Role of Process Water Quality on Coal Flotation-a New Look
The floatability of coal is affected by the presence of dissolved inorganic ions in plant process water. Water quality is characterized in terms of conductivity, hardness, turbidity and composition of oil. These quality indices are correlated with coal flotation performance for three different water named, R&D laboratory tap water, process untreated water from West Bokaro wahsey-2 Tata Steel, India and process treated water after passing laboratory developed treatment process.The study clearly indicated that a significant quantity of clean coal is being lost due to poor process water quality used in the flotation process. The laboratory investigations showed that if these dissolved salts and suspended solids are reduced to even 50%, a clean coal yield improvement by minimum 5%～10% at the same ash level could be expected. Therefore, the conventional practice of water recycling though a thickener or a tailings pond needs a complete re-look. The water treatment process for recycled water has also been discussed for improving the process water quality as well as enhancement in flotation performance efficiency.
Flotation Process water Clean coal yield Total hardness
Ashiwani Kr Gupta PK Banerjee
Research & Development, Tata Steel, Jharkhand, India
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1108-1112
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）