Quote from: stavebuyer on September 08, 2022, 02:56:55 PMOur main charcoal plants have been under pressure from the EPA to reduce ash which comes from bark. They used to take "dirty" chips and sawdust mixed which was a blessing for a small mill.The main problem is the mixing of dirty wood chips and sawdust. If we process them separately, we can obtain pellets of the highest quality. Chips with bark must first be crushed to the size of a broken match. When the raw material comes out of the dryer, it must be sifted to separate the sand. The ash content in raw materials is reduced from 3-4% to 0.5-0.7%. The ash content in fine screenings is 15-25%. The purified raw materials are re-crushed and processed into pellets. Here is a video where the difference in the separated contamination is noticeable even in color.
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