Patent · US Expired

Coal preparation

US4415335A · kind A · utility

11Cited by

5References

2Claims

0Family size

Assignees

BP Australia Limited · AU
The Broken Hill Proprietary Company Limited · AU

Inventors

David Mainwaring · Melbourne, AU
Charles U. Jones · Melbourne, AU

Key dates

Filing date	Jan 7, 1982
Grant date	Nov 15, 1983
Priority date	—
Expiry date	Jan 7, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10L9/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Deashing of coal is achieved by oil agglomeration and subsequent separation of a carbon oil phase. The oil is removed by steam stripping after the coal oil agglomerates have been disintegrated. The fine coal product can be used in steam generating plants such as power stations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.