梅山铁矿加大结构参数过渡分段的研究

为实现梅山铁矿开采结构参数从现有的 ( 1 0～ 1 3)m× 1 0m合理过渡到 1 5m× 1 5m ,对影响过渡分段采矿损失、贫化指标的原因进行了分析 ,采用实验室物理模拟、现场定量测定等手段 ,找出了过渡阶段不同分段矿石流动规则 ,实行了采用截止品位放矿的放矿管理办法 ,在生产中获得成功应用。     

KYF—50浮选机工业试验及其应用前景

由北京矿冶研究总院设计、金川公司制造的我国目前最大的浮选机———KYF -50浮选机在金川公司铜镍选矿厂进行了工业试验。用 2台KYF— 50浮选机先后取代磨浮车间5号生产系统一段粗选前 5台BS—K— 1 6浮选机及一台3m× 3m搅拌槽和二段扫选前 5台BS—K— 1 6浮选机对比试验 ,试验取得成功。两台KYF— 50浮选机一段粗选作业选别指标与原流程 5台BS—K— 1 6浮选机及一台 2 0m3 搅拌槽相比 ,精矿品位镍提高 2 .3 % ,铜提高 1 .4 % ,氧化镁降低 4 .1 % ;作业回收率镍提高 0 .1 % ,铜提高 2 .3 % ;代替二段一次扫选原流程 5台BS—K— 1 6浮选机 ,指标也有所提高。设备性能和液位控制达到设计要求。     

梅山无底柱分段崩落法加大结构参数的研究获奖

由中国钢铁工业协会、中国金属学会评出的 2 0 0 0～ 2 0 0 1年度的冶金科学技术奖近日揭晓 ,“梅山无底柱分段崩落法加大结构参数的研究”荣获冶金科技一等奖。该项目是国家“八五”重点科研攻关项目 ,由上海梅山矿业公司、马鞍山矿山研究院、青岛建筑工程学院和鞍山冶金设计研究院共同开发研究。 1 991年由原国家冶金工业部批准立项 ,采矿结构参数由原来的 1 0 m× 1 0 m扩大到1 5m× 1 5m进行试验研究。在实验室物理模拟、计算机仿真模拟试验成功后 ,最后在现场进行的工业试验也获得成功。该方法 1 998年在梅山矿业公司二期采矿工程中投…     

用浮选法回收细粒炭中的金

美国阿拉斯加州费尔班克斯附近的 FortKnox矿于 1 997年正式投产 ,该矿储量 1 .47亿t,平均含金 0 .85g/ t。日产 3.6万 t矿石 ,实行36 5d/ a工作制度 ,设备利用率达 94%。Fort Knox金矿床位于多相花岗岩中。金赋存于乳白色石英网状脉与充填石英的花岗岩裂隙中 ,金的嵌布粒度通常在 1 0 μm以下。露天矿采出的原矿在采场附近的旋回破碎机中粗碎至 2 0 cm后由胶带运输机送至 0 .9km外选厂的粗矿储矿场。粗矿石由取料机取出后运至一台 1 0 m× 4.5m的半自磨机。半自磨机的+ 1 2 .5mm排矿经一台 2 m圆锥破碎机破碎后返回半自磨机 ,-1 2 .5m粒…     

多金属硫化矿石的分离和综合回收

粤北某多金属硫化矿富含铜、铅、锌、铋、银等有价金属。该矿选矿厂原来的浮选分离指标不好 ,造成资源的很大浪费。小型试验到工业生产表明 ,该种矿石的有用元素可以得到进一步综合利用 ,生产指标平均为铜精矿含铜 2 3 .5 %、银 110 0g/t,铜回收率 85 % ;铅铋混合精矿含铅 5 0 %、铋 2 2 %、银 380 0g/t,铅回收率 92 % ,铋回收率 84.2 % ,银的综合回收率 90 .6 % ;锌精矿品位 5 1.1% ,回收率 92 %。经济效益大为提高     

易武铅锌硫化矿石浮选研究

针对云南易武铅锌硫化矿石进行了浮选试验研究。试验采用优先浮选法 ,获得铅回收率 89.59%、锌回收率 95.91 %的优良指标。采用新型浮选起泡剂 73 0A ,与松醇油相比 ,能使铅精矿的品位提高 5% ,锌精矿回收率提高 2 .3 5% ,增强了铅锌的分选效果。     

提高某铜镍矿石铜镍选矿指标的研究与实践

研究提高某铜镍矿矿石选别指标的方法并应用于工业实践。通过工艺流程改进及应用新药剂组合 ,获得了较好的铜镍矿石的选别指标。镍精矿镍品位和回收率分别由 6 3 3 9%和 85 19%提高到 7 789%和 86 0 0 %。铜精矿铜品位和回收率分别由 2 3 0 4%和 5 9 2 8%提高到 2 4 2 3 %和 82 5 0 %。镍精矿镍铜比由原来的 9 2 0提高到 2 5 8。     

多金属硫化锑矿的综合回收

根据矿石性质 ,对多金属硫化锑矿中的有价金属进行了综合回收试验。结果表明 ,用部分混合—分离浮选工艺流程 ,能获得锑品位 5 6.2 7%、锑回收率 77.92 %的锑精矿 ,铅品位 2 6.63 %、铅回收率 61.3 4%、银品位2 5 0 0 g/t、银回收率 68.84%的银铅混合精矿及砷品位 10 .3 1%、砷回收率 83 .0 9%的砷精矿。硫化矿浮选尾矿再用重选—磁选回收钨 ,WO3的品位可由 0 .2 4%提高到 9.2 8% ,回收率达 74.77%。     

梅山铁矿加大出矿设备的研究

结合对梅山矿业有限公司开展的采矿开采结构参数由 15m× 15m进一步扩大到 15m× 2 0m的大结构参数研究 ,从技术、经济上分析了一次崩矿量增大的情况下设备的合理配套问题 ,进行了将出矿铲运机增大到6m3 的论证 ,结果表明 ,增大出矿设备斗容既便于组织生产 ,又有显著的经济效益     

注浆防渗技术在地下溶浸中的应用

介绍寿王坟铜矿上部采空区内存窿矿石地下溶浸注浆防渗试验结果和现场施工效果。试验采场注浆孔总长798 4m ,注浆量 11 3 7L·m- 1 ,注浆压力 1 5～ 2 0MPa,注浆成本 1 0 6元·t- 1 矿 ,注浆后矿体吸水率 0 2 5 9L·min- 1 ·m- 1 ·m- 1H2 O ,渗透系数 0 0 3 0 1m·d- 1 。注浆防渗技术用于解决地下溶浸浸出液渗漏问题是可行的。     

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     

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.     

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.     

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