Patent ID: 11926884
Assignee: UMICORE
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. Process for the production of Si—Mn alloy from materials containing Ni, Mn and Co, comprising the steps:
a) preparing a metallurgical charge comprising said materials, and Si, Al, Ca, and Mg as slag formers;
b) smelting the charge in first reducing conditions, thereby obtaining a Ni-Co alloy and a first slag, wherein the Ni-Co alloy comprises a major part of at least one of Co and Ni and has a Si content <0.1 wt %, and wherein the first slag comprises a major part of the Mn;
c) separation of the first slag from the Ni-Co alloy; and
d) smelting the first slag in second reducing conditions, more reducing than said first reducing conditions, thereby obtaining a Si-Mn alloy and a second slag, wherein the Si-Mn alloy comprises a major part of the Mn and has a Si content >10 wt %.