大山选矿厂浮选工艺的改进

大山选矿厂投产以来,针对浮选工艺流程中的问题做了大量改进:给药系统经历了从投产初的给药泵到 1995年的电子给药机,再到1998年的PLC-Ⅲ-64／5程控加药机和新型电磁阀的改进历程;浮选工艺经历了投产时的混合-分离两段浮选工艺,到2001年后的优先-混合分步浮选工艺的改进历程。通过这些改进,加上对原有设备性能的提高和新设备、新药剂的使用,使浮选指标不断提高,铜精矿品位从1991年的22．99％提高到2004年的24．89％,铜回收率从1991年的78．34％提高到2004年的86．72％。     

XYT浮选给药自动调节装置鉴定会

<正> 1982年12月23日至25日,湖南省冶金局在长沙主持召开了XYT浮选给药自动调节装置鉴定会。出席鉴定会的有省内外有关矿山、工厂、科研、设计、大专院校等25个单位的48名代表。 XYT浮选给药自动调节装置是由长沙冶金工业     

浮选电子给药机的现状和发展

本文介绍了国内浮选电子给药机的现状,总结概述了各种类型培药机的结构、特点和应用情况,讨论了其发展前景和推广应用中应注意的问题。     

浮选数控给药系统在梅山选矿中的研究与应用

梅山矿业针对浮选给药系统药剂单耗高的问题,进行了浮选数控给药系统工业试验与研究。通过将浮选作业原有给药系统升级为数控给药系统,收集工业试验前后浮选质量指标和药剂消耗指标,统计并分析了数控加药系统对浮选的影响。试验结果表明：数控给药系统使用后,获得的浮选作业硫精矿品位为34.37%、硫回收率达67.51%,捕收剂单耗58.07 g/t,起泡剂单耗43.76 g/t,数控给药系统可有效提高浮选回收率,降低浮选药剂消耗。     

DS—Ⅱ型数控给药机的应用

<正> 1981年,大厂矿务局长坡选矿厂购置一台DS-Ⅱ-10型数控给药机(以下简称给药机),经安装、改进、调试、试用等四个阶段的工作,已于1983年3月正式用于粗精矿全浮选系统。通过几个月来的生产实践,取得了较好的效果。其突出之点有:(1)加药量准确,浮选操作稳定;(2)适应性强,可用于多种药剂,稍加改进后,不仅可用于黄药、浮选油,亦可用于硫酸铜的添加;(3)充分利用该设备工作稳定、可靠、操     

浮选自动加药系统在介休选煤厂的应用

浮选自动加药系统采用Modsoft环境下的编程软件实现程序控制,完成对浮选药剂加入量的实时检测与自动调节,从而可降低药耗,改善浮选工艺指标。     

浮选自动加药机的研究概况

为了获得良好的浮选结果,在浮选过程中有必要精确添加各种浮选药剂.加药机起添加药剂的作用,它的药剂添加精度将决定浮选效果好坏.综述了加药机的发展历程,介绍了电磁阀式加药机和计量泵式加药机的原理和结构,预测了自动加药机的发展前景.     

国外浮选电子给药机的几种类型结构

国外浮选电子给药机的几种类型结构浮选中按需要准确地添加各种药剂，是控制工艺过程的重要技术操作手段，对选别效果和技术经济指标影响很大，尤其在多金属复杂矿石分选时更是如此。我国自５０年代起使用的杯式给药机，由转动挂杯加药，用增减杯倾倒角和杯数来调节药液添...     

微型机在选矿给药中的应用(摘要)

本文论述了把微型机应用于选矿给药过程并制成WG-10型给药机的科研成果。首先分析了我国浮选过程中加药方式的现状,工业现场对研制一种既能准确添加药剂又能防止药剂毒害作用的自动控制加药系统的迫切要求,以及把微型机应用于选矿给药中的重要意义;接着,详细阐述了WG-     

浮选过程自动控制系统设计

浮选作为细颗粒物料分选较为常用的一种方法,其生产过程的合理稳定运行,对于提高矿物资源的利用率具有极为重要的意义。本文采用上位机和下位机共同工作的集散控制方式设计浮选过程自动控制系统,其中上位机用于监控,主要实现人机交互,如工艺参数的设定,用户指令的下达,设备状态的显示等;下位机用于控制,如根据上位机下发的指令实现逻辑、过程控制,并把运行数据传送给上位机。实际运行表明,系统操作简单,运行稳定,提高了浮选生产效率和自动化水平。     

Current situation and future trend of China rare earth luminescent material industry

<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     

China rare earth market review

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     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<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     

Market opportunities and challenges for rare earth polishing powder

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     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

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     

Market and recycling of NiMH battery

<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     

China rare earth market review

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     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

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。     

2013 NdFeB export analysis

<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