共搜索到39079条信息,每页显示10条信息,共3908页。用时:0小时0分0秒269毫秒
STUDY ON GREY FORECASTING MODEL OF COPPER EXTRACTION RATE WITH BIOLEACHING OF PRIMARY SULFIDE ORE H.C. Jiang1,B.H. Yang1,A.X. Wu2,Y. Xi3,X.S. Chen1 (1.School of Resources & Safety, Central South..., China) Abstract:A model GM (grey model) (1,1) for forecasting the rate of copper extraction during the bioleaching of primary sulphide ore was established on the basis of the mathematical theory......
摘 要:Leaching of rare earths Y,La and Ce by sulphuric acid from fine-grained zirconosilicate ore was investigated using Taguchi method of experimental...,leaching temperature,grind size and dilution.Statistical analysis showed that sulphation baking was a significant step for the leaching of rare earths from the whole-of-ore and optimized leaching......
Beneficiation of the gold bearing ore by gravity and flotationAlim Gül,Olga Kangal,Ayhan A. Sirkeci,Güven nalMineral Processing Engineering Department Istanbul, Faculty of Mines, Technical.... The choice among these processes depends on the mineralogical characterization and gold content of the ore. Recently, the recovery of gold using gravity methods has gained attention because of low cost......
">In this study,how to improve the stability of reduced manganese oxide ore was discussed by investigating reoxidation conditions and kinetics mechanism in the cooling process of manganese dioxide ore... of manganese in ore and the reoxidation kinetics of reduced products were studied.The results show that decrease of reduction temperature and time,and increase of raw materials thickness and little H2SO4......
摘 要:Leaching of rare earths Y,La and Ce by sulphuric acid from fine-grained zirconosilicate ore was investigated using Taguchi method of experimental...,leaching temperature,grind size and dilution.Statistical analysis showed that sulphation baking was a significant step for the leaching of rare earths from the whole-of-ore and optimized leaching......
Leaching process of rare earths from weathered crust elution-deposited rare earth ore TIAN Jun(田 君)1, 2, CHI Ru-an(池汝安)3, YIN Jing-qun(尹敬群)2 1. School of Resources Processing and Bioengineering...) from the weathered crust elution-deposited rare earth ore were investigated frow the viewpoints of kinetics, hydrodynamic and mass transfer. The results show that the leaching hydrodynamics follows......
......
Effect of Limestone Powder and Fly Ash on Magnesium Sulfate Resistance of Mortar刘数华State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University摘 要:The effect of limestone powder and fly ash on magnesium sulfate resistance of mortar was studied by testing on the strength, expansion and hydration products of the specimens......
......
Contrasting REE Signatures on Manganese Ores of Iron Ore Group in North Orissa, India B. K. Mohapatra1,P. P. Singh2,P. P. Mishra1 (1.Institute of Minerals and Materials Technology,Bhubaneswar... viz.stratiform, stratabound-replacement, and detrital of Precambrian Iron Ore Group from north Orissa, India was reported.These categories of Mn-ore differed in their major and trace chemistry and exhibited......