发明名称 |
Beneficiation process to produce low ash clean coal from high ash coals |
摘要 |
A beneficiation process to produce low ash clean coal from high ash coals, including: preparing a coal slurry from fine coal and water and discharging it to a first reactor; preparing an alkali solution and discharging it to a first reactor; carrying-out a leaching reaction inside the first reactor; transferring the reaction mixture to a second reactor for filtration and washing to produce a filter cake; preparing a diluted acid solution and delivering it to a second reactor; preparing a diluted alkali solution and delivering it to a second reactor; feeding a coal slurry prepared from the filter cake into the second reactor for washing and transferring to a second filtration unit; transferring the product after filtration to a third reactor; carrying-out different leaching reaction sequences in the first, second, and third reactors; and transferring to a fifth tank the treated coal filter cake for drying. |
申请公布号 |
US8647400(B2) |
申请公布日期 |
2014.02.11 |
申请号 |
US20090682716 |
申请日期 |
2009.06.05 |
申请人 |
DASH PRATIK SWARUP;BANERJEE PRADIP KUMAR;BHATTACHARGEE DEBASHISH;MUKHERJEE TRIDIBESH;GANGULY SAIBAL;TATA STEEL LIMITED |
发明人 |
DASH PRATIK SWARUP;BANERJEE PRADIP KUMAR;BHATTACHARGEE DEBASHISH;MUKHERJEE TRIDIBESH;GANGULY SAIBAL |
分类号 |
C10L5/00 |
主分类号 |
C10L5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|