Design and Application of a New Auxiliary System for Coal Sample Preparation
Coal is a heterogeneous mixture in terms of both chemical composition and particle size,making sample preparation a critical step in quality testing.This paper presents the design of an auxiliary system for coal sample preparation,developed by integrating feeding equipment,particle size screen mesh,and feeding and transportation systems after comparing several commonly used coal sample preparation devices.The system effectively meets the requirements of stepwise crushing in coal sample standards and improves the working environment.The uniform feeding feature significantly reduces human interference and lessens the labor intensity of the operators.Moreover,the system is compatible with traditional sample preparation equipment,eliminating the need for costly automatic sample preparation systems.This not only reduces the cost of sample preparation but also shortens the testing cycle,enhances work efficiency,and improves the accuracy of the results.The system meets the needs of routine operations and holds great potential for widespread application and promotion.
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