斑岩型铜钼矿的浮选新药剂与新工艺研究
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摘要
我国铜钼资源中大部分属于多金属复杂矿,依靠现有浮选药剂和浮选工艺,往往不能实现多金属铜钼矿资源的综合高效回收,因此,迫切需要进行新型捕收剂和浮选工艺的研究与开发。
论文以正己酰氯为原料合成了N,N-二正烷基-N'-烷基酰基硫脲(简称DU),合成条件为：正己酰氯：KSCN:仲胺：PEG-400(摩尔比)=1：1.08：1.10：0.03,取代反应时间为4h,加成反应时间为2h,反应温度为20℃,产品为固体,产率为96.94%,纯度为91.10%,收率为88.31%。以苯甲酰氯为原料合成了系列N-(烷氧基丙基)-N’-苯甲酰基硫脲(简称MU),合成条件为：苯甲酰氯:KSCN:胺：PEG-400(摩尔比)=1：1.50：1.10：0.03,取代反应时间1h,加成反应时间1h,反应温度为20℃,产品为固体,产率为80.13%,纯度为83.28%,收率为76.73%。采用紫外吸收光谱、红外光谱、核磁共振氢谱和碳谱等分析测试方法对酰基硫脲产品进行了结构表征。采用紫外光谱和红外光谱分析,考察了酰基硫脲产品与金属离子的作用；采用紫外光谱分析考察了溶液pH值、捕收剂初始浓度等因素对DU在不同粒级黄铜矿表面吸附的影响。通过无捕收剂、中性油和非极性离子等浮选研究,从Pearson软硬酸碱理论、量子化学计算、分子轨道理论、红外光谱、界面化学性能参数、接触角、表面能、界面作用、矿物浮选行为,以及工艺流程与药剂试验研究等方面着手,从捕收剂复配的角度,以合成的DU和MU为基本原料,合成了CSU-300复配捕收剂。
德兴斑岩型铜钼矿等可浮研究表明：在一段磨矿条件下铜钼的等可浮选,粗选的磨矿细度为-0.074mm为65%,粗选石灰用量1000g/t(pH=9.0),捕收剂CSU-300的用量为64g/t,获得含钼0.294%,含铜15.32%的钼铜粗精矿,钼的回收率达79.43%,铜的回收率为83.23%。铜钼混合精矿精选试验表明：硫化钠用量为300g/t,硫化钠精选铜钼分离工艺比空白精选铜钼分离工艺能更好地实现一段磨矿钼的等可浮选,获得含钼为1.22%和铜25.92%的铜钼粗精矿,钼回收率为83.85%,钼富集比高达142倍。硫化钠精选铜钼分离工艺选钼能大幅增加钼的选别指标,其铜和金的选别指标也优于混合浮选和快速浮选两种现场生产工艺流程。与混合浮选和快速浮选相比,钼回收率增加23.68%和14.72%,钼的富集比增加3.3～2.8倍。铜的总回收率提高1.56%和2.5%；金的回收率提高3.11%和3.96%。等可浮选钼新工艺的工业试验表明：对于含铜0.381%、含钼0.0064%的原矿,获得了含铜25.47%、含钼0.655%钼粗精矿,钼回收率为77.06%,钼一段富集比为101.72；铜一段总回收率为87.56%,硫一段总回收率为76.35%。与同期磨1工段0～1#系统对比,铜、硫、金的一段浮选指标均有所改善；与同期磨2和磨3工段选钼指标对比,钼回收率提高了24.35个百分点,钼富集比提高了62.83。对等可浮选钼新工艺产生的钼粗精矿进行了铜钼分离闭路试验结果表明,采用CSU-300捕收剂等可浮选钼工艺,由于钼粗精矿品位较高,并且未受黄药等强力捕收剂的作用,铜钼分离比较容易。在硫化钠总用量为18.5kg/t,水玻璃用量1.2kg/t,煤油130g/t的药剂条件下,可以获得钼品位48.83%、含铜0.83%的钼精矿,钼回收率90.55%；铜精矿品位27.08%,铜回收率99.96%。
对多宝山斑岩型铜钼矿,在粗磨情况下,采用钼铜等可浮,合适的一段磨矿细度为-0.076mm(-200目)占68%左右；捕收剂CSU-300用量为30～40g/t；起泡剂2#油用量为14g/t；抑制剂石灰用量为1.5kg/t；兼顾中矿返回对浮选过程的影响,在等可浮选作业中,捕收剂、起泡剂匹配关系是CSU-300:35g/t,2#油:14g/t。强化选铜合适的再磨细度是-0.045mm(-325目)为96%,采用丁基黄药与丁胺黑药(3：1)为捕收剂,铜钼等可浮选-强化选铜试验方案,获得铜28.77%、钼0.80%的铜钼混合精矿,钼回收率达90.71%以上；得到了铜的品位为15.88%,回收率9.77%的铜精矿,铜精矿合并后,铜品位达26.36%,回收率达86.76%。铜钼分离试验表明：合适的再磨细度为-0.045mm(-325目)占98%,适宜的硫化钠用量在1000g/t,适宜的六偏磷酸钠用量为250g/t(50×5)。采用摇床进行精选后,钼精矿品位为48.63%,其中含铜为0.73%,钼的回收率为87.40%；得到了含碳为18.6%、钼为3.31%、铜为1.30%的碳钼中矿,相对于原矿而言,该部分碳钼中矿产率小(0.036%)。扩大连选试验研究表明：采用推荐流程与药剂制度下,铜品位28.26%、钼品位0.13%、金品位8.38g/t和银品位102.52g/t的铜精矿,铜、金和银回收率分别为92.60%、78.31%和63.58%；以及含钼为48.55%、铜为0.78%的钼精矿,钼综合回收率可达70.65%以上；另外获得产率较低的含碳为19.25%、钼为5.19%和铜为1.93%的碳钼中矿。10t/d规模的半工业试验研究表明：在推荐流程与药剂制度下,得到含铜为24.33%、钼为0.19%、金为8.91g/t和银为150.56g/t的铜精矿,其中铜、金和银回收率分别为72.79%、65.55%和60.11%；含钼为47.14%和铜为0.88%的钼精矿,钼综合回收率可达71.52%,钼的富矿比达到4000倍；产率相对低的含碳为18.76%、钼为4.93%和铜为2.98%的碳钼中矿。
Most of the copper-molybdenum resources in China are multi-metal complex ores, however, the existing flotation reagents and flotation processes for copper-molybdenum polymetallic complex sulphide ores often fail to achieve appropriate comprehensive recovery of resources. Therefore, it is an urgent need to research and develop new collectors and flotation processes.
N,N-di-n-alkyl-N'-alkyl acylthiourea (DU) was synthesized using n-hexanoyl chloride as a raw material, and the synthesis conditions were as following:n-hexanoyl chloride:KSCN:secondary amine:PEG-400(molar ratio)=1:1.08:1.10:0.03, substitution reaction of4h, addition reaction of2h, reaction temperature of20℃. The product is a solid product with productivity of96.94%, purity of91.10%, and yield of88.31%. N-(alkoxy-propyl)-N'-benzoyl-thiourea (MU) was synthesized using benzoyl chloride as a raw material, and the synthesis conditions were as following:benzoyl chloride:KSCN:amine:PEG-400(molar ratio)=1:1.50:1.10:0.03, substitution reaction of1h, addition reactions of1h, the reaction temperature of20. The product is a solid product with productivity of80.13%, its was purity83.28%, and the yield was76.73%. UV absorption spectroscopy, infrared spectroscopy,1H NMR and I3C NMR were taken to characterize the acylthiourea products. UV spectra and infrared spectroscopy means were performed to investigate the interaction of acylthiourea and metal ions; the effect of pH, initial concentration of acylthiourea on the adsorption of acylthiourea on the surface of chalcopyrite with different size fractions were studied with UV spectroscopy analysis. According to flotation without collectors, or with neutral oil and non-polar ion collectors, the flotation behaviors and performance of copper-molybdenum ores were investigated based on Pearson hard and soft acid-base theory, quantum chemistry, molecular orbital theory and with infrared spectroscopy, interfacial chemical performance parameters, contact angle, surface energy and interface action analyses. Base on the results of flotation process and agent studies, compound collector CSU-300was invented, using DU and MU as raw materials.
The flotation results of Dexing porphyry copper-molybdenum ore showed that Cu-Mo rougher concentrate containing15.32%Cu,0.294%Mo, recovers of Cu83.23%and Mo79.43%was achieved under the condition of rougher grinding fineness-0.074mm65%, roughing lime dosage1000g/t (pH=9.0), the amount of the CSU-300collector64g/t. The concentration result of the Cu-Mo of Dexing Cu-Mo ore indicated that the separation process with sodium sulfide is better than the bank one which can get the Cu-Mo rough concentrate with the index of1.221%Mo,25.92%Cu, the recovery of Mo83.85%,enrichment ratio142. The sodium sulfide cleaning separation process of Cu-Mo not only can improve the beneficiation index of Mo sharply, but also the beneficiation index of Cu and Au are both better than mixing flotation or partly mixing flotation. Compared to mixing flotation or flash flotation, Mo recovery rate was enhanced23.68%,14.72%respectively and enrichment ratio raised3.3to2.8times. The recovery of Cu increased1.56%,2.5%respectively, Au3.11%,3.96%. The industrial tests of flotability ranking flotation of Mo indicated that under the condition of0.381%Cu, Mo0.0064%of Dexing mine, the Mo concentrate could be achieved with Mo0.655%, Cu25.47%, Mo enrichment ratio101.72, the recovery of Mo77.06%. A section total recovery of copper was87.56%, sulfur76.35%. Comparing with the same period in grinding section1#, system0-1#, the flotation indexes of copper, sulfur, gold both have been improved; Comparing with flotation indexes of Mo in grinding section2#and3#of the same period, Mo recovery rate has raised24.35%, Mo enrichment ratio raised62.83. The Cu-Mo Separation test under the small closed-circuit experiment of Mo concentrate produced by preferential flotation of Mo process has been investigated. The result indicated that CSU-300collector used in the preferential flotation of Mo process can make Cu-Mo Separation much easier, due to higher molybdenum rougher concentrate grade and unaffected xanthate the role of other powerful collector. Under the flotation conditions of sodium sulfide18.5kg/t, sodium silicate1.2kg/t, kerosene130g/t, the technical indexes were obtained:the Mo concentrate assays48.83%, Cu0.83%, recovery of Mo90.55%; the copper concentrate assays27.08%, recovery of Cu99.96%.
For copper-molybdenum mine in Duobaoshan mine in kibbled case, molybdenum, copper and other floating appropriate period of grinding fineness-0.076mm (-200mesh) accounted for about68%; the dosage of CSU-30030～40g/t;2#oil frother14g/t; lime dosage1.5kg/t; considering the influence on the flotation process mixed by mid-core, the matching relationship is CSU-300:35g/t,2oil:14g/t. The ore is floated by the bulk flotation, then concentrates copper by strengthening flotation, the indexes of Cu-Mo mixed concentrate copper grade28.77%molybdenum0.80%and recovery of the Mo90.71%are achieved as well as Cu concentrate contains15.88%Cu, the recovery of Cu9.77%under the condition of rougher grinding fineness-0.0454mm96%, the mixture collector of butyl xanthate butylamine and black drug (3:1). When copper concentrate was mixed, copper grade is26.36%, the recovery86.76%.In order to realize the separation of the Cu-Mo of Duobaoshan copper mine, the Cu-Mo mix concentrate should be re-ground and the reasonable fineness is45μm-98%. In a dosage of Na2S is1000g/t and (NaPO3)6250g/t (50×5).The Mo concentrate containing48.63%Mo,0.73%Cu, the recovery of Mo87.40%as well as C-Mo middling with18.6%C,3.31%Mo,1.30%Cu. Compared with ore, the yield of this middling is less (0.036%). The industrial test results of Duobaoshan Cu-Mo ore indicate that the Cu concentrate can be achieved with the index of Cu grade28.26%, Mo0.13%, Au8.38g/t, Ag102.52g/t and the Mo concentrate contain Cu0.78%, Mo48.55%, Ag recovery63.58%, Cu92.60%, Au78.31%and comprehensive recovery of Mo up to70.65%by under the program flowsheet and the recommended reagent system. At the same time, the C-Mo middling with C19.25%, Mo5.19%, Cu1.93%was obtained. The results of semi-industrial test with the scale of10t/d indicate that the Cu concentrate and the Mo concentrate can be achieved with the index of Cu grade24.33%, Mo0.19%, Au8.91g/t, Ag150.56g/t, Cu recovery72.79%, Au65.55%, Ag60.11%and Mo grade47.14%, Cu0.88%, Mo recovery71.52%, Mo enrichment ratio4000respectively under the program flowsheet and the recommended reagent system. At the same time, the C-Mo middling with C18.76%, Mo4.93%, Cu2.98%was obtained.
论文以正己酰氯为原料合成了N,N-二正烷基-N'-烷基酰基硫脲(简称DU),合成条件为：正己酰氯：KSCN:仲胺：PEG-400(摩尔比)=1：1.08：1.10：0.03,取代反应时间为4h,加成反应时间为2h,反应温度为20℃,产品为固体,产率为96.94%,纯度为91.10%,收率为88.31%。以苯甲酰氯为原料合成了系列N-(烷氧基丙基)-N’-苯甲酰基硫脲(简称MU),合成条件为：苯甲酰氯:KSCN:胺：PEG-400(摩尔比)=1：1.50：1.10：0.03,取代反应时间1h,加成反应时间1h,反应温度为20℃,产品为固体,产率为80.13%,纯度为83.28%,收率为76.73%。采用紫外吸收光谱、红外光谱、核磁共振氢谱和碳谱等分析测试方法对酰基硫脲产品进行了结构表征。采用紫外光谱和红外光谱分析,考察了酰基硫脲产品与金属离子的作用；采用紫外光谱分析考察了溶液pH值、捕收剂初始浓度等因素对DU在不同粒级黄铜矿表面吸附的影响。通过无捕收剂、中性油和非极性离子等浮选研究,从Pearson软硬酸碱理论、量子化学计算、分子轨道理论、红外光谱、界面化学性能参数、接触角、表面能、界面作用、矿物浮选行为,以及工艺流程与药剂试验研究等方面着手,从捕收剂复配的角度,以合成的DU和MU为基本原料,合成了CSU-300复配捕收剂。
德兴斑岩型铜钼矿等可浮研究表明：在一段磨矿条件下铜钼的等可浮选,粗选的磨矿细度为-0.074mm为65%,粗选石灰用量1000g/t(pH=9.0),捕收剂CSU-300的用量为64g/t,获得含钼0.294%,含铜15.32%的钼铜粗精矿,钼的回收率达79.43%,铜的回收率为83.23%。铜钼混合精矿精选试验表明：硫化钠用量为300g/t,硫化钠精选铜钼分离工艺比空白精选铜钼分离工艺能更好地实现一段磨矿钼的等可浮选,获得含钼为1.22%和铜25.92%的铜钼粗精矿,钼回收率为83.85%,钼富集比高达142倍。硫化钠精选铜钼分离工艺选钼能大幅增加钼的选别指标,其铜和金的选别指标也优于混合浮选和快速浮选两种现场生产工艺流程。与混合浮选和快速浮选相比,钼回收率增加23.68%和14.72%,钼的富集比增加3.3～2.8倍。铜的总回收率提高1.56%和2.5%；金的回收率提高3.11%和3.96%。等可浮选钼新工艺的工业试验表明：对于含铜0.381%、含钼0.0064%的原矿,获得了含铜25.47%、含钼0.655%钼粗精矿,钼回收率为77.06%,钼一段富集比为101.72；铜一段总回收率为87.56%,硫一段总回收率为76.35%。与同期磨1工段0～1#系统对比,铜、硫、金的一段浮选指标均有所改善；与同期磨2和磨3工段选钼指标对比,钼回收率提高了24.35个百分点,钼富集比提高了62.83。对等可浮选钼新工艺产生的钼粗精矿进行了铜钼分离闭路试验结果表明,采用CSU-300捕收剂等可浮选钼工艺,由于钼粗精矿品位较高,并且未受黄药等强力捕收剂的作用,铜钼分离比较容易。在硫化钠总用量为18.5kg/t,水玻璃用量1.2kg/t,煤油130g/t的药剂条件下,可以获得钼品位48.83%、含铜0.83%的钼精矿,钼回收率90.55%；铜精矿品位27.08%,铜回收率99.96%。
对多宝山斑岩型铜钼矿,在粗磨情况下,采用钼铜等可浮,合适的一段磨矿细度为-0.076mm(-200目)占68%左右；捕收剂CSU-300用量为30～40g/t；起泡剂2#油用量为14g/t；抑制剂石灰用量为1.5kg/t；兼顾中矿返回对浮选过程的影响,在等可浮选作业中,捕收剂、起泡剂匹配关系是CSU-300:35g/t,2#油:14g/t。强化选铜合适的再磨细度是-0.045mm(-325目)为96%,采用丁基黄药与丁胺黑药(3：1)为捕收剂,铜钼等可浮选-强化选铜试验方案,获得铜28.77%、钼0.80%的铜钼混合精矿,钼回收率达90.71%以上；得到了铜的品位为15.88%,回收率9.77%的铜精矿,铜精矿合并后,铜品位达26.36%,回收率达86.76%。铜钼分离试验表明：合适的再磨细度为-0.045mm(-325目)占98%,适宜的硫化钠用量在1000g/t,适宜的六偏磷酸钠用量为250g/t(50×5)。采用摇床进行精选后,钼精矿品位为48.63%,其中含铜为0.73%,钼的回收率为87.40%；得到了含碳为18.6%、钼为3.31%、铜为1.30%的碳钼中矿,相对于原矿而言,该部分碳钼中矿产率小(0.036%)。扩大连选试验研究表明：采用推荐流程与药剂制度下,铜品位28.26%、钼品位0.13%、金品位8.38g/t和银品位102.52g/t的铜精矿,铜、金和银回收率分别为92.60%、78.31%和63.58%；以及含钼为48.55%、铜为0.78%的钼精矿,钼综合回收率可达70.65%以上；另外获得产率较低的含碳为19.25%、钼为5.19%和铜为1.93%的碳钼中矿。10t/d规模的半工业试验研究表明：在推荐流程与药剂制度下,得到含铜为24.33%、钼为0.19%、金为8.91g/t和银为150.56g/t的铜精矿,其中铜、金和银回收率分别为72.79%、65.55%和60.11%；含钼为47.14%和铜为0.88%的钼精矿,钼综合回收率可达71.52%,钼的富矿比达到4000倍；产率相对低的含碳为18.76%、钼为4.93%和铜为2.98%的碳钼中矿。
Most of the copper-molybdenum resources in China are multi-metal complex ores, however, the existing flotation reagents and flotation processes for copper-molybdenum polymetallic complex sulphide ores often fail to achieve appropriate comprehensive recovery of resources. Therefore, it is an urgent need to research and develop new collectors and flotation processes.
N,N-di-n-alkyl-N'-alkyl acylthiourea (DU) was synthesized using n-hexanoyl chloride as a raw material, and the synthesis conditions were as following:n-hexanoyl chloride:KSCN:secondary amine:PEG-400(molar ratio)=1:1.08:1.10:0.03, substitution reaction of4h, addition reaction of2h, reaction temperature of20℃. The product is a solid product with productivity of96.94%, purity of91.10%, and yield of88.31%. N-(alkoxy-propyl)-N'-benzoyl-thiourea (MU) was synthesized using benzoyl chloride as a raw material, and the synthesis conditions were as following:benzoyl chloride:KSCN:amine:PEG-400(molar ratio)=1:1.50:1.10:0.03, substitution reaction of1h, addition reactions of1h, the reaction temperature of20. The product is a solid product with productivity of80.13%, its was purity83.28%, and the yield was76.73%. UV absorption spectroscopy, infrared spectroscopy,1H NMR and I3C NMR were taken to characterize the acylthiourea products. UV spectra and infrared spectroscopy means were performed to investigate the interaction of acylthiourea and metal ions; the effect of pH, initial concentration of acylthiourea on the adsorption of acylthiourea on the surface of chalcopyrite with different size fractions were studied with UV spectroscopy analysis. According to flotation without collectors, or with neutral oil and non-polar ion collectors, the flotation behaviors and performance of copper-molybdenum ores were investigated based on Pearson hard and soft acid-base theory, quantum chemistry, molecular orbital theory and with infrared spectroscopy, interfacial chemical performance parameters, contact angle, surface energy and interface action analyses. Base on the results of flotation process and agent studies, compound collector CSU-300was invented, using DU and MU as raw materials.
The flotation results of Dexing porphyry copper-molybdenum ore showed that Cu-Mo rougher concentrate containing15.32%Cu,0.294%Mo, recovers of Cu83.23%and Mo79.43%was achieved under the condition of rougher grinding fineness-0.074mm65%, roughing lime dosage1000g/t (pH=9.0), the amount of the CSU-300collector64g/t. The concentration result of the Cu-Mo of Dexing Cu-Mo ore indicated that the separation process with sodium sulfide is better than the bank one which can get the Cu-Mo rough concentrate with the index of1.221%Mo,25.92%Cu, the recovery of Mo83.85%,enrichment ratio142. The sodium sulfide cleaning separation process of Cu-Mo not only can improve the beneficiation index of Mo sharply, but also the beneficiation index of Cu and Au are both better than mixing flotation or partly mixing flotation. Compared to mixing flotation or flash flotation, Mo recovery rate was enhanced23.68%,14.72%respectively and enrichment ratio raised3.3to2.8times. The recovery of Cu increased1.56%,2.5%respectively, Au3.11%,3.96%. The industrial tests of flotability ranking flotation of Mo indicated that under the condition of0.381%Cu, Mo0.0064%of Dexing mine, the Mo concentrate could be achieved with Mo0.655%, Cu25.47%, Mo enrichment ratio101.72, the recovery of Mo77.06%. A section total recovery of copper was87.56%, sulfur76.35%. Comparing with the same period in grinding section1#, system0-1#, the flotation indexes of copper, sulfur, gold both have been improved; Comparing with flotation indexes of Mo in grinding section2#and3#of the same period, Mo recovery rate has raised24.35%, Mo enrichment ratio raised62.83. The Cu-Mo Separation test under the small closed-circuit experiment of Mo concentrate produced by preferential flotation of Mo process has been investigated. The result indicated that CSU-300collector used in the preferential flotation of Mo process can make Cu-Mo Separation much easier, due to higher molybdenum rougher concentrate grade and unaffected xanthate the role of other powerful collector. Under the flotation conditions of sodium sulfide18.5kg/t, sodium silicate1.2kg/t, kerosene130g/t, the technical indexes were obtained:the Mo concentrate assays48.83%, Cu0.83%, recovery of Mo90.55%; the copper concentrate assays27.08%, recovery of Cu99.96%.
For copper-molybdenum mine in Duobaoshan mine in kibbled case, molybdenum, copper and other floating appropriate period of grinding fineness-0.076mm (-200mesh) accounted for about68%; the dosage of CSU-30030～40g/t;2#oil frother14g/t; lime dosage1.5kg/t; considering the influence on the flotation process mixed by mid-core, the matching relationship is CSU-300:35g/t,2oil:14g/t. The ore is floated by the bulk flotation, then concentrates copper by strengthening flotation, the indexes of Cu-Mo mixed concentrate copper grade28.77%molybdenum0.80%and recovery of the Mo90.71%are achieved as well as Cu concentrate contains15.88%Cu, the recovery of Cu9.77%under the condition of rougher grinding fineness-0.0454mm96%, the mixture collector of butyl xanthate butylamine and black drug (3:1). When copper concentrate was mixed, copper grade is26.36%, the recovery86.76%.In order to realize the separation of the Cu-Mo of Duobaoshan copper mine, the Cu-Mo mix concentrate should be re-ground and the reasonable fineness is45μm-98%. In a dosage of Na2S is1000g/t and (NaPO3)6250g/t (50×5).The Mo concentrate containing48.63%Mo,0.73%Cu, the recovery of Mo87.40%as well as C-Mo middling with18.6%C,3.31%Mo,1.30%Cu. Compared with ore, the yield of this middling is less (0.036%). The industrial test results of Duobaoshan Cu-Mo ore indicate that the Cu concentrate can be achieved with the index of Cu grade28.26%, Mo0.13%, Au8.38g/t, Ag102.52g/t and the Mo concentrate contain Cu0.78%, Mo48.55%, Ag recovery63.58%, Cu92.60%, Au78.31%and comprehensive recovery of Mo up to70.65%by under the program flowsheet and the recommended reagent system. At the same time, the C-Mo middling with C19.25%, Mo5.19%, Cu1.93%was obtained. The results of semi-industrial test with the scale of10t/d indicate that the Cu concentrate and the Mo concentrate can be achieved with the index of Cu grade24.33%, Mo0.19%, Au8.91g/t, Ag150.56g/t, Cu recovery72.79%, Au65.55%, Ag60.11%and Mo grade47.14%, Cu0.88%, Mo recovery71.52%, Mo enrichment ratio4000respectively under the program flowsheet and the recommended reagent system. At the same time, the C-Mo middling with C18.76%, Mo4.93%, Cu2.98%was obtained.
引文
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