元宝山露天煤矿煤层煤质特征及洁净等级划分  

Characteristics and cleanliness class of coal seam in Yuanbaoshan open-pit coal mine

作　　者：何保[1] 李振南[1] HE Bao;LI Zhennan(College of Mining Engineering ,Liaoning Technical Universlty ,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000

出　　处：《洁净煤技术》2017年第6期26-31,共6页Clean Coal Technology

基　　金：国家自然科学基金资助项目(51374121)

摘　　要：为了合理清洁利用元宝山露天煤矿的煤,基于元宝山露天煤矿地质概况、含煤地层特征及煤的物化性质,对矿区煤的煤质特征进行工业分析,确定煤的类型、工业性能和用途,根据最新煤炭资源潜力评价提出的煤炭洁净等级6级划分方案,选取灰分、硫分、有害元素氟、砷等4个评价因子对矿区煤的洁净等级进行初步划分。结果表明:矿区煤的宏观煤岩组分以亮煤和暗煤为主,显微煤岩组分以镜质组为主;矿区煤属低灰、中硫、高挥发分、中发热量型的2号褐煤;矿区主要煤层5煤、6煤洁净等级为Ⅲ~Ⅳ级,属较好~中等洁净煤,总体煤洁净等级为Ⅳ级,属中等洁净煤。由于矿区煤为中发热量、热稳定性较差,且与CO_2化学反应性好、焦油产率较高、中等洁净的煤样,煤炭质量和洁净等级较好,可作为动力用煤、气化用煤和炼油用煤原料,经济价值较大。In order to use the coal from Yuanbaoshan open-pit coal mine reasonably and cleanly, the coal quality was analyzed based on general geology,characteristics of coal-bearing strata and coal physico-chemical property. The type, industrial properties and utilization approaches of such coal were determined. According to the new coal resource potential evaluation of the proposed coal cleanliness class scheme grade 6, the cleanliness of this mining area coal seam was drew primarily from the aspects of ash, sulfur, F and As contents. The re- sults show that clarain and durain are the main lithotypes of the mining area coal. Huminite is the main maceral of this mining area coal. The low ash, medium sulfur and high volatile contents, as well medium calorific value of No. 2 lignite are the typical coal characteristics in this mining area. The cleanliness class of main coal seam 5 and 6 is m-IV ,which belongs to the better-medium clean coal. The cleanli- ness class of the mining area coal is IV ,which belongs to the medium clean coal. Because of its medium calorific value ,poor thermal stabil- ity, great chemical reactivity with CO2, higher tar yield and medium cleanliness, the quality of this lignite is thought be better. The lignite can be used as a raw material for combustion, gasification and coking with a greater economic value.

关 键 词：元宝山露天煤矿 煤质特征 洁净等级 工艺性能 工业用途 

分 类 号：TQ533[化学工程—煤化学工程]