Methods of and apparatus for mining and processing tar sands and the like
US4234232A · kind A · utility
7Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1978 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Oct 4, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C41/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods of and apparatus for recovering bitumen from tar sands and the like in which the tar sand is mechanically dislodged from the formation in which it is deposited and in which a solvent for the bitumen is mixed with the mined material to reduce the viscosity of the bitumen and thereby facilitate the transfer of the mined material to an operation where the bitumen is separated from solid components of the tar sand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.