Heating system for material processing screen
AssigneeEmerging Acquistions, LLC
InventorsDane Campbell, Steve Miller
Life of this patent
Estimating the term…
Abstract
A separation screen has multiple discs configured to receive a material stream at an in-feed end and move a first group of materials from the material stream up an inclined angle and over a top out-feed end of the separation screen while a second group of materials from the material steam either fall through openings between the discs while being carried up the separation screen or roll off the in-feed end of the separation screen. A heating system heats an outside surface of the discs so that the discs can separate the first group of materials from the material stream during cold environmental temperatures.
Claims14
A separation system comprising:
- a separation screen having multiple discs configured to receive a material stream comprising a first group of materials and a second group of materials, wherein the discs are configured to move the first group of materials over an out-feed end of the separation screen, and wherein the discs are further configured to cause the second group of materials to either fall through openings between the discs or roll off an in-feed end of the separation screen;
- a center chute located underneath the disc screen;
- a forced air heater configured to generate a heated air flow;
- one or more air ducts configured to direct the heated air flow into the center chute, wherein the one or more air ducts includes two heat ducts coupled on opposite sides of the center chute;
- a reclamation hood that extends diagonally above a majority of the length of the separation screen and is configured to draw in at least some of the heated air flow that passes through the openings;
- and
- a return air duct configured to direct the heated air flow from the reclamation hood back to the forced air heater.
A method for operating a disc screen, comprising:
- dropping a material stream onto the disc screen, wherein the disc screen includes rotating discs;
- directing, by a heating system, a heated air flow from a center chute located underneath the disc screen toward the discs while the material stream moves along the disc screen, wherein the heated air flow is provided to the center chute by two heat ducts coupled on opposite sides of the center chute, wherein a first portion of the material stream is transferred over an end of the disc screen, and wherein a second portion of the material stream falls through openings formed between the discs before reaching the end of the disc screen;
- reclaiming, by a hooded intake that extends diagonally above a majority of the length of the separation screen, at least some of the heated air flow that passes through the openings;
- and
- directing the reclaimed heated air flow from the hooded intake back to the heating system.
Dependencies are inferred from the claim text.