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煤矿煤炭洗选加工方法分析
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作者 李路 《中国科技期刊数据库 工业A》 2024年第11期175-178,共4页
煤炭作为组成我国能源结构的关键一环,在火电、工业等领域发挥着基础性作用,新时期,虽然清洁能源的使用频次有所增加,但仍旧无法撼动煤炭的地位。文章以此为背景,针对煤炭的加工方法展开了讨论,在说明洗选加工影响因素的基础上,详细介... 煤炭作为组成我国能源结构的关键一环,在火电、工业等领域发挥着基础性作用,新时期,虽然清洁能源的使用频次有所增加,但仍旧无法撼动煤炭的地位。文章以此为背景,针对煤炭的加工方法展开了讨论,在说明洗选加工影响因素的基础上,详细介绍了重介法及跳汰法的原理、设备、步骤还有注意事项。希望能够给其他从业人员以帮助,为日后洗选加工煤炭的工作提供可靠参考。 展开更多
关键词 煤矿煤炭 洗选加工 重介法 跳汰法
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煤矿煤炭洗选加工方法的研究 被引量:3
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作者 朱令强 张勇 《内蒙古煤炭经济》 2020年第2期60-60,共1页
山东裕隆矿业集团有限公司唐阳煤矿是山东省“十佳”煤矿,矿井西临105国道,南距济宁25千米,井田面积17平方千米,井田属于济宁市宁阳—汶上煤田唐阳井田,配套入洗120万吨/年重介浮选洗煤厂。本文将依据山东裕隆矿业集团有限公司唐阳煤矿... 山东裕隆矿业集团有限公司唐阳煤矿是山东省“十佳”煤矿,矿井西临105国道,南距济宁25千米,井田面积17平方千米,井田属于济宁市宁阳—汶上煤田唐阳井田,配套入洗120万吨/年重介浮选洗煤厂。本文将依据山东裕隆矿业集团有限公司唐阳煤矿入洗原煤120万吨,研究煤款煤炭洗选加工方法。 展开更多
关键词 煤矿煤炭 洗选加工 方法研究
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安全高效实现跨越式发展——记山西兰花煤炭实业集团有限公司大阳煤矿
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作者 赵二进 周瑜峰 《中国煤炭工业》 2008年第8期79-80,共2页
大阳煤矿是山西兰花煤炭实业集团有限公司的重点煤炭企业,是兰花集团第一利税大户和首座安全高效矿井,固定资产2.8亿元,年生产能力达150万吨。近年来,大阳煤矿不断创新管理理念,以安全促生产,以技改增效益,走出了一条有大阳特... 大阳煤矿是山西兰花煤炭实业集团有限公司的重点煤炭企业,是兰花集团第一利税大户和首座安全高效矿井,固定资产2.8亿元,年生产能力达150万吨。近年来,大阳煤矿不断创新管理理念,以安全促生产,以技改增效益,走出了一条有大阳特色的发展之路。实现了30到60万吨、60到90万吨、90到150万吨的三级跨越。利税从3000多万元递增到3亿元,人均年收入从4000余元达到2.8万元以上,安全形势趋于稳定,企业规模和现代化水平越来越高,成为山西省晋城市煤炭行业的一面旗帜。 展开更多
关键词 安全形势 煤炭企业 跨越式发展 煤矿 山西兰花煤炭实业集团有限公司大阳煤矿
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贵州威宁煤炭沟矿区构造特征分析
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作者 张博 刘从义 +1 位作者 窦延宝 徐强 《资源信息与工程》 2017年第3期51-52,55,共3页
煤炭沟矿区地处六盘水断陷,紫云—垭都断裂南西侧,威水背斜南西翼,格目底向斜南西翼北西段,其构造形态为在断层影响下略呈一背斜构造。区内发育北西向及南北向断层,以北西向断层为主。矿区构造受北西向的区域构造控制和作用,构造特征明... 煤炭沟矿区地处六盘水断陷,紫云—垭都断裂南西侧,威水背斜南西翼,格目底向斜南西翼北西段,其构造形态为在断层影响下略呈一背斜构造。区内发育北西向及南北向断层,以北西向断层为主。矿区构造受北西向的区域构造控制和作用,构造特征明显。分析矿区构造形态特征,为今后煤炭沟区域内煤炭资源勘探开发提供一定的地质依据。 展开更多
关键词 煤炭煤矿 断层 构造特征
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露天矿煤层自燃防灭火方法 被引量:4
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作者 王航龙 杨溢 +2 位作者 李永亮 马娟 李卫 《科技资讯》 2007年第33期9-,共1页
依据露天煤矿赋存的自然地理条件及开采工艺,通过几种有效的方法,对矿坑内及坑内堆煤场地煤炭的自燃进行处理,以减少煤炭资源的损失。
关键词 露天煤矿煤炭自燃灭火
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Modelling spontaneous combustion liability of carbonaceous materials 被引量:8
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作者 M. Onifade B. Genc 《International Journal of Coal Science & Technology》 EI 2018年第2期191-212,共22页
This paper presents predictive models to determine spontaneous combustion liability of carbonaceous materials (coals and coal-shales) using statistical analysis. The intrinsic properties and spontaneous combustion l... This paper presents predictive models to determine spontaneous combustion liability of carbonaceous materials (coals and coal-shales) using statistical analysis. The intrinsic properties and spontaneous combustion liability index were determined by testing 14 coals and 14 coal-shales from Witbank coalfields, South Africa. The relationship between these intrinsic properties (obtained from proximate, ultimate and petrographic analysis) and spontaneous combustion liability indices (the Wits-Ehac Index and Wits-CT Index) were established. The influence of the intrinsic properties of coal-shales in relation to coal properties affecting spontaneous combustion has been established using a statistical method. The linear regression analysis indicates better linear relationships between some of the selected intrinsic properties and spontaneous combustion liability index and thus, identifies the major intrinsic factors affecting their liability toward spontaneous combustion. It was found that a definite positive or negative correlation coefficient exists between the intrinsic factors and spontaneous combustion liability. A set of models to predict the spontaneous combustion liability was derived. The best significant correlation along with the most appropriate model as indicated by R-squared values, the coefficient of corre- lations and standard error was used to predict the incident of spontaneous combustion. 展开更多
关键词 COALS Coal-shales Statistical analysis Wits-Ehac Index Wits-CT Index Spontaneous combustion
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A remining technology of underground coal gasification at Zhongliangshan Coal Mine 被引量:4
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作者 王作棠 丁学平 +2 位作者 霍礼文 王国雄 Rudolph 《Journal of Coal Science & Engineering(China)》 2008年第3期469-473,共5页
The field trail used a mixture of steam and air with various levels of oxygen en- richment.Steady conditions were achieved in the field trail which produced high quality hydrogen-enriched syngas.To understand and opti... The field trail used a mixture of steam and air with various levels of oxygen en- richment.Steady conditions were achieved in the field trail which produced high quality hydrogen-enriched syngas.To understand and optimize the UCG process,a simplified heat and mass transfer model was presented,providing a predictive tool for temperature and the major constituents of the syngas production.The model is compared with the field trail measurements for air and two levels of oxygen enrichment,showing reasonable agreement for the channel temperature and product syngas concentration profile. 展开更多
关键词 remining technology underground coal gasification (UCG) field trail controlled moving injector
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Steam gasification reactivity of a high-sodium coal fly ash obtained from a pilot scale CFB gasifier 被引量:4
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作者 Haixia Zhang Kuangshi Yu Zhiping Zhu 《International Journal of Coal Science & Technology》 EI 2018年第2期244-252,共9页
Circulating fluidized bed (CFB) gasification has several advantages for the utilization of low rank coals. However, the carbon content of fly ash is usually very high, which greatly infuences the gasification effici... Circulating fluidized bed (CFB) gasification has several advantages for the utilization of low rank coals. However, the carbon content of fly ash is usually very high, which greatly infuences the gasification efficiency. The purpose of this research is to investigate the gasification reactivity of a high-sodium Zhundong (ZD) coal fly ash obtained from a pilot-scale 2.5 t/d CFB gasification system. The experiments were carried out in a thermogravimetric analyzer with steam as gasification agent, and fast pyrolyzed ZD char was also investigated as a reference sample. The results show that increasing temperature accelerates the gasification rate both for fly ash and ZD char. Fly ash has higher gasification rate at the initial gasification stage. On the contrary, ZD char has higher reaction rate even at higher carbon conversion stage. Via distributed activation energy model, the average activation energy of ZD char and fly ash is calculated to be 94.4 and 91.2 kJ/mol, respectively. The integrated model study reveals that the reaction order of ZD char is about 0.74, whereas the reaction order of fly ash decreases from 1 to 0.59 when temperature increases from 900 to 1050 ℃. The gasification reactivity of ZD coal fly ash is quite different with literature research on those fly ashes with rarely little catalytic elements in coal ashes. The interesting results are related with the unique properties of ZD coal fly ash and the transformation of sodium during gasification process. 展开更多
关键词 Fly ash High sodium coal GASIFICATION CFB TGA
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Research on microseismic activity rules in Sanhejian Coal Mine 被引量:4
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作者 陆菜平 窦林名 +1 位作者 曹安业 吴兴荣 《Journal of Coal Science & Engineering(China)》 2008年第3期373-377,共5页
By the microseismic (MS) monitoring system of Sanhejian Coal Mine,the detail MS activity rules in the entire mining process of 9202 strong rockburst working face were studied,following main conclusions were obtained.(... By the microseismic (MS) monitoring system of Sanhejian Coal Mine,the detail MS activity rules in the entire mining process of 9202 strong rockburst working face were studied,following main conclusions were obtained.(1) The strong correlation between MS activity and the region stress gradient was revealed.The higher the region stress gradient, the stronger the MS signal is,and the frequency-spectrum moves to lower frequency band the amplitude begins to add gradually.(2) The different types of MS signals have the cor- responding frequency-spectrum character.Such as relieve-shot MS signal shows the wide frequency-spectrum,multi-peak high frequency character,while rockburst omen signal shows the low frequency and amplitude,the mainshock signal has relatively higher fre- quency and amplitude.(3) To monitor and recognize rockburst dangerous region,the strong consistence between the MS signal intensity and the amplitude of electromagnetic emission (EME) signal and drilling bits measured was observed.On above,the weakening and controlling technology of MS intensity was put forward. 展开更多
关键词 microseismic activity rules ROCKBURST stress gradient mining engineering
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Study on Critical,Modern Technology for Mining in Gassy Deep Mines 被引量:10
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作者 YUAN Liang 《Journal of China University of Mining and Technology》 EI 2007年第2期226-231,共6页
To achieve safe and highly efficient mining in the gassy, deep mines of the Huainan collieries simultaneous coal and gas extraction, and the corresponding ventilation methods were developed. This includes a set of min... To achieve safe and highly efficient mining in the gassy, deep mines of the Huainan collieries simultaneous coal and gas extraction, and the corresponding ventilation methods were developed. This includes a set of mining procedures and principles which help insure safe and efficient production. Furthermore, green mining, meaning the comprehensive use of emitted gas, proper treatment of the environment and appropriate mine temperature control, is now standard. The concepts of modem mining and the principles of pressure relief are described. Coal-gas simultaneous ex- traction and multi-pressure relief techniques were developed which require a combination of surface and underground gas extraction. The application of Y-ventilation systems, of roadways retained along goafs, of stress control techniques for highly fragile mine roofs and of powerful, automatic and reliable mining equipment contributes to safe operation of modem deep mines. Operating parameters for these techniques are described and the results of their use discussed. 展开更多
关键词 gassy deep mining modem mining intrinsic safety coal and gas simultaneous extraction green mining
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励精图治 加快发展
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作者 林木生 董强 《中国职业技术教育》 2004年第35期50-50,共1页
我院的前身--煤炭部萍乡煤矿学校成立于1956年初.上个世纪90年代我校曾两度跻身"国家级重点中专"行列,并连续四届八年被授予"省级文明单位"称号.至今,我校为全国煤炭及其他各条战线培养了近4万名本科、大专和中专... 我院的前身--煤炭部萍乡煤矿学校成立于1956年初.上个世纪90年代我校曾两度跻身"国家级重点中专"行列,并连续四届八年被授予"省级文明单位"称号.至今,我校为全国煤炭及其他各条战线培养了近4万名本科、大专和中专毕业生;是一所以高职教育为主、面向全国招生、兼有远程本科教育和成人教育、拥有30多个专业、各类学生1万多人的多学科综合性职业技术学院. 展开更多
关键词 煤炭部萍乡煤矿学校 高等职业教育 办学规模 以人为本
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Groundwater Pollution from Underground Coal Gasification 被引量:39
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作者 LIU Shu-qin LI Jing-gang MEI Mei DONG Dong-lin 《Journal of China University of Mining and Technology》 EI 2007年第4期467-472,共6页
In situ coal gasification poses a potential environmental risk to groundwater pollution although it depends mainly on local hydrogeological conditions. In our investigation,the possible processes of groundwater pollut... In situ coal gasification poses a potential environmental risk to groundwater pollution although it depends mainly on local hydrogeological conditions. In our investigation,the possible processes of groundwater pollution origi-nating from underground coal gasification (UCG) were analyzed. Typical pollutants were identified and pollution con-trol measures are proposed. Groundwater pollution is caused by the diffusion and penetration of contaminants generated by underground gasification processes towards surrounding strata and the possible leaching of underground residue by natural groundwater flow after gasification. Typical organic pollutants include phenols,benzene,minor components such as PAHs and heterocyclics. Inorganic pollutants involve cations and anions. The natural groundwater flow after gasification through the seam is attributable to the migration of contaminants,which can be predicted by mathematical modeling. The extent and concentration of the groundwater pollution plume depend primarily on groundwater flow ve-locity,the degree of dispersion and the adsorption and reactions of the various contaminants. The adsorption function of coal and surrounding strata make a big contribution to the decrease of the contaminants over time and with the distance from the burn cavity. Possible pollution control measures regarding UCG include identifying a permanently,unsuitable zone,setting a hydraulic barrier and pumping contaminated water out for surface disposal. Mitigation measures during gasification processes and groundwater remediation after gasification are also proposed. 展开更多
关键词 groundwater pollution underground coal gasification STRATA
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The three-factor model of evaluating mining rights of coal resources based on options 被引量:2
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作者 张金锁 邹绍辉 《Journal of Coal Science & Engineering(China)》 2008年第3期507-511,共5页
Since mining rights of coal resources(for short MRCR) could be regarded as a multi-stage compound real option,the evaluation for MRCR can be better solved using op- tion theory than the NPV.In the former research,we d... Since mining rights of coal resources(for short MRCR) could be regarded as a multi-stage compound real option,the evaluation for MRCR can be better solved using op- tion theory than the NPV.In the former research,we developed a two-factor model of evaluating MRCR when the coal spot price and convenience yield are stochastic based on option theory.On the basis of this two-factor model,we set up a three-factor model of evaluating MRCR when the interest rate followed a stochastic process.Through a real example application,we found the model can get higher values than the two-factor model and the NPV.This is because considering the volatility of interest rate can improve the executive opportunity of MRCR. 展开更多
关键词 mining rights coal resources real option EVALUATION stochastic interest rate
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Effects of caving–mining ratio on the coal and waste rocks gangue flows and the amount of cyclically caved coal in fully mechanized mining of super-thick coal seams 被引量:7
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作者 Zhang Ningbo Liu Changyou Pei Mengsong 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2015年第1期145-150,共6页
Aimed at determining the appropriate caving–mining ratio for fully mechanized mining of 20 m thick coal seam, this research investigated the effects of caving–mining ratio on the flow fields of coal and waste rocks,... Aimed at determining the appropriate caving–mining ratio for fully mechanized mining of 20 m thick coal seam, this research investigated the effects of caving–mining ratio on the flow fields of coal and waste rocks, amount of cyclically caved coal and top coal loss by means of numerical modeling. The research was based on the geological conditions of panel 8102 in Tashan coal mine. The results indicated the loose coal and waste rocks formed an elliptical zone around the drawpoint. The ellipse enlarged with decreasing caving–mining ratio. And its long axis inclined to the gob gradually became vertical and facilitating the caving and recovery of top coal. The top coal loss showed a cyclical variation; and the loss cycle was shortened with the decreasing in caving–mining ratio. Moreover, the mean squared error(MSE) of the amount of cyclically caved coal went up with increasing caving–mining ratio, indicating a growing imbalance of amount of cyclically caved coal, which could impede the coordinated mining and caving operations. Finally it was found that a caving–mining ratio of 1:2.51 should be reasonable for the conditions. 展开更多
关键词 Caving-mining ratioCoal and waste rocks flowsAmount of cyclically caved coalZone of loose coal and waste rocks
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Management present situation and countermeasures of coal mines safety in production 被引量:1
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作者 张树东 于常武 《Journal of Coal Science & Engineering(China)》 2008年第2期326-328,共3页
Analyzed of the present situation of Chinese coal mines safety in production and the reasons for coal mining accident,and realized the coal mines safety in production, which should increase the legal safeguards of coa... Analyzed of the present situation of Chinese coal mines safety in production and the reasons for coal mining accident,and realized the coal mines safety in production, which should increase the legal safeguards of coal mine safety in production,and safety input,established the comprehensive coal mine safety evaluation system,comprehen- sively enhance quality of coal mine workers,established and improved early warning me- chanism of safety production of coal mine. 展开更多
关键词 coal mine safety COUNTERMEASURES present situation MANAGEMENT
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Informationization of coal enterprises and digital mine 被引量:3
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作者 卢建军 王晓路 +1 位作者 马莉 赵安新 《Journal of Coal Science & Engineering(China)》 2008年第3期512-516,共5页
Analyzed the main problems which were found in current conditions and prob- lems of informationization in coal enterprises.It clarified how to achieve informationization in coal mine and put forward a general configur... Analyzed the main problems which were found in current conditions and prob- lems of informationization in coal enterprises.It clarified how to achieve informationization in coal mine and put forward a general configuration of informationization construction in which informationization in coal enterprises was divided into two parts: informationization of safety production and informationization of management.Planned a platform of inte- grated management of informationization in coal enterprises.Ultimately,it has brought forward that an overall integrated digital mine is the way to achieve the goal of informa- tionization in coal enterprises,which can promote the application of automation,digitaliza- tion,networking,informaitionization to intellectualization.At the same time,the competi- tiveness of enterprises can be improved entirely,and new type of coal industry can be supported by information technology. 展开更多
关键词 informationization coal enterprises digital mine safety production MANAGEMENT
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Research on dynamic updating of three dimensional geological modeling based on the OO-Solid model 被引量:1
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作者 侯恩科 邓念东 +1 位作者 张志华 赵洲 《Journal of Coal Science & Engineering(China)》 2008年第3期420-424,共5页
The dynamic updating of the model included: the change of space border,addi- tion and reduction of spatial component (disappearing,dividing and merging),the change of the topological relationship and synchronous dynam... The dynamic updating of the model included: the change of space border,addi- tion and reduction of spatial component (disappearing,dividing and merging),the change of the topological relationship and synchronous dynamic updating of database.Firstly, arming at the deficiency of OO-Solid model in the aspect of dynamic updating,modeling primitives of OO-Solid model were modified.And then the algorithms of dynamic updating of 3D geological model with the node data,line data or surface data change were dis- cussed.The core algorithms was done by establishing space index,following the way of facing the object from bottom to top,namely the dynamic updating from the node to arc, and then to polygon,then to the face of the component and finally to the geological object. The research has important theoretical and practical values in the field of three dimen- sional geological modeling and is significant in the field of mineral resources. 展开更多
关键词 digital mine three dimensional geological modeling OO-Solid model dynamic updating
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Green fuel from coal via Fischer-Tropsch process: scenario of optimal condition of process and modelling
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作者 Hossein Atashil Somayyeh Veiskarami 《International Journal of Coal Science & Technology》 EI 2018年第2期230-243,共14页
Extracting, transportation and the using from fossil fuels can damage to the hydrosphere, the biosphere and the Earth's atmosphere. But humans always need to this valuable substance. The production of oil derivatives... Extracting, transportation and the using from fossil fuels can damage to the hydrosphere, the biosphere and the Earth's atmosphere. But humans always need to this valuable substance. The production of oil derivatives by means of forest waste and coal through the Fischer-Tropsch process is an appropriate solution for the cleanliness of all parts of the environment. For the production of favorite products by the synthesis of Fischer-Tropsch, the performance of the catalyst under different operating conditions should be predictable. For this reason, in this paper, eight mathematical models were determined for the selectivity of five products of methane, light hydrocarbons, gasoline, diesel and wax based on three factors of reduction temperature, time on stream, and He/CO ratio inlet gas on iron-based catalyst. The results showed that the reduction temperature factor had the most effective on the selectivity of hydrocarbon products, exception diesel, so that the increase of the reduction temperature led to increase of the selectivity of methane, light hydrocarbons, gasoline and reduce of the degree of selectivity of the wax and vice versa. For the diesel selectivity, factor of the He/CO ratio inlet gas was the most effective than other factors. 展开更多
关键词 Fischer-Tropsch process - Selectivity model Iron based catalyst BIOMASS Oil derivatives
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Development of a spontaneous combustion TARPs system based on BP neural network 被引量:7
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作者 Wang Longkang Ren Tingxiang +4 位作者 Nie Baisheng Chen Yang Lv Changqing Tang Haoyang Zhang Jufeng 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2015年第5期803-810,共8页
Spontaneous combustion of coal is a major cause of coal mine fires.It not only poses a severe hazard to the safe extraction of coal resources,but also jeopardizes the safety of mine workers.The development of a scient... Spontaneous combustion of coal is a major cause of coal mine fires.It not only poses a severe hazard to the safe extraction of coal resources,but also jeopardizes the safety of mine workers.The development of a scientific management system of coal spontaneous combustion is of vital importance to the safe production of coal mine.This paper provides a comparative analysis of a range of worldwide prediction techniques and methods for coal spontaneous combustion,and systematically introduces the trigger action response plans(TARPs)system used in Australian coal mines for managing the spontaneous heating of coal.An artificial neural network model has been established on the basis of real coal mine operational conditions.Through studying and training the neural network model,prediction errors can be controlled within the allowable range.The trained model is then applied to the conditions of Nos.1 and 3 coal seams located in Weijiadi Coal Mine to demonstrate its feasibility for spontaneous combustion assessment.Based upon the TARPs system which is commonly used in Australian longwall mines,a TARPs system has been developed for Weijiadi Coal Mine to assist the management of spontaneous combustion hazard and ensure the safe operation of its mining activities. 展开更多
关键词 Neural network Coal spontaneous combustion TARPs Safety management
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Occurrence, predication, and control of coal burst events in the U.S. 被引量:13
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作者 lannacchione Anthony T. Tadolini Stephen C. 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2016年第1期39-46,共8页
Coal burst represented a major hazard for some U.S. mining operations. This paper provides an historical review of the coal burst hazards,identifies the fundamental geological factors associated with these events,and ... Coal burst represented a major hazard for some U.S. mining operations. This paper provides an historical review of the coal burst hazards,identifies the fundamental geological factors associated with these events,and discusses mechanisms that can be used to avoid their occurrences. Coal burst are not common in most underground mines. Their occurrence almost always has such dramatic consequences to a mining operation that changes in practice are required. Fundamental factors influencing coal burst events include strong strata,abnormal strata caving,elevated stresses,critical size pillars and the lack of sufficiently sized barrier pillars during extraction. These factors interact to produce excessive stress,seismic shock and loss of confinement mechanisms. Over the 90 years of dealing with these hazards,many novel prevention controls have been developed including novel mine designs and extraction sequences,most of which are site specific in their application. Without an accurate assessment of the fundamental factors that influence coal burst and knowledge of their mechanisms of occurrence,control techniques may be misapplied and risk inadequately mitigated. 展开更多
关键词 Coal burstCoal bounceSeismicityCoal bump
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