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Flotation of copper oxide minerals:A review 被引量:7
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作者 Qicheng Feng Wenhang Yang +3 位作者 Shuming Wen Han Wang Wenjuan Zhao Guang Han 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2022年第6期1351-1364,共14页
Copper oxide minerals are important copper resources,which include malachite,azurite,chrysocolla,cuprite,etc.Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processi... Copper oxide minerals are important copper resources,which include malachite,azurite,chrysocolla,cuprite,etc.Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry.In this paper,the surface properties of copper oxide minerals and their effects on the mineral flotation behavior are systematically summarized.The flotation methods of copper oxide minerals and the interaction mechanism with reagents are reviewed in detail.Flotation methods include direct flotation(using chelating reagents or a fatty acid as collector),sulfidization flotation(using xanthate as collector),and activation flotation(using chelating reagents,ammonium/amine salts,metal ions,and oxidant for activation).An effective way to realize efficient flotation of copper oxide minerals is to increase active sites on the surface of copper oxide minerals to enhance the interaction of collector with the mineral surface.Besides,various perspectives for further investigation on the efficient recovery of copper oxide minerals are proposed. 展开更多
关键词 copper oxide minerals Direct flotation Sulfidization flotation Activation flotation
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Mechanism and application on sulphidizing flotation of copper oxide with combined collectors 被引量:23
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作者 Wan-zhong YIN Qian-yu SUN +3 位作者 Dong LI Yuan TANG Ya-feng FU Jin YAO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2019年第1期178-185,共8页
The effect of sodium butyl xanthate (NaBX) and dodecylamine (DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe, zeta potential, and i... The effect of sodium butyl xanthate (NaBX) and dodecylamine (DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe, zeta potential, and infrared spectroscopy analyses. The micro-flotation results show that combined use of NaBX+DDA yields better effect than using NaBX at pH 7-11 only, and the optimal molar ratio of NaBX to DDA is 2: 1. The actual ores flotation shows that when the dosage of NaBX+DDA is (100+54) g/t, the copper concentrate grade and recovery are 15.93% and 76.73%, respectively. The fluorescent pyrene probe test demonstrates that the NaBX+DDA can reduce the micelle concentration in the pulp. The zeta potential and the infrared spectroscopy analyses indicate that chemical adsorption, hydrogen-bonding and electrostatic interaction can help to adsorb NaBX+DDA on the surface of malachite. Meantime, copper xanthate and copper-amine complexes may be generated during the adsorption process. 展开更多
关键词 copper oxide combined collector flotation ADSORPTION infrared spectroscopy
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Mechanochemical sulfidization of a mixed oxide-sulphide copper ore by co-grinding with sulfur and its effect on the flotation efficiency 被引量:7
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作者 Mojtaba Masdarian Asghar Azizi Zahra Bahri 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第3期743-748,共6页
Mechanochemical sulfidization of a mixed sulfide/oxide copper ore by co-grinding with sulfur and additives including Mg(NO3)2 and Fe(NO3)3 salts and iron,aluminum and magnesium powders was investigated for the first t... Mechanochemical sulfidization of a mixed sulfide/oxide copper ore by co-grinding with sulfur and additives including Mg(NO3)2 and Fe(NO3)3 salts and iron,aluminum and magnesium powders was investigated for the first time.Also,the influence of sulfidization during the wet-milling process was examined on the separation efficiency and recovery of copper in detail.The results demonstrated that co-grinding with sulfur solely had the best flotation performance at the value of 0.5 wt.%and it was attributed to the possible existence of S\\O bonding on copper oxides surfaces.In addition,adding magnesium nitrate salt,magnesium powder,iron nitrate salt and aluminum powder as additive associated with 0.5 wt%sulfur into ball milling caused the flotation improvement at the amounts of 0.2 wt%,0.2 wt%,0.5 wt%and 0.5 wt%,respectively.Also,the effect of grinding time and sulfidization pH with 0.5 wt%sulfur solely was determined and pH s of 7.5 to 8.5 gave the best results.The highest recovery(75.76%)and separation efficiency(63.44%)were achieved at pH of 7.5 and 8.5,respectively. 展开更多
关键词 Sulphide/oxide copper ore FLOATABILITY Mechanochemical sulfidization Reductive additives Recovery
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Interaction effects of flotation reagents for SAG mill reject of copper sulphide ore using response surface methodology 被引量:6
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作者 Ali AHMADI Mojtaba REZAEI Seyed Mohammad SADEGHIEH 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第3期792-806,共15页
Flotation reagents have a complex behaviour in the beneficiation of base minerals in clayey ores.Interaction effects of reagents on the efficiency of copper flotation for a highly clayey low-grade sulphide ore were in... Flotation reagents have a complex behaviour in the beneficiation of base minerals in clayey ores.Interaction effects of reagents on the efficiency of copper flotation for a highly clayey low-grade sulphide ore were investigated using a central composite design.Preliminary results showed that sodium-isopropyl-xanthate(SIPX)and O-isopropyl-N-ethyl-thionocarbamate(IPETC)were found to be the most efficient collectors in the presence of lime as the pH regulator.The effects of dosage of collectors(SIPX and IPETC)and the dosage of methyl-isobutyl-carbonyl(MIBC)as frother on the separation efficiency were evaluated at different pH levels.Based on the analysis of variance(ANOVA),the interaction effects of the collector−pH and collector−frother were significant for the separation efficiency.At the low level of collector dosage,increasing pH from 9 to 11 enhanced copper separation efficiency from 81%to 86%for IPETC and from 77%to 86%for SIPX.Results of ANOVA showed that the maximum copper separation efficiency(88.7%)was obtained at the dosages of 8.6 g/t SIPX,7 g/t IPETC and 20 g/t MIBC at pH 11.Finally,it was concluded that a mixture of SIPX and IPETC collectors was more suitable to treat highly clayey sulphide ores. 展开更多
关键词 flotation copper sulphide REAGENT interaction effect reject ore
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Optimization of reagent dosages for copper flotation using statistical technique 被引量:5
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作者 Y.VAZIFEH E.JORJANI A.BAGHERIAN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第12期2371-2378,共8页
The effects of Z11 and AP407 collectors as well as AF65 and AF70 frothers were evaluated in the rougher flotation circuit of the Sungun copper concentrator plant using 2 4 full factorial design.Response functions were... The effects of Z11 and AP407 collectors as well as AF65 and AF70 frothers were evaluated in the rougher flotation circuit of the Sungun copper concentrator plant using 2 4 full factorial design.Response functions were produced for both Cu grade and recovery and optimized within the experimental range.The optimum reagent dosages were found to be 12.01 g/t Z11,11 g/t AP407,3 g/t AF65 and 5 g/t AF70 to attain the maximum Cu grade(8.17%).The reagent dosages of 12 g/t Z11,11 g/t AP407,3 g/t AF65 and 15 g/t AF70 produced the maximum Cu recovery(86.44%).The collector distribution demonstrated that the distribution pattern of(32%,32%,20%,16%)can produce the best recovery(87.75%)in comparison to other examined distribution patterns. 展开更多
关键词 copper sulphide ores flotation reagents modelling OPTIMIZATION
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SYNERGISTIC ACTIVATION OF CHELATING AGENT ON XANTHATE DURING THE FLOTATION OF REFRACTORY COPPER OXIDIZED ORES
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作者 徐晓军 刘邦瑞 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1994年第1期89-97,共9页
For realizing the effective flotation of refractory copper ox-idized ores and developing the activation-flotation theory , the influences of nine different organic chelating agents on xanthate collection pcnver and it... For realizing the effective flotation of refractory copper ox-idized ores and developing the activation-flotation theory , the influences of nine different organic chelating agents on xanthate collection pcnver and its adsorption characteristics ivere studied in the flotation of malachite and chrysocolla representatively selected by means of XPS,IR, absorbed quanti-ty measurements and flotation tests.For easily-dissolved malachite flotation , a small amount of chelating agent can obviously enhance xanthate collecting power and make malachite floated easily , and so reduces the consumption of xanthate. For hard-dis-晄olved chrysocolla, chelating agent is able to increase its recovery to 90% , but the chelating agent consumption is high. Chelating agent and xanthate can produce synergistic adsorptions, which follmv Freundlich's adsorption equation on malachite and Chrysocolla surfaces. The high chemical activity of chelating agent and its synergistic activation on xanthate are the key to improving xanthate collection poiver. The synergistic activation of chelat-ing agent on xanthate on melachite surfaces is clearly stronger than on chrysocolla surfaces. According to experimental results, it can be thought that the synergistic activation results from the synergistic complexation of chelating agent and xanthate with copper ions to form biligand-tribasic co-ordination complex. 展开更多
关键词 organic chelating agent copper oxidized ores activa-tion flotation MALACHITE CHRYSOCOLLA
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Effect of Desliming on Flotation Response of Kansanshi Mixed Copper Ore
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作者 Tina Phiri Cornwell Tepa Ricky Nyati 《Journal of Minerals and Materials Characterization and Engineering》 2019年第4期193-212,共20页
The Kansanshi mixed copper sulfide-oxide ore contains significant proportions of fine material manifesting in a variety of processing challenges. This paper presents the work which was carried out to evaluate the effi... The Kansanshi mixed copper sulfide-oxide ore contains significant proportions of fine material manifesting in a variety of processing challenges. This paper presents the work which was carried out to evaluate the efficacy of desliming in improving the flotation response of the ore. Two modes of desliming were investigated, namely;sieving and elutriation after which the deslimed material was subjected to Kansanshi standard laboratory flotation conditions. The minimum copper feed grade for the mixed copper ore was 0.5% Total Copper (TCu). The outcome of this work has shown that desliming improves the flotation response of the Kansanshi mixed copper ore. At a rougher copper concentrate grade of 8%, copper metal recoveries obtained with desliming were in excess of 70% compared to 58% achieved with baseline tests without desliming. It was further observed that desliming resulted in improved flotation rates for the sulfide minerals. For a flotation time of 3 minutes, recoveries of 69% and 74% were obtained with elutriation and sieving respectively compared to 58% recovery for baseline tests. From the same results it was also evident that, of the two modes of desliming investigated, sieving yielded better performance than elutriation. 展开更多
关键词 Kansanshi SULFIDE oxide copper ORE flotation BASELINE DESLIMING
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Sulphidization flotation for recovery of lead and zinc from oxide-sulfide ores 被引量:12
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作者 FA Keqing Jan D.Miller +1 位作者 姜涛 李光辉 《中国有色金属学会会刊:英文版》 EI CSCD 2005年第5期1138-1144,共7页
A new flowsheet was developed to recover the valuable minerals from oxide or oxide-sulfide ores of lead and zinc. The flowsheet consisted of flotation of sulfide minerals, desliming and sulphidization-flotation of oxi... A new flowsheet was developed to recover the valuable minerals from oxide or oxide-sulfide ores of lead and zinc. The flowsheet consisted of flotation of sulfide minerals, desliming and sulphidization-flotation of oxide minerals. The corresponding reagent system and techniques to the flowsheet were investigated. Batch and continuous tests show that the dosage of sodium sulfide, temperature, and collector type are main affecting factors on the recovery of smithsonite and cerussite. For the flotation of cerussite, there is an appropriate dosage of sodium sulfide at which the recovery reaches its maximum value. The required sodium sulfide for smithsonite flotation is higher than that for cerussite and the recovery of smithsonite flotation increases with the dosage of sodium sulfide at low level and becomes insensitive at high dosage. The appropriate temperature for smithsonite and cerussite flotation is found to be 2540℃. Amines are found to be the effective collectors for the flotation of smithsonite after sulphidization. Investigation also shows that desliming prior to sulphidization-flotation is essential to the effective recovery of smithsonite and cerussite, and the desliming process of two-stage hydrocyclon is well feasible and effective for the treatment of lead-zinc oxide ores. A further treatment on the cerussite flotation concentrate by shaking table is proposed to obtain higher lead grade. 展开更多
关键词 氧化物 硫化物 矿石 浮选工艺
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QUANTUM CHEMICAL MECHANISM ON THE SURFACE OXIDATION AND FLOTATION OF SULPHIDE MINERALS 被引量:1
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作者 Wang Dianzuo Long Xiangyun Sun Shuiyu 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 1991年第1期20-27,共8页
The surfaces of galena and pyrite,the adsorption of oxygen,and the reactions of ethyl xanthate on the sulfides were studied using quantum chemical calculations.In addition,the surface electron structures of the minera... The surfaces of galena and pyrite,the adsorption of oxygen,and the reactions of ethyl xanthate on the sulfides were studied using quantum chemical calculations.In addition,the surface electron structures of the minerals were discussed.According to the results,the mechanisms of ionic exchange reaction and dixanthogen adsorption for the xanthate notation of galena and pyrite were explained.The important role of oxygen in collector and collectorless flotation processes was also investigated. 展开更多
关键词 sulphide minerals OXIDATION flotation GALENA PYRITE quantum chemistry
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Techniques of copper recovery from Mexican copper oxide ore 被引量:10
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作者 CAO Zhan-fang ZHONG Hong LIU Guang-yi ZHAO Shu-juan 《Mining Science and Technology》 EI CAS 2009年第1期45-48,共4页
Mexican copper ore is a mixed ore containing mainly copper oxide and some copper sulfide that responds well to flotation. The joint techniques of flotation and leaching were studied. The results indicate that an ore c... Mexican copper ore is a mixed ore containing mainly copper oxide and some copper sulfide that responds well to flotation. The joint techniques of flotation and leaching were studied. The results indicate that an ore containing 19.01% copper could be obtained at a recovery ratio of 35.02% by using sodium sulfide and butyl xanthate flotation. Over 83.33% of the copper oxide can be recovered from the railings by leaching in suitable conditions, such as 1 h stirring at a temperature around 25 ℃with a mixing speed of S00 r/min, an H2SO4 concentration of 1.0 mol/L and a mass ratio of the ore-slurry-liquid to solid (mL/ms) of 3. The overall yield of refined ore after flotation and leaching is over 89.18% of the copper, which is much better than sole flotation or leaching. A copper product containing more than 99.9% copper was obtained by using the process: flotation-agitation leaching- solvent extraction-electro-winning. 展开更多
关键词 copper oxide ore flotation stirring leaching EXTRACTION
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Bioleaching of a kind of alkaline mixed copper oxide and sulphide mineral 被引量:2
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作者 黄明清 吴爱祥 《Journal of Chongqing University》 CAS 2010年第4期177-184,共8页
We conducted two-stage acidification-bioleaching experiments to probe the feasibility of bioleaching for a kind of mixed alkaline copper oxide and sulphide mineral. We used the uniform design method for data analysis ... We conducted two-stage acidification-bioleaching experiments to probe the feasibility of bioleaching for a kind of mixed alkaline copper oxide and sulphide mineral. We used the uniform design method for data analysis and experimental optimization, with initial pH value, pulp density, inoculation of bacteria and ferrous iron concentration selected as the influential factors. Polynomial regression shows that the four factors sequentially influence the copper recovery by 14.430%, 8.555%, 1.982% and 3.895%. Acid equilibrium in the bioleaching system is mainly influenced by alkaline gangue content, chemical reactions and bacterial activity. A maximal portion of refractory copper extracted reaches 71.08%. The dynamic analysis of copper recovery indicates that bioleaching goes through a lag leaching phase, prime leaching phase and leaching stationary phase corresponding to the growth phases of bacteria. Compared with the predicted value of 80.87%, the confirmatory experiment observes a 78.21% copper recovery under the optimal conditions of pH of 1.5, pulp density of 5%, bacteria inoculation of 30% and initial ferrous iron concentration of 9 g L-1. Results suggest that bioleaching is technically feasible to improving total copper recovery. 展开更多
关键词 alkaline mixed copper oxide and sulphide mineral BIOLEACHING uniform design copper recovery acid equilibrium
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2023年浮选药剂研究进展 被引量:2
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作者 朱一民 《有色金属(选矿部分)》 CAS 2024年第3期1-22,共22页
本文收集了2023年国内核心期刊发表的部分浮选药剂的信息,分硫化矿捕收剂、氧化矿捕收剂、调整剂、起泡剂与助磨剂及助滤剂、浮选药剂的结构与性能和废水处理六个方面介绍并略加评论。
关键词 浮选药剂 硫化矿 氧化矿 捕收剂 调整剂 起泡剂与助磨剂及助滤剂 浮选药剂的结构与性能 废水处理
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铜熔炼渣的火法回收工艺与铅锌锑富集规律
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作者 钱鹏 王宏阳 《有色设备》 2024年第5期76-83,共8页
铜精矿火法冶金后产生的熔炼渣经浮选回收铜后,尾渣含Pb、Zn和Sb,仍具有一定回收经济价值。浮选法对铜熔炼渣中Pb、Zn和Sb的回收率低,而火法熔炼通过高温和碳热还原可以有效分离这些元素。对直接还原熔炼、造锍还原熔炼和氧化-还原熔炼... 铜精矿火法冶金后产生的熔炼渣经浮选回收铜后,尾渣含Pb、Zn和Sb,仍具有一定回收经济价值。浮选法对铜熔炼渣中Pb、Zn和Sb的回收率低,而火法熔炼通过高温和碳热还原可以有效分离这些元素。对直接还原熔炼、造锍还原熔炼和氧化-还原熔炼3种典型的火法回收工艺进行了对比中试试验。结果表明:火法回收工艺可达到理想的铜回收率,但不同工艺对Pb、Zn和Sb的回收效果不同;直接还原熔炼提高了Pb的回收率;造锍还原熔炼提高了Zn的回收率;熔炼法需消耗大量还原剂和能源,经济性需慎重考虑。火法熔炼适合作为铜回收的备用工艺进行研究。 展开更多
关键词 铜熔炼渣 铅锌回收 火法熔炼 浮选 直接还原熔炼 造锍还原熔炼 氧化-还原熔炼
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硫化铜矿快速-分支浮选新工艺探索
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作者 解子花 魏志聪 +3 位作者 李梦宇 刘洋 环艳 瞿俊男 《矿冶》 CAS 2024年第3期399-408,共10页
以云南思茅大平掌铜矿为研究对象,针对铜硫浮选分离工艺中存在药耗大、能耗高和浮选指标不理想等问题,采用分支浮选的方法浮选该铜矿。在对该矿工艺矿物学分析的基础上,对比研究了单支浮选和分支浮选工艺的浮选效果,并重点研究了快速-... 以云南思茅大平掌铜矿为研究对象,针对铜硫浮选分离工艺中存在药耗大、能耗高和浮选指标不理想等问题,采用分支浮选的方法浮选该铜矿。在对该矿工艺矿物学分析的基础上,对比研究了单支浮选和分支浮选工艺的浮选效果,并重点研究了快速-分支浮选联合工艺处理该矿的浮选效果。结果表明,目的矿物黄铜矿嵌布粒度较粗且与黄铁矿致密共生、连生。磨矿细度为-0.074 mm含量占比为70%时,大部分黄铜矿物得以单体解离,满足铜矿石选别工艺要求。分支浮选流程可有效提高精矿品位,技术优势明显,其中“快速-分支”联合浮选新工艺的技术指标最优,实现了大平掌硫化铜矿的高效回收和“增质降耗”。与常规单支浮选工艺指标相比,“快速-分支”浮选新工艺在保证铜回收率稳定的情况下可显著降低复合黄药和起泡剂DEP的用量,二者用量分别减少12%和31%左右,此时铜品位却有1.45个百分点的提升。在贵金属综合回收方面,新工艺对金银的回收同样存在明显的提升效果,金和银品位分别提高0.18和9.40个百分点,回收率分别提高3.01和13.97个百分点。 展开更多
关键词 硫化铜矿 铜硫分离 单支浮选 分支浮选 快速浮选 快速-分支浮选
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铜矿浮选捕收剂研究进展与展望
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作者 王璐瑶 刘胜 +1 位作者 刘广义 朱远斌 《铜业工程》 CAS 2024年第3期69-84,共16页
浮选是铜矿分离回收最经济、最主要的富集方法。捕收剂可选择性调控铜矿物表面疏水性,增加铜矿物与脉石矿物间的疏水性差异,是铜矿浮选分离技术的核心要素。论文综述了硫化铜、氧化铜、氧化-硫化铜矿浮选捕收剂的研究进展,主要涉及黄药... 浮选是铜矿分离回收最经济、最主要的富集方法。捕收剂可选择性调控铜矿物表面疏水性,增加铜矿物与脉石矿物间的疏水性差异,是铜矿浮选分离技术的核心要素。论文综述了硫化铜、氧化铜、氧化-硫化铜矿浮选捕收剂的研究进展,主要涉及黄药与黄原酸酯、黑药及其衍生物、硫氮与硫氮酯、硫氨酯和硫脲及其组合浮选硫化铜的最新研究成果;唑/嗪硫酮类等螯合剂浮选硫化铜的性能与机理;羟肟酸类、唑/嗪硫酮类等螯合捕收剂浮选氧化铜矿的性能与机理;巯基-肟基双配体螯合捕收剂和唑/嗪硫酮类等螯合剂同时疏水浮选氧化和硫化铜矿物的机制。最后,展望了铜矿浮选捕收剂的未来发展方向与应用前景。 展开更多
关键词 氧化铜矿 硫化铜矿 浮选 捕收剂 疏水机理
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氧化对铜硫矿物浮选影响的研究现状
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作者 薛季玮 刘启鸿 +5 位作者 刘童 田宇 卜显忠 宛鹤 任大伟 李唐博 《金属矿山》 CAS 北大核心 2024年第2期48-55,共8页
大多数铜硫矿物表面易氧化,而氧化会对矿物浮选行为及药剂在矿物表面的吸附产生重要影响。目前,关于氧化对铜硫矿物浮选的影响,研究者开展了大量相关研究并取得了显著成果。从铜硫矿物表面氧化影响因素出发,重点分析了溶液性质、矿物晶... 大多数铜硫矿物表面易氧化,而氧化会对矿物浮选行为及药剂在矿物表面的吸附产生重要影响。目前,关于氧化对铜硫矿物浮选的影响,研究者开展了大量相关研究并取得了显著成果。从铜硫矿物表面氧化影响因素出发,重点分析了溶液性质、矿物晶格缺陷等因素对铜硫矿物表面氧化的影响机理。针对氧化后铜硫矿物浮选回收难度增加的原因进行了分析,一方面,氧化后铜硫矿物表面溶解产生的金属离子增加,会使铜硫矿物表面相互影响严重,造成铜硫矿物难以浮选分离;另一方面,铜硫矿物表面氧化产生的强亲水性的金属氧化物及氢氧化物则会严重减弱捕收剂的有效吸附,使铜硫矿物可浮性降低。基于此,从铜硫矿物表面氧化层脱落方法和氧化后铜硫矿物表面调控方法两方面论述了氧化后铜硫矿物浮选强化措施及其机理。最后,针对氧化后铜硫矿物浮选强化措施提出了相关建议,以期为实现氧化后铜硫矿物高效浮选回收提供借鉴。 展开更多
关键词 铜硫矿物 浮选 氧化机理 药剂吸附 强化措施
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中亚某难选含铜金矿选冶试验研究
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作者 杨松涛 林海彬 +4 位作者 王乾坤 谢洪珍 张耀铭 王中溪 徐其红 《有色金属(选矿部分)》 CAS 2024年第2期15-21,共7页
采用“浮选—浮选精矿销售—浮选尾矿直接炭浆法氰化浸出”工艺综合回收中亚某矿山过渡带难选含铜金矿中的金和铜。矿石含金3.52g/t、银11.20g/t、铜0.54%、砷0.40%、硫1.54%,其中氧化铜含量为0.22%,占总铜含量的40.74%,金、铜嵌布粒度... 采用“浮选—浮选精矿销售—浮选尾矿直接炭浆法氰化浸出”工艺综合回收中亚某矿山过渡带难选含铜金矿中的金和铜。矿石含金3.52g/t、银11.20g/t、铜0.54%、砷0.40%、硫1.54%,其中氧化铜含量为0.22%,占总铜含量的40.74%,金、铜嵌布粒度微细,嵌布关系复杂,属于复杂难选含氧化铜金矿。针对矿石特点,通过引进氧化铜矿石的捕收药剂体系,增加精选级数,按照便于现场技改的硫化铜、氧化铜混合浮选工艺进行金铜浮选回收,对铜浮选尾矿进行直接炭浆法氰化浸出回收金,最终可获得产率3.92%,含金48.50g/t、含铜8.45%的浮选精矿,可直接销售;浮选尾矿含铜0.21%,可氰化铜含量为0.12%,将其直接炭浸消耗氰化钠3.1kg/t,金浸出率达到74.71%;浮选+浸出金综合回收率为88.26%,铜回收率为62.16%。与现场“浮选—浮选精矿销售—浮选尾矿氨氰法抑铜浸金—氨氰尾浆炭浸”工艺相比,浮选精矿产率接近,精矿金铜品位更优,金综合回收率提高了6.02个百分点,铜回收率提高了9.24个百分点。研究结果可作为现场技改依据。 展开更多
关键词 含氧化铜金矿 铜混合浮选 氧化铜捕收剂 可氰化铜
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刚果(金)SCM矿区低品位高氧化率铜钴矿浮磁联合选冶试验研究 被引量:1
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作者 刘杰 周宽达 +4 位作者 王洪杰 陈兴海 蒙文飞 兰福荫 陆智国 《中国矿业》 北大核心 2024年第2期228-235,共8页
刚果(金)SCM矿区低品位铜钴矿样中,铜以自由氧化铜、结合氧化铜为主,并含少量次生硫化铜,原生硫化铜甚微;钴主要以水钴矿、菱钴矿、钴白云石等氧化钴的形式存在,铜矿物、钴矿物赋存状态复杂,回收难度大。根据矿石性质和实际生产需求,试... 刚果(金)SCM矿区低品位铜钴矿样中,铜以自由氧化铜、结合氧化铜为主,并含少量次生硫化铜,原生硫化铜甚微;钴主要以水钴矿、菱钴矿、钴白云石等氧化钴的形式存在,铜矿物、钴矿物赋存状态复杂,回收难度大。根据矿石性质和实际生产需求,试验采用“预先浮选硫化矿-硫化浮选氧化矿-磁选-浸出”的原则流程,考察了硫化剂种类、铜钴矿浮选作业药剂制度和磁场强度等因素对铜钴分选指标的影响,考察了常规浸出条件下铜钴的浸出效果。研究结果表明:采用Na_(2)S作为氧化铜钴的硫化剂、丁基黄药为捕收剂、硫化时间4 min时,可实现自然矿浆环境中氧化铜钴的选择性分选;以磁场强度1.1 T、磁场流速1.0 cm/s、磁脉动频率16 Hz为磁选条件,磁选氧化铜钴矿硫化浮选的尾矿,可获得良好的铜钴矿磁选效果。针对含铜1.68%、含钴0.165%、氧化率94.05%的原矿,铜钴矿分选作业采用四段氧化铜浮选、三段氧化钴浮选和两段磁选的开路试验,获得了产率20.99%、铜品位6.67%、铜回收率79.91%、钴品位0.396%、钴回收率51.70%的氧化铜钴粗精矿。对开路试验获得氧化铜钴粗精矿进行硫酸浸出,用98%硫酸调节浸出矿浆酸度,在液固比5∶1、浸出时间4 h、搅拌速度200 r/min、浸出终点pH值约1.5的条件下,铜的浸出率为97.96%,钴的浸出率为91.08%,吨铜净酸为0.96 t酸/t铜。本文的研究结果可为同类型矿石的选冶处理提供一定的技术参考。 展开更多
关键词 高氧化率 铜钴矿 硫化浮选 磁选 浸出 刚果(金)
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国外某复杂氧化铜矿硫化浮选生产调试
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作者 何树华 巫銮东 《有色金属(选矿部分)》 CAS 2024年第6期99-105,154,共8页
详细阐述了国外某复杂氧化铜矿硫化浮选现场生产调试过程中遇到的问题、解决这些问题的主要思路和过程。在现场调试初期,主要的问题包括铜浮选回收率和铜精矿品位双双低下、浮选泡沫矿化不好或矿化较好又容易出现严重的消泡现象,以及微... 详细阐述了国外某复杂氧化铜矿硫化浮选现场生产调试过程中遇到的问题、解决这些问题的主要思路和过程。在现场调试初期,主要的问题包括铜浮选回收率和铜精矿品位双双低下、浮选泡沫矿化不好或矿化较好又容易出现严重的消泡现象,以及微细粒级针铁矿对铜精矿品位的影响等。在详细分析试验数据以及现场生产调试数据的基础上,形成了氧化铜矿现场生产调试的基本指导原则:1)硫氢化钠的总用量以文中式(1)为计算基准,并视现场情况适当增减,变动范围在文中式(2)所界定的C值内;2)保持捕收剂丁基黄药的总用量在较高水平;3)硫氢化钠总用量的适当增减或式(2)中常数C取值主要依据是粗选一三个槽的泡沫矿化情况,即硫氢化钠在粗选一的添加量应能使粗选一泡沫矿化比较明显并且泡沫颜色从不明显带泥变成带些黄褐色,也即硫氢化钠在粗选一的添加量应能使得部分微细粒针铁矿能被硫化活化而后接受捕收剂吸附、从而因疏水而非因微细粒的水相均匀分布带入精矿矿浆而进入泡沫层。利用这一特性,通过提高捕收剂丁基黄药用量以提高铜回收率的同时可以有效避免浮选槽消泡现象。以上以硫氢化钠用量模型和捕收剂用量模型为核心的指导原则是该氧化铜矿硫化浮选现场生产调试成功的关键。 展开更多
关键词 氧化铜矿 硫化 浮选 生产调试
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氧化铜矿浮选方法及药剂的研究现状及展望 被引量:1
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作者 蔺月萌 韩百岁 +3 位作者 姜丽帅 李潇煜 徐文涛 谢昊宇 《矿产综合利用》 CAS 2024年第3期112-120,共9页
这是一篇矿物加工工程领域的论文。铜是一种重要的有色金属资源,随着易选硫化铜矿的日益减少,开发利用氧化铜矿是矿业领域内研究的重要内容。浮选法是处理氧化铜矿的主要方法。本文概述了近几年来关于氧化铜矿浮选的相关研究进展,详述... 这是一篇矿物加工工程领域的论文。铜是一种重要的有色金属资源,随着易选硫化铜矿的日益减少,开发利用氧化铜矿是矿业领域内研究的重要内容。浮选法是处理氧化铜矿的主要方法。本文概述了近几年来关于氧化铜矿浮选的相关研究进展,详述了直接浮选法和硫化浮选法以及其他浮选方法的发展现状,并对浮选药剂进行了分析,探讨了氧化铜矿浮选今后的发展方向,旨在为高效选别氧化铜矿提供重要的理论依据。 展开更多
关键词 矿物加工工程 氧化铜矿 浮选方法 研究进展 浮选药剂 发展方向
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