酒泉某难选红柱石矿选别工艺对比试验研究

针对酒泉某难选红柱石矿开展了球磨和棒磨的磨矿细度对比试验、脱泥粒度试验和碱性与酸性介质浮选工艺对比试验研究。试验结果表明,该红柱石矿适合棒磨磨矿,较优磨矿细度为-0.074mm占85.19%,较优脱泥粒度为20μm,碱性介质浮选工艺的精矿指标较优。在确定碱性介质浮选工艺基础上,试样经过磨矿-脱泥-磁选-1粗8精1扫的闭路流程试验,获得了Al_2O_3品位为52.94%、红柱石回收率为54.10%、红柱石含量为83.88%的精矿。     

某锡矿选矿工艺研究

对某含锡0.86%、含硫2.14%的锡石多金属硫化矿进行了选矿工艺研究。采用混合浮选脱除其中硫化矿物, 然后混合浮选尾矿采用离心机预先抛尾-分级摇床-浮选工艺回收其中的锡, 试验室闭路试验获得锡品位55.63%、回收率61.83%的摇床锡精矿和锡品位29.31%、回收率11.33%的浮选锡精矿, 锡总回收率为73.16%。试验指标较为理想。     

某磁、赤铁矿石选矿工艺优化试验

针对某磁、赤铁矿选矿厂铁精矿品位特别是浮选精矿铁品位、铁回收率低的难题,对其现有阶段磨矿-弱磁-细筛提质-强磁-反浮选流程进行了优化选矿试验研究。试验结果表明：现场因为入选磨矿粒度不够,导致强磁精矿和入浮矿品位偏低,是选别指标差的主要原因,试验最终获得了精矿铁品位为65.19%、回收率为74.74%的良好选别指标。     

康家湾矿深部高硫铅锌矿选矿

针对康家湾高硫铅锌矿常规浮选条件下铅锌精矿品位难以达到预期指标、影响经济效益的难题,通过原矿配矿处理、磨矿细度试验、药剂条件试验,确定最终浮选条件,试验取得了较好的浮选效果,最终开路试验获得指标：铅精矿品位66.56%回收率89.52%,锌精矿品位51.21%,回收率91.50%,解决了高硫对铅锌指标的影响。     

某铅锌氧化矿选矿试验研究

某矿石是一种含铅锌多金属氧化矿,铅锌氧化率分别高达56.30%和93.9%。本次试验采用摇床重选,摇床精矿经再磨-浮选、摇床尾矿直接进入浮选流程。选别流程为依次优先选别硫化铅矿物、铅氧化矿及锌氧化矿,获得了硫化铅精矿产率为7.65%、铅品位为61.00%、铅回收率为43.82%;氧化铅精矿产率10.15%、铅品位51.41%、铅回收率49.00%;氧化锌精矿产率为23.22%、锌品位为45.77%、锌回收率为85.02%的选别指标。     

康家湾矿深部高硫铅锌矿选矿试验研究

针对康家湾高硫铅锌矿常规浮选条件下铅锌精矿品位难以达到预期指标、影响经济效益的难题,通过原矿配矿处理、磨矿细度试验、药剂条件试验,确定最终浮选条件,试验取得了较好的浮选效果,最终开路试验获得指标:铅精矿品位66.56%、回收率89.52%,锌精矿品位51.21%、回收率91.50%,解决了高硫对铅锌指标的影响。     

某铜镍硫化矿浮选脱除滑石的研究

某铜镍硫化矿中存在的滑石及蛇纹石等易浮脉石矿物严重干扰了铜镍矿物的浮选,影响了浮选指标。通过工艺矿物学研究和浮选脱泥试验研究,考察了磨矿细度、起泡剂的种类、pH值和浮选时间对浮选脱泥的影响,通过浮选确定了最佳浮选脱泥条件,并探讨了其原理。浮选脱泥减轻了矿泥对铜镍选别的影响,在保证精矿质量不变的前提下,提高了铜镍精矿的回收率。并在工业试验中得到了验证。     

河南金源浮尾重选精矿尼尔森选矿试验

河南金源公司选矿厂浮选尾矿经螺旋溜槽预选后,溜槽精矿进入摇床进行分选,摇床精矿金品位仅3.5 g/t无法进行单独销售,这部分摇床精矿现阶段返回磨矿车间再磨,导致磨矿浮选作业流程中金属硫化物循环积存,对浮选指标和操作带来一定的影响。为进一步提高金矿物的综合回收率,促进尾矿资源的高效综合利用,进行了尼尔森选矿试验。试验结果表明:螺旋溜槽和摇床精矿经磨矿作业后,使用尼尔森试验机回收效果显著,可进一步提高金矿的资源利用率,为同类矿山实现资源综合利用提供思路及经验借鉴。     

蛇纹石浓度对黄铜矿矿浆流变性和浮选的影响

在蛇纹石-滑石型硫化矿中,脉石矿物蛇纹石因质地软,硬度小,在磨矿过程中易泥化,从而产生大量微细粒蛇纹石。微细粒蛇纹石不仅能影响硫化矿的可浮性,而且在浮选过程中也容易导致矿浆流变性变得更加复杂。为了充分了解蛇纹石对矿浆流变性和矿物浮选行为的影响,采用 DLVO 理论计算、流变性测量、浊度测试和浮选试验的方法进行系列试验。结果表明：蛇纹石质量浓度的升高增大了混合矿矿浆表观黏度值,导致蛇纹石泡沫夹带量增加,黄铜矿浮选速率下降,最终精矿 MgO 含量升高。而这主要由颗粒间的总相互作用力增强导致的：蛇纹石颗粒间的相互吸引力远大于蛇纹石和黄铜矿颗粒间的吸引力,随着蛇纹石质量浓度的升高,矿浆中颗粒总相互凝聚力增强,导致矿浆黏度升高。     

高锡白钨粗精矿常温浮选脱锡

<正> 香花岭锡矿过去采用加温浮选法脱除高锡白钨粗精矿中的锡,回收率低,金属损失大,严重影响了企业的经济效益。为此,1978年改为常温浮选法脱锡,技术经济指标有了显著的提高。(一)粗精矿性质香花岭锡矿所开采的白钨矿矿床属萤石交代型白钨矿矿床。采用一段磨矿-跳汰-摇床重选流程,高锡白钨粗精矿由该流程所得毛精矿经摇床精选-浮选硫化矿得到,含三氧化钨63.24%,锡0.696%,砷0.176%,硫0.65%,氟化钙11.52%,二氧化硅0.92%,碳酸钙17.82%。粒级分析结果见表1。(二)常温浮选工业试验以碳酸钠作调整剂(pH=11),氧化石蜡皂作捕收剂(2公斤/吨),大量的水玻璃作锡石抑制剂,对高锡白钨粗精矿进行脱锡试验。根据高锡白钨粗精矿的粒级组成分为两级浮选,细粒级(-0.3毫米)用3A浮选机浮选白钨矿,     

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     

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.     

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     

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     

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.     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered     

铜熔炼中锍品位对杂质元素分配行为的影响

借助于多相、多成分系统中平衡计算的手段，开发出微量元素砷、锑、铋及伴生元素铅、锌等在铜熔炼中分配行为的计算机模型。利用该模型对铜熔炼过程进行计算机模拟，分析了冰铜品位对砷、锑、铋、铅和锌等杂质元素的分压、活度系数及它们在冰铜、炉渣和气相中分配率的影响，并讨论其热力学分析结果对生产实践的指导意义。     

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