普朗铜矿采矿盈利模式分析

普朗铜矿位于迪庆高原,目前矿山处于基建期,为了更好的建设普朗铜矿,矿山提出了采用合同制采矿代替自营方式进行矿山开采的观点,文章在确定合同制采矿范围、设备购置及管理模式、采矿管理方式的情况下,分析了自营和合同制采矿的价格,并对两种方式进行了经济分析,论证了普朗铜矿合同制采矿在技术上可行、在经济上合理。     

普朗铜矿自然崩落采矿法生产矿量管理研究

普朗铜矿是新建矿山,采用自然崩落法采矿,生产规模大,开采工艺复杂,生产矿量管理没有标准。为实现持续生产,提高矿产资源储量管理水平,按照有色金属矿山生产矿量管理规定,结合普朗铜矿地质特征、采矿工艺特点,建立三维地质模型,并对采掘工程划分、地质工作程度要求、合理保有期核定等问题进行了综合研究,制定了普朗铜矿生产矿量管理办法,预计矿山2020年可达产。     

普朗铜矿生产地质取样方法

普朗铜矿是近几年发现的超大型斑岩铜矿,采用自然崩落法采矿.为提高生产效率,在矿床地质特征基础上,结合采矿工艺特点,应用X荧光法、刻槽法、方格法、拣块法等不同取样方法,通过样品化验品位误差分析,进行了生产地质取样方法对比研究.在此基础上,综合取样工作效率和经济效益,得出各采样方法的优缺点和适应范围,提出适合普朗铜矿不同情境下生产地质取样方法,以更好地为矿山生产服务.     

DIMINE软件在普朗铜矿地质建模中的应用

以普朗铜矿的岩体、矿体和地表为研究对象,研究了三维建模技术方案,根据搜集的矿山建模资料,应用DIMINE三维矿业软件系统建立了普朗铜矿的地表、岩体以及矿体的三维实体模型,并运用地质统计学法对普朗铜矿体进行品位估值,获得了矿体的储量。     

普朗铜矿井下聚矿槽拉槽爆破问题分析及处理

普朗铜矿在自然崩落法采矿聚矿槽爆破过程中,经常会产生悬顶、周边炮孔炸药没有完全起爆甚至有毫秒管雷管未起爆等现象,导致聚矿槽爆破不合格,严重影响安全生产,在分析其问题产生原因的基础上,有针对性提出了解决问题的措施,确保了矿山正常安全生产。     

大红山矿业公司的合同采矿制及存在的问题

大红山矿业公司自2003年在全国冶金矿山行业率先推行采矿合同制以来,取得了显著的成效。2007年并下400万t／a采矿工程也采用了合同制采矿。合同制采矿实行采矿合同卖价付款的结算方式,即承包方采到矿石后以价售出获得报酬和利润。大红山矿业推行合同采矿制,提高了社会资源的配置,有效提高企业的效益和抗风险能力,降低了采矿成本。     

露天采矿生产承包的利弊

矿山运行是否采用承包还是自营的方式对矿山的发展和项目的投资收益起着重大作用.目前国内外很多矿山采用采矿承包模式,本文将探讨采矿承包的利弊关系.     

普朗铜矿自然崩落法采矿底部结构稳定性研究

本文通过对国内最大的自然崩落法采矿基地——普朗铜矿的进行地应力反演,并对矿体进行岩石力学特征评价,并对前期运营过程中底部结构的所受的应力状态进行了研究,以及对矿区采场中在拉底及出矿过程中,巷道的稳定性特征及破坏规律进行了对比分析,并且针对上述规律提出了普朗铜矿前期底部结构稳定性防护措施,对采矿实践有一定的指导作用。     

普朗铜矿地压综合监测数据分析与研究

普朗铜矿在运用自然崩落法进行拉底推进和出矿作业过程中,在断层构造影响下,面临底部结构围岩破坏变形和地表不均匀沉降等问题。因此,普朗铜矿采用微震、应力和三维激光扫描综合监测系统,对开采过程中矿山地压状况进行监测和分析。结果表明：西沿拉底推进对首采区岩体稳定性影响较大;采区南部底部结构应力变化相对频繁;地表塌陷区东部区域与沟底核心区域沉降速度最快。以上研究结果为矿山调整拉底、出矿和二次支护计划提供了参考依据,起到了良好效果。     

琅琊山铜矿地下开采空间开发利用前景分析

琅琊山铜矿位于安徽省滁州市城区,与琅琊山风景区附近,地理位置优越。该矿山矿床为矽卡岩接触交代型富铜矿床,矿体顶板及围岩以石英闪长玢岩为主,局部为寒武系碳酸盐岩;围岩工程力学性质及稳定性良好,地下水贫乏;地下采矿遗留有大面积的开采空间。通过对琅琊山铜矿赋存的自然背景条件、地下采矿方式、地下遗留的开采区面积来分析该矿山地下开采空间可开发利用前景,提出了未来可供选择的利用方式为建设矿山公园、人防工程、地下物资储备库等,以此变废为宝,提升地下采矿的社会经济效益。     

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     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2014 second batch of rare earth quota released

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2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586