| abstract |
The present application provides a waste circuit board sample preparation system and method, wherein the system includes: a crusher, a pulverizer, a plurality of mixing devices, a reduction device, an oven and a grinder; The circuit board is subjected to primary crushing to obtain first circuit board fragments; a pulverizer is used to perform secondary crushing of the first circuit board fragments to obtain second circuit board fragments; a mixing device is used to crush the second circuit board fragments Mixing; a shrinking device, used for sample shrinking of the second circuit board fragments, to obtain a plurality of first circuit board samples; an oven, used for drying the target circuit board samples in the first circuit board samples to obtain the first circuit board samples. A second circuit board sample; a grinder for grinding the second circuit board sample to obtain a target circuit board sample; the target circuit board sample is used for copper content detection. Through this embodiment, the copper content in the prepared sample can more accurately represent the copper content in the original waste circuit board. |