This paper sums up the cause,form and quantity of top coal loss by analyzing thefeature of fully-mechanized sublevel caving mining.
通过对综放开采特点的分析，总结出顶煤损失的原因、形式、数量等规律，为提高顶煤回收率及保证安全生产提出了建议。
The mass loss of coal particles and release of C,H,N in coal at high temperature flue gas are measured,and the morphological changes of chars formed from the devolatilized coal particles are observed by scanning electron microscope(SEM) and physical adsorption of nitrogen.
结果表明,随着煤阶的降低,其煤焦比表面积和总孔容均升高,小龙潭褐煤增加最多,六枝贫煤增加最少;随着煤粉初始挥发分含量的增加和热解烟气温度升高,煤的质量损失增加,烟气气氛对煤粉质量损失份额影响较小;在实验条件下,煤中C、N析出份额与煤的质量损失份额基本相同,H释放份额远大于C、N和煤质量损失,达80%以上。
The theoretical study on loss rate of top coal and quantitative characteristics of piled waste
放煤损失率与冒落矸石堆积特征间量化规律的理论研究
Determination of loss in weight of montan wax
GB/T3815-1983褐煤蜡加热损失量测定方法
A Study on the Model for Calculation of Coalmine Safety Accident Loss in China
中国煤矿安全事故损失计算模型研究
Research on the Wear Failure of Colliery Hoister Journal Bearing
煤矿提升机滑动轴承的磨损失效分析
Ecological and Environmental Damage in Coal Exploitation in Northern Shaanxi;
陕北煤炭资源开采过程中的生态环境损失
Study on Simulation Experiment and Estimate Model for Coalbed Methane Lost Gas Content
煤层气损失气含量模拟试验及估算模型探讨
Experimental study on pressure loss feature of coal slurry pipeline transportation
煤泥管道输送压力损失特性的试验研究
Simulation experiment and result analysis on lost gas content of coalbed methane
煤层气损失气含量模拟试验及结果分析
The analysis of safety economic benefit and accident losses in private coal mine in Guizhou
贵州私营煤矿事故损失与安全经济效益分析
Resistance Loss and Equal Allocation of Coal-Water Slurry Flowing Through Local Fittings
水煤浆流经局部管件的阻力损失和均配规律
Analysis of Safety Economy Benefit and the Mining Accident Losing in Guizhou Province
贵州煤矿事故损失与安全经济效益分析
Design and Realization of the Coal Mine Three Coal Reserves and Loss Management Information System
煤矿三量及损失量管理信息系统的设计与实现
Influences of Coal Mining Subsidence on Soil Water Loss and Its Mechanisms
采煤塌陷对土壤水分损失影响及其机理研究
Applying the Benefit Transfer Method to Evaluating Environmental Loss in Coal Resource Exploitation in Northern Shaanxi;
效益转移在陕北煤炭开发环境损失评估中的应用
STUDY ON THE DISTORTION OF PROFIT AND LOSS ACCOUNTING INFORMATION OF LISTED COMPANIES AND ITS INSPIRATION TO COAL ENTERPRISES;
剖析损益类会计信息的失真及其对煤企的借鉴与启示
Discussion on total moisture bias and total moisture loss in mechanical sampling of coal
煤炭机械化采样全水分偏倚与全水分损失的探讨
Large loss of converter gas has been an urgent problem to be solved which puzzles the converter gas system of Baoshan Iron& Steel Company.
转炉煤气损失率高的问题一直是困扰宝钢转炉煤气系统的迫切需要解决的问题。
cover (up) a loss
弥补损失，掩盖损失