一种通过化学反应产生沉淀物来提取金属的方法，多用于冶金业。
浸出液中的铬可通过水解沉淀法以氢氧化铬的形态除去，铬的脱除率达94.44 %。
The chromium in the leach solution can be removed as chromium hydroxide by using a hydrolysis precipitation process and the efficiency of chromium removal reaches 94.44%.
采用水解-沉淀法，以四氯化钛为原料，通过添加少量的硫酸铝、硅酸钠来改变氧化钛的晶型；
The crystal type of nano-titania was conversed by hydrolysis-precipitation method with TiCl_4 added aluminum sulfate or sodium silicate;
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