液压支架用乳化液的水质影响及纯水系统研制

综采工作面液压支架乳化液配制用水的水质会对乳化液的性能产生极大的影响。从乳化液配制用水的基本要求出发,研究了乳化液配制用水的硬度和SO_4~(2-)、Cl~-含量对乳化液稳定性及防锈性能的影响程度,研究表明:水质硬度越低,透光率越好,乳化液稳定性也越好,应将水质硬度控制在250×10~(-6)以下;水质硬度过高和水中SO_4~(2-)、Cl~-含量过大都会造成乳化液防锈性能下降,水质硬度越低,防锈能力越好,同时SO_4~(2-)、Cl~-浓度越低,防锈能力也越好。并在此基础上开发了基于双级反渗透和EDI的工作面全水质纯水处理系统。实际应用效果证明,经该系统处理的水质完全满足乳化液配制用水要求,为工作面支架液压系统提供了可靠的水质保障。     

一种新型乳化液过滤站的研制与应用

针对液压支架对乳化液精度的要求,自行研制了一种矿用乳化液过滤站。该设备运用液压原理过滤,采用并联和串联的方法,对达不到精度要求的乳化液进行高压过滤。使用该设备后大大提高了乳化液的精度,达到了电液控制液压支架对乳化液的高标准要求。大大降低液压件损坏率,液压件的使用寿命增加2倍以上。     

李村煤矿综采工作面井下固定泵站远距离供液系统设计

从李村煤矿大采高综采工作面实际情况出发,综合分析了液压支架移架速度、工作面泵站设备和用水设备的要求及乳化液管路选择等重要因素,对井下固定泵站远距离供液系统加以设计,并介绍了应用该系统所带来的经济和社会效益。     

纯水液压泵站研究与应用

针对液压支架拆解过程中乳化液外泄问题，通过分析拆解的工艺流程，采用纯水代替乳化液作为液压泵站工作介质的方法，解决了缸柱解体时产生的乳化液外泄问题，取得了良好的经济效益。     

综采工作面乳化液用水处理装置的研制与应用

为解决煤矿综采工作面液压支架、电液阀等设备在使用过程中,由于配制乳化液用水水质达不到规范要求而引起腐蚀、结垢或堵塞等问题,采用介质过滤、软化除硬和反渗透脱盐相结合的方法,开发出综采工作面乳化液用水处理装置。该装置主要由压力调节单元、过滤单元、除硬单元和反渗透单元等组成,能够有效去除水中的悬浮物、胶体、硬度、溶解性总固体等物质。实践表明,该装置运行稳定可靠,操作管理方便,大大降低液压支架、电液控制系统的故障率,提高了综采工作面生产效率。     

矿用乳化液过滤站的研制

针对液压支架对乳化液精度的要求,自行研制了一种矿用乳化液过滤站。该设备运用液压原理过滤,采用并联和串联的方法,对达不到精度要求的乳化液进行高压过滤。     

液压支架乳化液高压反冲洗过滤站自动控制系统开发

针对液压支架乳化液的污染问题,为满足煤矿自动化生产对乳化液清洁度日益提高的要求,开发了乳化液高压反冲洗过滤站自动控制系统,提出了乳化液反冲洗过滤站控制参数的优化方法。在实验室进行性能测试,实验结果表明,系统工作稳定,运行可靠,压差检测精度达到了0.1 MPa。该系统可有效提高乳化液反冲洗过滤站的自动控制水平,减少乳化液的浪费,为液压支架提供清洁的乳化液动力。     

综采液压支架乳化液自清洗过滤系统的探讨

介绍了一种新型液压支架乳化液自清洗过滤系统,该系统采用旁路过滤型式,对进入液压支架主液压系统的乳化液进行过滤,以反冲洗方式实现自动或人工自清洗过滤器的滤芯。与同类产品比较,该装置实用性和可操作性较好,也可以推广应用于其他高压大流量液压系统中。     

乳化液自动配比技术的应用

煤矿井下液压支架用乳化液必须保持一定的浓度,否则会影响液压支架的性能和使用寿命。利用乳化液自动配比技术配制的乳化液浓度完全能够满足液压支架的要求。     

液压支架用乳化液热稳定性快速测定研究

针对液压支架用乳化液热稳定性现行测定方法存在周期较长、目视检测不易定量等问题,研究了以粒度组成数据为基础,建立液压支架用乳化液热稳定性快速测定方法的可行性。试验测试了2种不同系列液压支架用乳化液的粒度组成,计算出油性颗粒的沉降高度,并与现行测定法油皂分层厚度进行了比较。试验结果表明:通过粒度组成数据计算油性颗粒沉降高度,进而测定液压支架用乳化液热稳定性的方法可行;油性颗粒沉降高度与液压支架用乳化液的热稳定性有关,沉降高度越大,液压支架用乳化液热稳定性越差;沉降高度越小,液压支架用乳化液的热稳定性越好。     

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     

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.     

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     

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     

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.