Frozen coal cracker

Details Frozen coal cracker Frozen coal cracker

1983-08-03

1985-08-06

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Rotary striking member with feed or discharge conveyor or...

241189R, 241DIG17, B02C 13286

Patent

active

045330883

ABSTRACT:
A machine for breaking frozen lumps of coal into smaller lumps includes a housing, a rotor which revolves within the housing and has teeth for engaging the coal, and a breaker plate which together with the rotor forms a converging space into which the rotor moves the coal to break up any frozen lumps. In addition, the machine has a baffle plate which at its lower end pivots on the housing and is inclined downwardly toward the rotor so as to direct large frozen lumps of coal into the teeth of the rotor, at least when the machine is configured to process frozen coal. With little effort, the machine may be converted to a by-pass configuration which permits unfrozen coal to pass through the housing without coming into contact with the rotor, and this of course reduces wear on the rotor. To effect this conversion, the breaker plate is swung backwardly to provide a wide space between it and the rotor, and a removable baffle plate is installed in the housing above the rotor such that it is inclined downwardly toward the space between the rotor and the breaker plate. Thereafter, the pivoted baffle plate is swung over against the upper end of the removable baffle plate, and when so disposed it likewise overlies the rotor, but is inclined downwardly toward a space on the opposite side of the rotor. Thus, the two baffle plates divert unfrozen coal to the sides of the rotor.

REFERENCES:
patent: 2643065 (1953-06-01), Clawson
patent: 2954176 (1960-09-01), Cole
patent: 4056107 (1977-11-01), Todd et al.
patent: 4205795 (1980-06-01), Graveman
American Pulverizer Company, Bulletin 75 FCC.

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