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:
Jul. 26, 1983
Filed:
Jan. 15, 1981
Andrejs Berzins, Parma, OH (US);
Davy Inc., Cleveland, OH (US);
Abstract
Apparatus and method are disclosed for charging particulate material of varying sizes into a shaft furnace, such as an oil shale retort or blast furnace, in which a highly uniform distribution of particle sizes of charge material and a desired height and level of stockline are obtained. The apparatus comprises a non-rotatable distribution hopper having a dividing means beneath choked feed means to substantially equally divide the material into a plurality of port means. The apparatus also includes partially movable distributor means and spreader means having surfaces of different inclinations to thoroughly mix the variously sized particles. Also disclosed is apparatus for providing gas lock means to prevent loss of gas pressure from the furnace, sensing the stockline level in the furnace, weighing the material in a hopper, temporarily storing certain amounts of charge material, and controlling the operation of the apparatus. The method includes various processes by which the apparatus may be operated to produce a stockline of the desired height, configuration and uniformity.