Manganese metal using tilting refining furnace melting. After the oven before lime mat in the lower part. High above, a small amount of lime silico-manganese silicon alloy. If added after the ignition manganese-rich slag and lime mixture. After all the entire melting manganese-silicon alloy, the silicon content of the adjusted qualified baked added. Melting The melting process is gradually added manganese-silicon alloy and reduce slag alkalinity.

Manganese metal, the Mn> 93.5%, Si <1.8%, Fe <2.8%, p <0.06%, C <0.20%. Lt produce manganese metal (Mn95% ~ 98%) consumed manganese-rich slag (Mn4.8%) 1.9 ~ 2.0t, High-silico-manganese silicon alloy of about 0.62t, lime (CaO> 90%) to about 2.0t fluorite over 0.2t. Energy 3000 ~ 3400kW · h. Manganese recoveries of 72% to 75%.

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