湖南郴州某白钨矿选矿试验研究

湖南郴州某白钨矿WO_3品位为0.31%,因矿石中含钙脉石矿物较高、钨华含量较高,导致白钨选别困难。针对该矿石分别进行了磨矿细度、碳酸钠用量、氢氧化钠用量、水玻璃用量、捕收剂种类和用量、加温精选等浮选条件试验。试验结果表明,在最佳条件试验的基础上,采用"优先浮硫—白钨常温粗选—钨粗精矿加温搅拌-精选"的工艺流程。白钨矿常温粗选闭路试验采用一粗二精二扫的试验流程,获得WO_3品位为4.42%,WO_3作业回收率为84.85%的白钨粗精矿;对白钨粗精矿进行加温搅拌-精选闭路试验,精选闭路试验流程为一粗二精一扫,获得WO_3品位为61.25%,作业回收率为95.62%,综合回收率为80.05%的白钨精矿,实现了对该白钨的有效回收。     

某低品位白钨矿选矿试验研究

非洲某夕卡岩型白钨矿,主要有用矿物为白钨矿,含少量辉钼矿、辉铜矿等硫化矿物,脉石矿物主要有透闪石、阳起石、石英等。用浮选法回收,通过流程探索试验,磨矿细度试验,抑制剂、调整剂、捕收剂种类和用量等条做试验,确定了试验流程和条件。通过常温和加温精选试验对比,确定加温精选效果好。通过预先脱硫,以氢氧化钠+碳酸钠+水玻璃作抑制剂,ZL作捕收剂,通过常温粗选、加温精选,对原矿品位为0.21%的单一白钨矿,可获得品位63.58%,回收率为82.60%的白钨精矿。闭路试验结果表明,该工艺能很好地回收该低品位单一白钨资源。     

某白钨矿回收工艺的试验研究

针对某钨矿的主要钨矿物为白钨矿,采用优先浮硫-白钨常温粗选-钨粗精矿加温精选的工艺回收钨矿物。试验表明:在磨矿细度为-0.074 mm占82%的条件下,以碳酸钠和水玻璃为调整剂,ZL为捕收剂浮选钨。当原矿品位WO3为0.593%时,可获得品位WO3 65.97%、回收率81.98%的白钨精矿。     

云南某白钨矿浮选试验研究

云南某低品位白钨粗精矿WO3品位为6.37%,CaF_2品位为22.68%,矿石成分复杂、萤石含量高,导致白钨选别困难。以该白钨粗精矿为研究对象,采用加温浮选法,开展了水玻璃用量、抑制剂种类和用量、捕收剂种类和用量等条件试验。试验结果表明,选用水玻璃和氟硅酸钠作为组合抑制剂,能够较好地抑制萤石,使白钨矿与萤石得到有效分离,显著提高了钨精矿中钨的品位及回收率。731捕收剂相比于其他捕收剂具有较好的捕收效果。在最佳条件试验的基础上,当水玻璃用量为8 000 g/t,氟硅酸钠用量为1 500 g/t,731捕收剂用量为300 g/t时,对白钨粗精矿进行了精选闭路试验,试验流程为一粗七精三扫选(中矿逐级返回),获得WO_3品位为56.63%、回收率为96.10%的钨精矿,取得了较好的浮选效果,为选别同类矿石提供了一定的参考。     

甘肃某白钨浮选尾矿再回收白钨试验研究

对甘肃某白钨浮选尾矿再回收白钨进行了可选性试验,考察新型白钨浮选剂FX-6对低品位白钨矿的捕收效果。粗选试验结果表明,药剂用量在碳酸钠为1 800 g/t,水玻璃为2 000 g/t,FX-6为1 800 g/t的条件下开路一次粗选,白钨粗精矿WO3品位可以达到1.29%,回收率可以达到69%。粗精矿加温精选,在水玻璃用量70 kg/t时,两次精选后得到了白钨精矿WO3品位为56.86%,回收率为51.93%的良好指标。同时验证了FX-6新型白钨浮选药剂可以有效地用于尾矿白钨再回收。     

江西某低品位白钨矿工艺矿物学及浮选试验研究

江西某低品位白钨矿,由于含有大量可浮性与白钨矿极为相近的钙、铝离子脉石矿物,浮选分离极其困难。试验在工艺矿物学研究的基础上,对其采用硫化矿浮选-白钨粗选-白钨常温精选-白钨加温精选的选矿工艺对其进行了浮选探索性试验研究,小型闭路试验获得钨精矿品位WO_350.23%、回收率71.26%的选别指标,有效地实现了该低品位白钨矿的浮选分离。     

湖南某白钨矿选矿试验研究

以高钙白钨矿为研究对象,针对矿石中与白钨矿可浮性相近的含钙脉石矿物含量较高的特点,对WO_3含量为0.296%的原矿进行常温粗选-加温精选全流程闭路试验,常温粗选段使用对含钙脉石矿物抑制力更强的改性水玻璃为抑制剂,粗选段和精选段均采用选择性好,捕收力更强的新型捕收剂ZL,获得WO_3品位为69.54%,回收率为87.30%的钨精矿,取得了理想的试验指标。     

湖南某多金属矿综合回收白钨和锡石的试验研究

依据湖南某多金属矿矿石性质特点,采用预先浮硫化矿,浮硫尾矿常温浮白钨矿,白钨浮选粗精矿经酸浸脱磷产出合格的白钨精矿;白钨浮选尾矿经螺旋溜槽粗选富集,刻槽摇床精选产出锡精矿的工艺流程。对含WO30.617%、Sn0.043%的原矿,获得了钨(WO3)品位65.65%、回收率为85.09%的白钨精矿,锡品位28.20%,回收率为25.95%的锡精矿,白钨和锡石均得到有效回收。     

某难选黑白钨共生矿试验研究

某黑白钨共生矿中富钙、富镁的脉石矿物含量高,严重影响了钨矿物的回收利用。为了解决该技术难题,原矿经硫化矿浮选、磁选后对钨给矿(WO3 0.48%)进行试验研究,采用改性水玻璃、硝酸铅,螯合类捕收剂GYB和改性脂肪酸类捕收剂GYR组合进行粗选获得的黑白钨混合粗精矿,采用改进型彼得洛夫法-添加调整剂NC、NF、水玻璃和捕收剂GYR,进行加温精选分离,加温精矿经酸浸得白钨精矿,加温尾矿经摇床得重选黑钨精矿,摇床尾矿经浓缩添加调整剂NA、改性水玻璃和硝酸铅,组合捕收剂GYB和GYR得浮选黑钨精矿。小型试验获得指标:WO372.21%的白钨精矿,回收率59.08%。WO3 47.92%的重选黑钨精矿,回收率14.15%。WO3 55.72%的浮选黑钨精矿,回收率6.33%。钨的总回收率达79.56%。     

湖南某白钨矿选矿工艺研究

采用"优先浮硫-白钨常温粗选-钨粗精矿加温精选"的工艺流程及"碳酸钠-水玻璃-F9"组合药剂制度,对含钨(WO3)0.39%、其中白钨矿占有率为85%左右的原矿,取得了钨精矿品位(WO3)67.35%、回收率(WO3)80.09%的选矿技术指标。     

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.