boroncontaining pig iron got from ludwigite ore in the eastern area of liaoning province by blast furnace separation was proposed as raw material to directly smelt boron steel.
提出以我国辽东地区硼铁矿经高炉分离后的含硼生铁为原料直接冶炼硼钢。
main characteristics and part of earlier stage achievements in technological process of comprehensive utilization of ludwigite ore are reported.