting process and non-isothermal kinetics for sulfating roasting of coal fly ash[J].CIESC Journal,2015,66(4):1337-1343.
[20]刘康,薛济来,朱骏,谭奇伟.粉煤灰硫酸焙烧熟料溶出液的除铁过程研究[J].中南大学学报(自然科学版),2016,47(10):3295-3301.LIU Kang,XUE Ji-lai,ZHU Jun,TAN Qi-wei.Process study on iron removal of leachate from coal fly ash sintered by concentrated sulfuric acid[J].Journal of Central South University(Science and Technology),2016,47(10):3295-3301.
[2]李密,张彪,张晓文,黄婧,丁德馨,叶勇军.从低品位铀尾矿中氧化浸出铀[J].中国有色金属学报,2017,27(1):145-154.LI Mi,ZHANG Biao,ZHANG Xiao-wen,HUANG Jing,DING De-xin,YE Yong-jun.Oxidizing leaching of uranium from low-grade uranium tailings[J].The Chinese Journal of Nonferrous Metals,2017,27(1):145-154.
[3]李密,黄婧,戴士祥,张晓文,张彪,丁德馨.采用HF和HClO4从铀尾矿中浸出铀的试验研究[J].中国矿业大学学报,2016,45(3):639-645.LI Mi,HUANG Jing,DAI Shi-xiang,ZHANG Xiao-wen,ZHANG Biao,DING De-xin.Extraction of uranium from uranium tailings by acid leaching with HF and HCl O4[J].Journal of Chinese University of Mining&Technology,2016,45(3):639-645.
[4]OHASHI Y,MURASHITA S,NOMURA M.Extraction of uranium from solid waste containing uranium and fluorine[J].Minerals Engineering,2014,61:32-39.
[5]COSTINE A,NIKOLOSKI A N,COSTA M D,CHONG K F,HACKL R.Uranium extraction from a pure natural brannerite mineral by acidic ferric sulphate leaching[J].Minerals Engineering,2013,53:84-90.
[6]邢会敏,刘艳,陈刚,高仁喜,田胜军.国外铀钼伴生矿综合回收技术[J].铀矿冶,2006,25(4):186-191.XING Hui-min,LIU Yan,CHEN Gang,GAO Ren-xi,TIANSheng-jun.Multipurpose recovery techniques of uraniummolybdenum intergrown ores at abroad[J].Uranium Mining and Metallurgy,2006,25(4):186-191.
[7]LOUNIS A,GAVACH C.Treatment of uranium leach solution by electrodialysis for anion impurities removal[J].Hydrometallurgy,1997,44(1/2):83-96.
[8]BABCOCK W C,FRIESEN D T,LACHAPELLE E D.Liquid membranes for separating uranium from vanadium and uranium from molybdenum[J].Journal of Membrane Science,1986,26(3):303-312.
[9]RAO K A,NATARAJAN R,PADMANABHAN N P H.Studies on recovery of copper,nickel,cobalt and molybdenum values from a bulk sulphide concentrate of an Indian uranium ore[J].Hydrometallurgy,2001,62(2):115-124.
[10]LASHEEN T A,AHMADY M E,HASSIB H B,HETAL A S.Oxidative leaching kinetics of molybdenum-uranium ore in H2SO4 using H2O2 as an oxidizing agent[J].Frontiers of Chemical Science and Engineering,2013,7(1):95-102.
[11]LASHEEN T A,IBRAHIM M E,HASSIB H B,HELAL A S.Recovery of molybdenum from uranium bearing solution by solvent extraction with 5-Nonylsalicylaldoxime[J].Hydrometallurgy,2014,146:175-182.
[12]LANDA E R.Leaching of molybdenum and arsenic from uranium ore and mill tailings[J].Hydrometallurgy,1984,13(2):203-211.
[13]FOURIE M,MAYER W C M H,WESTHUIZEN D J V D,KRIEG H M.Uranium recovery from simulated molybdenum-99 production residue using non-dispersive membrane based solvent extraction[J].Hydrometallurgy,2016,164:330-333.
[14]LECARME C B,BARON P,CHEVALIER J L,MADIC C.Acidic organophosphorus solvent extraction process for the purification of molybdenum in tailings from uranium ore treatment[J].Hydrometallurgy,1997,47(1):57-67.
[15]王秀艳,马莹,张丽萍,张军,白彦,许延辉,郝先库.包头稀土精矿浓硫酸低温焙烧分解工艺研究[J].稀土,2003,24(4):29-31.WANG Xiu-yan,MA Ying,ZHANG Li-ping,ZHANG Jun,BAI Yan,XU Yan-hui,HAO Xian-ku.New technique of decomposition of rare earth concentrate[J].Chinese Rare Earths,2003,24(4):29-31.
[16]GUO X Y,LI D,PARK K H,TIAN Q H,WU Z.Leaching behavior of metals from a limonitic nickel laterite using a sulfation roasting leaching process[J].Hydrometallurgy,2009,99(3/4):144-150.
[17]LI D,PARK K H,WU Z,GUO X Y.Response surface design for nickel recovery from laterite by sulfation roasting leaching process[J].Transactions of Nonferrous Metals Society of China,2010,20(S1):s92-s96.
[18]刘万里,王学文,王明玉,胡健,张力萍.石煤提钒低温硫酸化焙烧矿物分解工艺[J].中国有色金属学报,2009,19(5):943-948.LIU Wan-li,WANG Xue-wen,WANG Ming-yu,HU Jian,ZHANG Li-ping.Mineral decomposition process of vanadium recovery from stone coal by low temperature sulphating roasting[J].The Chinese Journal of Nonferrous Metals,2009,19(5):943-948.
[19]刘康,薛济来,刘亮,罗文博,缪骏,朱骏.粉煤灰浓硫酸焙烧过程及其非等温动力学[J].化工学报,2015,66(4):1337-1343.LIU Kang,XUE Ji-lai,LIU Liang,LUO Wen-bo,MIAO Jun,ZHU Jun.Roasting process and non-isothermal kinetics for sulfating roasting of coal fly ash[J].CIESC Journal,2015,66(4):1337-1343.
[20]刘康,薛济来,朱骏,谭奇伟.粉煤灰硫酸焙烧熟料溶出液的除铁过程研究[J].中南大学学报(自然科学版),2016,47(10):3295-3301.LIU Kang,XUE Ji-lai,ZHU Jun,TAN Qi-wei.Process study on iron removal of leachate from coal fly ash sintered by concentrated sulfuric acid[J].Journal of Central South University(Science and Technology),2016,47(10):3295-3301.
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