Product introduction

 

Alias: ferromanganese

 

English name: Ferromanganese

 

Properties: High carbon ferromanganese is an alloy composed of manganese and iron. Produced by the blast furnace method and electric furnace. Electric furnace high-carbon ferromanganese is mainly used for steelmaking as deoxidizer, desulfurizer and alloy additive. In addition, with the progress of low-carbon ferromanganese production process, high-carbon ferromanganese can also be used to produce medium-low carbon ferromanganese.

 

Introduction: High carbon ferromanganese is an alloy composed of manganese and iron. Ferromanganese is classified into three categories according to its carbon content: low carbon: carbon is not more than 0.7%; medium carbon: carbon is not more than 0.7% to 2.0%; high carbon: carbon is not more than 2.0% to 8.0%.

 

Production Process

 

There are three ways to smelt high carbon ferromanganese by electric furnace method:

 

1) No flux method. For manganese-rich ores with higher manganese oxide, ferromanganese can be smelted by flux-free method, lime is not added to the charge during smelting, equipment and operation are similar to ferrosilicon, and acid slag operation is used under conditions of insufficient reducing agent, furnace temperature It is about 1320~1400 °C lower than the flux method. In this way, it is necessary to obtain qualified high-carbon ferromanganese, and to obtain low-phosphorus, low-iron manganese-rich slag containing manganese more than 35% for smelting manganese alloy.

 

2) Solvent method. Solvent method is a commonly used method for smelting high carbon ferromanganese. In addition to manganese ore and coke, there is lime in the composition of the charge, and alkalinity is used in the smelting process. B=1.3~1.4. With sufficient reducing agent, the manganese content in the waste residue is reduced as much as possible, and the recovery rate of manganese is improved.

 

3) Less solvent method. This method is operated by the so-called "weak acid slag method" between the solvent method and the solventless method. The method is to add an appropriate amount of lime or limestone to the charge, and control the ratio of slag basicity m(CaO)/m(SiO2) or m(CaO+MgO)/m(SiO20) to 0.6~0.8, thereby It can not only improve the recovery rate of manganese, but also obtain slag containing 25%~30% manganese and proper amount of CaO. By slag into the charge of smelting silicon-manganese alloy, lime can be saved and lime deliquescence can be reduced. Increase the amount of charge in the charge to improve the gas permeability of the charge.

 

Our advantage

 

1. Large goods come directly from refineries or ports, without transit.

 

2. Year-round cooperative fleet, no special fare increase for transportation safety.

 

 

 

Product Index

 

element	High carbon ferromanganese	Medium carbon ferromanganese	Low carbon ferromanganese	Metal manganese	Mirror iron	Silicon manganese alloy
carbon	7%	1.0~1.5%	0.5%

 

 

Application field

 

Used in steel making as a deoxidizer or alloying element additive.

 

 

 

package

 

Bulk transport