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滤饼脱水助剂的结构类型与研究现状 总被引:2,自引:0,他引:2
在选矿工业中,通常所说的助滤剂(Filtration Aids)是指能够降低滤饼水份的药剂,有时也被明确称作滤饼脱水助剂(Filter Cake Dewatering Aids)。按照药剂类型及作用方式,可以将助滤剂分为两种基本类型:絮凝剂型助滤剂和表面活性剂型助滤剂。如果按助剂离子性进一 相似文献
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助滤剂对锰精矿过滤性能的影响 总被引:3,自引:0,他引:3
本文探讨了两种表面活性剂型助滤剂和两种颗粒型助滤剂,对以碳酸锰矿石为主的锰精矿过滤性能的影响.研究结果表明,这四种助滤剂均能降低滤饼比阻,提高过滤速率。 相似文献
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赤铁矿浮选精矿往往存在因药剂残余导致的细粒精矿过滤困难等问题,为了高效便捷地解决这一问题,选用了十二烷基磺酸钠、十二烷基苯磺酸钠、辛基酚聚氧乙烯醚-10、丁二酸二异辛酯磺酸钠和十六烷基三甲基溴化铵共五种表面活性剂型助滤剂对其进行实验室真空过滤试验研究。以巴西某赤铁矿精矿为研究对象,以油酸钠为捕收剂体系,分别考察了油酸钠用量、助滤剂用量和质量浓度、矿浆pH和温度对滤饼比阻和滤饼含水率的影响。结果表明,随油酸钠用量的增大,滤饼比阻和含水率均增大。最佳用量条件下,五种助滤剂均能使滤饼比阻和含水率降低,其中在室温以及自然pH条件下,十六烷基三甲基溴化铵对滤饼比阻的降低效果最好,十二烷基磺酸钠对滤饼含水率的降低效果最好。矿浆pH和温度对助滤剂降低滤饼比阻的影响幅度不大,而对含水率的影响较为明显。 相似文献
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大冶铁矿硫精矿KF—102助滤作用机理的研究 总被引:4,自引:0,他引:4
论述了KF-102是大冶铁矿精硫有效的一种助滤剂,其适宜用量135g/t。作用机理KF-102可使滤饼比阻降低,减弱了水化膜的影响,进而降低了滤饼的水分,同时它能改善滤饼结构,使得滤饼中料物粒度分布均匀,并使滤饼孔隙度增加了2.5个百分点,提高了过滤速度。 相似文献
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本文对酸化油3132助滤剂的工业试验作了介绍,认为该助滤剂是解决东鞍山铁精矿过滤,降低铁精矿水份的一条可行的途径。目前、东鞍山烧结厂用塔尔油和氧化石腊皂作捕收剂,采用单一碱性正浮选法处理细粒嵌布的贫赤铁矿石。浮选精矿由于粒度较细,而且含泥量较多,泡沫发粘,造成脱水过滤困难。现行的浓缩过滤工艺存在过滤效率低和滤饼水份高等问题,影响了烧结矿的产量和质量。所 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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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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《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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<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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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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《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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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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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
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《中国稀土信息(英文版)》2014,(8)
正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of 相似文献