镍渣微晶玻璃核化及晶化制度的研究

以金川镍渣为主要原料采用熔融法制备建筑装饰用微晶玻璃。在成分研究的基础上，通过DSC测试、XRD、SEM和光学显微镜等分析手段，对添加了10wt％TiO2作为晶核剂的CaO-MgO-Al2O3-SiO2系统镍渣微晶玻璃试样的主晶相及微观结构进行了分析，得出了适用于该系统镍渣微晶玻璃的最佳热处理制度。     

复合尾矿微晶玻璃的组成设计与显微结构分析

以CAS系统相图为配料依据,以钢渣、粉煤灰、铜尾矿及砂岩为主要原料采用熔融法制备微晶玻璃。通过基础玻璃的DTA曲线确定最佳基础玻璃配料组成。借助于XRD、SEM及EDS确定了微晶玻璃的显微结构,结果表明:其主晶相为透辉石,晶粒形貌为颗粒状,晶粒尺寸约0.5μm,主要元素为S i、Fe、A l、Ca以及0。并探讨了基础玻璃的组成、晶核剂的选择等问题,对其主要性能进行了测试。     

以钠长石粉为原料制备微晶玻璃饰面材料

研究了以钠长石粉为主要原料制备微晶玻璃装饰板条件,由于钠长石粉的主要成分为SiO2和Al2O3,选择CaO-Al2O3-SiO2系统为玻璃配方依据,探讨了烧结法工艺的核化、晶化温度对制品的影响,获得了主晶相为β-硅灰石及固溶体的微晶玻璃装饰板。     

以钾长石尾矿为原料制备微晶玻璃饰面材料

研究了以钾长石尾矿为主要原料制备微晶玻璃装饰板的条件。由于钾长石尾矿的主要成分为 Si O2 和 Al2 O3 ,选择 Ca O、Al2 O3 、Si O2 系统为配方依据 ,探讨了碎粒法工艺核化温度、晶化温度对产品的影响 ,获得了主晶相为 β-硅灰石的微晶玻璃装饰板。     

高炉渣制备微晶玻璃的研究进展

微晶玻璃是一类含有微晶相和玻璃相的多晶固体材料,是特定组分的基础玻璃在一定的热处理制度下通过控制晶化作用制得的一种功能性材料,兼具玻璃的基本特性和陶瓷的多晶特性,因此具有良好的化学稳定性和物理稳定性,目前已被广泛应用于建筑装饰、电子电工和机械化工等领域。利用废弃高炉渣生产微晶玻璃不但可以固定炉渣中的有害成分,还可以降低成本,产生一定的经济效益,因此这是一项具有环保和经济双重效益的生产技术。文章主要概括了以高炉渣作为原材料制备微晶玻璃的发展历程,系统阐述了国内外对于晶核剂的作用机理、提高微晶玻璃的性能、主晶相的选择以及晶化方式等方面的研究进展,并介绍了高炉渣微晶玻璃的制备原理、工艺方法、晶核剂和热处理制度的选择依据,同时简要叙述了微晶玻璃按照不同标准的分类情况及其性质和应用。     

利用硫铁矿尾矿制备微晶玻璃

以硫铁矿尾矿制备微晶玻璃,并用DTA、XRD、SEM等手段分析了微晶玻璃的相变、相组成及微观结构。结果表明,利用硫铁矿尾矿为主要原料,添加适量的其他原料,可获得主晶相为透辉石相的微晶玻璃。     

利用铜矿尾矿制备微晶玻璃试验研究

某铜尾矿主要矿物成分为石英、方解石、绿帘石、赤铁矿等,属高铁、低硅型尾矿,采用原料加工-配料混匀-熔制玻璃-水淬成粒-过筛-铺料装膜-烧结流平-晶化成型-抛磨-切割-成品检验工艺,生产CaO-MgO-AL_2O_3-SiO_2四元系统的微晶玻璃,产品主要技术指标达到GB/T13981-2008标准。     

赤泥微晶玻璃的研究

以赤泥为主要原料,配以其它化工原料制备了性能优异的微晶玻璃。采用ＤＴＡ、ＸＲＤ、ＳＥＭ等手段研究了赤泥微晶玻璃的晶相组成和结晶形貌。结果表明,赤泥微晶玻璃的主晶相是钙铁透辉石,次晶相为钙铝黄长石。     

黄金矿尾砂综合利用研究

介绍了黄金矿尾砂制造微晶玻璃花岗石的研究。研究表明，用黄金矿尾砂为主要原料引入CaO、MgO等成分，形成CaO－Al2O3－SiO2系微晶玻璃。以此为基体，添加各种着色剂及助剂可制成各种颜色的微晶玻璃花岗石，制品的各项物化性能达到天然花岗石，是一种优良的装饰材料。     

低硅铁尾矿微晶玻璃成分的研究

武钢程潮铁矿的铁尾矿属于低硅铁尾矿类型,由于没有可利用的主要成分,其利用难度较大。在对低硅铁尾矿主要成分研究的基础上,根据相图,采用CaO—MgO—Al2O3-SiO2体系(简称CAMS体系)和烧结法研制以透辉石为主晶相的微晶玻璃。经试验研究,选择了合适的晶核剂并确定了合理的烧成温度,在实验室条件下获得了工艺性能优良的低硅铁尾矿微晶玻璃及其主成分的组成范围。     

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.     

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     

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.     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

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     

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