The method using ammonium bicarbonate to produce boric acid with magnesium and boron mineral in Tibet was introduced in this short paper,for which some experiments were performed to determine the ratio of fodder confect,the reaction temperature and reaction time.

Experimental study of vacuum-thermal reduction of ascharite mineral;

In order to utilize effectively the ascharite mineral which contain low grade B2O3,the vacuum-thermal reduction of roasted ascharite to deoxygenize magnesia into magnesium with silicon-aluminum alloy as reductant was experimentally investigated.

Experiment study on preparation of high-activity magnesia by calcination of ascharite minerals;

In order to effectively utilize the ascharite minerals which contain low grade B2O3,the paper studies the vacuum-thermal reduction of ascharite and deoxygenize magnesia into magnesium with calcium carbide as reductant.

Study on the reaction mechanism of preparation of borax from szaibelyite;

Borax from szaibelyite by carbon dioxide-soda process;