Apparatus and method for dry beneficiation of coal

Details Apparatus and method for dry beneficiation of coal Apparatus and method for dry beneficiation of coal

2005-05-10

2005-05-10

Walsh, Donald P. (Department: 3653)

Classifying, separating, and assorting solids

Plural, diverse separating operations

Gaseous suspension and stratifying

C209S021000, C209S024000, C209S030000, C209S044000, C209S466000, C209S477000

Reexamination Certificate

active

06889842

ABSTRACT:
A method of beneficiating coal in a dry process includes separating raw coal from a coal mine into coal fines and larger pieces of coal using pressurized air, separating the larger pieces of coal according to size, removing ash from the larger pieces of coal on an air table, and further removing ash from the larger pieces of coal using a size-discriminating device to obtain a beneficiated coal product. The invention also includes an apparatus for the dry beneficiation of coal. The apparatus includes at least one air separating device, at least one air table, and at least one first and second shakers which separate the coal by size and remove ash from the coal. The air table effectively removes ash from infed coal without the need for a fluidizing media.

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