秘鲁某斑岩型含砷铜钼矿工艺矿物学研究

对秘鲁某斑岩型含砷铜钼矿进行了工艺矿物学研究,查明了矿石中砷、铜、钼等元素的赋存状态,丰富了该类型矿石的矿物学资料,并就影响选矿指标的矿物学因素进行了分析。工艺矿物学研究结果表明,该类型矿石的氧化率比较低,铜钼应具有较高的选矿回收率,选别作业时容易获得较理想的选矿指标,但矿石中的砷会在铜精矿中有显著的富集,应该重视砷黝铜矿在选矿流程中的走向,充分利用砷黝铜矿与黄铜矿之间浮游性的微小差异生产高、低砷铜精矿。     

一种难选锡铜共生矿的工艺矿物学研究

本文通过对难选锡铜共生矿样的工艺矿物学研究,采用工艺矿物学所研究的手段,针对矿石的在选矿中不易选别的难度,从矿石的物质组成,锡、铜、铁、硫元素的赋存状态,晶体形态,结晶粒度,元素在空间分布状态作了综合分析,提出了影响该矿体回收率难以提高的工艺矿物学因素,从中帮助选矿工作者找到选别该矿样的最佳选矿工艺流程,最大限度来提高有价金属的回收率。     

西藏玉龙铜矿氧化矿工艺矿物学研究

对西藏玉龙铜矿1号矿体氧化矿进行工艺矿物学研究,查明矿石中铜、钼等元素的赋存状态,并就影响选矿指标的矿物学因素进行分析。研究结果表明,该类型矿石中铜的氧化率较高,加强对氧化铜矿物的浮选回收可以明显提高铜的选矿回收率;矿石中一定量的砷赋存在黝铜矿中,浮选时砷会在铜精矿中富集;钼的硫化物主要是辉钼矿,由于该矿物嵌布粒度较粗,容易浮选回收,但矿石中钼的氧化率也比较高,钼的选矿回收率不会很高。浮选工艺试验过程中应重视对铜氧化矿物的浮选回收及对黏土类易泥化矿物抑制效果的研究工作。     

某高铁型铜硫矿工艺矿物学特征及选矿试验研究

为查明矿石性质对选矿指标的影响,对国外某高铁型铜硫矿采用光学显微镜、物相分析和化学多元素分析等分析测试手段,研究了矿石的矿物组成、主要矿物嵌布特征和主要元素赋存状态等工艺矿物学特征.工艺矿物学研究结果表明,Cu和S为矿石中主要目的元素,品位分别为0.78％和11.12％,伴生元素银品位为7.5 g/t,铜主要赋存于黄铜...     

基于矿石基因的铜选矿回收率预测方法探讨

矿石基因特性是选矿工艺的决定性因素,通过矿石基因研究可以预测有价元素的理论选矿指标。为实现铜硫矿中铜选矿回收率的合理准确预测,从矿石基因的角度,以原矿石工艺矿物学研究结果为基础,建立了一种铜硫矿中铜的选矿回收率预测新方法,且不需要进行选矿试验或测试不同细度磨矿产品中目的矿物单体解离度。研究表明预测结果与实际生产结果相符,可为现场生产提供很好的指导作用。     

新疆某铜钴矿工艺矿物学研究

新疆卡拉盖雷铜钴矿石选矿过程中铜钴不易分离,且铜精矿和钴精矿中砷的含量容易超标。采用多种分析检测手段对该矿进行了详细的工艺矿物学研究。查明矿石中有价元素主要是铜和钴,含量分别为0.84%和0.10%,有害元素砷的含量为0.48%。矿石中铜、钴的氧化率很低,分别为2.38%和0.99%。黄铜矿是矿石中主要的铜矿物,嵌布粒度极不均匀,主要呈细粒产出,分布率为53.45%;其次呈粗、中粒产出,分布率为41.17%;呈微粒产出的黄铜矿分布率为5.38%。矿石中的钴主要以类质同象形式赋存在毒砂、钴毒砂、铁硫砷钴矿、辉砷钴矿系列矿物中,因此在选矿过程中钴和砷的走向相同而难以分离。由于铜钴矿物密切共生,导致铜精矿中砷的含量也易偏高。根据矿石工艺特性,该矿石适宜采用分段磨矿分段选别工艺逐步分离回收铜钴矿物,同时达到抑制铜精矿中砷含量的目的。     

刘益萍云锡集团研究设计院

本文通过对含锡多金属硫化矿体的工艺矿物学研究,对矿石的物质组成、锡、铜、铅、锌的赋存状态、晶体形态、结晶粒度、多元素在空间分布状态作了综合分析,提出了影响含锡多金属硫化矿体中有价元素回收的工艺矿物学因素;从中帮助选矿工作者找到选别该矿样的最佳选矿工艺流程,最大限度来综合利用提高多金属元素的回收率。     

云南某锡、铜、砷、银多金属共生硫化矿工艺矿物学研究

云南某地矿石含锡0.819%、铜0.322%、银62.60μg/g、砷0.74%。采用MLA、X-射线衍射仪、光学显微镜对矿石矿物组成、结晶嵌布粒度、共生关系、金属分布等进行研究,详细论述了该矿石中锡、铜、砷、银有价元素的赋存状态,为采用合理的选别工艺提供了矿物学依据。     

新疆阿舍勒铜矿矿石工艺特征研究

新疆阿舍勒铜矿矿石性质复杂,矿物嵌布粒度细,矿石中除铜、硫外,尚伴生有锌、金、银、砷,这些元素均主要以独立矿物存在。通过矿石中主要元素的赋存状态及相关系数的研究,查明了Cu、Zn、Au、Ag、As的赋存规律,为矿石的开发利用指出了明确的方向。选矿试验证明,矿石中铜、锌的回收均获得了较理想的指标,由于砷的赋存状态和矿物晶体结构所决定,矿石中的砷在选铜的作业中将会在铜精矿中富集,目前用机械选矿方法仍无法进行铜、砷分离。     

内蒙古某多金属矿石中铜铅锌银的赋存状态及影响选矿效果的矿物学因素研究

通过显微镜鉴定、MLA测定、化学分析和扫描电镜分析等多种手段对内蒙古某铜铅锌多金属矿石进行了较详细的工艺矿物学研究,查明了矿石的化学成分、矿物组成及含量、主要矿物的产出形式及嵌布粒度、主要元素的赋存状态,分析了影响铜、铅、锌和银分选效果的主要矿物学因素,为制订合理的选矿工艺流程提供了重要的科学依据。     

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