Method and device for preparing manganese-silicon alloy by utilizing manganese-rich slag

The invention discloses a method for preparing a manganese-silicon alloy by utilizing a manganese-rich slag. The method comprises the following steps that firstly, a reductive agent with the particlediameter ranging from 30 cm to 40 cm is laid at the bottom of a submerged arc furnace; secondly, manganese ore with the particle diameter ranging from 30 cm to 40 cm is poured into the submerged arc furnace, and a liquid-state mixture is formed through high-temperature smelting of 1400 DEG C; thirdly, silica powder is added into the liquid-state mixture, the high-temperature smelting of 1400 DEG Cis continued, and the manganese-silicon alloy is formed. The invention further provides a device for preparing the manganese-silicon alloy by utilizing the manganese-rich slag. By means of the methodand the device for preparing the manganese-silicon alloy by utilizing the manganese-rich slag, the manganese-silicon alloy can be synthesized at a low cost. 本发明公开了种利用富锰渣制备锰硅合金的方法，包括下述步骤：S1、将粒径为30至40厘米的还原剂铺设在矿热炉的底部；S2、将粒径是30至40