聚合硅酸对含铁硅酸盐矿物浮选抑制作用的机理

Mechanism of the Depression Effect of Polymerized Silicate on Iron-containing Silicate Minerals

水玻璃经H2 SO4 、Al2 (SO4 ) 3、Fe(NO3) 3活化以后 ,在赤铁矿的浮选中对含铁硅酸盐脉石矿物具有良好的选择性抑制作用。红外光谱、光电子能谱的研究结果表明 ,制得的聚合硅酸胶体溶液中荷正电的组分由于静电作用而选择性地吸附在荷负电的硅酸盐矿物表面 。

Sodium silicate, when activated by H 2SO 4?Al 2(SO 4) 3 or Fe(NO 3) 3,will have good selective depression effect on iron containing silicate gangue minerals. The IR and XPS study results show the positively charged component of the resultant polymerized silicate colloidal solution may be selectively adsorbed on the negatively charged surface of silicate minerals due to the static electricity, leading to the depression of the flotation of aqirine.