A method for producing leather release type base paper

The invention belongs to papermaking techniques and relates to a method for producing leather release type base paper. According to the method, base raw materials which are bleached sulfate softwood pulp and bleached sulfate hardwood pulp are subjected to steps of pulping, pulp preparing, sizing, papermaking with pulp, drying for the first time, surface sizing, after-drying, calendaring, and taking up in order to obtain finished-product paper; auxiliary raw materials are added in process steps; according to a material transferring sequence, materials in the pulping step pass through a pulper, a before-beating pulp pool, a pulp grinding machine and an after-beating pulp pool in order; materials in the pulp preparing step pass through a pulp preparing pool, a transit pulp pool, a paper machine pulp pool and a high-attitude tank in order; materials in the sizing step pass through a first pulp washing pump, a slag separator, a second pulp washing pump and a pressure sieve in order; materials in the papermaking st