Manufacture method of quartz crucible for casting polycrystalline silicon ingot

The invention discloses a manufacture method of a quartz crucible for casting a polycrystalline silicon ingot. The method comprises the following steps of: preparing slurry and forming a blank; carrying out ball milling on partial quartz powder, partial additives containing a polymer monomer and a cross-linked body and all deionized water until required granularity is obtained; then, adding residential quartz powder and residential additives for secondary ball milling to obtain slurry and stirring a proper amount of qualified slurry; injecting an initiator and a catalyst at the same time of stirring, dynamically pressurizing and adding the stirred slurry into a die for heating and curing; and crosslinking and polymerizing an organic polymer monomer in the heating and curing process into three-dimensional grid-shaped polymer gel, and bonding and curing the quartz powder to form the blank. The manufacture method provided by the invention has a short production period, high efficiency and a low cost and meets th