1493215 Animal feedstuffs S KATZEN 24 June 1976 [1 July 1975] 26342/76 Heading A2B To make an animal feedstuff, cellulose-or lignin-containing material is reduced to a size of 2 inches or less e.g. by chopping or grinding, and is divided into two parts: (a) 40-60% of the material is treated with HCl, H 2 SO 4 or phosphoric acid and (b) the remainder is treated with Ca(OH) 2 , NaOH, KOH or NH 4 OH; 80-120 parts of (a) is mixed with 100 parts of (b) the moisture content adjusted to 20-60% and the resulting reaction converts the water to steam; and finally the mixture is formed into pellets, cubes or blocks. The starting material may be straw from wheat, barley, oats or rice; stover from corn or milo; cotton gin waste; grape pomace; sugar cane; bagasse; peanut, cocoa, rice or soybean hulls; peat; tobacco stems; sawdust or wood shavings; or cattle or poultry manure. Mixing may be in continuous mixers at 20-150??F. Belt, screw or pneumatic conveyors may be used.
