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1.
过滤过程使用的助剂,都可以称作助滤剂。添加助剂可以提高设备效率,降低滤饼水份或改善滤饼机械性质,减少滤布阻塞,延长滤布寿命。但是,通常只把那些能够降低滤饼水份的化合物称为助滤剂。因此,助滤剂有时也被明确称作“滤饼脱水助剂”,或称为“脱水助剂”。本文仅就助滤剂种类及其应用进行简单介绍。  相似文献   

2.
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   

3.
用表面活性剂助滤大冶铜精矿的试验研究   总被引:1,自引:0,他引:1  
为降低大冶铁矿铜精矿的滤饼水分,进行了表面活性剂的助滤试验。试验研究了表面活性剂种类和用量、矿浆pH值、过滤压差及药剂添加方式等条件对铜精矿过滤过程的影响,结果表明,当矿浆pH=10,用量为125和140g/t时,助滤剂TS-2和TS-1既能提高过滤速度,又能降低滤饼水分约3个百分点。若采用分段—喷洒加药方法,效果更佳。  相似文献   

4.
分析了太原钢铁公司尖山矿铁精矿滤饼水分偏高的具体原因,进行了多种助滤剂降低滤饼水分的试验。试验结果表明,由活性炭粉、NaQ和OT混合而成的复合助滤剂具有良好的助滤效果,当加入量为350~380g/t时,滤饼水分最高降低1.36%,水分相对降低率约10%以上。  相似文献   

5.
助滤剂对锰精矿过滤性能的影响   总被引:3,自引:0,他引:3  
王卫星 《中国矿业》1994,3(2):59-63
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   

6.
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   

7.
将唐钢庙沟铁精矿由-0.045 mm 86.83%再磨至-0.045 mm 94.35%用于助滤剂研发试验,通过对助滤剂进行选型试验,重点对筛选出的助滤剂CYG-1进行了用量、过滤时间、给矿浓度、真空度等影响滤饼水分的条件试验。试验结果表明:如不添加助滤剂,过滤产出的滤饼水分高达13.38%;同等条件下,添加用量为300 g/t的助滤剂CYG-1,即可将滤饼水分降低至9.88%左右。将助滤剂CYG-1用于生产现场-0.045 mm 90%左右的铁精矿过滤,可将滤饼水分由原来不加助滤剂时的13.5%降低至9.98%左右,效果显著。  相似文献   

8.
针对尖山矿业公司生产的磁铁矿粉滤饼水分偏高的情况,以木质素磺酸钙为助滤剂进行了初步试验研究。试验结果表明,在加入量为30g/t时,木质素磺酸钙因絮凝作用和表面活性而使过滤速度增加,滤饼水分可以降低0.33个百分点。  相似文献   

9.
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  
松全元  孙体昌 《金属矿山》1999,(9):30-33,38
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   

10.
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   

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   

12.
<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   

13.
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   

14.
<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   

15.
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   

16.
文奇 《中州煤炭》2018,(6):175-178
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   

17.
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   

18.
<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   

19.
<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   

20.
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   

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