搅拌磨超细粉碎工艺的研究

介绍了搅拌磨超细粉碎的工艺过程和助磨剂对超细粉碎效果的影响。探讨了搅拌磨超细粉碎的行为特征。研究表明,用搅拌磨可制得平均粒径小于１μｍ的超细滑石粉,工艺简单,效率高,产品无污染;助磨剂主要是通过与滑石粉的吸附作用,降低矿浆粘度,提高磨矿过程的分散性而产生助磨作用;     

超细滑石粉的制备及应用

搅拌磨是一种新型高效超细粉碎设备，本文研究了搅拌制备超细滑石粉过程中矿浆浓度，球料比，介质种类及给料粒度对制粉效果的影响。结果表明，用搅拌磨可制得粒径小于１μｍ的超细滑石粉，工艺简单。     

超细重晶石粉加工过程细磨行为研究

用搅拌磨湿法超细加工,制得了平均粒径〈１μｍ的超细重晶石粉,分析了超细加工过程的细磨行为及粉体物理性质的变化 。     

天然羟基磷灰石超细粉碎试验研究

通过试验研究,利用小型搅拌磨对羟基磷灰石进行超细粉碎,选择出适合羟基磷灰石超细粉碎的分散剂蔗糖脂,研磨时间为8-12 h,并对小型搅拌磨超细粉碎的粉体进行性能表征。利用小型搅拌磨可以得到粒度分布较窄的粉体样品,d50值为0.781μm,比表面积为19.83 m2/g。     

典型湿式搅拌细磨技术与应用进展

阐述了搅拌细磨技术在矿物加工行业细磨、超细磨作业流程中的重要作用，详细分析了螺旋式、盘式、棒式三种搅拌细磨装置的重要优势和应用范围。重点对细磨效果关键因子的理论分析和基于CFD、DEM、PEPT的模拟仿真过程及结果进行了探讨，详述了搅拌细磨技术的研究进展。在此基础上，总结了以三种搅拌装置为代表的搅拌细磨装备的典型结构及研发、应用进展，以期能对搅拌细磨技术和装备的研究、推广提供帮助，为实现矿物加工行业的节能高效细磨、超细磨提供有益借鉴。      

无铁污染搅拌球磨法制备高纯超细硅微粉的研究

用钇稳定氧化锆球为研磨介质, 在研磨桶内壁和搅拌器都衬以聚氨酯的搅拌磨设备中粉磨制备高纯超细硅微粉。研究了硅微粉特征参数D₅₀随搅拌粉磨时间的变化规律, 考察了钇稳定氧化锆球对硅微粉的污染程度, 分析和探讨了1 μm以下超细硅微粉的化学成分和形貌特征。实验证明, 搅拌磨细磨石英砂可获得1 μm以下的高纯超细硅微粉, 但难以获得球形硅微粉。     

江苏某重质碳酸钙搅拌磨湿法超细磨矿试验研究

通过ＧＳＤＭ－４００型超细盘式搅拌磨的工业型试验，研究了江苏某重质碳酸钙搅拌磨湿法超细磨矿技术及微粉加工工艺，结果表明，搅拌磨可在较高的效率下将重钙细磨至－２μｍ含量９０％以上，造纸涂布极重钙微粉的加工可采用单一磨矿和磨矿－分级两种工艺，其中后者的综合技指标较佳。     

天然羟基磷灰石超细粉碎实验研究

通过实验研究，利用小型搅拌磨对羟基磷灰石进行超细粉碎，选择出适合羟基磷灰石超细粉碎的分散剂蔗糖脂，研磨时间为8-12h，并对小型搅拌磨超细粉碎的粉体进行性能表征。利用小型搅拌磨可以得到粒度分布较窄的粉体样品，d50值为0．781μm，比表面积为19．83m^2／g。     

DA分散剂在超细SiO2粉磨过程中的助磨作用研究

本文利用搅拌磨进行了超细SiO2粉的粉磨制备研究。在适宜的搅拌磨操作条件下,添加DA分散剂进行超细SiO2粉的粉磨试验,通过产品粒度(d50、d97)考察了助磨剂对粉磨过程的影响,并确定了DA分散剂的最佳用量。最后通过DA分散剂对SiO2硬度及矿浆流变性的影响,探讨了助磨剂的作用机理。     

搅拌磨超细粉碎的工艺与应用研究

搅拌磨是一种新型高效的超细粉碎设备。研究了搅拌磨制备超细粉过程中矿浆浓度、球料比、介质种类及给料粒度对制粉效果的影响。结果表明，用搅拌磨可制得粒径小于１μｍ的产品，工艺简单。分析了搅拌球磨过程中矿浆粘度、温度和产品白度的变化，及搅拌磨的能量效率。用搅拌磨制得的超细滑石粉（－１μｍ）填充ＰＰ塑料，可提高制品性能，降低成本。     

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     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered     

铜熔炼中锍品位对杂质元素分配行为的影响

借助于多相、多成分系统中平衡计算的手段，开发出微量元素砷、锑、铋及伴生元素铅、锌等在铜熔炼中分配行为的计算机模型。利用该模型对铜熔炼过程进行计算机模拟，分析了冰铜品位对砷、锑、铋、铅和锌等杂质元素的分压、活度系数及它们在冰铜、炉渣和气相中分配率的影响，并讨论其热力学分析结果对生产实践的指导意义。     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new