To solve the problems occurred during manual coal sample preparation

such as low work efficiency

high labor intensity

poor working environment

harmful to human beings and poor representativeness of the sample due to large error

the auto coal sample preparation system was designed.Performance tests like residue sample mass

fuel size

residue sample precision and sample preparation bias verified this system has met the requirements of GB/T 19494.3-2004 and GB 474-2008 on precision and bias.Its application not only improves the automation degree of sample preparation

but also reduces human disturbance factors in the sample preparation process.