FIELD: inorganic compounds technologies.
SUBSTANCE: process comprises batching limestone into container, pouring above it iron-free low-phosphorus slag, heating the mixture, adding silicomanganese to slag-limestone melt, reducing slag with silicon of silicomanganese in presence of limestone, adjusting melt, and discharging melting products. According to invention, limestone is charged in amount comprising 33-43% of the amount of slag to achieve basicity modulus of melt 1.5-1.8 and silicomanganese is added in molten state in amount 70-90% based on the weight of slag-limestone melt.
EFFECT: simplified technology of producing low-carbon ferromanganese from iron-free low-phosphorus manganese slag and silicomanganese obtained from processing of low-grade carbonate iron-manganese ores, and reduced power consumption.
3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| BURDEN FOR PRODUCTION OF IRON-FREE LOW-PHOSPHOROUS MANGANESE SLAG | 2005 |
|
RU2283352C1 |
| METHOD OF PRODUCTION OF DEFERRIZED LOW-PHOSPHORUS MANGANESE SLAG | 2005 |
|
RU2295577C2 |
| METHOD OF COMBINED PROCESSING OF OXIDED AND CARBONATE FERROMANGANESE ORES | 2008 |
|
RU2374350C1 |
| PROCEDURE FOR PRODUCTION OF MEDIUM CARBON FERRO-MANGANESE | 2010 |
|
RU2428499C1 |
| METHOD OF PROCESSING FERROMANGANESIAN RAW MATERIALS | 2001 |
|
RU2191831C1 |
| METHOD FOR PRODUCTION OF METAL MANGANESE AND/OR LOW-CARBON FERROMANGANESE | 1996 |
|
RU2104322C1 |
| PROCESS FOR PREPARING FERROMANGANESE FOR WELDING PRODUCTION | 1992 |
|
RU2005803C1 |
| METHOD TO MELT LOW-CARBON MANGANIFEROUS ALLOYS | 2010 |
|
RU2455379C1 |
| METHOD OF PREPARING FERROMANGANESE | 1999 |
|
RU2148102C1 |
| METHOD OF SMELTING LOW-PHOSPHORUS MANGANESE SLAG TO OBTAIN COMMERCIAL LOW-PHOSPHORUS CARBONIC FERROMANGANESE | 2018 |
|
RU2711994C1 |
