Mix the circulating mother liquor w

Mix the circulating mother liquor with the Bayer red mud slurry, then add sodium ferrite and lime to make a qualified slurry, the mixing ratio is 4 according to the mass ratio of liquid to solid in the slurry; the amount of sodium ferrite is added to the qualified slurry Fe2O3<br>The molar ratio with Al2O3 is 0.5, and the addition amount of lime is 2.0 according to the mass ratio of CaO and Al2O3 in the qualified slurry; the slurry is subjected to a second dissolution reaction at 230 ° C for 1.0h, and the dissolved material is separated by solid-liquid separation Phase and dissolution separation; the kilogram experiment results show that: the dissolution rate of alumina in red mud reaches 60%, the dissolution rate of sodium oxide<br><br>90%, the alkali content in the secondary slag phase is 0.24%

将循环母液与拜耳红泥浆混合，然后加入铁氧精钠和石灰，使浆料合格，混合比为4，根据浆料中液体与固体的质量比;铁氧钠的含量被添加到合格的泥浆Fe2O3<br>与Al2O3的摩尔比为0.5，根据合格浆料中CaO和Al2O3的质量比，酸橙的添加量为2.0;浆料在230°C下进行第二次溶解反应，为1.0h，溶解材料通过固体-液体分离相和溶解分离分离;千克实验结果表明：红泥氧化铝溶解率达到60%，氧化钠溶解率<br><br>90%，二次渣相中的碱含量为0.24%

将循环母液与拜耳赤泥浆混合后，加入铁酸钠和石灰，制成合格浆，按浆中液固质量比为4，合格浆中加入铁酸钠<br>与Al2O3的摩尔比为0.5，根据合格浆液中CaO和Al2O3的质量比，石灰的加入量为2.0；浆液在230℃进行二次溶解反应1.0h，溶解物经固液分离相和溶解分离相分离；千克实验结果表明：氧化铝在赤泥中的溶出率达到60%，氧化钠的溶出率达到60%<br>90%，二次渣相碱含量为0.24%<br>