Device for the improvement of crude pellets and pelletizing process

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United States of America Patent

PATENT NO 9580769
APP PUB NO 20150128766A1
SERIAL NO

14520062

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Abstract

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A pelletizing process, having two distinct serial stages. In the first stage, crude (or green) pellets of a given ore, or a mixture of ores (such as iron ore, manganese ore and other minerals), are produced, while in the second stage, a Device for Improvement of Crude Pellets, is used. The Device includes a slightly elastic and smooth surface, with reduced attrition rate, that may be striated, and that, encircled in itself, forms a cylindrical geometric hollow figure supported by a metallic structure, also cylindrical, with the set forming a finishing drum. The Device rotates with an inner and continuous charge of ore pellets, and can rearrange the structure of such pellets, improving their physical quality: compressive strength, sphericity and surface finishing, and assimilate fines generated during previous processes. This device allows application of diverse materials to the pellets to add required extra properties per specificities of subsequent industrial processes.

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Patent Owner(s)

Patent OwnerAddress
VALE S ARIO DE JANEIRO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
De, Jesus Reinaldo Walmir Vitória, BR 3 1
Júnior, Aldo Gamberini Vitória, BR 2 1
Reis, José Antonino Alves e Silva Vitória, BR 2 1
Stegmiller, Leonidio Vitória, BR 6 4

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