多中段多井并联回风在某矿山深部开采通风系统的研究与应用

矿山深部开采面临岩温升高、通风线路长、网络复杂、主扇压力不足等问题,必须进行深部通风系统改造设计。湖南某铅锌矿二期深部矿体向南侧伏,深部矿石含硫量高、放热量大,通风线路长、阻力大,主扇能力低,新鲜风量不足,热量难以排出,严重影响矿山安全生产。为解决通风困难问题,以现场调查和测定为基础,分析了矿山通风系统存在的关键问题,提出多中段多井并联回风深部通风系统改造方案,利用副斜井、小竖井、回风斜井形成多井并联回风网路,利用上部开采结束的2个中段运输巷并联作为深部回风通道,有效降低矿井通风阻力。方案充分利用现有工程,投资少,见效快,取得了良好工程应用效果,可为类似矿井通风系统改造借鉴。     

河台金矿高村矿床深部开采设计研究

根据河台金矿高村矿床深部矿体特征和开采技术条件,对深部矿体开拓方案、通风系统进行了多方案比较选择,提出了下盘盲竖井开拓和新建东回风井与现有竖井构成对角式通风系统。且为了解决深部开采产生的地压问题,建议采用全尾砂胶结充填和高水固结尾砂充填采矿方法取代浅孔留矿法,为下一步开采设计和建设提供参考。     

玻利维亚波尔科锌矿的技术改造

投资1700万美元新建一座开拓深部矿体的盲竖井和一座自动化程度极高的浮选厂,使矿山日采选能力从800t扩大到1200t。文章叙述了矿床地质、开拓和采矿工艺,新选厂的生产流程、使用设备、自动化和生产指标;最后介绍了新选厂设计和施工及施工中遇到的问题。     

布拉什·格里克铅锌矿投产

布拉什·格里克(Brushy Greek)矿山与选厂,建设投资1900万美元。选厂每年生产含铅5万吨的铅精矿;矿山位于一条直线长40哩(64.4公里)的矿化带中心。矿山地质比较简单,很少摺曲或断层,矿体距地表约1000呎(305米)。用两个园形断面、直径为12′6″(3.8米)的竖井开拓,砼衬壁。No.33竖井提升矿石,从地表下掘至1344呎(410米)处,与坑内中段和箕斗装载站相交;No.34竖井提升人员材料,深1033呎(315米)。在上中段布     

局扇通风在竖井深部开拓中的应用

在竖井深部开拓中,前期通风困难是困扰生产的重要问题.玲珑金矿西山坑口通过试验和验证,采用局扇压、抽结合的方式通风,充分利用自然风压,成功地解决了前期深部通风的难题,取得了良好的效果,保证了矿山技改和生产的正常进行.     

浙江某叶蜡石矿生产系统设计与优化

为了充分利用某叶蜡石矿区北矿段现有生产系统,同时开发矿区南北矿段资源,对矿山生产现状及现有系统进行了研究,结合矿山现状,通过比较,分析了几种开拓运输方案的优劣。结果表明,南矿段应采用斜坡道开拓、汽车运输方案。并对斜坡道开拓系统进行了设计,同时对南北两矿段的给排水、通风、压气、供电系统提出了设计优化方案,实现了现有巷道及系统的利用,从而节省了矿山建设投资,降低了生产成本。     

南非金罗斯金矿采用无轨斜坡道开拓深部矿体

金罗斯金矿（KinrossGoldMine）位于埃文德镇以西1．5km处，该镇地处德兰士瓦省东南部。矿脉倾角10°~30°，倾向北，且为大量正断层所横切，最大断层的断距达260m。另一些断层为缓倾斜逆断层，倾向北，断距达50m。两条竖井井筒分别在井口以下1400m和16osm标高处通向矿脉。其有效服务深度分别为地表以下1605m和1830m标高。矿山月平均采矿量35000m‘，月掘进量2000m。选厂月处理能力150Kt。由于服务于现有两条竖井的保有矿石储量的既定消耗，深部门”竖井15水平以下和2”竖井18水平以下）远景储量矿石的开拓便显得尤为重要。但这部分矿体开…     

布尔洞煤矿技术改造开拓方案优化设计

在分析了矿井概况、井田煤层赋存等地质条件,在矿井实际生产现状、充分利用现有资源条件的基础上,充分考虑满足矿井的安全生产条件下,通过方案比选优化确定矿井开拓方案,以实现矿井运输的连续性、减小通风负压、减少投资和缩短工期的目的。     

上河—王峪矿区开拓系统优化比选

为解决鲁南矿业有限公司上河—王峪矿区提升能力低、生产成本高等问题,矿山拟将正在进行基建的上河矿段与王峪矿段联合开发,在充分利用现有开拓工程的基础上,采用综合对比分析方法,对上河—王峪矿区开拓系统进行优化。根据上河—王峪矿区开拓系统建设现状和设计情况,提出了2个整合开拓方案和1个分区开拓方案,通过对3个开拓方案从基建投资、基建时间、年经营费用、停产时间和最大提升能力5个方面进行综合对比分析,最终确定王峪主井整合开拓方案为3个备选方案中的最优方案。该方案不仅能有效解决矿山提升能力不足、生产成本高等问题,而且对矿山正常生产影响小,为矿山留设了一定的扩能空间,产生的经济效益更为显著。     

广西某锡矿深部开拓方案优选

针对广西某锡矿的开采现状及开采技术条件,设计了4种深部开拓方案,即新建组合井开拓方案(方案Ⅰ),盲组合井开拓方案(方案Ⅱ),明箕斗井、盲组合井联合开拓方案(方案Ⅲ)以及盲斜井方案(方案Ⅳ)。在此基础上经过详细的技术经济比选,认为方案Ⅰ的提升、排水、通风、运输环节简单,尽管基建时间相对较长,但总体优于其余方案,故推荐采用该方案。     

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 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     

2014 second batch of rare earth quota released

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