云南某铜尾矿中铜和金的选矿回收试验

云南某铜尾矿主要金属矿物有黄铜矿、黄铁矿、磁黄铁矿等,黄铜矿以原生硫化铜为主,金以裸露金和黄铜矿包裹金为主。为综合回收其中有价铜、金,进行了选矿试验。试样在磨矿细度为-200目占85%的情况下采用两次粗选、第二次粗选后扫选、两次精选、第二次精选后扫选、混精矿再磨至-325目占85%、粗选后扫选精矿再磨至-325目占85%、中矿循序返回流程处理。最终获得铜品位15.51%、回收率68.34%、产率1.41%的铜金精矿,其中的金品位19.93 g/t、回收率54.04%,银品位231.72 g/t、回收率41.89%。     

高铁富金铜硫多金属矿选矿实验研究

某高铁富金铜硫多金属矿铁品位为31.81%,金品位为1.37 g/t,铜品位为0.70%,硫品位为6.52%,矿石中71.83%的金赋存于铜矿物、黄铁矿、磁铁矿等矿物,而铜矿物、黄铁矿、磁铁矿的嵌布粒度均较粗,普遍在+0.04 mm。采用“优先浮选铜-活化浮选硫-硫尾磁选回收铁”联合工艺处理该矿石,并采用ZA作铜捕收剂,全流程实验获得金品位27.80 g/t,铜品位20.60%,金回收率59.05%,铜回收率83.29%的铜精矿;金品位2.16 g/t,硫品位45.07%,金回收率20.24%,硫回收率86.25%的硫精矿;金品位0.80 g/t,铁品位60.83%,金回收率14.25%,铁回收率45.90%的铁精矿。实现了矿石中金铜铁及载体矿物的高效回收。     

富银铜锌多金属矿选矿试验研究

某富银铜锌多金属硫化矿,其银品位为125 g/t,铜品位为0.26%,锌品位为1.13%,硫品位为3.04%;90%的银赋存于银黝铜矿、黝铜矿等铜矿物中。采用“优先浮银铜﹣锌硫混浮﹣锌硫分离”工艺流程进行处理,选择高效银捕收剂SAC强化银的回收,全流程实验获得的银(铜)精矿含银10094 g/t,含铜16.67%,银回收率88.78%,铜回收率80.23%,锌精矿含锌45.46%,锌回收率81.81%。实现了矿石中银铜锌的综合回收。     

紫金山铜金矿中金铜银的赋存状态研究

采用矿物自动分析仪(MLA)、扫描电镜(SEM)、X射线衍射(XRD)研究了紫金山金铜矿入选矿石中有价元素铜、金、银的赋存状态以及分选过程中的金属走向。结果表明,铜矿物主要有蓝辉铜矿、铜蓝、硫砷铜矿,金银以游离矿物和硫化物包裹体为主。铜矿物常见沿明矾石溶蚀孔洞或碎裂缝隙充填,与黄铁矿密切连生,从原矿中分选铜矿物,理论品位为Cu 69.70%,理论回收率93.55%。中粒金嵌布于铜矿物和黄铁矿矿物粒间或裂隙,可随着铜和硫的回收进入铜、硫精矿,金的理论回收率分别为57.19%和27.27%;微细金粒包裹于明矾石和石英中,随脉石损失于尾矿中。银以显微银为主,多见呈微细粒包裹于硫化矿物中,铜精矿和硫精矿中银的理论回收率分别为56.96%和26.71%。     

从浮选尾矿中综合回收钼和白钨

针对某含钨、钼尾矿进行了试验研究,确定了浮选工艺条件,通过小型闭路试验获得白钨精矿含WO3 56.45 %、回收率为70.23%;钼精矿含钼Mo48.50 %、回收率58.20%的指标.     

高压辊磨对邦铺钼铜矿石选择性碎解作用及机制

对邦铺钼铜矿石进行高压辊磨(HPGR)和颚式破碎(JC),然后对两种产品进行磨矿—浮选试验,采用扫描电镜(SEM)研究矿石的高压辊粉碎特性,采用单体解离度分析仪(MLA)研究磨矿产品的解离特性,并从药剂用量等方面研究矿石的最佳磨矿细度和浮选工艺条件。结果表明:高压辊磨—球磨—浮选工艺适宜的磨矿细度为粒度小于0.074 mm的颗粒含量为65%,颚式破碎—球磨—浮选工艺适宜的磨矿细度为粒度小于0.074 mm的颗粒含量为75%;在适宜磨矿细度和药剂制度下,高压辊磨—球磨较颚式破碎—球磨浮选效果好,钼粗精矿钼品位提高0.83%,钼回收率提高1.05%;铜粗精矿铜品位提高0.23%,铜回收率提高2.66%;高压辊磨对邦铺钼铜矿石发生选择性粉碎现象。球磨对高压辊磨产品发生选择性解离现象,提出"矿石高压辊选择性粉碎—球磨选择性解离—浮选"技术方案。     

某铁矿尾矿中回收硫和铁的试验研究

某铁矿尾矿含有较多的黄铁矿和磁铁矿,针对该尾矿中铁矿物和黄铁矿的特性,采用重选先抛去大部分尾矿、重选粗精矿磨矿后浮硫,浮硫尾矿再回收铁的选别工艺,在原矿含硫7.40%、含铁17.91%时,取得了硫精矿品位42.20%、回收率91.93%,铁精矿品位61.42%、回收率达30.42%的指标。     

焙烧-凝聚-磁选工艺回收云锡脉锡型尾矿中的锡和铁

研究云南锡业公司（云锡）脉锡型尾矿粗粒部分的工艺矿物学特性；开发焙烧-凝聚-磁选回收锡和铁的短流程新工艺；采用SEM、XRD和EDS等技术对原矿和焙砂的微观结构及矿物组成进行表征,分析锡铁矿物与脉石矿物及锡石与铁矿物的分离机理.结果表明:锡主要呈微细粒嵌布于或以类质同象的形式存在于铁矿物中,少量锡嵌布于脉石矿物中,采用常规重选、浮选和磁选等工艺不能有效地分离锡铁矿物和脉石矿物及综合回收锡和铁；采用焙烧-凝聚-磁选新工艺,当焙烧温度为898 K、还原剂3用量为5％（质量分数）、焙烧时间为40 min和凝聚剂用量为6 kg/t时,可获得品位和回收率分别为66.58％和86.16％的铁精矿以及4.56％和63.80％的锡精矿,实现了锡铁矿物与脉石矿物的高效分离及锡和铁的同步回收.     

南非低品位铂钯尾矿选矿试验研究

南非某低品位铂钯尾矿,其铂品位为1.1 g/t,钯品位为0.5 g/t,Cr2O3品位17.96%。采用“强磁选预富集-细磨浮选高效富集”工艺流程进行处理,以SH作抑制剂、硫酸铜作活化剂,丁黄药+SAC作铂钯捕收剂,全流程实验获得铂品位65.9 g/t,钯品位24.0 g/t,铂回收率60.93%,钯回收率48.72%,铂+钯品位89.9 g/t的铂钯精矿,同时获得Cr2O3品位39.19%,回收率70.19%的铬精矿。实现了铂钯尾矿中铂钯的有效回收,并综合回收了铬。     

云南蒙自某锡多金属矿的工艺矿物学(英文)

通过以自动化电子探针为基础的矿物扫描和定量分析,研究云南某锡多金属矿的工艺矿物学。结果表明,矿石中锡(0.98%)为最有回收价值的金属,锡石和黝锡矿为锡的主要矿物,占锡总量的94.90%;其他金属,如铜(0.261%)、锌(0.612%)和铅(0.296%)可作为有价金属回收。磁黄铁矿、黄铁矿、毒砂、闪锌矿、方铅矿、黄铜矿等矿物呈浸染状分布在矿石中。石英、绢云母和白云石为主要的脉石矿物。选择0.037mm作为最佳的磨矿细度以确保锡矿物的单体解离。     

自主研制的铬铁矿砂回收系统简介

为了能把铬铁矿砂从开箱后的混合砂中分离出来,实现回收再利用,研制了铬铁矿砂回收系统。该系统铬铁矿砂的回收率80%,分选后铬铁矿砂中硅砂含量1.5%,硅砂中铬铁矿砂含量2%。     

Separation of indium(Ⅲ),gallium (Ⅲ),and zinc(Ⅱ)with Levextrel resin containing di(2-ethylhexyl)phosphoric acid(CL-P204):Part Ⅰ. Selection of separation conditions

A kind of Levextrel resin separation process was developed for separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from aqueous sulfate solution with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204). The aim of the research is to collect preliminary results for a pilot-scale production. Properties of adsorbing indium (Ⅲ), gallium (Ⅲ),and zinc (Ⅱ) from sulfate solution with the Levextrel resin were first studied by batch operation and column operation. The optimum pH, adsorption capacities and concentrations of stripping agents for indium (Ⅲ), gallim (Ⅲ) were tested. The separation order of indium (Ⅲ), gallim (Ⅲ), and zinc (Ⅱ) from sulfate solution with CL-P204 Levextrel resin was found that indium (Ⅲ) could be first separated by adsorbing at the acidity of 1.0 mol/L whereas gallium (Ⅲ) and zinc (Ⅱ) could not, and they were adsorbed together by adsorbing at pH = 2.8, then separated from each other by stripping with 0.1 and 0.5mol/L hydrochloric acid, respectively. The recoveries of three metal ions were all higher than 99%. The cyclic properties of this resin are well.     

天然气储运系统多相流分离机的设计

天然气储运系统用分离机主要用来除去糅杂在天然气中的固液杂质，以提高天然气的纯度，减少其中杂质对天然气储备系统运输管道和存储罐体的腐蚀堵塞等破坏。传统的分离设备结构复杂，安装与维修十分繁琐，且地层水、凝析油和天然气分离效果不好，操控系统复杂，影响了生产效率，加大了生产成本。对此做出改进，基于重力及惯性分离技术，设计一种可智能操控且效率更高的多相流分离设备。该设备结构简单，操作方便，已经实际应用于企业生产环节。     

卧螺离心机在氧化铝生产赤泥分离技术中的应用探讨

介绍了卧螺沉降卸料离心机的结构原理，并就卧螺离心机在氧化铝赤泥分离工艺中的产业化应用进行了挥讨．分析了遇到的问题和改进的方法。     

离子吸附型稀土萃取分离新工艺

报道了萃取分离中国南部离子吸附型稀土矿的一种新工艺 ,第一步进行La Gd/(Gd)TbDy(HoY) /Ho LuY萃取分组 ,出口水相La Gd再进行Nd/Sm分组 ;中间出口的 (Gd)TbDy(HoY)组份进行Tb/Dy分离。在各系列的萃取段前设附加段来提高稀土浓度和回收率。该工艺流程衔接容易 ,昂贵的P50 7萃取剂使用量减少 ,处理能力增加 ,贵重Tb ,Dy在流程前部富集直收率提高 ,制取高纯Tb,Dy成本降低。适用于高钇矿经提钇后的低钇混合稀土矿、中钇富铕矿、低钇离子稀土矿的萃取分离     

强化烧结熟料溶出中赤泥的快速分离

通过对比传统沉降分离和机械离心分离在强化烧结熟料溶出中的分离效果，结合机械离心分离的工业试验特点．提出机械离心分离熟料溶出浆液是目前解决赤泥快速分离、烧结法溶出粗液进一步提高浓度的有效办法。是实现烧结法熟料高浓度溶出的关键一步。     

N263-仲辛醇-煤油体系萃取分离钨钼

研究了在不加络合剂条件下,在高钨低钼酸性体系中N263(氯化三烷基甲胺)萃取分离钨钼的性能,考察了单级分离过程中各因素对分离效果的影响,实验表明单级萃取分离钨钼效果较好,在料液含WO3浓度为60 g/L、Mo浓度为2.0 g/L,溶液pH=6,有机相中配比为15%N263+10%仲辛醇,相比O/A=1,振荡时间为10 min的条件下,βWO3/Mo的值为28.2。但钨钼交换分离性能差,随着交换次数的进行交换分离系数不断减小,甚至达到βWO3/Mo<1,导致串级萃取不能有效分离钨钼。因此不加络合剂条件下由胺类萃取剂N263深度分离钨钼至今仍未实现有效分离。     

Experimental study on separation of valuable refractory aggregate from investment casting ceramic shell waste

In the present study, a processing technique for recycling investment casting ceramic shel waste was proposed to separate valuable refractory aggregate zircon sand. The microstructure and phase constituents of the shel waste and separation process were investigated. The results show that the characteristics of microstructure and phase constituents of the shel waste can meet the conditions for preferentialy separating zircon sand, and zircon sand can be separated by gravity separation on a shaking table. The separated zircon sand has good shape and high purity, and can be used for the production of castings and other applications.     

SEPARATION CHARACTERISTICS OF THE HYDROCYCLONE WITH A CENTRAL CONE AND ANNULAR TEETH

ＳＥＰＡＲＡＴＩＯＮＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＴＨＥＨＹＤＲＯＣＹＣＬＯＮＥＷＩＴＨＡＣＥＮＴＲＡＬＣＯＮＥＡＮＤＡＮＮＵＬＡＲＴＥＥＴＨ￥ＣｈｕＬｉａｎｇｙｉｎ；ＣｈｅｎＷｅｎｍｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｃａｌＰｒｏｃｅｓｓｉ...     

Separation efficiency of alumina particles in Al melt under high frequency magnetic field

The effects of separation time and magnetic induction intensity on the separation efficiency of alumina particles with diameters varying from 30 to 200 μm in aluminum melt were investigated. The experimental results show that the particle-accumulated layer is formed in the periphery of the solidified specimen when the diameter of the separated molten metal, the magnetic induction intensity and the separation time are 10 mm, 0.04 T and 1 s, respectively. When the separation time is 2 s, the particle-accumulated layer can be observed obviously and the separation efficiency is about 80%. There are few alumina particles in the inner of the solidified specimen when the separation time is 3 s. The separation efficiency higher than 85% can be achieved when the separation time is longer than 3 s. When the magnetic induction intensity is 0.06 T, the visible particle-accumulated layer can be formed in 1 s and the separation efficiency is higher than 95%. The experimental results were compared with the calculated results at last.