Abstract
In the research of the reaction between desulfated bittern and milk of calcined dolomite to prepare magnesium hydroxide, some informations are needed about the milky state which is impossible to be defined plainly. Considering the mechanism of the reaction, it is concluded that the reaction must be carried out on the surface of the slaked calcined dolomite particles and the reaction velocity is, therefore, proportionate to the concentration of the magnesium ion on exponential 5/3 when the equivalent is 100%. The experimental result confirmed this supposition satisfactorily, and the milky state can be defined, accordingly, as the function of the reaction velocity.
