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:
May. 31, 1977
Filed:
Nov. 10, 1975
James R Rivers, Coalfield, TN (US);
Other;
Abstract
An improved metal recovery unit for recovering metal from metal-laden liquids by electrolysis. The metal recovery unit comprises container means including a tubular cathode defining an upright substantially cylindrical wall having a top end closed by cover means and a bottom end closed by base means. In one embodiment, metal-laden liquid is introduced into the container means through a first opening in the cover means disposed generally adjacent the anode. Metal-depleted fluid is withdrawn from the container means through a further opening in the cover means at a location spaced apart from the first opening. An elongated anode is concentrically disposed within the cathode. The liquid within the container is recirculated by continually withdrawing a portion thereof from a passageway in the base means and reintroducing such fluid into the container means through an inlet passage in the cover means tangentially and angularly downward with respect to the cathode wall to develop a generally downwardly helical flow path of liquid adjacent the cathode. Control means provides at least first and second current densities at the cathode for depositing metal on the cathode at a reduced rate as metal is depleted from the recirculated fluid.