NL有机微球对乳化炸药的敏化研究

分析了国内外乳化炸药敏化剂的性能特点和存在的问题,介绍了NL有机微球作为乳化炸药新型敏化剂的技术特点。研究了NL有机微球的含量、敏化温度、混合方式对乳化炸药的密度调节能力和爆炸性能的影响规律,结果表明,当NL添加量为乳胶基质质量的0.35%时,并以1∶2比例同水混合形成浆液,于90～95℃敏化乳胶基质,具有优良的敏化效果,乳化炸药装药密度为1.16 g/cm3,爆速为5 350 m/s,殉爆距离为6 cm,贮存期可达1年。     

AE型乳化炸药安全性试验

本文介绍具有雷管感度的高爆速高稳定性的ＡＥ型乳化炸药成品和乳胶基质的安全性能试验的方法及结果。在目前暂无国家行业标准可供参照情况下，文中提出的乳胶基质的安全性试验方法是可行的，并具有重要的实际意义。试验结果表明，ＡＥ型乳化炸药比国内常用的乳化炸药基质安全性好     

降低乳化炸药爆速的途径

文中讨论了影响乳化炸药速的因素。研究结果表明,密度调节剂可明显降低乳化炸药的爆速,可制成爆速在2000m/s以下的低爆速乳化炸药：密度调节剂在8％时,乳化炸药爆速最低。     

地下现场混装乳化炸药技术装备在西藏的应用

高海拔环境对地下采矿工程机械以及乳化炸药爆速性能会产生严重影响。介绍了BCJ-4I高原型地下乳化炸药混装车,对比不同海拔高度下现场混装乳化炸药的爆速性能,针对高海拔条件在混装车研发设计方面采取了功率补偿、换热补偿等一系列技术措施。该高原型混装车在海拔4 490m的西藏甲玛铜矿进行了应用推广,可为同类高海拔地下炸药混装车的研发提供工程经验。     

乳胶基质体系分散相粒度分布研究

乳胶基质分散相的粒径对乳化炸药的稳定性,爆轰性能都有很大的影响。本文利用两种测试手段分析乳胶基质的粒径分布与乳化搅拌剪切速度的关系,实验结果表明:乳胶基质分散相粒径大小,随着搅拌剪切速度的增加而减小;乳胶基质乳化搅拌的临界剪切速度为1500 r/min;剪切速度越高,乳胶基质分散相粒径平均值越小,分布越均匀。     

地下矿用智能炸药装药车关键技术研究

本文分析了我国地下金属矿山采矿装药爆破工序的现状及发展趋势,针对上向孔装药难题,对适用于地下金属矿用智能乳化炸药装药车的关键技术进行了研究,重点研究了地下矿用智能炸药装药车的自主行驶及壁障技术、工作臂远程(视距)无线遥控及自动寻孔技术、输药管自动送退管及炮孔底部识别技术。地下智能炸药装药车在凡口铅锌矿的工业实验结果表明该地下矿用智能炸药装药车实现了地下装药的自动化、智能化,有效提高了地下装药的安全性和效率。     

井下中深孔散装乳化炸药装药车的成功运行提高了井下装药效率和改善了爆破效果

2009年3月,由北京星宇惠龙科技发展有限责任公司研制的BCJ—2型井下散装乳化炸药装药车在华北某地下金属矿山投入运行,成功地对该矿的上向中深孔进行了长距离装药,乳胶基质输送距离达到70m,上向装药高度达到30m。装药顺利,爆破效果良好!     

超硬度岩石爆破乳化炸药的研制

通过优化调整乳化炸药配方,使炸药中的基本组分达到零氧平衡,大大提高了乳化炸药的性能。试验结果显示:爆速大于4 500 m/s、作功能力大于290 mL、猛度大于16 mm、适用于f≥20的超硬度岩石的爆破,能提高爆孔利用率,降低单耗;相对于普通的M型乳化炸药,该炸药可节约50~80元/t。     

BCJ系列散装乳化炸药现场装药车MEF移动式乳胶基质制备站

BCJ系列散装乳化炸药装药车是将常温乳胶基质直接装入炮孔,同时混入敏化剂,在炮孔中敏化为炸药的一类装备。可实现炮孔的完全耦合装药,大幅度提高炮孔利用率,改善破碎效果,缩短装药爆破循环周期,提高采掘综合效率。通过优化孔网参数,可减少炮孔数量,大大降低钻孔成本。MEF移动式乳胶基质制备站是与装药车配套的技术与装备,是将工厂乳胶基质生产的油水相制备系统、     

尿素对乳化炸药水相的负面影响

江西德兴铜矿矿体含硫较高,由于乳化炸药直接与炮孔(矿岩粉)接触,容易产生化学放热反应,在高硫区引发自燃现象。针对这一问题,提出了向乳化炸药中添加一定量的尿素,成为防自燃乳化炸药。但是,在乳化炸药水相生产制作中,由于添加尿素,水相生产工艺参数析晶点、pH值会随时间延长而发生变化,严重影响炸药质量,导致乳化炸药地面测试爆速急剧下降。通过试验与生产工艺改进相结合,消除了尿素对乳化炸药水相的负面影响。     

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     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

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 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