0～20mm石灰石矿深加工综合利用的研究

论述了研究武钢乌龙泉矿0～20mm石灰石尾矿综合利用的途径,重点研究利用0～20mm粉矿生产活性石灰的方法。每年可综合利用石灰石粉矿16万t。     

煤烧活性石灰工业性试验研究

以煤为燃料 ,在工业回转窑上进行了活性石灰煅烧工业性试验。研究了煅烧温度、煅烧时间对活性石灰含硫量、活性度的影响 ,获得了系统的工业试验参数 ,为煤烧活性石灰回转窑生产线的建设提供了可靠的工艺参数     

石灰石微观形貌对其煅烧后物化性能影响

为研究石灰石微观形貌对其煅烧后石灰物性参数及活性的影响,将三种产区的石灰石矿进行了XRF、扫描电镜观察、煅烧、石灰活性检测等一系列等试验。研究石灰石的微观晶粒度对其烧成石灰的孔隙度、水活性的影响。结果表明:三种产区石灰石的晶粒尺寸在10 ～ 50 μm之间,微观晶粒形状和大小有所不同;在相同煅烧温度和时间下,随着石灰石微观晶粒度增大,煅烧后所获得石灰孔隙率越高,石灰活性越大。     

马家沟组镁质灰岩煅烧高品质冶金石灰生产实践

为了工业化利用高镁石灰石资源,太钢针对马家沟组高镁灰岩爆裂严重其产品不能满足用户要求的问题,通过实验室试验分析和工业试验,对高镁灰岩理化特性、爆裂特性及粒级影响等方面进行了研究.研究得出了镁质灰岩煅烧高品质石灰的合理煅烧工艺和配矿方案,解决了原计划作为废石的镁质灰岩资源高效化利用的难题,石灰产品质量整体脱硫效果与标准石...     

活性石灰回转窑关键参数研究及智能设计系统开发

通过回转窑内热工制度、燃料特性分析及石灰石在回转窑内停留时间的试验研究,分析了燃料、原料因素对活性石灰回转窑关键设计参数影响;利用程序设计语言Visual C++开发了活性石灰回转窑参数化智能设计系统,为合理高效地完成活性石灰回转窑关键参数的设计和校核奠定基础。     

并流蓄热式双膛竖窑生产活性石灰的探讨

目前国外用于煅烧细粒石灰的竖窑主要窑型为瑞士麦尔兹窑炉公司设计建造的并流蓄热式细粒石灰双膛竖窑,该窑用于煅烧20～40mm小粒度石灰石,可以充分利用目前我国石灰石矿许多丢弃的细粒石灰石,为我国石灰石矿的资源综合利用开辟了新途径。煅烧好的石灰石用于转炉炼钢,可以降低石灰石的消耗量,提高废钢的加入量,具有显著的经济效益。     

武钢矿业有限责任公司乌龙泉矿简介

武钢乌龙泉矿是《西部探矿工程》主办单位之一。据龙泉矿位于武汉市江夏区乌龙泉镇 ,京广铁路乌龙泉火车站西侧 ,北距武汉市 3 2公里 ,离武钢 5 6公里 ,有铁路和公路相通。乌龙泉矿是武钢的熔剂矿石生产基地 ,主要产品有优质石灰石、普通石灰石、白云石、冶金石灰、消石灰、水泥等。矿山于 195 8年建成投产 ,设计年采剥总量为 487万吨 ,原矿 2 70万吨 ;另有 3 0 0ｍ3 和 3 2 0ｍ3 石灰立窑各一座 ,设计年生产石灰 2 0万吨 ,有 2 4×42ｍ水泥回转窑 (带五级旋风预热器 )一座 ,设计生产能力为 12 7万吨水泥 /年。近几年实际生产规模为年采…     

添加剂对煅烧白云石活性的影响

考察白云石煅烧工艺和添加剂对煅烧白云石活性度的影响.结果表明,影响活性度的主要因素为煅烧温度、煅烧时间和颗粒大小.对于粒度为2～5mm的白云石煅烧温度对活性影响较大,粒度为5～10mm和10～15mm的白云石煅烧时间对活性影响较大.最佳煅烧工艺条件为粒度5～10mm,温度950℃,煅烧时间0.75h.最佳煅烧工艺条件下产物活性为34.63%.在950℃分别加入添加刑NaC1,Cac12和CaF2煅烧0.5h.可以提高煅烧速率,缩短煅烧时间,同时提高煅烧活性.     

朔州煤系硬质高岭岩煅烧试验研究

我国煤系硬质高岭岩资源丰富。出于开发高档完全煅烧土产品技术市场的急需 ,在工艺矿物学研究基础上进行了朔州煤系硬质高岭岩煅烧实验室试验研究。考察了煅烧温度、磨矿细度、矿石质量以及煅烧方法等因素对产品白度的影响 ;研制了可有效提高产品白度的添加剂 ;通过对比试验 ,选择了制取完全煅烧土的“先磨后烧”流程 ;证实了回转窑半固定床动态煅烧明显优于静态煅烧 ,推荐了回转窑煅烧方案。最终制定了开发利用朔州高岭岩制取完全煅烧土的原则工艺流程 ,并指出了重视原料精选作业的必要性。     

煤粉性能及其燃烧控制对石灰回转窑结圈的影响

涟源钢铁公司田湖铁矿石灰石回转窑结圈问题,严重影响了回转窑的运转率、石灰的质量和产量。本文通过结圈物的矿相鉴定,从煤的质量、灰分性能、煤粉的燃烧过程及燃烧的控制等方面,阐述了这些因素对回转窑结圈的影响,并提出了相应改进措施。     

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     

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.     

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