METHOD OF REDUCTION OF IRON-MANGANESE CONCRETIONS OF BALTIC SEA

METHOD OF REDUCTION OF IRON-MANGANESE CONCRETIONS OF BALTIC SEA

FIELD: chemical concentration of manganese ores; reduction of iron-manganese concretions. ^ SUBSTANCE: proposed method includes heating of ores together with reductant for reducing manganese dioxide (MnO2) to bivalent state (MnO). Subjected to reducing roasting are iron-manganese concretions of Balt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MARKOV A.S
Format: Patent
Sprache:eng ; rus
Schlagworte:
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:FIELD: chemical concentration of manganese ores; reduction of iron-manganese concretions. ^ SUBSTANCE: proposed method includes heating of ores together with reductant for reducing manganese dioxide (MnO2) to bivalent state (MnO). Subjected to reducing roasting are iron-manganese concretions of Baltic Sea containing no more than 26% of MnO2 with the use of organic agents as reductants contained in the amount of 14% at heating to temperature of 400°C and limited admission of air to roasting zone. ^ EFFECT: simplified procedure of reducing roasting. ^ 1 dwg, 1 ex