The double spiral grinding machine is suitable for rough pulping of wood chips, bamboo chips, branches, rice straw and other raw materials, which can be directly processed into velvet fibers, and can be directly made into pulp with high concentration pulping machine and refiner.

There is no need for chemicals in the production, and it has little pollution to the environment. It is a new type of pulping equipment that meets the requirements of environmental protection. Can also be used for semi-chemical mechanical pulp.