风化淋积型石英、长石、高岭土矿选矿分离及综合利用初探

本研究采用选择性擦洗、选择性磨矿，辅之以筛分（分极）、破碎、脱泥、洗涤，有效地从风化淋积型矿石中分选出产率为３２％，ＳｉＯ２品位》９７％、ＴＦｅ２Ｏ３０．０８％－０．１０％，回收率４１．９４％的石英精矿；产率为３２．８６％，Ｋ２Ｏ９．５０％，回收率６５．７８％的钾长石精矿；产率为２５．８６％，Ａｌ２Ｏ３３１．７２％，回收率５２．３％的高岭土精矿。古英精矿深加工成硅酸钠（水玻璃），硅酸钠再深加工成无     

硅质岩石磷酸盐的浮选柱浮选

采用浮选柱浮选试验的因子设计来了解浮选柱参数的主效应和交互效应。试验中空气流速、冲洗水流速和泡沫深度在两种范围内变化。结果分析表明，提高空气流速对精矿品位有不利影响，增加泡沫高度可提高精矿品位。空气流速和冲洗水之间以及空气流速和泡沫高度之间的交互效应对精矿品位有显著影响。结果表明，原矿品位１２．７６％Ｐ２Ｏ５的矿石经一段浮选柱浮选可得到Ｐ２Ｏ５３１％（ＳｉＯ２１０．６％）的精矿，回收率为９４％。这     

铁矿石选矿厂尾矿的再选

在土耳其迪夫里伊铁矿山所生产的磁铁矿石，在选矿厂进行选矿，其综合尾矿倒进恰尔特河。为了回收有用金属（Cu、Ni、Co、Fe3O4）和减少环境污染，已进行实验室和半工业试验。根据试验结果，已设计出尾矿处理流程；并对一个能力为33万t／a的选矿厂进行了初步可行性研究。一个年产40920t磁铁矿精矿（精矿含铁64．2％）、1074．5tCoS－NiS精矿（Ni回收率为29．8％，Co回收率为67．1％）和1747t硫化铜（回收率为71．1％）的选矿厂已完成设计。     

难选铜锌铁多金属硫化矿两步浮选法的研究

某铜锌铁多金属硫化矿含有较多的次生硫化铜（高达40％),受采场酸性废水的影响，浮选实践证明闪锌矿难以抑制，分选指标不高。根据浮选基础工艺和工艺矿物学原理，结合研究对象，认为黄酮矿存在两部位粒子（1部分为天然可浮性好的粒子，另1部分为可浮选差的粒子），闪锌矿也存在两部分粒子（1部分为非氰抑制剂能报制另1部分可为浮性差的粒子），闪锌矿也存在两部分粒子（1部分为非氰抑制剂能抑制的粒子，另1部分为非氰抑制剂难抑制的粒子）。由此导出两步浮选法的构想，提出铜、锌均两步浮选法。文中还阐述了用两步铜锌浮选法处理这种难选矿石的实验室研究和工业实践，结果令人满意。工业试验获得精矿含铜19．3％，含锌2．5％，铜回收率84．6％；锌精矿含锌51．7％，回收率高达80．7％；硫精矿含硫34．8％，回收率80．2％的好指标。伴生金的回收率由原来的26％提高到38％。此外，还介绍了混合精矿在非氰抑制剂存在下进行较长时间搅拌的措施对其分离十分有利。     

涞水金红石选矿试验研究

正概述涞水金红石矿属原生矿，矿石粒度细是其主要持证，—10μm占22．28％，且含泥量大，细泥的干扰严重影响着最终产品的技术指标。本试验研究，选用重选一浮选一介电射频联合流程，最终精矿品位（TiO2）85．64％，回收率22．47％（开路）；次精矿品位80．22％，回收率1753％。虽然精矿品位达到了技术指标，但是回收率偏低。随着介电射频选矿工艺的改进，将会得到满意的结果。2深水金红石矿石性质及特征2．1光谱分析（见表1）22原矿化学成分化学分析结果为（％）：TIO。3·87、FCZO38．56、SIO246sl、A12（）s1862、CS（）O．99、M…     

黑白钨细泥选矿新工艺的研究

江西某矿钨细泥（70％-30μm）的WO2在白钨矿、黑钨矿和钨华中的分布率分别为45．30％，53．01％，1.69％．采用Na2CO3、改性Na2SiO3和Pb（NO3）2作调整剂，TA-4作捕收剂对黑白钨矿进行粗选，然后加温精选分离，其泡沫经酸浸获得白钨精矿．加温精选尾矿经摇床选别获得黑钨精矿．试验结果表明，Na2CO3的合理添加直接影响黑白钨混合浮选的选别效果；采用新型选钨捕收剂TA-4是提高钨选别指标的关键。精选中加入NTA有利于白钨矿与黑钨矿的分离．当钨细泥给矿品位（WO3）为0．2％时。获得品位59．55％、回收率47．21％的白钨精矿，品位36．62％、回收率19．53％的黑钨精矿，钨精矿的平均品位为50．60％、总回收率为66．74％．     

含砷硫难处理金矿加CaO焙烧预处理研究

本文用热分析法研究了ＣａＯ用量α（ＣａＯ与金精矿的重量比）为０．３３～１．３３范围内加石灰焙烧金精矿的焙烧过程。研究发现，当α＝１．０时，砷、硫固定率可达８８％，该法可有效地消除砷和硫对环境的污染。对含高砷、高硫的金精矿加ＣａＯ焙烧时建议采用控制气氛和温度的两段焙烧。对得到的焙砂进行氰化，金的浸出率为８８％左右，而未经焙烧预处理的金精矿直接浸出率仅为２５．５％。     

某高品位硫精矿选矿试验研究

为了获得舍硫48％以上的高品级硫精矿，进行了选矿小型试验和工业试验研究。小型试验和工业试验结果证明：从硫品位为28％左右的原矿中．经过两粗两扫两精的选别，可获得含硫为49．96％和46．07％的两种精矿产品，回收率分别为36．90％和54．03％。     

金狮岭铅锌矿选矿工艺的研究

金狮岭有色金属矿属富铅，富硫（Ｐｂ１３．３５％，Ｚｎ４．５８％，Ｓ２９．８３％）和铅锌呈相细不均匀嵌布状态存在的铅锌矿石，选矿工艺采用阶段磨矿－优先等可浮流程获得铅精矿品位为５８．８０％，回收率８１．１７％，锌精矿品位为４１．３９％，回收率５５．０８％的小型闭路试验结果。     

会理难选铅锌矿石电位调控抑锌浮铅优先浮选新工艺

研究会理锌矿难选铅锌硫化矿电位调控抑锌浮铅优先浮选分离新工艺。用石灰作矿浆pH和电位的调整剂与稳定剂，在矿浆pH为11．88～12．21，矿浆电位在-252～-272mV的条件下，以乙硫氮（N，N-二乙基二硫代氨基甲酸钠）作铅矿物的捕收剂，（ZnSO4＋Na2SO3）组合药剂强化抑制锌矿物等实现铅锌优先浮选分离，取得较好的生产指标。铅精矿Pb品位65．21％。回收率52．30％；锌精矿Zn品位56．48％，回收率84．85％。与原生产工艺相比，铅精矿铅品位与回收率分别提高了13．27％和5．76％，锌精矿锌的品位与回收率分别提高了0．28％和2．28％，选矿药剂成本降低约2元／t-矿，每年可产生经济效益约1234万元。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

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     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel