Mechanochemical effect of brucite powder in a wet ultrafine grinding process

Abstract

<span style="font-size:9.0pt;mso-bidi-font-size:10.0pt" lang="EN-US">In this paper, mechanochemical effect of brucite powder in a wet ultrafine grinding process is studied. The results show that fresh surfaces of brucite particles are formed during the grinding process. The solubility of Mg(OH)₂ increases in the first 3 h of grinding. The crystal size and lattice deformation of brucite particles decrease in the first 3 h and are leveled off after 3 h. As the concentrations of Mg²⁺ and OH^- ions increase to a certain level, recrystallization would occur. The dominant face for comminution and recrystallizaiton of Mg(OH)₂ occur mainly on the (001) and the newly formed crystals are easily maintained due to less comminution on (110) face.

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