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论述了某选煤厂工艺流程中存在的问题及其技术改造措施，预测了改造后选煤效率将由原来的８０％提高到９０％以上。
The problems existing in the technological process of a coal preparation plant and the technical renovation measures are discussed. It is predicted that the efficiency of coal preparation will be increased from 80% to over 90% after the reform.