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对选煤厂精煤除木杂系统流程进行了分析，对不同除杂工艺环节的分选原理、效果进行了比较，给出了各种除杂工艺的应用条件。
The process of removing miscellaneous wood from the coal in coal preparation plant was analyzed. The principle and effect of separation of different impurity removal process were compared, and the application conditions of various impurity removal technology were given.