magnesian

2, make steel-making to decoke use magnesian noodles or vermicelli made from bean or sweet potato starch (grain) occupation standard;

2、制定炼钢脱硫用镁粉(粒)行业标准;

2、制定炼钢脱硫用镁粉(粒)行业标准;

2, make steel-making to decoke use magnesian noodles or vermicelli made from bean or sweet potato starch (grain) occupation standard;

Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions.

含硼系、镁质容矿石是硼矿形成物质基础，区域变质及混合化作用、构造活动是硼矿形成必要条件。