某高磁黄铁矿铜铅锌矿选矿分离试验研究

针对某含高磁黄铁矿复杂铜铅锌矿中有用矿物嵌布关系复杂,不同种类矿石之间相互侵蚀包含,同时大量的可浮性极好的磁黄铁矿的存在造成了浮选过程中有价金属精矿产出困难的特性研究,确定了预先磁选脱硫-优先浮铜-铜硫分离-铜尾矿浮铅-铅尾矿活化浮锌的工艺流程,该流程在原矿含铜0.31%、铅0.53%、锌1.66%的条件,获得了铜精矿含Cu21.96%,Cu回收率68.13%;铅精矿含Pb50.68%,Pb回收率52.24%;锌精矿含Zn41.58%,Zn回收率79.77%的选矿指标。     

内蒙古某低品位铅锌银矿选矿试验研究

内蒙古某铅锌银矿原矿品位低,试验研究在工艺矿物学的基础上,对可能影响选矿指标的因素进行了分析,结果表面,方铅矿与闪锌矿形成复杂的镶嵌关系,不利于铅锌的分离,闪锌矿平均含有6.86%的Fe,将影响锌精矿品位。试验研究确定了采用铅锌硫优先浮选的选矿工艺,采用该工艺获得的铅精矿中含Pb 60.92%、回收率为88.24%,含Ag 3 109.12 g/t、回收率为64.76%;锌精矿中含Zn 45.83%、回收率为87.47%,含Ag 223.00 g/t、回收率为15.51%;硫精矿中含S 43.89%、回收率为70.60%。     

某选锌尾矿硫砷分离工艺研究

以某选厂选锌尾矿为研究对象进行硫砷分离工艺研究.确定采用先磁后浮、磁选尾矿再硫砷混浮、混合精矿再采用抑硫浮砷法分离硫砷的工艺流程,以组合抑制剂石灰＋腐植酸钠＋WX-2联合抑制硫、硫酸铜活化砷,通过小型闭路试验,可获得硫品位39.86％、砷品位0.76％、硫回收率65.05％的硫精矿;砷品位12.52％、砷回收率44.19％的砷精矿.硫精矿含杂低,质量较好,硫砷分离成功.     

会泽某铅锌复杂矿及共伴生资源高效选矿综合回收利用技术研究

会泽某铅锌矿矿石中含Pb 8.17%,Zn 25.42%,Pb+Zn33%,为特富铅锌矿,同时含Ag 65.83g/t,Ge 70g/t,Au 0.14g/t,主要金属矿物有方铅矿、灰硫砷铅矿、闪锌矿、黄铁矿、黄铜矿、毒砂、磁黄铁矿、异极矿,极少量菱锌矿、白铅矿、铅矾,脉石矿物主要是白云石、方解石、云母等。通过采用先硫后氧--先铅后锌--铅硫等可浮--混合精矿再磨--铅硫分离浮选可获得较好的铅锌回收率,同时银、锗等有价伴生金属也得到有效回收。     

姚家岭复杂铜铅锌多金属矿选矿试验研究

针对铜陵姚家岭复杂铜铅锌多金属矿进行了选矿试验研究,在工艺矿物学研究、流程方案试验、条件试验的基础上,采用优先浮选流程,Z-200作为铜浮选捕收剂,25号黑药作为铅浮选捕收剂。全流程闭路试验获得含Cu22.98%、含Pb2.53%,铜回收率86.86%的铜精矿;含Pb45.40%,铅回收率62.15%的铅精矿;含Zn50.18%,锌回收率88.04%的锌精矿;含S45.15%,硫回收率76.09%的硫精矿。     

某铜锌锡矿浮选流程的优化及对锡重选的影响

针对某大型铜锌锡矿硫化矿浮选作业存在的问题开展浮选流程的优化研究.在工艺矿物学分析的基础上,结合现场生产浮硫尾矿硫砷含量超标致使锡精矿有害杂质过高的现状,确定了磁选除铁—优先浮铜—锌硫砷混浮—锌与硫砷分离的工艺.在确定工艺流程过程中对磨矿细度、浮选药剂制度进一步优化.优化后的浮选流程在原矿含Cu 0.06％、Zn 0.36％的条件下,得到了含Cu16.37％、Zn 7.92％,铜回收率为68.302％的铜精矿以及含Zn 44.44％,锌回收率76.368％的锌精矿,实现了对极低品位的伴生金属的回收.而且优化后的硫化矿浮选流程对硫砷脱除效果更佳,有利于后续锡石重选效率的提高.     

青海宏源氧化铅锌矿可选性试验研究

宏源氧化铅锌矿含铅10．5％,锌31．2％,铅锌氧化率均高于95％,采用硫化-黄药法浮铅和硫化-胺法浮锌,锌精选采用反浮选,获得铅精矿含Pb71．2％,含Zn4．65％,铅回收率81．5％;锌精矿含Zn45．4％,含Pb0．98％,锌回收率75．2％的良好指标。     

湖南某铅锌硫锡多金属矿选矿试验研究

湖南某铅锌矿属于低品位铅锌硫锡多金属共生矿,为了综合利用资源,采用铅优先浮选—锌硫混浮—锌硫分离—磁选—重选联合工艺流程回收该矿中的铅、锌、硫和锡矿物,实验室全流程试验指标:铅精矿含Pb 42. 04%、含Ag 2 721. 0 g/t,Pb回收率83. 82%,Ag回收率76. 58%;锌精矿含Zn 42. 12%、Zn回收率88. 02%;锡精矿含Sn 55. 18%,Sn回收率52. 60%。该工艺为研究同类型矿提供了参考依据。     

内蒙古某铅锌矿铅锌分离的研究与实践

内蒙古某铅锌矿矿石中含有次主铜矿物,游离出大量的铜离子,活化了闪锌矿,使铅锌可浮性差异变小,浮选铅锌精矿互含严重超标,且铅锌放品位和回收率指标很低。试验采用铅锌混选、铅锌分离的工艺流程及适宜工艺条件,使铅锌精矿成为合格产品,品位和回收率大幅度提高。     

含金银高硫微细粒铜锌矿石浮选工艺试验研究

某含金银高硫微细粒铜锌矿石中有用矿物粒度微细,黄铜矿与闪锌矿、方铅矿、毒砂关系密切,且硫高达21.44%。针对该矿石性质特点,试验探索了铜锌优先浮选、铜锌等可浮浮选、铜锌硫等可浮浮选、铜锌混浮—铜锌精矿再磨—铜锌分离、铜锌硫混浮—精矿再磨—铜锌硫分离等5种选别流程。试验结果表明:铜锌硫混浮—精矿再磨—铜锌硫分离流程适宜处理该矿石,其技术指标较好;同时,硫精矿(金银粗精矿)采用湿法工艺进行处理,也取得了良好的技术指标。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.