煤制油污泥制备污泥煤浆的基础特性研究

以煤制油污泥与瘦煤混合制备的煤浆为研究对象,考察不同污泥添加量对污泥煤浆粘度、流变性和稳定性的影响。结果表明,随污泥添加量的增加,煤浆的粘度升高,最大成浆浓度降低,当污泥添加量从0%增加到15%时,最大成浆浓度由73.08%降至65.38%;污泥的加入使煤浆由胀塑性流体变为屈服假塑性流体,并且随着污泥添加量的增加,其假塑性也随之增强;此外,添加污泥能够显著提高水煤浆的稳定性。     

煤焦油石油焦浆成浆特性实验研究

通过研究煤焦油石油焦浆的成浆特性、流变性以及稳定性,考虑了浆体温度和添加剂对油焦浆成浆特性的影响。随浆体温度的升高,油焦浆的黏度逐渐下降。往浆体中加入了十二烷基苯磺酸钠或op乳化剂后,浆体的黏度随温度的升高下降更加迅速。当石油焦浓度小于30%时,浆体呈现出剪切变稠的胀塑性流体特性;随浓度的增大,当浓度大于40%的情况下,浆体呈现出剪切变稀的假塑性流体特性。油焦浆的稳定性较差,通过加入十二烷基苯磺酸钠或op乳化剂,可以使浆体在静置3 d和7 d后仍保持较好的流动性和稳定性,但随浆体浓度的增大,稳定性能会降低,特别是当石油焦浓度超过50%后,浆体将无法稳定保存3 d以上。     

减水剂在充填料浆中的作用机理及应用研究

提高充填料浆的输送浓度是提高充填体质量、降低充填成本的有效途径之一。为此，开展了减水剂在充填料浆中的作用机理研究并在金川矿山进行了试验与应用，结果表明：在充填料浆中添加高效减水剂可以大大提高充填料浆的输送浓度，并显著改善高浓度充填料浆管道输送性能，减水效率可达15％，充填体强度增大25％～46％，并且可以进一步降低充填材料成本，节省排水排泥费用。     

硬质高岭土湿式超细新工艺及磨矿动力学特征

硬质高岭土由冲击磨粉碎至－１２５０目后,经四段湿式磨矿,可得到－２μｍ含量大于９０％的超细高岭土。当磨矿浓度为４０％￣５０％时,随研磨（剥片）时间的延长,粘度上升,磨矿过程呈一阶动力学特征;高于此浓度,磨矿效果明显下降。     

减水剂类型对细尾砂充填料浆流动性及强度的影响

采用聚羧酸、三聚氰胺以及萘系三种类型的减水剂，开展了减水剂在不同掺量下细尾砂充填料浆流动度、流变及强度试验，研究了减水剂类型和掺量对充填料浆流动度、屈服应力、塑性粘度、表观粘度、触变性及充填体强度的影响规律。研究表明:减水剂的掺入可以显著提高料浆流动度，降低屈服应力和表观粘度。减水剂对料浆塑性粘度的影响相对较小。此外，料浆触变性随减水剂掺量的增加呈现出先增强后减弱的变化趋势。相比三聚氰胺、萘系减水剂，聚羧酸减水剂对料浆流动性能的改善效果更优。一定充填浓度下，减水剂的掺入会降低充填体早期强度，但对充填体中后期强度影响较小，甚至略有提高。     

鄂西高磷鲕状赤铁矿矿浆粘度影响因素研究

为了给研究如何提高鄂西高磷鲕状赤铁矿的超细磨效率提供参考,考察了矿石细度、矿浆浓度、矿浆温度及剪切率对鄂西高磷鲕状赤铁矿矿浆粘度的影响。结果表明：鄂西高磷鲕状赤铁矿的矿浆粘度随矿浆浓度提高和矿石细度变细呈指数关系上升。矿石较粗时,温度对矿浆粘度影响较小;矿石变细后,矿浆粘度随温度升高逐渐呈直线下降趋势。随着剪切率的提高,矿浆的粘度不断下降,而且在剪切率提高的初期下降幅度很大。根据试验结果,认为对鄂西高磷鲕状赤铁矿进行超细磨时,矿浆浓度不宜超过50%,同时适当提高磨机的转速将有利于降低矿浆粘度,提高磨矿效率。     

几种助磨剂在长石湿法磨矿中的应用效果研究

通过对比试验证明,使用助磨剂可以降低矿浆粘度,改善矿浆流变特征,提高磨矿效率,降低能耗。结果表明:六偏磷酸钠助磨效果最好,其最佳用量为钠长石质量的0.15%,磨矿浓度为78%时,研磨细度最好;除铁的矿浆浓度为25%时,能获得Fe_2O_3含量为0.07%的精矿。     

助磨剂在云母超细磨矿中的应用

介绍了云母的超细磨矿过程中助磨剂对粉碎效果的影响，研究表明助磨剂主要是通过与云母粉的吸附，起到降低矿浆粘度，改善矿浆中固体颗粒的分散性而产生助磨作用，试验证明在磨矿过程中使用助磨剂可以提高磨矿效率，降低能耗。     

制备条件对煤浆性能的影响

介绍添加剂用量，煤的粒度分布，煤浆粘度，测量条件对煤浆性能的影响，并指出水煤浆在高煤浓度时是一种非牛顿型的，假塑性的，具有触变性的流体，低煤浓度时则接近牛顿型流体。     

化学添加剂对油煤水浆粘度影响的试验研究

为了改善油煤水浆的综合性能,降低浆体粘度,通过在油煤水浆中添加不同种类和用量的乳化剂和电解质进行试验,研究它们对浆体粘度的影响,得出加入0.80%乳化剂B和0.05%Na2SO4的油煤水浆的粘度最低。试验结果表明：乳化剂对油煤水浆粘度的改变主要与其自身的性质有关,相同条件下乳化剂B的效果最好。电解质对于浆体的粘度有重要影响：电解质的金属离子的化合价越低,浆体的粘度越低;而含SO4^2-的电解质的浆体粘度较低。当添加剂的浓度较低时,浆体的粘度较低。     

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.     

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。     

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,