The trace elements in coals from several main coal districts in China were analyzed by means of ICP-MS,with direct dissolution of coal samples in this study.
采用原煤直接溶样和使用ICP－MS方法对我国平朔、大同、六盘水和唐山几个主要煤产地煤的微量元素进行了检测，报道了这几个主要煤产地煤中51种微量元素含量，并对其含量特征进行了讨论，研究表明，与海水有关的过渡相沉积环境中的煤的Li，Be，Sc，Ti，V，Zn，Cu，Ga，As，Se，Y，Zr，Sn，Pb，Th，U和稀土元素含量相对较高，内陆湖泊沉积环境中的煤的微量元素含量相对较低。
Discussion on countermeasures to improve competitive force of china coal industry;
提升中国煤炭产业竞争力的对策探讨
Problem analysis of coal industry scale in Heilongjiang province and countermeasures;
黑龙江省煤炭产业规模问题分析与对策
Multi-object optimization models of coal industry dynamic input-output;
煤炭产业动态投入产出多目标优化模型
It is pointed that using flotation column and pressure filter as flotation clean coal pressure filter can improve slime-water processing capacity and clean coal yield in the case of keeping a consistency in the raw material coal property and feed coal concentration.
分析了兴发选煤厂煤泥水处理系统的改造原因,并介绍了改造后的工艺流程主要特点,指出在原料煤性质、入料浓度相同的情况下,采用以浮选柱与加压过滤机作为浮选精煤压滤机联合使用,可提高选煤厂煤泥水处理能力和精煤产率。
Medium consumption is reduced; clean coal yield and the profit of the enterprise are improved by transforming its flotation system pointedly.
分析了平岗矿洗煤厂的生产现状及其存在的问题,有针对性地对其浮选系统进行技术改造,降低了介耗,提高了精煤产率及企业的经济效益。
The quality variation of quality requirement from market are met,and the clean coal yield and economic benefit are raised.
采用大型三产品重介旋流器分选原煤,适应了原煤煤质变化及市场对产品质量要求,提高了精煤产率及经济效益。
Through analysis of the characteristics of cost structure, this paper gives a further exploration of the main approaches of cost reduction of coal product.
通过分析煤炭生产及产品成本构成的特点,进一步探索了降低煤炭产品成本的主要途径。
Based on the construction and operation of coal quality management system,the coal quality management level was promoted,and the quality of coal product was improved.
煤质管理体系的构建与运行,可提升该矿的煤质管理水平,并可提高煤炭产品的质量。
A PRELIMINARY STUDY ON THE LATE CARBONIFEROUS EPOCH OF THE COAL ACCUMULATION IN YANGHUKOU COAL MINE
山丹羊虎沟煤产地晚石炭世成煤环境初步研究
Coal mining production process and control the impact of groundwater
煤矿采煤生产过程对地下水的影响与防治
bituminous coal is often treated as a consistent and homogeneous product.
烟煤一般被当作质地一致、均匀的产品。
They decided to make Pingdingshan a large coal base.
他们决定把平顶山建成大型产煤基地。
Increase the Geological Technique Content to Reduce Coal Production Cost
提高地质技术含量 降低煤炭生产成本
Study on Superseded Industries Development in Coal Cities in the Central Region of China;
中部地区煤炭城市接续产业发展研究
Comparative advantages analysis of coal resource industry in northeast China;
东北地区煤炭资源产业比较优势分析
Increase the Geological Technique Content to Reduce Coal Production Cost;
提高地质技术含量 降低煤炭生产成本
Study on Gas Production Mechanism and Discipline of High Rank Coalbed Methane in Southern of Qinshui Basin
沁水盆地南部高阶煤产气机理与产气规律研究
Lots of coal mines in neimenggu use the system of room and pillar and exploits only rooms but not pillars.
内蒙古地区很多煤炭生产基地多利用房式开采体系，只采煤房，不采煤柱。
In the future increasing quantities of coal will be converted into gas, coke and other by-products .
将来，煤将越来越多地用来制造煤气、焦炭和其它副产品。
Status and Industrial Development Prospect of Local Coal Transportation and Sale System in Shanxi Province
山西地方煤炭运销系统动力配煤现状及产业化发展前景
Study on the Regularity of Leaching, Releasing and Transfer of Carcinogen Chromium of Coal and Its Products in Rich Coal Area of Yunnan Province;
云南富煤地区煤及产物中致癌物铬淋溶释放及迁移规律的研究
Study on progress of Clean Coal Technology (CCT) in China coal bases and industry development
中国煤炭基地洁净煤技术(CCT)进步及产业化发展研究(一)
The light and heat energy from coal also comes from the sun in a roundabout way.
煤所产生的光能和热能也间接地来自太阳。
The light and heat energy from coal comes from the sun in a roundabout way.
煤所产生的光能和热能间接地来自太阳。
The Characteristics of Coal Reservoirs and Evaluation of Coalbed Methane Enrichment and High-Productivity in QinShui Basin of ShanXi Province;
山西沁水盆地煤岩储层特征及高产富集区评价
Financial Study and Analysis on Investment of Lu-mei Group Real Property Development;
鲁煤集团房地产开发投资财务分析研究
