Kennecott Copper Corporation

Resource Engineering, Inc.

Eugene J Moreau

Norman Schapiro

Robert E Lueders

Richard S Opalanko

A process for reducing ash content of coal with an initial concentration of inherent ash of approximately 0.25 w/o to approximately 3 w/o. The coal is swollen and wetted with an alcohol solution such as methanol, then deashed with a mineral acid solution such as hydrochloric and hydrofluoric acid. The demineralized coal is neutralized, washed, and dried for use in making coal slurries with a very low ash content.

Deashing process for coal

Sodium ions are added to manganese nodules to convert the montmorillonite clay naturally occurring in the nodule material into a bonding agent for pelletization into spherical agglomerates. The addition of coking coal to provide bonding stength after reduction, during which the clay bond is destroyed, is also disclosed.

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Lincoln, RI, United States of America

Eugene J Moreau