Invention Grant
- Patent Title: Recovering mature fine tailings from oil sands tailings ponds
- Patent Title (中): 从油砂尾矿池中回收成熟的精细尾矿
-
Application No.: US14727689Application Date: 2015-06-01
-
Publication No.: US09127427B1Publication Date: 2015-09-08
- Inventor: Rade Svorcan
- Applicant: Technika Engineering Ltd.
- Applicant Address: CA Alberta
- Assignee: Technika Engineering Ltd.
- Current Assignee: Technika Engineering Ltd.
- Current Assignee Address: CA Alberta
- Agency: Seed IP Law Group PLLC
- Main IPC: B01D21/24
- IPC: B01D21/24 ; C10G1/04 ; E02F3/88 ; E02F7/00 ; E02B15/08 ; B01D21/00 ; B03B9/02 ; E02F7/06 ; C02F103/10

Abstract:
The present disclosure relates to systems and methods for recovering mature fine tailings (MFT) from oil sands tailings ponds. Some examples include a hollow, fully enclosed around its perimeter, ideally of cylindrical form, open bottom structure (a hollow conduit), of predetermined geometry, which is placed at the pond surface. The hollow conduit can penetrate MFT deposits to or below a level at which MFT of required density is located. A width or diameter of the hollow conduit can be determined with respect to the MFT inflow velocity and the corresponding shear rate, so as to enable MFT flow into the hollow conduit at a rate matching a rate at which the MFT is removed from the pond (e.g., a recovery rate). An MFT fill level inside the hollow conduit can be kept constant and equal to a required fill level throughout MFT recovery operations. MFT can enter the hollow conduit during MFT recovery operations solely under action of hydraulic head pressure. MFT can be transferred from within the hollow conduit utilizing a mechanical device such as a pump or a siphon, for transfer to shore based facilities and further processing.
Information query