Recovery of valuable metals from a low-grade nickel ore using an ammonium sulfate roasting-leaching process

2012 ◽  
Vol 19 (5) ◽  
pp. 377-383 ◽  
Author(s):  
Xin-wei Liu ◽  
Ya-li Feng ◽  
Hao-ran Li ◽  
Zhi-chao Yang ◽  
Zhen-lei Cai
Keyword(s):  
Ammonium Sulfate ◽  
Low Grade ◽  
Leaching Process ◽  
Valuable Metals

A Sustainable and Selective Roasting and Water-Leaching Process to Simultaneously Extract Valuable Metals from Low-Grade Ni-Cu Matte

JOM ◽  
2018 ◽  
Vol 70 (10) ◽  
pp. 1977-1984 ◽  
Author(s):  
Fuhui Cui ◽  
Wenning Mu ◽  
Shuai Wang ◽  
Haixia Xin ◽  
Qian Xu ◽  
...  
Keyword(s):  
Low Grade ◽  
Water Leaching ◽  
Leaching Process ◽  
Valuable Metals ◽  
Selective Roasting

A breakthrough method for the recycling of spent lithium-ion batteries without pre-sorting

2021 ◽  
Author(s):  
Jialiang Zhang ◽  
Guoqiang Liang ◽  
Cheng Yang ◽  
Juntao Hu ◽  
Yongqiang Chen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Mineral Resources ◽  
Low Grade ◽  
Valuable Metals

Inspired by the process of "metallurgy first and then beneficiation" for disposing low-grade and complex mineral resources, we proposed a breakthrough method to recover valuable metals from spent entire lithium-ion...

Role of sodium citrate in leaching of low-grade and multiphase zinc oxide ore in ammonia–ammonium sulfate solution

2017 ◽  
Vol 169 ◽  
pp. 534-541 ◽  
Author(s):  
Kun Yang ◽  
Libo Zhang ◽  
Chao Lv ◽  
Jinhui Peng ◽  
Shiwei Li ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Ammonium Sulfate ◽  
Sodium Citrate ◽  
Sulfate Solution ◽  
Low Grade ◽  
Ammonium Sulfate Solution

Leaching and Kinetic Modeling of Malaysian Low Grade Manganese Ore in Sulfuric Acids

2016 ◽  
Vol 1133 ◽  
pp. 629-633 ◽  
Author(s):  
Suhaina Ismail ◽  
Hashim Hussin ◽  
Syed Fuad Saiyid Hashim ◽  
Norazharuddin Shah Abdullah
Keyword(s):  
Dissolution Kinetics ◽  
Product Layer ◽  
Low Grade ◽  
Manganese Ore ◽  
Leaching Process ◽  
Mixed Control ◽  
New Variant ◽  
Experimental Parameters ◽  
Kinetics Of ◽  
And Diffusion

The leaching process of Malaysian low grade manganese ore (LGMO) using bamboo sawdust (BSD) as reducing agent in acidic medium (H2SO4) and the dissolution kinetics of this ore was investigated. Acid concentration, reaction temperature, and BSD loading were chosen as experimental parameters through application of response surface methodology (RSM). For analysis of the kinetic data in this study, the SCM with surface chemical reaction and diffusion through product layer, the mixed control modelled and also new variant SCM were evaluated. The reaction kinetics of this leaching process was determined, and it is observed that it fits the model of 1-23X-(1-X)23=kt with activation energy of 69.3kJ/mol. The reaction rate for LGMO leaching using BSD was found to be diffusion through product layer.

Leaching process and kinetics of manganese in low-grade manganese ore

2013 ◽  
Vol 32 (2) ◽  
pp. 222-226 ◽  
Author(s):  
Chao Xie ◽  
Longjun Xu ◽  
Tiefeng Peng ◽  
Kun Chen ◽  
Jing Zhao
Keyword(s):  
Low Grade ◽  
Manganese Ore ◽  
Leaching Process ◽  
Kinetics Of

Low Grade Copper Sulfide Ore Bioleaching in a New Bioreactor

2013 ◽  
Vol 825 ◽  
pp. 410-413
Author(s):  
Rosa Elva Rivera-Santillán ◽  
Felipe Patricio-Ramírez ◽  
Irvin Olvera-Pérez
Keyword(s):  
Homogeneous Solution ◽  
Commercial Application ◽  
Low Grade ◽  
Slow Kinetics ◽  
Valuable Metals ◽  
Sulfide Ore ◽  
High Power Consumption ◽  
Effective Use ◽  
Copper Sulfide Ore ◽  
Constant Improvement

Although the biological techniques application into sulfide minerals leaching to obtain valuable metals ​​is an important technological advance, the disadvantage of relatively slow kinetics bio-oxidation still limits its commercial application. However, it stimulates the research for constant improvement. Microorganisms are capable of performing their intended role with great efficiency under optimal conditions. Bioreactor design seeks to maintain certain environmental conditions that favour efficient microbial growth as pH, temperature, oxygen and carbon dioxide dissolution, stirring speed, etc. In an aerobic process such as bioleaching the optimum oxygen transference is extremely difficult to be achieved, because little oxygen dissolves in water. Furthermore the oxygen transference usually is facilitated by agitation, which is also required to mix the nutrients and maintain homogeneous solution, this transference is limited by the agitation speed because of the high power consumption, and the damage that undergoes the microorganisms submitted to excessive shear. In order to improve bio oxidation kinetics, in this paper we designed a new bioreactor, which combines elements of the stirred tank and airlift reactor, and introduces new elements, to their effective use in biohydrometallurgy. A new bio-reactor called RELBA was designed and build-up in the UNAM laboratories. It controls dissolved O2among other parameters and it prevents shear. Bioleaching tests of the ore, containing 0.135% Cu and 3.07% Fe, were performed in the orbital incubator and in theRELBAbio-reactor to 35°C using a mixed strain ofAcidithiobacilluscaldus,Acidihiobacillus thiooxidansandLeptospirillum ferriphilum, which confirm the advantages of the new bioleaching reactor.

A new method for recovering valuable metals from low-grade nickeliferous oxide ores

2005 ◽  
Vol 80 (4) ◽  
pp. 280-285 ◽  
Author(s):  
Yanbin Xu ◽  
Yanting Xie ◽  
Lan Yan ◽  
Rudong Yang
Keyword(s):  
New Method ◽  
Low Grade ◽  
Valuable Metals
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