Straw powder and chemical modification methods for preparing litters

The present invention relates to the field of agricultural products processing and the use of pets prepared BACKGROUND supplies. The method relates to a chemical modification followed for preparing litters for straw powder: first dry straw crushing, and sieved to a particle size between 75-200 microns in which the portion of the straw as a fine powder , wherein the particle size of the portion taken between 0.2-1mm thick as straw powder; wetted with aqueous sodium hydroxide fine straw powder, treated at temperature 75-95 ℃ 50-90 minutes to allow the slag material from the bulk state to adhesion state; epichlorohydrin and chloroacetic acid was added and reacted at 35-65 ℃ 1-3 hours, then mixed with coarse straw powder, extrusion, microwave drying and finally screened to obtain high water absorption of the litter; ingredients mass ratio: 100 parts of the fine straw powder as a reference, 50-90 parts of water, 4-8 parts of sodium hydroxide, 5-9 parts of chloroacetic acid, 0.3 to 1.0 parts of epichlorohydrin, crude straw powder 60-150 copies.