基于DIMINE软件系统的玉龙铜矿露天开采境界优化研究

露天境界优化是露天矿设计和生产经营管理的重要环节。最终境界优化是一项需要综合考虑矿山资源状况、开采技术条件、矿产品销售价格、矿石开采及处理成本等多因素,实现经济效益最大化的复杂工作。在玉龙铜矿建立的三维地质模型的基础上,以不同于传统境界优化的方法,利用矿业软件DIMINE进行露天境界优化设计,得出了该矿露天开采的最优经济境界,为矿山的开发提供技术方案和投资决策依据。     

基于三维可视化技术的露天境界优化研究

露天境界优化是露天矿设计和生产经营管理的重要环节。最终境界优化是一项需要综合考虑矿山资源状况、开采技术条件、矿产品销售价格、矿石开采及处理成本等多因素,实现经济效益最大化的复杂工作。采用三维可视化技术选择Lerchs-Grossmann优化方法(L-G法)对云南易门铜矿进行露天境界优化研究,通过对露天境界中优化参数和优化方法的探讨,得出了矿山开采优化的露天经济境界,为矿山的开发提供直接技术方案和投资决策依据。通过研究,总结出了露天境界优化过程中应用的主要技术和方法。     

露天开采的境界优化算法研究及应用

露天境界优化是露天矿开采设计和生产过程控制的重要内容。境界优化需要综合考虑矿山资源状况、开采技术条件、矿产品销售价格、矿石开采及处理成本等众多因素,最终实现矿山生产经济效益最大化。在矿床资源三维块段模型的基础上,介绍了浮动圆锥法境界优化的基本原理,并重点讨论了边坡角在空间不同区域发生变化时境界优化的实现方法,以及复杂边坡角条件下露天境界的形成过程。最后,介绍了浮动圆锥法在矿业软件中的应用实例。     

NPV在某多矿床露天境界优化中的运用

露天境界优化是露天开采设计的重要内容,需要综合考虑矿石价格、品位、资源贫化率、选冶回收率、选冶成本、矿山剥离成本、矿山采矿成本以及规模等众多因素.为探讨NPV在某多矿床露天境界优化中的运用,在该矿床资源三维模型的基础上,确定多个矿床边坡参数的最优方案,使资源开采经济效益最大化.     

基于DIMINE软件系统的露天矿境界优化研究

露天境界优化是露天矿设计和生产经营管理的重要环节,而最终境界优化是一项需要综合考虑矿山资源状况、开采技术条件、矿产品销售价格、矿石开采及处理成本等多种因素,实现经济效益最大化的复杂工作。目前,三维可视化矿床模拟技术和露天境界优化方法的完美结合使其工序更为简化,并可获得良好的动态效果。以广西平果铝土矿为研究对象,借助DIMINE软件系统建立了该露天矿山的三维实体模型,更加准确、直观地反映了矿床与工程实体的形态及其空间分布关系。针对所建的矿体模型进行了品位估值、储量计算等工作,并基于Le-rchs-Grossmann优化方法(L-G法)对该铝土矿进行露天境界优化研究,参照采矿手册及工程经验,确定合理的露天境界优化参数,得出了该矿山露天开采的最优经济境界。结果可用来指导该矿山前期的资源开发和投资决策,并为后期安排生产计划和实时调度控制提供可靠的依据。     

基于Micormine软件的露天矿境界优化应用

露天矿境界优化是露天矿山开采的重要环节,需要考虑矿山的多种因素对优化设计方案的影响,实现矿山的经济效益最大化。在已建立的三维地质模型的基础上,采用MicroMine矿业软件对大平掌铜矿进行露天境界优化,结合实际情况对露天境界进行了再优化,得出了最优露天境界,使矿山设计与市场紧密结合,做到动态管理,实现资源的最优化利用。     

露天矿生产规模优化的经济动态评估方法

为实现经济动态评估、采剥总量均衡的露天矿生产规模优化,将露天境界优化与生产规模相结合,建立矿床地质数据库、矿床三维地质实体模型和块段品位模型,综合考虑矿床品位分布不均、资金时间及矿石价格的可变性等因素对境界优化和生产规模的影响,借助境界动态优化分析软件Whittle的Milawa算法,快速生成高质量批量的露天境界,并计算出不同境界方案下的矿山动态经济指标,选择出最优境界,模拟矿山经济运营情况,从技术经济角度优化出矿山生产规模和采剥顺序;在项目依托矿山包钢白云鄂博东介勒格勒铁矿的应用结果表明：该矿山最优生产规模为130万t/a,但在当前的市场环境下,投资收益率为7.58%,矿山开采经济风险很大。为矿山企业的决策提供了科学依据。     

基于浮动圆锥法的境界优化及三维可视化露采设计

采用传统手工法确定露天矿开采境界,计算工作量大,无法全面考虑资源开采技术及经济条件指标等因素对境界优化的影响,很难得到合理的最终开采境界.以数字矿山系统--QuantyMine为平台,在建立的矿区三维含品位块体模型基础上,设计和开发了浮动圆锥法境界优化算法,在软件中实现露天矿的境界优化,进而支持最优的露天开采设计.     

考虑生态成本的南芬露天矿最终境界优化

依据矿山生态足迹定义,基于生态足迹模型,建立了生态成本分配模型,将生态成本分摊到某露天矿的开采成本中,从生态的角度出发,将外生成本内生化进行最终境界的设计,进行境界优化迭代,得到考虑生态成本下的最终境界,并分析了生态成本对最终境界的影响。优化结果表明：考虑生态成本下圈定的矿山最终境界缩小了11.29%;开采出的矿岩量较未考虑生态成本下圈定的最终境界的矿岩量少,矿石量减少15.38%,岩石量减少了30.45%;将矿山生态成本内生化圈定的境界得到的净利润,比未考虑生态成本圈定的境界,并以该境界核算出对应的生态成本进而得到的矿山综合利润多出了13.46%,生态成本内生化对最终境界优化有很大影响。     

某露天矿境界优化的敏感性分析

露天矿境界优化过程中,选择合理的最终开采境界和分期开采境界对矿山企业前期的生产投资和生产经营费用都有重要影响,而影响境界变化的因素很多,分析各因素对露天境界的影响程度以及重要性很必要。以某露天矿山的矿岩模型为基础,采用矿业露天境界优化软件NPV,以设计确定的基准参数为参照,对最终境界优化的影响进行了敏感性分析,结果显示,金属价格对露天境界的矿石、金属量、利润影响最大。分析结果有利于决策者对资源开采准确把握,制定灵活开采的应对策略。     

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     

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     

2014 second batch of rare earth quota released

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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     

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.