Ашигласан бутлуур wan Tto
wan Tbough Tgypsum бутлуур. The BPBC was prepared based on the method of Zhang et al brief g of red P was mixed evenly with g BC700 to achieve a mass percentage of 5 and then the mixture was placed into an agate jar with 200 g agate balls operated at 300 rpm in a planetary ball grinding mill machine YXQM 4 L China for 12 h.