Prepn process of hydrated magnesium borate Mg5 B12 O23.nH2O

The preparation process of hydrated magnesium borate Mg5B12O23.nH2O includes the following four steps: mixing the materials including boric acid, magnesia and crystal nucleus promoter in certain proportion to react; crystallizing, centrifugal filtering, and washing and drying to prepare Mg5B12O23.nH2O. The technological process has crystallizing temperature controlled in 35-55 deg.c, crystallizing time of 2-3 hr, and drying temperature controlled in120-150 deg.c. The preparation process is simple, has facile material and low cost, and is suitable for industrial production. The product has excellent mechanical performance and may be used widely in medicine, glass, ceramic and other industrial fields.