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软锰矿浆烟气脱硫与循环经济 廖磊1,丁桑岚1,孙峻1,苏仕军1 (1.四川大学,环境科学与工程系,四川,成都,610065) 摘要:从循环经济的角度着重论述了软锰矿浆烟气脱硫工艺的最新研究进展,包括反应机理,宏观动力学,反应器,吸收尾液和尾渣的综合利用.通过技术分析得出,利用软锰矿烟气脱硫副产电解锰和高纯碳酸锰,回收硫酸铵及尾渣综合利用生产水泥辅料的创新工艺体系是一条既环保又经济的新途径,开辟了循环经济模式在烟气脱硫领域的应用途径. 关键词:烟气脱硫; 软锰矿; 循环经济; [全文内容正在添加中] ......
and its crystallographic variety γ-MnO2 formed in the matrix of ramsdellite, which is largely used as cathodic material for primary batteries. However, the presence of pyrolusite in the structure......
:To research the agglomeration behavior of fine pyrolusite in magnetic field, the magnetic- hydrophobic agglomeration was studied using the fine pyrolusite flotation in magnetic field. According... flotation is obtained by using sodium oleate as collector after being magnetized. On the basis of the yield is increased slightly, MnO2 recovery is increased by 23%.Key words:fine pyrolusite......
菱锰矿与软锰矿混合矿浆烟气脱硫研究 胡响响1,刘云2,余自力1,丁桑岚1,孙峻1,苏仕军1 (1.国家烟气脱硫工程技术研究中心,四川,成都,610065;2.四川大学,分析测试中心,四川,成都,610065) 摘要:在高密度矿浆(液固比3:1)湿法烟气脱硫中,单组分菱锰矿很难较长时间维持较高的脱硫率,而单组分软锰矿在脱硫时锰浸出率低.针对这些问题,通过配制不同比例菱锰矿和软锰矿的混合矿浆,考察了其对脱硫率,锰浸出率和pH值的影响.研究表明:当混合矿浆中软锰矿与菱锰矿的质量比在1:1左右时,脱硫率与锰浸出率能同时达到80%以上的较好水平,研究结果可为锰矿资源在工业和环保领域的应用提供一条新......
process of bismuth sulfide ore and pyrolusite ZHANG Chuanfu, XIA Chuping, WANG Zhijian, ZHAN Jing, WU Jianhui (School of Metallurgy and Environment, Central South University, Changsha 410083, China) Abstract: The new method of interactive roasting with bismuth sulfide ore and pyrolusite was put forward, which consists of two simultaneous processes: sulphating roasting of manganese oxide......
when leached at ambient temperature for 2 h with 30 g/L citric acid and 10 g/L ammonium bifluoride. Pyrolusite is reduced by citric acid during leaching, cobalt intergrown with which is liberated... contained goethite (FeOOH) and gibbsite (Al2O3·3H2O); minority pyrolusite and poor-crystallized kaolinite were also found by optical microscopy. Surface scanning images obtaimed by SEM showed......
and firing at 1335 °C for 15 min by controlling the cracks formation. The fired manganese pellets keep the strength by the solid interconnection of recrystallized pyrolusite grains and the binding......
Trans. Nonferrous Met. Soc. China 23(2013) 548-555 Response surface optimization of process parameters for reduction roasting of low-grade pyrolusite by bagasse Ke-di YANG1, Xian-jia YE1, Jing SU1... University, Nanning 530004, China Received 8 October 2011; accepted 9 April 2012 Abstract: The reduction roasting processes for low-grade pyrolusite using bagasse as the reducing agent was statistically......
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:1672-7207(2015)02-0379-07 Gas-solid fluidized two-stage roasting of pyrolusite for preparation of potassium manganate LI Bin1, FENG Yali1, LI Haoran2 (1. School of Civil and Environmental... 100190, China) Abstract: To solve the problem of higher alkaline-manganese mole ratio and reaction temperature in the preparation of the potassium permanganate, using low grade pyrolusite as raw......