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Application of vanadium ion indicator electrode in leaching kinetics study of roasted stone coal LI Yuan-gao1, 2, ZENG Meng-xiang1, ZHANG Ping-min1 (1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; 2. Department of Environmental Engineering, Xiamen University of Technology, Xiamen 361005, China) Abstract: After 6 h baking of stone coal from Jishou......
Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phaseXin Wang1,2,Hai Lin3,2,Ying-bo Dong3,2,Gan-yu Li1,21. School of Civil and Resource Engineering, University of Science and Technology Beijing2. Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants3. School of Energy and Environmental Engineering......
巯基棉富集分光光度法测定石煤渣中痕量钽罗道成1,刘俊峰1(1.湖南省湘潭市湖南科技大学化学化工学院)摘 要:痕量钽(被巯基棉预富集后用分光光度法进行测定.在H2SO4介质中,Triton X-100存在下,钽(与丁基罗丹明B(BRB)发生显色反应,生成摩尔比为1∶1的稳定络合物,络合物的最大吸收波长为565 nm,表观摩尔吸光系数为1.46×105 L·mol-1·cm-1,钽的质量浓度在0600μg/L范围内符合比尔定律.经巯基棉富集后,钽的测定灵敏度可提高数倍,大量共存离子不干扰钽的测定.建立的方法应用于石......
硅质石煤钒矿无污染氧化剂氧化-酸浸法提钒工艺研究孙德四1,孙剑奇1,张贤珍1(1.江西省九江市九江学院化学化工学院江西省鄱阳湖生态经济研究中心)摘 要:通过单因素条件试验确定了"氧化剂氧化-硫酸浸出提钒工艺"的最优工艺参数.试验结果表明,在氧化剂二氧化锰用量为5%,硫酸浓度为40%,浸出温度为90℃,矿物粒度-74μm,浸出时间为9h,液固比为2.5∶1的条件下,钒的浸出率可达72.4%.比起传统的钠化焙烧工艺高出10%以上.关键词:硅质石煤钒矿; 氧化剂; 酸浸出; 提钒......
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Trans. Nonferrous Met. Soc. China 24(2014) 528-535 Loose-stratification model in separation process for vanadium pre-concentration from stone coal Yun-liang ZHAO, Yi-min ZHANG, Shen-xu BAO, Tao LIU...; stone coal; separation process 1 Introduction In China, vanadium is mainly recovered from vanadium-titanium magnetite ore and stone coal. The gross reserve of vanadium in terms of V2O5 in stone coal......
Trans. Nonferrous Met. Soc. China 29(2019) 849-858 Improving vanadium extraction from stone coal via combination of blank roasting and bioleaching by ARTP-mutated Bacillus mucilaginosus Ying-bo...-oriented Treatment of Industrial Pollutants, Beijing 100083, China Received 7 May 2018; accepted 24 July 2018 Abstract: In order to improve leaching efficiency of vanadium from stone coal......
; Performance of cemented coal gangue backfill ZHANG Qin-li(张钦礼), WANG Xin-min(王新民) (School of Resources and Safety Engineering, Central South University, Changsha 410083, China) Abstract: Possibility of cemented gangue backfill was studied with gangue of Suncun Coal Mine, Xinwen Coal Group, Shandong, and fly ash of nearby thermal power plant, in order......
焦炭热性质加和性在配煤研究中的应用张启锋1,张代林2,夏红波1,余亮3,赵梅梅1,郑明东3(1.上海市宝山钢铁股份有限公司宝钢分公司制造管理部2.安徽工业大学 煤的洁净转化与综合利用安徽省重点实验室,安徽马鞍山 2430023.安徽工业大学 冶金工程与资源综合利用安徽省重点实验室,安徽马鞍山 243002)摘 要:结合配西加煤实验,提出了配煤所涉煤种对应的焦炭热性质(反应性/反应后强度)具有加和性的观点,在对方案中所涉及的变化煤种对应的焦炭热性质数据进行假定与修正的基础上,结合各方案中煤种比例,对各方案进行比较......
石煤中钒酸浸出工艺研究 兰新哲1,王耀宁1,陈向阳1,马红周1 (1.西安建筑科技大学冶金工程学院,陕西,西安,710055) 摘要:通过对陕西某地石煤钒矿的物相和化学成分分析, 依据矿物的特点确定用H_2SO_4溶液作为浸出剂从石煤钒矿中浸出钒. 实验主要研究了H_2SO_4浓度,浸出温度,液固比,浸出时间对石煤钒矿中钒的浸出率的影响. 结果表明, 在一定范围内钒的浸出率随H_2SO_4浓度及浸出温度的升高,浸出时间的延长而提高; 得出的较优条件为H_2SO_4浓度6.0 mol·L~(-1),浸出温度95 ℃,液固比为3∶ 1,浸出时间5 h, 可以使钒的浸出率达到93.83%. 关键词:石煤; 钒; 浸出; stone coal; vanadium; leaching; [全文内容正在添加中] ......