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影响混洗煤实际组成准确测定的因素分析
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作者 王卓 《煤质技术》 2012年第2期33-34,40,共3页
阐述了利用镜质组反射率测定区分不同变质程度的煤混洗时,由于不同产地、不同煤种中所含镜质组的比例不尽相同,镜质组反射率分布图中反映的各单种煤的理论含量不一定符合真实的比例,即进行混洗煤质量分析时,应结合各种分析手段对其进行... 阐述了利用镜质组反射率测定区分不同变质程度的煤混洗时,由于不同产地、不同煤种中所含镜质组的比例不尽相同,镜质组反射率分布图中反映的各单种煤的理论含量不一定符合真实的比例,即进行混洗煤质量分析时,应结合各种分析手段对其进行综合评价。 展开更多
关键词 混洗煤 镜质组反射率 变质程度 理论配比
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煤岩分析在焦化企业煤质评价方面的应用 被引量:2
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作者 王卓 《煤质技术》 2008年第2期1-3,共3页
介绍了煤岩分析在焦化企业评价煤质方面积累的一些经验,并探讨了煤岩分析设备在使用中应注意的问题,指出在煤质分析中综合煤岩分析和各项常规化验指标,则可更为客观地评价包括混洗煤在内的各种煤的煤质。
关键词 煤岩分析 煤质 镜质组反射率 混洗煤
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煤岩分析在焦化企业煤质鉴别中的作用
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作者 郭磊 和缓 《科技创新与应用》 2013年第9期43-44,共2页
介绍了煤岩分析在焦化企业评价煤质方面积累的一些经验,并探讨了煤岩分析设备在使用中应注意的问题,指出在煤质分析中综合煤岩分析和各项常规化验指标,则可更为客观地评价包括混洗煤在内的各种煤的煤质。
关键词 煤岩分析 煤质 镜质组反射率 混洗煤
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Coal washing improvement by determination of optimal mixture of feed blends 被引量:2
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作者 Bahri Zahra Shafaei Seyyed Ziaoddin +1 位作者 Kor Mohammad Sereshki Farhanga 《Mining Science and Technology》 EI CAS 2011年第6期819-822,共4页
Coals from different mines are feed in the Zirab plant without any control on weight percentage blending of them. Three major coal types of different ranks (Kiasar, Lavidj and Karmozd) were blended in various proporti... Coals from different mines are feed in the Zirab plant without any control on weight percentage blending of them. Three major coal types of different ranks (Kiasar, Lavidj and Karmozd) were blended in various proportions to find an optimum condition in flotation circuit in Alborz Markazi coal washing plant. Flotation tests were conducted for prepared blended coal samples to assess floatability of various coal samples. In this paper, mixture design as a statistical method was used to optimize coal blend to increase recovery and grade in Zirab coal washing plant. The statistical analysis showed that the weight percent blending of different coals and interaction between Lavidj and Karmozd regions coal had significant effects on the coal recovery. The optimum condition of 95% recovery and 12% ash content could be reached with 10%, 20%, and 70% blending portion of Kiasar, Lavidj and Karmozd regions coal, respectively. 展开更多
关键词 Coal blend Coal flotation Optimization Statistical design
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Evaluation of Mayer curve validity on feed blending at the Zarand coal washery plant
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作者 Habetinejad Hamidreza Jorjani Esmaeil Sam Abbas 《International Journal of Mining Science and Technology》 2012年第1期19-22,共4页
The coal processing methods used at the Zarand coal washery plant are the heavy medium bath,jigs,and flotation.The coal-containing materials that are fed to the plant are acquired from different mines,and they have di... The coal processing methods used at the Zarand coal washery plant are the heavy medium bath,jigs,and flotation.The coal-containing materials that are fed to the plant are acquired from different mines,and they have different washability properties.In this paper,the validity of Mayer curve (M-curve),the conventional method for determining coal washability,was evaluated on blending of raw coals that are fed to the plant.Washability curves were prepared for the hand-blended samples and compared with the washability predicted by the Mayer curves.Different samples from different seams and mines were blended by hand in 50:50 ratios,and sink and float tests were performed;the resulting washability curves were in good agreement with the washability curves predicted using the Mayer method for the same blending ratio.This work resulted in the preparation of the optimum plant feed that can be achieved from the blending of different coal samples to produce the best plant yield at a given ash content. 展开更多
关键词 COAL Dense medium separation Gravity concentration Mayer curve
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