Invention Grant
- Patent Title: Apparatus and method for screening and delivering green ore pellets onto a travelling grate
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Application No.: US16478749Application Date: 2018-01-17
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Publication No.: US11697860B2Publication Date: 2023-07-11
- Inventor: Steve Beaudin , François Cloutier-Poirier , Éric Dorval
- Applicant: MÉTAL 7 INC.
- Applicant Address: CA Sept-Îles
- Assignee: MÉTAL 7 INC.
- Current Assignee: MÉTAL 7 INC.
- Current Assignee Address: CA Sept-íles
- Agency: Meunier Carlin & Curfman LLC
- International Application: PCT/CA2018/050049 2018.01.17
- International Announcement: WO2018/132906A 2018.07.26
- Date entered country: 2019-07-17
- Main IPC: C22B1/20
- IPC: C22B1/20 ; F27B9/38 ; F27B21/02

Abstract:
A screening apparatus comprises superposed screening decks with an upper one of the screening decks having a pellet input, and each screening deck ends with an oversize pellet output, the screening decks have screens to screen the green ore pellets from top to bottom, the oversize pellet outputs feeding the travelling grate through pellet chutes with the oversize green ore pellets of one of the upper and the lower one of the screening decks being superposed to oversize green ore pellets of the other one of the lower and the upper one of the screening decks, the pellet chutes defining a curved delivery path with an input slope at the chute pellet input greater than an output slope of the chute pellet output to reduce a delivery speed of the green ore pellets from the oversize pellet output to the travelling grate. There is also provided a method for screening and delivering green ore pellets onto a travelling grate of an induration furnace.
Information query