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铁矿反浮选脱硅的试验研究 总被引:5,自引:0,他引:5
对新型阳离子浮选药剂进行了铁矿反浮选脱硅的试验研究。结果表明:在pH=6~12的范围内,新型药剂CS1和组合药剂(CS2:CS1=2)的捕收能力与十二胺相当,但选择性更好。磁选铁精矿反浮选脱硅试验表明:新型组合药剂在获得与十二胺相近的铁品位前提下,铁回收率提高了8.32%。同时对硬水有较好的适应性,铁精矿品位仍可保持在69%以上,回收率90%以上。具有较好的适应性,是铁矿反浮选脱硅的有效捕收剂。 相似文献
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为检验武汉理工大学相关课题组开发的新型阳离子捕收剂MZ-3在磁选铁精矿反浮选中的捕收性能以及消泡行为,以酒钢公司焙烧-弱磁选铁精矿为原料进行了选别和消泡试验。结果表明:①对全铁品位为49.98%的磁选铁精矿进行反浮选脱硅,在pH=7、温度为25 ℃、MZ-3用量为500 g/t、苛性淀粉用量为300 g/t的情况下1次粗选,可获得铁品位为57.01%、铁回收率为74.66%的铁精矿,较好地实现了铁硅分离。②与捕收剂M-302B、醚胺和十二胺相比,MZ-3不仅反浮选精矿产品指标好,而且消泡速度快。因此,MZ-3是一种捕收效果好、易消泡的新型阳离子捕收剂,有利于改善选矿厂的生产指标、提高系统的稳定性。 相似文献
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反浮选新药剂选别袁家村铁矿石试验研究 总被引:1,自引:0,他引:1
采用长沙矿冶研究院研制的新型阴离子反浮选捕收剂CSC-68和新型调整剂CSR-36对袁家村铁矿石磁选精矿进行了反浮选试验,并与传统的NaOH +淀粉+CaO+脂肪酸阴离子捕收剂4药剂组合进行了对比。试验结果表明:采用两种新药剂的组合,可获得品位为66.06%,回收率为87.19%的反浮选铁精矿,精矿铁品位和回收率分别比传统4药剂组合高0.96和0.87个百分点。新药剂不仅选别指标优越,而且大大简化了药剂制度,还可避免因使用CaO而引起的管道结垢问题。 相似文献
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新型抑制剂DHY反浮选鞍千混合磁选精矿 总被引:1,自引:0,他引:1
为实现磁选铁精矿的高效、低耗反浮选富集,东北大学研制出了价格低廉、性能稳定的类淀粉结构的新型铁矿物抑制剂DHY。为论证该药剂优化鞍千矿业公司混合磁选精矿反浮选工艺的可选性,以现场药剂制度为基础进行了反浮选试验。结果表明,铁品位为47.64%、粒度较细、铁矿物在微细粒级明显富集、脉石矿物以石英为主的鞍千矿业公司混合磁选铁精矿,以DHY为铁矿物抑制剂,采用1粗1精2扫闭路反浮选流程处理,可获得铁品位为68.21%、回收率为88.01%的铁精矿,尾矿铁品位降至14.82%,与现场相比,不仅显著改善了精矿指标,而且可降低药剂用量、简化工艺流程。 相似文献
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<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth 相似文献
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《中国稀土信息(英文版)》2014,(6)
正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products 相似文献
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YANG Li 《中国稀土信息(英文版)》2014,(6)
<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy 相似文献
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Gao Wei 《中国稀土信息(英文版)》2014,(11)
正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium 相似文献
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《中国稀土信息(英文版)》2014,(8)
正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared 相似文献
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Bai Wenping 《中国稀土信息(英文版)》2014,(12)
<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH 相似文献
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《中国稀土信息(英文版)》2014,(9)
正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to 相似文献
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高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。 相似文献
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Chen Zhanheng 《中国稀土信息(英文版)》2014,(5)
<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586 相似文献