合理利用低品位铝土矿石的途径

介绍了小山坝低品位铝土矿规范开采、合理收购民矿、优化配矿、推广应用选矿工艺等合理利用矿石资源的途径，为低品位铝土矿山走出困境指出了方向。     

山西省铝土矿资源的可持续开发战略

山西是我国铝土矿的资源大省,累计查明的资源储量和保有资源储量均居全国第一,实现山西省铝土矿资源的可持续开发具有重要的意义。本文总结了山西铝土矿资源分布范围广、以中小型规模为主、品位中等、开采加工性能良好等特点,分析了在开发利用过程中存在的问题:利用水平低;对共伴生矿产的综合利用程度不高;开采秩序不规范;勘查程度偏低。最后提出了山西铝土矿可持续开发的对策:提高铝土矿资源信息管理和矿山环境治理水平;提高低品位铝土矿石利用水平或多金属矿石资源的综合利用;提高资源保障程度;把铝工业培育成为山西省新的支柱产业。     

我国铝土矿资源开发利用“三率”调查与评价

介绍了我国铝土矿开采回采率、选矿回收率和综合利用率"三率"调查结果。我国铝土矿资源以一水硬铝石为主,年采出矿石量18 409.5 kt。大型矿山数量占全国总数的4.08%,采出矿石量占全国总量的45.30%。我国铝土矿资源开采回采率、选矿回收率、综合利用率分别为83.91%、84.99%、75.48%,全国铝土矿废石平均利用率3.42%,铝土矿选矿尾矿暂未规模化利用。     

焦作市低品位铝土矿资源特征及选矿可行性

焦作市铝土矿储量极为丰富,但以低品位矿石为主,必须经过选矿富集,方可达到利用之目的.对不同类型的铝土矿进行了选矿可行性试验评价,铝土矿经过选矿处理后,所得精矿的质量有很大提高,其A/S提高近一倍,使铝土矿中的低品位矿石得到利用,充分发挥了矿产资源的经济效益和社会效益.     

液压支柱护顶崩落采矿提高铝土矿回采率的研究

针对铝土矿普遍采用的全面采矿法存在的矿石损失、资源浪费严重等问题,提出液压支柱护顶崩落采矿法,即在采矿工作面顶板利用液压支柱提供临时支护,采矿不留矿柱全厚推进,铝土矿的回采率因而可提高10%左右,为铝土矿的高效、安全、经济开采开创了新路。     

广西铝土矿资源特征及利用现状

本文通过统计分析广西铝土矿资源储量的数量、类型、结构、品质、空间分布及开发利用现状,对其保障程度进行研究,总结出广西铝土矿的几大主要特点:①以大中型规模一水硬铝石岩溶堆积型矿石为主,集中分布于桂西资源富集区,利于集中开发;②保有资源储量占比高达94.91%,开发潜力较大,资源保障程度高;③Ⅰ+Ⅱ级品矿石资源储量保有率高达47.14%,矿石质量上乘;④矿体埋藏浅、矿石开采易,矿山开发利用效率高等。最后提出了几方面的建议:全区规划布局二个铝业开发经济区,加强铝产能调控,不宜新增氧化铝产能;加强新设立铝土矿整装勘查区、沉积型铝土矿及桂中红土型高铁三水铝土矿勘查工作,努力实现找矿及工业利用研究的突破;提高伴生矿产及尾矿综合利用水平;大力发展铝精深加工产品产业链。     

硬水铝石矿石反浮选的新进展--中国的经验

硬水铝石铝土矿是主要的铝资源之一.中国大部分硬水铝石型铝土矿的低铝硅比(＜6)使得必须进行物理提纯才能利用这类丰富的铝资源.过去3年在研制反浮选工艺以提高中国硬水铝石铝土矿的铝硅比至10以上方面,取得了明显的进展,从而使这类铝土矿能用作拜耳法原料.本评述概述了中国硬水铝石矿石反浮选的基本认识和工艺开发方面的进展,文中首先叙述了硬水铝石矿石主要组分的晶体结构,接着讨论了黏土脉石矿物的有效捕收剂和硬水铝石的抑制剂.     

利用凹山铁矿床低品位矿石的可能性分析

如何合理利用矿产资源,一直是矿山科技人员探索的课题.本文从凹山铁矿床低品位矿石的空间赋存状态,矿石储量、质量、开采特点等,分析利用这部分矿石的可能性,并且引伸到整个南山地区资源的利用问题的探讨,以阐述利用这部分资源的利用价值及意义.     

八街难选褐铁矿合理利用的试验研究

我矿长期来,都是开采天然富矿石,而富矿石在开采中已逐年的减少。为了满足高炉炼铁的需要,只好采取吃富丢贫的办法。这样大量地浪费了矿石资源。另外,有的矿体已部分剥离,具备了开采条件。由于矿石品位低,不能直接入炉,因而不能开采。为了合理的开发利用矿石资源和提高高炉利用系数,降低炼铁焦比及熔剂消耗,低品位褐铁矿的合理利用成了当务之急。     

铝土矿胶带机运输系统多品位矿石连续分运方案设计

由于长壁综采生产工艺开采的铝土矿矿石品位变化频繁,而且矿石品位无法直接快速测量。根据铝土矿生产工艺和运输设备组成现状,研究了胶带输送机物料分布监测技术,设计了胶带机运输系统矿石品位识别系统,使运输系统可以连续运输不同品位的矿石,降低了由于运输系统不完善导致的矿石贫化率,提高了铝土矿的开采效率。     

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     

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。     

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     

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     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。