Nexus Ligas produces three types of manganese alloys:
Silico-manganese (SiMn)
High carbon ferromanganese (HC FeMn)
Medium carbon ferromanganese (MC FeMn)
*The only producer in Brazil, currently.
Specifications:
SiMn – %Mn min: 65%; %Si: 12 to 20; %C: 1.5 to 3.0; %P: 0.10 to 0.25
HC FeMn – %Mn min: 75%, %Si: max: 2%; %C: max: 7.5; %P: 0.18 to 0.25
MC FeMn – %Mn min: 75%; %Si: max: 2%; %C: max: 2; %P: max: 0.35
The silico-manganese and high carbon ferromanganese alloys are produced in electric reduction furnaces, which are metallurgical reactors that convert raw materials into alloys. Production consists of adding manganese ores, reducing agents(coke, petroleum coke, charcoal) and melters (quartz, limestone, dolomite) in electric furnaces in quantities calculated for production within the expected specifications.
The medium carbon ferromanganese alloy is produced by silicothermic. High-grade manganese ore, quicklime, and SiMn fines are added in an electric furnace to produce the medium carbon ferromanganese (MC FeMn).
After a certain time of operation, the liquid metal and the slag are poured through the running channel, where a separation by density occurs between both. The metal is directed to the ingot molds and the slag is directed to the slag box for later disposal.
It is the 12th most abundant element in the Earth’s crust. It is the 4th most used metal in the world and essential in the production of steel. About 90% of the consumption of this metal corresponds to its use in the steel industry, as a component in the manufacture of all steels.
Manganese ore is also destined for various non-metallurgical uses. It can be used in components of cells and batteries, in agriculture (fertilizers, fungicides and feed) and in chemical compounds in the production of oxidizing agents for dyes, flavorings and paint drying and sealing agents.