How is high medium low ferromanganese classified
Ferro Manganese is an alloy of iron. Its production of raw materials is generally containing manganese manganese ore, coke, lime melting in high temperature environment and enough reaction smelting and smelting because of increased coke ferromanganese, because this internal contains a certain amount of carbon elements, according to the content of carbon ferromanganese can still be divided into low carbon ferromanganese, medium carbon ferromanganese, high carbon ferromanganese.
Ferromanganese is divided into three categories according to its carbon content:
Low carbon: no more than 0.7% carbon
Medium carbon: carbon not greater than 0.7% to 2.0%
High carbon: no more than 2.0% to 8.0% carbon
Concept:
Electric furnace high carbon ferromanganese: electric furnace high carbon ferromanganese is a Mn-Fe-C three-element alloy containing a small amount of silicon, phosphorus and sulfur impurities. The sum of manganese and iron in ferromanganese is about 92%, and the carbon content is 6%-7%.
Blast furnace high carbon ferromanganese: blast furnace method is one of the earliest methods used in high carbon ferromanganese production. With coke as reducing agent and heat source and dolomite or lime as flux, high carbon ferromanganese was produced by blast furnace.
Medium and low carbon ferromanganese: medium and low carbon ferromanganese is mainly composed of two elements of manganese and iron alloy, melting point close to 1300℃, density 7.2-7.3g/cm3; According to the different carbon content, medium and low carbon ferromanganese can be divided into low carbon ferromanganese with carbon content less than 0.7% and medium carbon ferromanganese with carbon content 0.7%-2.0%.
