In spite of abundant boron resources in China, much of ore resource condition and grade are severe. Nowadays the high-grade boron and magnesium ore which are generally processed and utilized in nature account for 6.64% of total reserves of boron ore in china. On the other hand, those low-grade boron and magnesium ore the reserves of which are more than half of the total reserves are abandoned and less used because of the limit of high-grade ore, resulting in much resource waste, huge land occupation and ser...