Zinc borate 2335 preparation method and zinc borate 2335 particle diameter control method

The invention discloses a zinc borate 2335 preparation method, and a zinc borate 2335 particle diameter control method. Zinc borate 2335 is prepared from the following raw materials: zinc sulfate, sodium borate, zinc oxide, water, boric acid and sodium sulfate. Concentrations of the boric acid and the sodium sulfate in a system are adjusted, and product particle diameter control is carried out during a cooling stage of the reaction system through slow addition of water at a temperature of 70-95 DEG C and stirring speed adjustments, so that the diameters of zinc borate particles can be selectively controlled between 0.5 mum and 10 mum. Therefore, Uniform particle diameter distributions and standard shapes of products are achieved, and various application demands of the market can be fully satisfied. 本发明公开了种2335型硼酸锌的制备方法及粒径调控方法，包括以硫酸锌、硼砂、氧化锌、水、硼酸、硫酸钠为原料制备2335型硼酸锌，通过调节硼酸、硫酸钠在体系中的浓度，在反应体系降温阶段采用缓慢补入70-95℃水、调节搅拌转速的方式进行产品粒径调控，可实现硼酸锌粒径0.5μm至10μm的选择性控制，产品粒径分布均、形貌规则，可充分满足市场各类应用需求。