阜康镍冶炼厂含镍铜渣冶炼工艺研究

采用焙烧—浸出—电积工艺处理阜康镍冶炼厂含镍铜渣。在焙烧温度 80 0～90 0℃、浸出温度 6 5～ 70℃、浸出时间 12 0min的条件下 ,可得到铜浸出率为 97%。由于浸出液含铁极低、含镍低于 1g/L ,不需净化可直接电积。工业生产中可抽取一定量的铜电积老液送镍冶炼系统 ,防止铁、镍累积。含镍铜渣中的贵金属全部进入浸出渣 ,浸出渣率很低有利于贵金属富集。该工艺流程结构简单 ,金属回收率高 ,含镍铜渣中有价金属可综合回收 ,无环境污染     

含铜,镍,钴渣的综合利用

介绍了对转炉渣、钴渣、铜渣、富氧熔炼铜渣、含铜硫酸渣中钴、铜、镍的回收实例，并对回收后废渣的利用提出了建议     

还原硫化法从镍转炉渣中富集钴镍铜

考察了转炉渣还原硫化生产钴冰铜过程中还原剂焦炭与转炉渣质量比、硫化剂黄铁矿与转炉渣的质量比、熔炼温度及保温时间对钴镍铜的回收率的影响。试验结果表明，还原剂焦炭用量对金属钴镍收率影响最大，用量过大或过少都不利于钴镍的回收，而对铜的回收率影响不明显；增大硫化剂黄铁矿用量及提高贫化温度、延长保温时间都有利于钴镍铜的回收。当还原剂、硫化剂与炉渣的质量百分比分别为3．5％、25％，熔炼温度为1360℃，保温时间为3h时，钴镍铜在钴冰铜中的回收率分别达到了91．50％、96．08％、92．89％。     

分子轨道对二硫代和一硫代氨基甲酸盐、碳酸盐、磷酸盐以及羧酸盐的铜镍络合物的基础研究

泡沫浮选用于分离混合物以及为了资源再利用而回收和分离溶液中某些微量组分。作为泡沫浮选的实际应用,对废水中存在的铜、镍与捕收剂的络合物用扩展的休克尔方法对其电子合成键状态进行了计算。当络合物形成时,不仅象二硫代氨基甲酸盐、二硫代碳酸盐、二硫代磷酸盐那样捕收剂的硫原子的电子转移给金属原子,而且捕收剂给出电子的能力也由于烷基的取代而增加。氨基二硫代甲酸镍以共振形式对于其稳定性的影响取决于各个共振形式的总能量。镍和铜对捕收剂中硫的亲和力比氧强,所以捕收剂对这些金属的捕收能力有下列顺序:二硫代捕收剂>一硫代捕收剂>羧酸盐捕收剂。     

矿浆电解法处理铜镍高冰镍

介绍了一种钢镍高冰镍湿法处理新方法。采用矿浆电解技术直接浸出电解高冰镍矿浆，产出海绵铜和硫酸镍溶液，贵金属保留在浸出终渣中，使有价金属得到有效分离和提取。该方法具有流程简单、金属回收率高、成本低等优点。     

从废电子零件中浮选回收镍颗粒

近来，一些稀贵金属常用于电子零件制造和各个工业领域。例如，用镍的电子零件比用银和钯的电子零件增多。反过来，电子制造公司废料和市政周体垃圾中的电子废料含有的镍量大幅度增加。所以。从资源和再生考虑，回收它们是很重要的。但是，从电子废料中回收镍是比较困难的。本文研究了矿浆pH、硫化过程和粉碎时间对从电子零件中浮选回收镍的影响。此外，还测定了镍板的接触角和Zeta电位。从试验结果可知，在低pH下。硫化可有效地提高精矿镍回收率。在pH2．0时。先经硫化，再用戊基黄原酸钾作捕收剂。用MIBC作起泡剂，从电子废料中获得的精矿镍品位为33．2％，回收率为85．3％。根据试验结果还推荐了从电子废料中回收镍的工艺流程。这样可抛弃产率60％以上的尾矿。     

湿法炼锌渣柠檬酸浸出回收钴、锌和镍

研究了用柠檬酸从湿法炼锌净化渣中回收有价金属的工艺方法。采用单因素浸出试验,探讨了净化渣中有价金属浸出的行为规律。分别考察了柠檬酸浓度、浸出温度、液固比、搅拌速度、pH值和浸出时间对有价金属浸出率的影响。结果表明:在柠檬酸浓度0.8 mol/L、浸出温度60℃、液固比10:1、搅拌速度200 r/min、pH 1.0、浸出时间90 min条件下,锌、镍、铜的浸出率分别为79.60%、75.09%、9.70%,钴的浸出率高达97.64%。本研究为湿法炼锌净化渣的综合回收利用提供了一种新的途径。      

高镍粗铜精炼综合回收镍的途径

本文通过热力学分析，得出高镍粗钢火法精炼过程中“调铜保镍”的技术措施，可使阳极中金属态保留的镍达1．58％，结合生产实践分析总结了高镍粗铜阳极电解过程中独特的技术工艺条件的选择与控制，为在电解液净化中有效地综合回收镍创造了条件。     

锰结核浸出—矿浆离子浮选工艺的研究：—捕收剂的再生

对捕收剂的硫化法和碱法再生进行了研究，对用ＴＣ作捕收剂的镍钴离子浮选和铜镍钴载体矿浆离子浮选，采用碱法再生ＴＣ，ＴＣ再生率约为５５％，对用ＴＣ作捕收剂的铜矿浆离子浮选，采用硫化法再生ＴＣ，ＴＣ再生率约８５％，再生捕收剂浮选效果好，用稀硫酸溶解再生ＴＣ的镍钴渣及铜镍钴渣可基本实现镍与钴及镍与铜钴的分离。     

锰结核浸出－矿浆离子浮选工艺的研究──捕收剂的再生

对捕收剂的硫化法和碱法再生进行了研究。对用ＴＣ作捕收剂的镍钴离子浮选和铜镍钴载体矿浆离子浮选，采用碱法再生ＴＣ，ＴＣ再生率约为５５％。对用ＴＣ作捕收剂的铜矿浆离子浮选，采用硫化法再生ＴＣ，ＴＣ再生率约８５％。再生捕收剂浮选效果好。用稀硫酸溶解再生ＴＣ的镍钴渣及铜镍钴渣可基本实现镍与钴及镍与铜钴的分离。     

某富含蛇纹石的低品位难选铜镍矿选矿工艺研究

针对某铜镍矿铜镍品位低,铜镍矿物嵌布粒度微细,共生关系复杂,蛇纹石含量高等特征,开展了选矿工艺试验研究。试验结果表明,采用预先脱除脉石-铜镍混合浮选流程,通过对含Ni 0.51%、含Cu 0.20%、含Co 0.02%的原矿进行选择性磨矿,利用MIBC预先脱除部分易浮脉石,碳酸钠作矿浆pH调整剂,CMC作MgO脉石的抑制剂,硫酸铜和丁基黄药分别作铜镍矿物的活化剂和捕收剂,全流程浮选闭路试验获得了含Ni 7.78%、Cu 2.91%、Co 0.24%,回收率分别为Ni 72.98%、Cu 66.57%、Co 51.29%的铜镍混合精矿。该工艺流程获得了较好的选别效果,实现了铜、镍、钴的有效回收。     

某难选铜镍矿石选矿新工艺

某难选铜镍矿石含铜0.27%、含镍0.72%,为实现矿石中铜镍矿物的综合回收与高效分离,本文采用“铜-镍优先浮选”工艺流程,以自主研发的高效铜矿物捕收剂LP-01作选铜捕收剂,石灰作抑制剂,在矿浆pH为8.5的低碱介质中优先浮选铜矿物;浮选尾矿以硫酸铜作活化剂、丁基黄药作捕收剂浮选镍矿物,获得了含铜25.35%、含镍0.79%,铜回收率80.73%的铜精矿,含镍8.15%、含铜0.23%,镍回收率75.41%的镍精矿。试验指标良好,铜、镍矿物都得到了较好的浮选回收与分离。     

提高金川二矿区富矿石选矿指标的研究与应用

通过对金川二矿区富矿石进行工艺矿物学研究,查明了镍金属损失的原因,针对其矿石性质特点、主金属的浮游特性,研制出了新型捕收起泡剂BQ622,在小型试验和工业生产中均取得了较好的选矿技术指标。新建14 000 t/d选厂工业试验结果表明:与原药剂制度相比,BQ622应用后镍回收率提高了0.82%,有效提高了矿产资源综合利用率,具有一定的参考价值。     

Mineralogy and flotation of rare-earth-bearing barium fluorophlogopite

In iron-making processes with rare-earth-containing iron ores as feeds, therare-earth oxides report to slags. While most rare-earth oxides in the slags can be recovered by a combination of high intensity magnetic separation with gravity separation processes, europium and scandium remain in tailings of the slag mineral separation process. Crystal structure and chemical composition of the europium and scandium-bearing “mineral” in the slags have been determined by X-ray diffraction and electron microprobe analyses. This “mineral” was identified as rare-earth-bearing barium fluorophlogopite (REBF). Flotation experiments were conducted to investigate the flotation behaviors of the REBF. Experimental results show that the REBF can be collected by using dodecylammonium acetate, sodium oleate or a combination of both in an appropriate proportion and sequence. The flotation reaction of the REBF with the collectors was discussed with the help of infrared spectra and electrokinetic measurements. Physical adsorption of the cationic collector and chemical adsorption of the anionic collector on the surface of the negatively charged REBF were observed. Synergistic effect is significant when addition of sodium oleate is followed by addition of dodecylammonium acetate during flotation.     

砷黄铁矿浮选特性研究

以砷黄铁矿为研究对象,在丁基黄药捕收剂浮选体系下,系统研究了捕收剂用量及矿浆p H、几种金属离子、无机阴离子和有机调整剂对砷黄铁矿浮选特性的影响,获得了不同浮选药剂作用条件下砷黄铁矿的浮选规律,并初步分析了捕收剂与调整剂对砷黄铁矿浮选特性产生影响的原因。     

吉林某难选铜镍硫化矿石选矿试验

吉林某难选铜镍硫化矿石铜品位为0.19%、镍品位为0.42%。矿石中铜镍矿物共生密切,嵌布粒度微细。为给该矿石的开发利用提供依据,进行了铜镍混合浮选—分离浮选试验。结果表明:在磨矿细度为-0.074 mm占80%条件下,以硫酸铜为活化剂、乙基黄药+丁铵黑药为捕收剂、2号油为起泡剂、CMC为精选抑制剂,经1粗3精2扫铜镍混合浮选获得铜镍混合精矿,铜镍混合精矿再磨至-0.038 mm占90%,以石灰为抑制剂、乙基黄药为捕收剂,经1粗3精2扫铜镍分离浮选,获得了铜品位为24.62%、铜回收率为79.04%、镍品位为0.73%、镍回收率为1.06%的铜精矿及镍品位为5.73%、镍回收率为75.85%、铜品位为0.11%、铜回收率为3.22%的镍精矿,实现了铜镍的有效综合回收。     

镍钼矿中氧化镍和氟磷灰石浮选分离研究及应用

为了提高镍钼矿中镍矿物浮选回收率,对其进行了浮选分离试验研究。分子动力学模拟结果表明,十六烷基吡啶在氧化镍表面的吸附能为-443.04 kJ/mol,小于在氟磷灰石表面的吸附能(-420.16 kJ/mol),可作为氧化镍和氟磷灰石浮选分离的捕收剂。酒石酸与Ca²⁺形成络合物,络合物附着于氟磷灰石表面,影响捕收剂与氟磷灰石接触,可以作为浮选抑制剂。该镍钼矿石镍含量4.52%,经浮选可以得到镍回收率89.06%、尾矿中镍含量低至0.71%的良好指标。     

SUPASIM: a flotation plant design and analysis methodology

A methodology was developed in the mid-1980s to predict plant performance from standard laboratory flotation tests. The technique is based on a simple, empirical kinetics model, and is tailored for use by the practical metallurgist.To date the performance of more than 20 flotation plants has been predicted, encompassing copper, lead, zinc, nickel, phosphate, pyrite, graphite, cassiterite, platinum and various slags. The method has successfully been used to predict and design four flotation plants using data generated from bench-scale laboratory flotation testwork. All have since been commissioned, and have performed as predicted.The technique has now received broad acceptance within the South African mining industry, for example in the last year alone it has been used to drive flowsheet development for seven new plants. It is also being used to assist in the optimisation of existing operating plants.The methodology is described in this paper. Also, verification of the methodology is presented using a number of case studies.     

Evaluation of alternative flotation technologies for copper cleaning & copper/nickel separation at Inco's Thompson mill

At Inco's Thompson Mill the predominant nickel and copper minerals are pentlandite and chalcopyrite respectively. Following bulk sulphide flotation, where soda ash is added as the pH modifier, sodium amyl xanthate as the collector and MIBC as the frother, slaked lime is added to depress the pentlandite and effect copper/nickel separation.Pursuit of an overall improvement of copper/nickel separation resulted in the pilot testing of column, Jameson and Outokumpu HG flotation cells. The pilot plants were run in parallel with the existing Denver DR30 flotation cells. The paper compares the metallurgical performance of the various flotation devices when applied to copper/nickel separation and copper cleaning. Based on copper/nickel and copper/gangue separation efficiencies, columns are shown to be the superior flotation device.     

Ferric leaching of copper slag flotation tailings

The pyrometallurgical production of copper generates slags, a residue with a significant content of this metal. Copper can be recovered from the slags by froth flotation after cooling, crushing, and grinding. The obtained Cu-concentrate is sent to the pyrometallurgical process. If grinding is not fine enough for efficient flotation, copper is lost in tailings. In this paper, the ferric leaching of slag flotation tailings is studied. Copper extractions of 66% are achieved by ferric leaching, and Cu content in tailings is reduced from 0.78% to 0.24%.