The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 1980
Filed:
Apr. 26, 1978
Pierre J Chassagne, San Mateo, CA (US);
Bechtel International Corporation, San Francisco, CA (US);
Abstract
A method for preparing industrial ores, e.g., coal, for pipelining and pipelining the ores to a site for subsequent processing or use. Ore from a mine is screened into two fractions, one having a large size particle distribution and one having a small size particle distribution, each fraction retaining both the ore and the refuse. The large size particle fraction is cleaned of refuse and the clean ore therefrom crushed to a size distribution of the smaller size or small size ore fraction. The separated refuse from the large size particle fraction is ground to provide superfines to the extent required for the proper particle size distribution for pipelining. The ore and superfine refuse are combined in a water slurry for pipelining. After pipelining the ore, the ore is cleaned and dewatered conveniently as known in the art for fine ore. The resulting ore may then be stockpiled or directly used.