Method for obtaining a lump product

Details Method for obtaining a lump product Method for obtaining a lump product

1976-04-22

1977-09-20

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 7, 75114, C22B 108

Patent

active

040494357

ABSTRACT:
The proposed method relates to preparation of ores and is intended for production of pellets and briquettes with use being made of mineral hydraulic binders.
This method comprises mixing an ore with a mineral hydraulic binder, the mixture obtained is simultaneously homogenized and activated, then said mixture is pelletized and the green lumps are subjected to a heat humidity treatment at 70-100% relative humidity and a temperature of 60.degree.-250.degree. C followed by a two-stage heat treatment, the first stage of said treatment being effected at 70.degree.-100.degree. C until there is a 2-5% content of free moisture in the lumps, and the second stage of heat treatment being effected at a temperature of no less than 100.degree. C and no more than 900.degree. C until there is 0.01-1.0% content of free moisture in the lumps.

REFERENCES:
patent: 1858274 (1932-05-01), Kern et al.
patent: 2756136 (1956-07-01), Queneau

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