Quality efficiency of coal jigging separation
YUAN Jinzhao
Wu Dawei
Zhao Jiawei
Geng Hao
Abstract：The organic efficiency,an indicator for evaluating process performance of coal gravity separa-tion equipment specified in the national standard"GB/T 15715-2014 Performance Evaluation for Coal Gravity Separating Equipment",is not clearly and precisely defined.To address this issue,the indicator of quality efficiency is proposed.Based on the proposed indicator and the float-and-sink analysis data and related washability curves as given in the attachment of the above-mentioned standard,obtained through jigging separation test,both overall and each stage's quality efficiencies of the jigging machine are calcu-lated and briefly analyzed.Analysis result shows that the quality efficiency should be evaluated from the perspective of both floats and sinks;and for jigging separation of sinks,a higher quality efficiency can be obtained as compared with that of separation of floats,and the quality efficiency of the jig's first stage is higher than that of its second-stage.It well demonstrates the applicability of the proposed indicator in jig-ging separation of coal and for evaluation of performance of this process.
Keywords：jigging separation of coalquality efficiencyoverall quality efficiencyquality efficiency of each stagepercentage of correctly placed materialpercentage of misplaced material
Publication Date：2023-10-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 31-35 )