serpentine; two-stage counter current leaching; remove impurity; MgSO4·5Mg(OH)2·3H2O; high purity Mg(OH)21. Introduction Serpentine is known as an important nonmetallic mineral resource in China with a monoclinic structure and chemical composition of [(Mg,Fe)3Si2O5(OH)4] [1,2,3]. ...
注:溶液中某种离子的浓度小于 1.0×10 - 5 mol · L - 1 ,可认为该离子不存在; 实验过程中,假设溶液体积不变。 Ksp(CaCO3) = 4.96×10 - 9 Ksp(MgCO3) = 6.82×10 - 6 Ksp[Ca(OH)2] = 4.68×10 - 6 Ksp[Mg(OH)2] = 5.61×10 - 12 下列说法正确的是 ( ) A .沉淀物 X 为...