关键词: 尾矿干堆, 分级脱水, 压滤

Abstract: In order to solve the problem that tailings cannot be continuously piled up due to insuffi⁃ cient storage capacity of an iron ore tailings pond in Hubei Province，an economic and reasonable process is used to treat the tailings of the concentrator. In view of the commonly used classification dehydration pro⁃ cess and the whole tailings pressure filtration process in the domestic tailings dry pile，a comprehensive analysis and comparison are carried out from the perspective of investment and operation cost. The compara⁃ tive analysis results show that the classification dewatering process has less investment and lower operation cost. The analysis results are consistent with the commonly used tailings treatment process in the industry， and can provide useful reference for similar tailings dry heap mines at home and abroad.

Key words: tailings dry deposit, fractional dehydration, filter