One conventional agricultural " granulator " machine is modified, and by fiber, the mechanically stable form roasting process for being suitable for a kind of raw material is converted into the low-density cellulosic biomass of overall flow without increasing by one " adhesive " or other such adjuvants. The unprocessed biomass or Ib/ cubic feet of the volume density from 20 to 32 that certain disclosed embodiments of product are related to a briquetting " cube " of unprocessed cellulosic biomass or " thin ice hockey " is shredded with 4 to 15 times of a density. Moisture content is located at 10% lower section, usual 3-8%. The intensity of product on reduction product a to shell from a height of 3 feet by that will not generate more than 10% breakage. Product of the invention, which can produce, wishes size with any, such as substantially square, rectangle or parallelogram like product.