Row Material

Actually, the raw material for briquetting is inexhaustible. Each time of harvest, boundless of crops straw has been left in the field. So the raw material for biomass briquette is not a big issue. But one thing should be pay attention to is the collective of raw material. The process need time, energy and machinery help. Also, the crop straw has no value for the farmer harvest. Therefore, the aim of commercial production of biomass briquette is to make money. At this condition, the raw material is not free. It is difficult to fond examples of operating biomass briquette plants which do not have to pay something for the residues they use.

Such payments many arise because there are competing uses for the waste but it may also arise simply because a residue provider is unwilling to allow someone else to make profit form their wastes without asking for a share in the form of payment for the raw material. Generally speaking, there are two kinds of raw materials for biomass briquette. One is field resides and the other is the process waste. Most residues are fry at the moment of harvesting and therefore a high potential raw material for biomass briquette. The volume of residues produced per unit of cultivation is within a wide range, depending strongly on the crop, the intensity of agriculture and climate. In general, field residues are bulky, baled wheat straw has been put at around 100 kg/m3 and stacked cotton residues at 55 kg/m3. Even when chipped, cotton residues only have a bulk density of 130 kg/m3. By contrast, stacked wood has a bulk density above 500 kg/m3.