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石煤提钒配煤焙烧试验研究 胡杨甲1,黄晶1,刘涛1,张一敏1,朱晓波1,李望1 (1.武汉科技大学,资源与环境工程学院,湖北,武汉,430081) 摘要:以江西某地石煤为试验原料,采用氧化焙烧-水浸-酸浸工艺提取其中的钒,研究了原矿直接氧化焙烧及原矿经脱碳后氧化焙烧对浸出率的影响,原矿及脱碳样配煤氧化焙烧对浸出率和焙烧能耗的影响.结果表明,原矿经脱碳后氧化焙烧浸出率为80.12%,较原矿直接氧化焙烧提高11.71%;脱碳样配入5%的无烟煤,浸出率可达81.96%,氧化焙烧温度可降低30 ℃,焙烧时间缩短0.5 h,降低了生产成本. 关键词:石煤; 钒; 焙烧; 无烟煤; 浸出率; stone coal; vanadium; roasting; anthracite; leaching rate; [全文内容正在添加中] ......
Extended DLVO theory applied to coal slime-water suspensionsZHANG Ming-qing (张明青)1 , LIU Qi (刘颀)2, LIU Jiong-tian (刘炯天)3(1. School of Environment Science and Spatial Informatics, China University... and Technology, China University of Mining & Technology, Xuzhou 221116, China)Abstract:Coal slimes are mainly composed of coal and clay particles. The interaction energies among these particles were......
J. Cent. South Univ. (2018) 25: 448-460 DOI: https://doi.org/10.1007/s11771-018-3749-0 Prediction of upper limit position of bedding separation overlying a coal roadway within an extra-thick coal seam YAN Hong(严红)1, ZHANG Ji-xiong(张吉雄)1, LI Lin-yue(李林玥)2,FENG Rui-min(冯锐敏)3, LI Tian-tong(李天彤)1 1. State Key Laboratory of Coal Resource and Safe Mining, Key Laboratory of Deep Coal Resource Mining......
that the coordinate range in the load bearing area of a single coal pillar is [x1, x2], consisting of the length of coal pillar and the width of coal room, the stress in the single coal pillar...J. Cent. South Univ. (2017) 24: 1121-1132 DOI: 10.1007/s11771-017-3515-8 Stability and control of room mining coal pillars-taking room mining coal pillars of solid backfill recovery as an example......
Ability of rotary compactor in compacting consistent slabs and effect of rotary compaction on engineering properties of stone mastic asphalt mixturesRatnasamy Muniandy, Hamed Haghighi, Salihudin bin Hassim, Danial Moazami(Department of Civil Engineering, Universiti Putra Malaysia, Selangor 43400, Malaysia)Abstract:A new automatic rotary compactor and its abilities in compacting stone mastic......
J. Cent. South Univ. (2016) 23: 3262-3272 DOI: 10.1007/s11771-016-3392-6 Mode of overlying rock roofing structure in large mining height coal face and analysis of support resistance WU Feng-feng(吴锋锋), LIU Chang-you(刘长友), YANG Jing-xuan(杨敬轩) School of Mines, Key Laboratory of Deep Coal Resource of Mining of Ministry of Education (China University of Mining & Technology), Xuzhou 221116, China......
J. Cent. South Univ. Technol. (2011) 18: 374-380 DOI: 10.1007/s11771-011-0706-6 Modularized dry coal beneficiation technique based on gas-solid fluidized bed ZHAO Yue-min(赵跃民)1, LI Gong-min(李功民)2... Academy of Sciences, Beijing 100190, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: A 40-60 t/h modularized dry coal beneficiation process with a novel method......
石煤提钒焙烧工艺分析 周晓源1,宁华1,杜海营2,尚德龙3 (1.长沙有色冶金设计研究院,长沙,410011;2.北京奔驰-戴姆勒·克莱斯勒汽车有限公司,北京,100176;3.陕西建工集团设备安装工程有限公司,西安,710068) 摘要:分析研究石煤提钒焙烧过程及实现工业化的措施.石煤焙烧工艺过程的温度,时间,气氛是主要控制因素,石煤预选抛尾,加碳或脱碳,焙烧物料的制粒,入炉料配放添加剂等是重要的辅助措施. 关键词:冶金化工; 石煤提钒; 焙烧_亡艺; 炉窑; chemical metallurgy; vanadium extraction from stone coal; roasting technology; furnace; [全文内容正在添加中] ......
.最后,总结了石煤提钒的主要焙烧设备,其中流化床炉具有较好的发展前景. 关键词:石煤; 钒; 焙烧; 最佳焙烧条件; 流化床; stone coal; vanadium; roasting; optimum condition; circulating fluidized bed; [全文内容正在添加中] ......
石煤提钒钠化焙烧中烧结现象的研究 杨东1,刘涛1,张一敏1,陆岷1 (1.武汉科技大学资源与环境工程学院,湖北,武汉,430081) 摘要:选取湖北某地石煤作为试验原料, 通过测量焙砂的松装密度和一次水浸率来研究不同焙烧温度,添加剂的种类和用量对于石煤烧结的影响. 试验表明, 石煤钠化焙烧时, 随着温度的上升松装密度增加, 烧结越严重, 钒浸出率下降, 焙烧温度应控制在750 ℃左右之间. 在最佳温度时NaCl添加量不应超过6%, Na_2CO_3添加量不应超过4%, MX_3添加量不应超过5%, 否则也会引起较严重的烧结从而降低钒浸出率. 关键词:石煤; 焙烧; 烧结; 松装密度; 浸出率; stone coal; roasting; sintering; apparent density; leaching rate; [全文内容正在添加中] ......
