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《湿法冶金》2016,(5)
研究用溶剂萃取法从低浓度铟的硬锌渣浸出液中富集铟,探讨萃取过程中有机相组成、浸出液初始pH、萃取相比(Va/Vo)、搅拌速度、两相混合时间对铟萃取率的影响,以及反萃取过程中,盐酸浓度、相比(Va/Vo)对铟反萃取率的影响。试验结果表明:在浸出液初始pH约为0.5、有机相组成为20%P204+80%磺化煤油、搅拌速度为1 000r/min、萃取时间2min条件下,经过4级逆流萃取,两相分相效果较好,铟萃取率稳定在98%左右;反萃取过程中,用4mol/L盐酸作反萃取剂,水相残余酸度较低,铟单级反萃取率在92%以上。该低浓度铟溶液通过直接萃取-反萃取可以实现短流程、高收率、低能耗富集。 相似文献
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利用软锰矿在酸性(硫酸体系)条件下氧化浸出闪锌矿,对其浸出液进行萃取铟分离铁。以P507-煤油为萃取体系,考察酸度、萃取剂的浓度、温度、相比(体积比)、时间等对铟铁萃取率的影响。在室温条件下,酸度1.5 mol/L、P507体积分数30%、萃取相比1∶1、萃取时间10 min、铟的一级萃取率可达到99%以上,而铁的一级萃取率为20%。对负载有机相进行草酸(30 g/L)洗涤,铁洗涤率为99.99%,而铟的洗涤率仅为0.000 1%。达到了萃取富集铟分离杂质的目的。 相似文献
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《有色金属(冶炼部分)》2017,(5)
以P204和TBP作萃取剂,建立了从冶锌废渣中同时提取镓和铟的新工艺。在大于1mol/L酸度条件下,用P204-煤油作萃取剂实现了镓和铟萃取分离。经三级萃取后,铟的提取率达到99%以上,镓的萃取率小于1%。在大于4mol/L酸度条件下,用TBP-煤油作萃取剂可使镓的提取率接近100%,TBP有机相用1.5mol/L氯化铵溶液反萃,镓的反萃率可达99%以上。该提取工艺操作简单,可实现同时提取工业废渣中的镓和铟。 相似文献
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针对氯盐体系铟的萃取进行萃取体系、酸度、萃取剂浓度、相比和时间条件试验,对反萃过程中关键影响因素盐酸浓度进行试验。最佳萃取工艺参数为:有机相30%P204、相比(O/A)=1/3、皂化率60%、初始水相pH=0.5、室温混合5min;铟一级萃取率能够达到97.01%,三级逆流萃取能够稳定达到99.5%。反萃工艺参数为相比10/1、盐酸浓度3mol/L、室温混合5min,一级反萃率75.52%,三级反萃率达到100%。经萃取、洗涤、反萃后,铟回收率达到96.8%。 相似文献
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正With the signing of"Letter of intention for Propelling Integration of Shandong Rare Earth Enterprises"between Shandong Province Commission Of Economy and Informatization,China IronSteel Research Institute Group("China Steel Institute"),and China Rare MetalsRare Earth Co.,Ltd("China Rare Earth"),the"Shandong Rare Earth Group"jointly set up by the 3 units thus broke surface.On August 9,reporters of the China Economic Herald learned from Shandong Province 相似文献
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正In the face of the current situation of the lost WTO dispute on rare earth,and cancellation of export tariff for partial rare earth products,efforts of regulation and integration on rare earth by the state government will again be tightened.Reporters of the Economic Information Daily recently learned from authoritative sources that relevant ministries are 相似文献
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正Last month,Chinalco signed framework agreement for strategic cooperation with Harbin Municipal Government in Harbin Xiong Weiping,Chairman of Chinalco,said that based on the strategic deployment to build world top-class mining company with the highest growth potential,Chinalco was now concentrating all efforts on making strategic transition and structural adjustment,strategic cooperation with the local governments where 相似文献
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《Baosteel Technical Research》2014,8(4)
正Baosteel Technical Research,a quarterly journal,which is issued domestically and abroad,is run and sponsored by Baosteel Group Corporation.Baosteel Technical Research mainly reports the achievements in technological innovation,academic research,new product development and industrial equipment improvement by Baosteel.It will continue to follow up on hot topics and serve the company’s technological development and progress.Its readers include experts in 相似文献