选矿专业论文

选矿专业论文

1磁选
关于磁选设备的进展，已有若干专门评
述〔’一41，这里仅就搜集到的磁选论著和信息
进行综合评述.
1.1弱磁选弱磁选进展的特点是，利用
高性能钦铁硼永磁体制造场强更高的筒式磁
选机，筒式磁选机大型化和预选大块磁铁矿
石，发展有利于提高精矿品位的弱磁选机。
钦铁硼永磁体(Nd:Fel刀)的最大磁能积可
达3.18X10“(T·A/m)，约为衫钻合金
(SmCo。)最大磁能积(1.59X10”T·A/m)的
z倍[51，银铁氧体(Sro.6Fe20，)最大磁能积
(0.326X105T·A/m)的10倍。因此，采用
钦铁硼磁系容易提高磁选机的场强和性能。
例如，德国用铰铁硼永磁棒研制的‘Permos’
鼓式磁选机的磁感应强度可达0.4~0.5T，
既可用于物料的干选或湿选，也可比较理想
地用于除去强磁选给料中的磁性较强的物
质〔6’。英国Boxmag--Rapid有限公司用铰铁
硼永磁体研制的‘Magnadrum’筒式磁选机
的磁场可达0.3~0.4T，用于分选工业矿物
和磨料粉〔’J。作为设备大型化的例子如，我
国马鞍山矿山研究院继开发CTDG1210型大
筒径磁选机后，又研制了CTDGIS16型更大
筒径的磁选机[3]，采用钱铁硼磁系，筒面平
均磁场可达0.4T，用于分选大块磁铁矿
石.鞍山黑色冶金矿山设计研究院与山东张
家洼铁矿合作研制了一种价1400mmx1600
mm电磁水冷磁滑轮【.〕，筒面平均磁场为
0.24T，处理能力可达200t/h，用于预选
一350mm的磁铁矿石，8个月内从66.7万t原
矿剔除含铁11.97%的7.5万t尾矿，共增加
经济效益53.42万元。为了提高设备的分选
效果，峨嵋矿产综合利用研究所将常规磁选
槽改进为磁一重选机〔，〕，其槽体上部由圆锥
形改为圆筒形，永磁铁氧体磁系由下部圆塔
形整体磁系改为上部多层圆阵形分散磁系，
场强分布为12~0kA/m，并配备浓度自
控系统，可将分选区矿浆浓度控制在30%~
35%之间，该设备在首钢迁安铁矿应用的效
果是:配合改进工艺流程，提高了分选粒
度，与以往细磨细筛工艺流程相比，在磨机
容量、精矿品位和铁回收率相同的条件下，
提高了生产能力27.66%.这种设备已发展
为价300、600、1500、1800、2500mm系列
产品。为了提高精矿品位，北京矿冶研究总
院研制了一种Bk一1021多力场筒式磁选
机〔川。该机采用7极开放磁系和顺流型选
箱，在选箱中部补加上升水和排粗粒尾矿，
在给料端设溢流堰和排细粒尾矿，使随筒运
行的磁性物始终受到反向水流的清洗作用，
达到提高精矿品位的目的。该机在南芬铁矿
选矿厂的工业试验结果表明，与价105Ommx
21OOmm半逆流型磁选机相比，精矿品位高
2.04%，分选效率高10.28%，而磁性铁回
收率只低0.19肠。
值得注意的是，前苏联研究了用电化学
调节法强化磁选过程‘川。在实验室研究确
定，对难选矿石和氧化矿石，第一段弱磁选
前采用电极化作用最有前途，精矿品位可提
高1.1%~1，4%，铁回收率提高4.5%、6.4
%，弱磁选尾矿在强磁选前再进行调节，铁
回收率又可提高l%、2.4%。对易选矿石，
极化作用后，第一段和第二段磁选的铁回收
率只能分别提高0.2%、2.8%和0.1%~2
叫。据认为，效果不同是由于矿石性质、磁
化强度和矿物组成不同.还由于矿石中的氧
化物的固定电位值和交换电流值及还原阴极
反应电流的极限度不同。
1.2强磁选强磁选设备的研制主要限于
永磁和电磁辊式或带式强磁选机。英国
BOxmag一Rapid有限公司用铰铁硼永磁体制
造了‘Magnaroll’辊式磁选机[‘〕，包括辊径
功75mm和功100mm两种规格，分别用于处
理细粒和粗粒物料。它在给料带面的磁场通
常为0.9~1.0T，并可由回路产生高梯度，
分选性能比感应辊式磁选机优越，典型应用
包括提纯硅砂和长石，提高红柱石质量和陶
瓷细粒干料除铁。前苏联研制了一种旋转磁
场辊式磁选机〔‘，，，又名电动分选装置。该
机主要由输料带和带下面的与带平行配置的
永磁辊构成。磁辊由三部分永磁体组成，中
部永磁体的磁极法向与辊轴垂直，前后永磁
体的磁极法向与辊轴成45“角，形成同一平
面三个方向的磁场，辊面磁场为0.45T。分
选原理是，利用非磁性导电颗粒在旋转磁辊
产生的旋转磁场中受交变电动力作用与非导
电颗粒分离该机被用于从有色金属加工渣
屑和废料中回收铝、铜等金属颗粒，导体产
品纯度和回收率都可达94%以上。我国马鞍
山矿山研究院继开发Cs一1型辊式磁选机
后，又研制了Cs一2型电磁感应辊式强磁选
机〔’‘]，其辊径和有效长度分别为叻380mm
和1468mm，双辊平行配置，共四个分选带，
磁场可在0.4~1.78T之间调节，激磁、传
动和风冷功率分别为4.23kw、13xZkw和
0.09义Zkw。该机在梅山铁矿用于分选12~
Zmm赤一菱铁矿石的指标是，原矿含铁
30.40%时，精矿品位和回收率分别为
44.05%和78.75%，单台设备的年经济效益
为63万元。与辊式磁选机不同。带铁磁性齿
板或球介质的湿式强磁选机由于构造复杂，
造价高，加之类型较多，发展的任务仍是推广
应用和改进完善。SHP一2000型强磁选机
在齐大山铁矿得到了应用〔’‘’，SQC一6一
2770型强磁选机在马钢姑山铁矿纳人生产流
程，功1500型双立环强磁选机在昆钢进一步
得到了推广应用〔‘5]SHP一3200型强磁选机
的改进包括〔’‘]:磁包角由83“改为70。，激磁
线圈由风冷改为油冷等。颇有意思的是，昆
钢对齿板介质平环磁选机和球介质立环磁选
机用相同试料作了对比试验[1’〕，结果表
明，齿板平环型的精矿品位和铁回收率分别
约高4%和8%，但立环型由于反向冲洗磁性
物，因而不易堵塞，对隔渣、隔粗、冲洗水
压和水质要求不严，运行更加可靠。
1.3高梯度磁选在磁选领域，对高梯度磁
选的研究仍占有重要位置，并取得了显著进
展。Svoboda叙述了一种新型高梯度磁选
机I‘’〕，该机采用短线圈水冷磁系，磁场为
1.ZT，输人功率110kw，用于从南非威特沃特
斯兰德残渣中回收金和铀，能力为30t/h。前
苏联新克里沃罗格采选联合公司和黑色金属
选矿研究院合作研制了3KM小一600型磁
选机〔‘吕’。该机采用恺装电磁磁系和网眼
135~x51~冲孔网板作分选介质磁感应强度为0.5T，处理能力可达30Ot/h，用于
处理细度95肠一0.045幻。刃n的氧化铁石
岩。铜矿资源丰富的赞比亚对高梯度磁选给
予了重视，最近用背景磁场1.3T、分选罐尺
寸23mmx32mmx104mm(有效容积42ml、
充填5P~10即m钢毛的横向磁场高梯度
磁选装置，对5~38拜m的铜精矿和原矿作了
试验研究t‘，’，在给料流速7cm/s和清洗流速
14cm/s条件下分选二次，前一种磁性产品的
黄铜矿和斑铜矿含量由72叫提高到86%，回
收率为82%;后一种磁性产品的铜矿物含量
从16%
.
提高到44%，回收率为72肠。在国内，
高梯度磁选已跨人工业应用时期，由中南工
业大学和江西赣州有色冶金研究所合作研制
的SLON一1000型立环脉动高梯度磁选机已
发展为SLON一r500型〔’。’，其分选环直径由
1ooomm增至150omm，处理量邮t/h提高到
30t/h，且结构有所改进，性能有所提高，第一
台SLON一1500型磁选机于1989年安装在姑
山铁矿，处理矿泥和强磁选细粒尾矿等难选
混合物料，原预计年经济效益106万元‘’‘’，实
际达到了108万元。1990年通过技术鉴定后，
该矿又订购了一台SLON一1500型脉动高梯
度磁选机。近两年来，还在弓长岭铁矿和铜
录山铜矿分别应用了五台与一台SLON一
1500型立环脉动高梯度磁选机。对脉动高梯
度磁选原理也作了进一步探讨〔”]。中南工
业大学对盘古山钨细泥的脉动高梯度磁选试
验研究也获得了好指标‘川:含WO30.74%的
钨细泥在合适条件下分选一次，得到WO3含
量17.90%和回收率73.78%的钨精矿;与非
脉动高梯度磁选相比，精矿品位高13.99%，
回收率只低1.09%。由中南工业大学和醛陵
市科技开发中心合作研制的CL一功500mm
周期式振动高梯度磁选机〔’‘」填补了我国高
岭土高梯度磁选的空白。该机的罐径和高分
别为500mm和300mm，磁场可达ZT，耗功率
约220kw，处理量约为Zt/h。工业试验表明，
该机的激磁和冷却性能良好，能有效除去高
岭土中的含铁顺磁性微细颗粒，显著增加高
岭土和成瓷白度，可产生较好的经济和社会
效益。
关于高梯度磁选理论，自1973年
Watson提出磁捕收颗粒数概念〔25’以来，已
建立了相当完整的磁捕收理论.最近，
svoboda等人根据能量观点，探讨了高梯度
磁捕收新理论〔26]。他认为，顺磁性颗粒在
高梯度磁场中与铁磁性捕集丝相碰撞时，具
有的总作用能为范德华一伦敦作用能、双电
层作用能、平均磁能和剪切应力对颗粒作功
之和，并由此导出被介质丝捕收的颗粒半径
(限定颗粒粒度)与颗粒磁化系数、磁场强
度、介质丝磁化强度和半径、流体速度和密
度及粘性系数等的关系式。
1.4超导磁选超导磁选已进人大型化工
业应用时期。美国Eriez磁力公司继1986年
将重25叶、直径为2134mm罐式超导磁选机
用于J.M.Huber公司高岭土加工厂提纯高
岭土后，不到一年，同一公司又订购了一台
重250t、直径3048刃n幻a的同类型超导高梯度
磁选机〔川，当该机正在制造时，又订购了
第三台这种设备，按计划已于1990年第一季
度安装运转。这是世界上最大的超导磁选
机，超导磁体用Nb一叭线绕制，液氦冷却
至一269℃，只需每个周期的开头供给激磁
电流，在60秒内，磁场可由零升至ZT，然
后不需外电能仍能维持ZT磁场，周期末关
闭时，磁体‘归还’的电能约为启动时‘借去’
电能之半。超导磁选的成本比普通高梯度磁
选稍高些，第二台设备的生产成本又比第一
台稍高些。德国KHD洪堡·韦达格公司已
将一台Descos超导筒式磁选机售给土耳
其〔:‘3，用于将弱磁性的蛇纹石脉石与菱镁
矿分离，原矿粒度为100~4幻n幻。，约含5102
20%、FeZ034肠，干选一次得含510:1.5
%和Fe:O，0.3%的菱镁矿粗精矿。该机的
规格为价120OmmxI500mm，磁场可达3.2
T，处理量为10肚/h，能耗约为1.skw·h/t，
是世界上第一台用于粗粒分选的超导磁选
机。现在期望用‘高温’超导体开发第三代超
导磁选机「‘91。
2电选
Kelly和Spottiswood用三篇论文全面
评述了电选理论。第一篇评述了基础原理，
包括静电学;颗粒特性，即颗粒导电率
(Band理论、电子捕获和其它形式的导电)，
半导体的表面电子学性质:颗粒或金属接触
的等效回路，流体中的颗粒运动。第二篇评
述了颗粒电性的测量和颗粒荷电的机理。电
性测量包括电场测量，荷电量测量，接触荷电
量累计测量和导电率测量。颗粒荷电机理包
括电晕荷电，感应荷电，摩擦荷电，荷电速率，
Coehn法则。第三篇评述了静电选矿实践，
包括静电选矿机的理论分析(受力分析)，静
电选矿机的经验分析，设备参数，分选回路，
三篇论文涉及95篇文献。关于电选的I:.艺和
理论研究也有一些报导。国外有人用添加剂
产生大量摩擦电荷的方法将KCI与NaCI分
离。该法利用KCI与NaCI摩擦带电的差
别，在物料中加人适量添加剂.使之在流动
层皮带运输过程中摩擦带电，然后在分选机
中得KCI精矿，KCI精矿品位可达92%，回收
率为50%。A.L.沙洛姆等人探讨了将非均
匀交流电场分离技术用于液体和气体介质条
件下的分选机理「川，建立了电场强度、荷
电量和库仑力与惯性力之比的表达式。

高岭土尾砂选矿试验研究（实际是石英砂提纯）毕业论文研究背景及意义怎么写？最好给个范文！急！高分悬赏

（一）破碎与磨矿

据调查，我国选金厂多采用颚式破碎机进行粗碎，采用标准型圆锥碎矿机中碎，而细碎则采用短头型圆锥碎矿机以及对辊碎矿机。中、小型选金厂大多采用两段一闭路碎矿，大型选金厂采用三段一闭路碎矿流程。
为了提高选矿生产能力，挖掘设备潜力，对碎矿流程进行了改造，使磨矿机的利用系数提高，采取的主要措施是实行多碎少磨，降低入磨矿石粒度。

（二）重选

重选在岩金矿山应用比较广泛，多作为辅助工艺，在磨矿回路中回收粗粒金，为浮选和氰化工艺创造有利条件，改善选矿指标，提高金的总回收率，对增加产量和降低成本发挥了积极的作用。山东省约有10多个选金厂采用了重选这一工艺，平均总回收率可提高2%～3%，企业经济效益好，据不完全统计，每年可得数百万元的利润。河南、湖南、内蒙古等省（区）亦取得好的效果，采用的主要设备有溜槽、摇床、跳汰机和短锥旋流器等。从我国多数黄金矿山来看，浮—重联合流程（浮选尾矿用重选）适于采用，今后应大力推广阶段磨矿阶段选别流程，提倡能收、早收的选矿原则。

（三）浮选

据调查，我国80%左右的岩金矿山采用浮选法选金，产出的精矿多送往有色冶炼厂处理。由于氰化法提金的日益发展和企业为提高经济效益，减少精矿运输损失，近年来产品结构发生了较大的变化，多采取就地处理（当然也由于选冶之间的矛盾和计价等问题，迫使矿山就地自行处理）促使浮选工艺有较大发展，在黄金生产中占有相当的重要地位。通常有优先浮选和混合浮选两种工艺。近年来在工艺流程改造和药剂添加制度方面有新的进展，浮选回收率也明显提高。据全国40多个选金厂，浮选工艺指标调查结果表明，硫化矿浮选回收率为90%，少数高达95%～97%;氧化矿回收率为75%左右;个别的达到80%～85%。近年来，浮选工艺流程的革新改造以及科研成果很多，效果明显。阶段磨浮流程，重—浮联合流程等，是目前我国浮选工艺发展的主要趋势。如湘西金矿采用重—浮联合流程，进行阶段磨矿阶段选别，获得较好指标，回收率提高6%以上；焦家金矿、五龙金矿、文峪金矿、东闯金矿等也取得一定的效果。又如新城金矿，原流程为原矿直接浮选，由于含泥较高（矿石本身含泥高，再加采矿尾砂胶结充填强度不够，带入部分泥砂）使选矿指标连续下降。经考查试验，采用了泥砂分选工艺流程，回收率由93.05%提高到95.01%，精矿品位135g/t提高到140g/t，稳定了生产。金厂峪金矿由于原矿品位逐年下降，因此使浮选指标降低，经与沈阳黄金学院等单位合作试验研究采用分支浮选工艺，提高了浮选指标和精矿品位。这一科研成果（于1988年1月黄金总公司通过了技术鉴定），为浮选工艺改造得到了新的启示。当然，浮选法和其他方法一样不是万能的，不可能对所有含金矿石都有效，主要还要考虑矿石性质，在选择工艺流程时，需进行多方面的论证和试验。
近几年来，为提高分选效果，在工艺不断改进的同时，对药剂添加制度和混合用药方面也作了不少改进和研究，在加药实现自动控制方面也有新的进展。

（四）化选-水冶提金工艺

1.混汞法提金

混汞法提金工艺是一种古老的提金工艺，既简便，又经济，适于粗粒单体金的回收。我国不少黄金矿山还沿用这一方法。随着黄金生产的发展和科学技术进步，混汞法提金工艺也不断得到了改进和完善。由于环境保护要求日益严格，有的矿山取消了混汞作业，为重选、浮选和氰化法提金工艺所取代。
在黄金生产中，混汞法提金工艺仍有其重要的作用，在国内外均有应用实例。目前河北张家口、辽宁二道沟、吉林夹皮沟、山东沂南等不少金矿应用了此工艺。辽宁二道沟金矿原为单一浮选流程，根据矿石性质改为混汞加浮选联合流程，总回收率提高7.81%(混汞回收率达64.6%)，尾矿品位由0.74g/t降到0.32g/t，年获效益为158万元。混汞法提金工艺关键在于如何采取防护措施，消除汞毒污染。

2.氰化法提金工艺

氰化法提金工艺是现代从矿石或精矿中提取金的主要方法。氰化法提金工艺包括：氰化浸出、浸出矿浆的洗涤过滤、氰化液或氰化矿浆中金的提取和成品的冶炼等几个基本工序。我国黄金矿山现有氰化厂基本采用两类提金工艺流程，一类是以浓密机进行连续逆流洗涤，用锌粉置换沉淀回收金的所谓常规氰化法提金工艺流程（CCD法和CCF法），另一类则是无须过滤洗涤，采用活性炭直接从氰化矿浆中吸附回收金的无过滤氰化炭浆工艺流程(CIP法和CIL法)。
常规氰化法提金工艺按处理物料的不同又分两种：一种是处理浮选金精矿或处理混汞、重选尾矿的氰化厂。采用这种工艺的多是大型国营矿山。如河北金厂峪；辽宁五龙、河南杨寨峪；山东招远、新城、焦家、三山岛金矿。另一种是处理泥质氧化矿石，采用全泥搅拌氰化的提金厂。如吉林海沟；黑龙江团结沟；安徽新桥金银矿等矿山。
我国早在30年代已开始使用氰化法提金工艺。台湾金瓜石金矿在1936～1938年期间，采用氰化-锌粉置换工艺提取黄金，年产黄金15万两。
进入20世纪60年代后，为了适应国民经济的发展，大力发展矿产金的生产，在一些矿山先后采用间歇机械搅拌氰化法提金工艺和连续搅拌氰化法提金工艺取代渗滤氰化法提金工艺。1967年，首先在山东招远金矿灵山和玲珑选金厂实现了连续机械搅拌氰化工艺生产黄金，氰化法提金由70%提高到93.23%，从此连续机械搅拌氰化法提金工艺在全国各大金矿迅速获得推广。1970年金厂峪金矿、1977年五龙金矿氰化厂相继建成投产，此后国内又陆续建成投产了一批机械搅拌氰化厂，氰化法提金工艺进入了一个新的发展阶段。
黄金生产的不断发展和金矿资源的迅速开发，自20世纪80年代起泥质高的含金氧化矿石大量增加，开发对这类矿石进行全泥氰化搅拌浸出的研究，并在黑龙江团结沟金矿建设一座日处理500t矿石的氰化厂，1983年投入生产。从此，全泥氰化法提金工艺日渐推广应用，先后在河南、吉林、河北、陕西、内蒙古等地采用此法建厂提金。与此同时，为解决泥质氧化矿石在浓密过滤固液分离上的困难，于1979年11月长春黄金研究所开始对团结沟金矿的矿石采用无过滤的炭浆法提金工艺，进行了历时两年的试验研究，获得了成功。在此基础上，于1984年8月在河南灵湖金矿自行设计利用国产设备建成我国第一座日处理50t矿石的炭浆法提金厂。使我国氰化法提金工艺向前迈进了一大步。炭浆法提金工艺成为处理泥质氧化矿石的岩金矿山就地产金的重要方法之一。此后在吉林、河南、内蒙古、陕西等地建起了炭浆法提金厂。1984年末，冶金工业部黄金局为推动炭浆法提金工艺在我国的应用，移植消化国外先进技术和设备，与美国戴维麦基公司合作，在陕西省西潼峪金矿、河北省张家口金矿，分别建起了一座日处理矿石250t（西潼峪）和一座450t（张家口）的炭浸提金厂。据调查张家口金矿达到93.54%（1988年炭浆回收率为90.25%）的回收率。
依*科学大搞技术革新的试验研究，使我国黄金生产技术水平有较大提高。如金厂峪金矿研究采用锌粉代替锌丝置换金泥成功，使置换率达到99.89%，金泥含金品位明显提高，锌耗量由原锌丝置换的2.2kg/t降到0.6kg/t，生产成本大幅度降低。继而在招远、焦家、新城、五龙等矿山推广应用也取得明显效果。低品位氧化矿石的堆浸工艺，在丹东虎山金矿试验成功后，相继在河南、河北、辽宁、云南、湖北、内蒙古、黑龙江、吉林、陕西等省区推广应用，经济效果明显，为低品位氧化矿的开发利用开辟了道路。据不完全统计，我国目前采用堆浸法生产的黄金年产量达到万两以上（仅河南省堆浸生产的黄金累计为1.3万两），但与发达国家相比，我国堆浸规模较小，一般为1×103～3×103t/堆，万t/堆的较少，在技术上也存在较大的差距，1988年陕西太白县双王金矿大型万吨级堆浸场投产，取得可喜的成果（矿石品位1.5g/t）。
国外先进技术和设备的引进消化（如美国的高效浓密机，双螺旋搅拌浸出槽，日本的马尔斯泵，带式过滤机等），使我国黄金生产在装备水平和技术水平上又有了进一步的提高，同时也促进了我国黄金生产设备向高效、节能、大型化、自动化方向发展。在硫脲提金、硫代硫酸盐提金，预氧化细菌浸出，加压催化浸出，树脂吸附等新工艺的科学研究方面，近年来也有新的进展。1979年长春黄金研究所进行硫脲提金试验获得成功，并于1984年在广西龙水矿建成一座日处理浮选金精矿10～20t的硫脲提金车间（1987年通过部级鉴定）。其他工艺虽处于试验研究阶段和正准备建厂投产，足以说明我国提金技术已发展到一个新的水平。

（五）金的冶炼与回收

黄金冶炼是黄金生产中最后一道工序，其产品为成品金。冶炼有粗炼和精炼之分。精粗炼产品为合金（俗称合质金），我国黄金矿山就地产金多为合质金，直接交售给银行。黄金富矿块和各种金精矿运往有色冶炼厂加工提炼成品金（俗称含量金）。建国40年来，黄金冶炼和综合回收发展较快，冶炼技术和工艺装备水平不断提高，冶炼成本日益降低，促进了黄金生产的发展。

急！！！！英文的选矿论文 200分有追加

　　因为字数超过一万字了 所以中文里稍微删减了一点 反正你是写英文的对吧 只看下面英文就行了

　　关于磁电选矿相关应用的论文

　　根据矿石中不同矿物的物理、化学性质，把矿石破碎磨细以后，采用重选法、浮选法、磁选法、电选法等，将有用矿物与脉石矿物分开，并使各种共生的有用矿物尽可能相互分离，除去或降低有害杂质，以获得冶炼或其他工业所需原料的过程。关于磁选设备的进展，已有若
　　别，在物料中加
　　选矿使有用组分富集，减少冶炼或其他加工过程中的燃料、运输等的消耗，使低品位的贫矿石能得到经济利用。选矿试验所得数据，是矿床评价及建厂设计的主要依据。
　　从脉石中有时从其他矿物中分选出金属矿物或有价值的别种矿物的机械加工方法.

　　With regard to the application of magnetic beneficiation related papers

　　According to the different mineral ores physical, chemical nature of the ore broken ground, the use of re-election law, flotation, magnetic separation method, electricity election law, will be useful minerals and gangue mineral separately, and a variety of symbiotic useful minerals as far as possible, separate, remove or reduce harmful impurities in order to obtain smelting or other industrial raw materials needed to process. With regard to the progress of magnetic separation equipment, are already a number of specialized assessment
　　Reference 〔 'a 41, here only collected on a magnetic separation and information
　　Comprehensive comments.
　　1.1 weak magnetic characteristics of the progress of low intensity magnetic separation is to use
　　High-performance chin iron boron magnets to create a higher field-strength magnetic drum
　　Election machine, drum magnetic separator and pre-selection of large chunk magnetite
　　Stone, the development is conducive to improve the concentrate grade of weak magnetic separator.
　　Chin iron boron magnets (Nd: Fel knife) is the largest energy product can be
　　Tatsu 3.18X10 "(T A / m), about drilling alloy shirt
　　(SmCo.) Maximum energy product (1.59X10 "T A / m) of
　　z-fold [51, silver ferrite (Sro.6Fe20,) the largest energy product
　　(0.326X105T A / m) 10 times. Therefore, the use of
　　Chin-Fe-B Magnetic Separator line easy to raise the field strength and performance.
　　Germany, for example, with hinge rod iron boron permanent magnet developed 'Permos'
　　Drum magnetic separator magnetic induction of up to 0.4 ~ 0.5T,
　　Materials can be used wet-dry election or an election can also be more ideal
　　Strong magnetic separator used to remove material to a strong magnetic material
　　Quality 〔6 '. British Boxmag - Rapid Rail Limited with hinge
　　Boron magnets developed 'Magnadrum' Drum Separator
　　Magnetic field up to 0.3 ~ 0.4T, for sorting industrial minerals
　　And abrasive powder 〔 'J. As equipment such as large-scale examples, I
　　State Institute of Ma On Shan mine CTDG1210 following the development of large
　　Diameter magnetic separator, he developed a greater CTDGIS16 type
　　Diameter of the magnetic separator [3], the use of money-Fe-B magnetic system, cylinder surface-ping
　　Both the magnetic field up to 0.4T, for sorting large magnetite
　　Shek. Anshan Black Design and Research Institute of Mining and Metallurgy Shandong Zhang
　　家洼cooperation in the development of iron ore a price 1400mmx1600
　　mm electromagnetic water-cooled magnetic pulley 【.〕, the average magnetic field for the cylinder surface
　　0.24T, handling capacity up to 200t / h, used for pre-selection
　　One of the magnetite 350mm stone, eight months from the original 667,000 t
　　Excluding iron ore 11.97% of the 75,000 t tailings, a total increase
　　Economic benefits of 534,200 yuan. In order to improve the sorting equipment
　　The effect of the comprehensive utilization of mineral emei Institute conventional magnetic separation
　　Trough improve magnetic 〔a re-election machine,〕 its groove from the upper body cone
　　Cylindrical-shaped change, permanent magnetic ferrite by the lower part of Round Tower
　　Shape changed to the upper part of the overall magnetic lines scattered formation of multi-storey circular magnetic system,
　　Field strength distribution of 12 ~ 0kA / m, and equipped with the concentration of self -
　　Control system can be sub-constituency pulp concentration of control in 30% ~
　　Between 35 percent, the device in the application of Shougang Qian'an Iron effect
　　Fruit is: with the improvement of processes, improved sorting tablets
　　Degrees, with the previous fine sieve fine grinding process compared to that in mill
　　Capacity, concentrate grade and iron recovery under the same conditions,
　　Increased the production capacity of 27.66%. This equipment has been developed
　　For the price 300,600,1500,1800,2500 mm Series
　　Products. In order to improve the concentrate grade, Beijing Mining and Metallurgical Research total
　　Hospital developed a Bk a drum magnetic field more than 1021
　　〔Kawasaki machine. It adopted a very open 7 magnetic lines and downstream type election
　　Box, fill in the election together with me in Central and exclusive premium coarse tailings,
　　Feeder terminal located in the overflow weir and exclusive fine-grained tailings, so that shipped with the tube
　　Line of magnetic material has always been the reverse flow of clean
　　Achieve the purpose of concentrate grade. The aircraft in Nanfen Iron Mine
　　Concentrator industrial test results show that with the price 105Ommx
　　21OOmm half compared to current-type magnetic separator, a high concentrate grade
　　2.04 percent, sorting efficiency 10.28%, while the magnetic iron back
　　Low yield of only 0.19 intestine.
　　It is worth noting that the former Soviet Union to study electrochemical
　　Law regulating the process of strengthening the magnetic 'Kawasaki. Research in the laboratory do
　　Set of refractory ores and oxide ores, the first paragraph of the low intensity magnetic separation
　　Before using the electrode of the role of the most promising, concentrate grade will be provided as
　　1.1% ~ 1,4%, iron recovery rate of 4.5 percent raise, 6.4
　　%, Weak magnetic separation tailings in strong magnetic regulated before, iron
　　And improve the recovery rate of l%, 2.4%. Easy selection of ore,
　　Polarization effect, the first and the second paragraph of the magnetic iron recovery
　　Rates were increased by only 0.2%, 2.8% and 0.1% ~ 2
　　Called. It is believed that the effect is due to the different nature of the ore, magnetic
　　Of different intensity and mineral composition. Also as a result of ore oxygen
　　Substances fixed potential value and exchange current value and restore the cathode
　　Response to the current limit of different degrees.
　　1.2 Strong magnetic strong magnetic equipment were limited mainly to
　　Permanent magnet and electromagnetic roller or belt strong magnetic separator. Britain
　　Rapid Ltd. BOxmag with a hinge iron boron permanent magnet system
　　Creating a 'Magnaroll' Roll Magnetic Separator [ '〕, including the roll diameter
　　Gong Gong 75mm and 100mm in two specifications, respectively, for the Office
　　The rationale for fine-grained and coarse-grained materials. It is expected to pass an area of the magnetic field
　　Often for the 0.9 ~ 1.0T, and loop generated by the high gradient,
　　Sorting performance roller magnetic induction machine is superior, the typical application
　　Including the purification of silica sand and feldspar, improve the quality and Tao Andalusite
　　Fine porcelain material dry iron. The former Soviet Union developed a rotating magnetic
　　Field Separator roller 〔 ',,, also known as electric sorting device. The
　　Main loser is expected by the belt and with the following configuration and with parallel
　　Constitute a permanent magnet roll. Magnetic roller by the permanent magnet composed of three parts, in
　　Permanent magnet poles of the Ministry of Law and roll to the vertical axis, before and after the permanent magnet
　　Body of law to the magnetic axis and roll into a 45 "angle, forming the same level
　　Face in three directions of the magnetic field, magnetic field for the roll surface 0.45T. Points
　　Electoral principle is the use of non-magnetic conductive particles in rotating magnetic roller
　　Rotating magnetic field generated by the driving force for transforming the role of pay and non-derivative
　　Xinhua particle separation of aircraft being used for non-ferrous metal processing residue from
　　Recovery of scrap and waste aluminum, copper and other metal particles, conductor production
　　Purity and recovery of goods are up more than 94 percent. China's Ma
　　Hill Mining Research Institute, following the development of Cs-1-type roller magnetic separator
　　After the development of a Cs-2 electromagnetic induction strong magnetic roller
　　Machine 〔''], the roll diameter and effective length of 380mm were smart
　　And 1468mm, parallel twin-roll configuration, with a total of four sub-election,
　　Magnetic field can be between 0.4 ~ 1.78T regulation, excitation, Chuan
　　Actin and were air-cooled power 4.23kw, 13xZkw and
　　0.09 justice Zkw. The aircraft used in Meishan Iron sorting 12 ~
　　Chek Ling ZMM one of the indicators of iron ore is iron ore
　　30.40%, the concentrate grade and recoveries were
　　44.05% and 78.75%, a single-year cost-effective equipment
　　For 630,000 yuan. With different roller magnetic separator. Ferromagnetism with teeth
　　Board or the ball wet media as a result of strong magnetic separator structure is complicated,
　　High cost, coupled with the type of large development remains is to promote
　　Applications and improve and perfect. SHP a strong magnetic separator 2000
　　In Qidashan Iron Ore has been applied 〔'' ', SQC-6 -
　　2770-type strong magnetic separator in Masteel satisfied people Gushan Iron Mine production flow
　　Cheng, Gong-1500 Shuangli Central strong magnetic separator further in Kunming Steel
　　By the popularization and application of 〔'5] SHP-keung, a 3200-type magnetic separator
　　The improvements include 〔'']: magnetic angle from 83 "to 70., Magnetizing
　　Coil replaced by the air-cooled, such as oil-cooling. Rather meaningful is that Queensland
　　Steel plate medium level of tooth ring magnetic separator and the ball vertical ring magnetic media
　　Machine with the same test sample were compared [1 '〕, the results of table
　　That the tooth plate flat ring of iron concentrate grade and recoveries were
　　About 4% and 8%, but the vertical ring-type magnetic properties as a result of the reverse flushing
　　Material, which is not easy to plug for the screening, the following rough, rinse water
　　Pressure and lack of strict water quality requirements, more reliable operation.
　　1.3 HGMS in the magnetic field of high gradient magnetic
　　Study of the election is still occupies an important position, and made significant Jin
　　Exhibition. Svoboda described a new type of high gradient magnetic separator
　　I''〕 plane, the aircraft using short-term water-cooled magnetic coil system, the magnetic field for
　　1.ZT, input power 110kw, from South Africa University of the
　　Witwatersrand gold and uranium tailings recovery, capacity 30t / h. Former
　　The Soviet Union the new joint company克里沃罗格selection and black metal
　　Beneficiation Research Institute developed a 600-type 3KM small magnetic
　　Sorting machine 〔 'Lu'. Kai loaded aircraft using electromagnetic magnetic lines and mesh
　　135 ~ x51 ~ punching screen for sorting media magnetic induction for the 0.5T, processing capacity of up to 30Ot / h, for
　　Enterovirus 95 to deal with a fineness of 0.045 magic. N edge of the iron oxide stone
　　Rock. Copper-rich Zambia's high gradient magnetic separator to
　　To the attention recently with the background magnetic field 1.3T, sorting cans foot
　　Inch 23mmx32mmx104mm (effective volume 42ml,
　　Filling 5%[xss_clean_space]50 ~ 10, that is, steel wool m high horizontal magnetic field gradient
　　Magnetic devices, to 5 ~ 38 al m ore of copper concentrate and made
　　Experimental research on t ',', in the feed flow rate of 7cm / s and cleaning velocity
　　14cm / s under the conditions of separation twice before a magnetic products
　　Chalcopyrite and bornite content from 72 to 86 percent called back
　　The yield was 82%; after a magnetic products, copper content
　　From 16%
　　.
　　Increased to 44 percent, and the recovery was 72 enterovirus. In China,
　　HGMS who has been cross-industrial applications period, workers from China and South Africa
　　Industry, universities and Ganzhou, Jiangxi Institute of cooperation in the development of nonferrous metallurgy
　　The SLON a 1000 vertical ring pulsating high gradient magnetic separator has been
　　The development of a r500 type SLON 〔 '. ', Its diameter by sorting
　　1ooomm to 150omm, mail handling capacity t / h to
　　30t / h, and structural improvements, performance has increased, the first
　　Taiwan SLON a 1500-type magnetic separator installed in 1989 regardless
　　Mountain iron ore, to deal with slime and strong magnetic separation tailings, such as fine-grained Refractory
　　Mixed materials, the original estimated annual economic benefit is 1.06 million yuan'''',
　　Inter reached 1.08 million yuan. Passed technical appraisal in 1990 after
　　The mine has ordered a 1500-type SLON a pulsating high ladder
　　Separator degrees. The past two years, also iron ore and copper Gongchangling
　　Copper applications were recorded in the five and a one SLON
　　1500 vertical ring pulsating high gradient magnetic separator. On the pulse of high-Ossetia
　　Magnetic principle degrees were also made to further explore 〔 "]. Zhongnan Engineering
　　Industry University of Pangushan Tungsten fine mud of pulsating high gradient magnetic separator test
　　A post-mortem studies also received a good indicator of 'Chuan: containing the WO30.74%
　　Tungsten fine mud at the right time under the conditions of separation, to be with WO3
　　Volume of 17.90 percent and 73.78 percent recovery rate of Scheelite; and non -
　　Pulsating high gradient magnetic separator compared to the high concentrate grade 13.99%,
　　The recovery rate was only 1.09 percent lower. By the Central South University and aldehyde hills
　　Municipal Science and Technology Development Center, developed in cooperation CL Kazunori 500mm
　　Vibration cycle high gradient magnetic separator''〔 "to fill China's high
　　Ridge soil HGMS blank. It's tank tracks and well-differentiated
　　Do not for 500mm and 300mm, the magnetic field up to ZT, power consumption
　　About 220kw, handling about Zt / h. Industrial tests showed that
　　It's exciting and good cooling performance, can effectively remove high
　　Ridge soil micro-paramagnetic iron particles, a significant increase in high -
　　Ridge soil and into a white porcelain, can produce better economic and social
　　Effectiveness.
　　On the high gradient magnetic separation theory, since 1973
　　Watson made a number of magnetic particle collector concept 〔25 'have been
　　Established a fairly complete theory of magnetic collector. Recently,
　　Svoboda, who according to the energy point of view to explore the high gradient
　　New theory of magnetic collector 〔26]. In his view, the paramagnetic particles in
　　High gradient magnetic field and magnetic wire trap with a collision with
　　Some of the overall role in a London for the role of van der Waals energy, double -
　　Layer energy, with an average energy and shear stress on the particles Zuogong
　　And of and derived by medium particle collector wire radius
　　(Limited to particle size) and particle magnetization coefficient, strong magnetic field
　　Degrees, medium wire magnetization and radius, fluid velocity and density
　　Degrees and the viscous coefficient of the relationship.
　　1.4 superconducting magnetic superconducting magnetic separation has been into the large-scale chemical
　　Industry application period. Eriez Magnetic company, following the United States in 1986
　　Will be re-25 leaves, a diameter of 2134mm Tank superconducting magnetic separator
　　J. M. Huber Corporation for kaolin processing plant purification of high -
　　Ling soil after less than a year, the same company also ordered a
　　Re-250t, the diameter of 3048 blade n Magic a similar superconducting high gradient
　　Separator 〔Sichuan, when the aircraft is being created, he ordered
　　Third such equipment, according to plan was the first quarter of 1990
　　Degrees installation operation. This is the world's largest superconducting magnetic separation
　　Machines, superconducting magnet with a Nb叭Wirewound system, liquid helium cooling
　　To a 269 ℃, only the beginning of each cycle supply excitation
　　Current, in 60 seconds, zero magnetic field can be increased to ZT, Ran
　　After having been able to maintain foreign to ZT magnetic field, weeks at the end of clearance
　　Closed, the magnets' return 'of power is about to start when the' through to '
　　Half power. The cost of superconducting magnetic than ordinary high gradient magnetic
　　Slightly more elections, the second piece of equipment production costs than the first
　　Taiwan slightly more. Germany KHD Humboldt has韦达格
　　Will be a superconducting Descos sold Drum Separator Turkey
　　Its 〔:'3, used to a weak magnetic serpentine gangue and magnesium
　　Mineral separation, ore particle size of 100 ~ 4 magic n magic. , Containing about 5102
　　20%, FeZ034 intestines, including stem-election once was 510:1.5
　　% And Fe: O, 0.3% of magnesite concentrate rough. Aircraft
　　Specifications for the price 120OmmxI500mm, the magnetic field up to 3.2
　　T, the handling capacity of 10 belly / h, power consumption is about 1.skw h / t,
　　Is one of the world's first for the coarse-grained superconducting magnetic separation
　　Machine. Now expect the 'high temperature' superconductors to develop third-generation super -
　　Magnetic sorting machine "'91.
　　2 electric election
　　Kelly and Spottiswood three papers with a comprehensive
　　Review of the theory of separation. The first review of the basis of principle,
　　Including electrostatics; particle characteristics, namely, particle conductivity
　　(Band theory, electron capture and other forms of electrical conductivity),
　　The surface of semiconductor electronics in nature: particles or metal contacts
　　The equivalent circuit, fluid particle motion. The second assessment
　　Describes the measurement of electrical particles and particle charge mechanism. Xinhua
　　Electric field measurement, including measurement, Dutch power measurement, contact charge
　　Cumulative volume measurement and conductivity measurement. Dutch electrical particles rationale package
　　Including corona charging, induction charging, friction charge, charge rate,
　　Coehn law. The third review of the practice of electrostatic beneficiation,
　　Including electrostatic concentrator theoretical analysis (stress analysis), Static
　　Xinhua concentrator analysis of the experience, equipment parameters, sorting circuit,
　　Three papers related to the literature 95. Xinhua election on I:. Arts and
　　There are some theoretical research reports. Additives have been used abroad
　　A large amount of friction method charge at KCI and NaCI
　　From. The Act the use of KCI and NaCI friction charged the difference
　　Do not, in the amount of materials in adding additives. So that the mobile
　　Layer belt during transport friction charged, and then sorting machine
　　KCI in a concentrate, KCI up to 92% concentrate grade, recovery
　　Rate of 50%. A.L. Shalom and others discussed the non-all
　　Uniform electric field separation of the exchange of technology for liquid and gas media article
　　Pieces under the sorting mechanism "in Sichuan, the establishment of electric field strength, the Netherlands
　　Electricity and Coulomb force and the ratio of inertial force of expression.
　　Dressing to make a useful component enrichment, reducing smelting or other processing of fuel, transport and so on consumption, so that the poor low-grade ore will be economic use. Beneficiation test of the data is the deposit rating and the main basis for plant design.
　　From the gangue minerals are sometimes separated from other selected metal minerals or other valuable minerals machining methods.

选矿方面的论文要发表的核心期刊有那些

刊名： 煤炭学报
主办： 中国煤炭学会 周期： 月刊 出版地：北京市 ISSN 0253-9993 CN 11-2190/TD 2004版核心期刊
刊名： 中国矿业大学学报
主办： 中国矿业大学 周期： 双月 ISSN 1000-1964 CN 32-1152/TD 邮发代号 28-73 2004版核心期刊
刊名： 金属矿山
主办： 马鞍山矿山研究院;中国金属学会
周期： 月刊 ISSN 1001-1250 CN 34-1055/TD 邮发代号 26-139 2004版核心期刊
刊名： 采矿与安全工程学报
主办： 煤炭工业矿山压力情报中心站
周期： 季刊 ISSN 1673-3363 CN 32-1760/TD 2004版核心期刊
刊名： 矿山机械
主办： 洛阳矿山机械工程设计研究院
周期： 月刊 ISSN 1001-3954 CN 41-1138/TD 邮发代号 36-21 2004版核心期刊
刊名： 矿业安全与环保
主办： 煤炭科学研究院重庆分院;国家煤矿安全技术工程研究中心
周期： 双月 ISSN 1008-4495 CN 50-1062/TD 邮发代号 78-35 2004版核心期刊
刊名： 中国矿业
主办： 中国矿业联合会
周期： 月刊 ISSN 1004-4051 CN 11-3033/TD 邮发代号 2-566 2004版核心期刊
刊名： 矿冶工程
主办： 长沙矿冶研究院;中国金属学会。周期： 双月 ISSN 0253-6099 CN 43-1104/TD 邮发代号 42-58 2004版核心期刊
刊名： 矿业研究与开发
主办： 中国有色金属学会;长沙矿山研究院
周期： 双月 ISSN 1005-2763 CN 43-1215/TD 邮发代号 42-176 2004版核心期刊
有好多，先写这些看你能用上不？