期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Statistical Modeling Studies of Iron Recovery from Red Mud Using Thermal Plasma 被引量:2
1
作者 Swagat S. RATH Archana PANY +4 位作者 k. JAYASANkAR Ajit k. MITRA C. SATISH kUMAR Partha S. MUkHERJEE barada k. mishra 《Plasma Science and Technology》 SCIE EI CAS CSCD 2013年第5期459-464,共6页
Optimization studies of plasma smelting of red mud were carried out. Reduction of the dried red mud fines was done in an extended arc plasma reactor to recover the pig iron. Lime grit and low ash metallurgical (LAM)... Optimization studies of plasma smelting of red mud were carried out. Reduction of the dried red mud fines was done in an extended arc plasma reactor to recover the pig iron. Lime grit and low ash metallurgical (LAM) coke were used as the flux and reductant, respectively. 2level factorial design was used to study the influence of all parameters on the responses. Response surface modeling was done with the data obtained from statistically designed experiments. Metal recovery at optimum parameters was found to be 79.52%. 展开更多
关键词 PLASMA response surface modeling red mud design of experiments optimiza-tion
下载PDF
Bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill spillage
2
作者 Sandeep PANDA Nilotoala PRADHAN +6 位作者 Umaballav MOHAPATRA Sandeep k. PANDA Swagat S.RATH Danda S. RAO Bansi D. NAYAk Lala B. SUkLA barada k. mishra 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2013年第2期281-293,共13页
Bioleaching of a low grade chalcopyrite (ball mill spillage material) was tested for copper recovery in shake flasks. The original samples (as received) were thermally activated (600℃, 30 min) to notice the cha... Bioleaching of a low grade chalcopyrite (ball mill spillage material) was tested for copper recovery in shake flasks. The original samples (as received) were thermally activated (600℃, 30 min) to notice the change in physico-chemical and mineralogical characteristics of the host rock and subsequently its effect on copper recovery. A mixed culture of acidophilic chemolithotrophic bacterial consortium predominantly entailing Acidithiobacillus fer- rooxidans strain was used for bioleaching studies and optimization of process parameters of both original and thermally activated samples. Mineralogical characteriza- tion studies indicated the presence of chalcopyrite, pyrite in the silicate matrix of the granitic rock. Field emission scanning electron microscopy coupled with Energy dispersive spectroscopy (FESEM-EDS) and X-ray Fluor- escence (XRF) analysis indicated mostly SiO2. With pH 2, pulp density 10% w/v, inoculum 10% v/v, temperature 30~C, 150 r.min-~, 49% copper could be recovered in 30 days from the finest particle size (- 1 ~ 0.75 mm) of the original spillage sample. Under similar conditions 95% copper could be recovered from the thermally activated sample with the same size fraction in 10 days. The study revealed that thermal activation leads to volume expansion in the rock with the development of cracks, micro and macro pores on its surface, thereby enabling bacterial solution to penetrate more easily into the body, facilitating enhanced copper dissolution. 展开更多
关键词 ball mill spillage thermal activation BIOLEACHING COPPER
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部