影响膨润土漂白处理工艺因素研究

Influencing Factors of Bentonite Bleaching Technology

通过控制介质条件、矿浆浓度、漂白剂用量、反应温度和反应时间等参数 ,用连二亚硫酸钠对膨润土中以氧化物、氢氧化物形式存在的 Fe3+进行除铁处理。试验产品白度为 77.5 ,比原矿 (2 6 .5 )提高近 2倍 ,Fe2 O3含量由 6 .5 1%下降为 2 .0 % ,浸出率达 70 %。

By the control of the ore pulp concentration,pH value, the content of bleaching agent (Na 2S 2O 4), reaction temperature and time, most of the Fe 3+ (oxide or hydroxide )in bentonite was removed The whiteness of bentonite was improved from 26 5 to 77 5 and content of Fe 2O 3 came down from 6 51% to 2 0%. The quality of bentonite was much improved.