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:
Jan. 05, 1999
Filed:
Jul. 18, 1995
Pioneer Licensing Inc., Ontario, CA;
Abstract
A process for the recovery of heavy metals, and in particular, mercury from a heavy metal-contaminated soil, or the recovery of mercury from a mercury-contaminated material, wherein the particles containing the heavy metal or mercury are separated from soil or mercury-contaminated material by a hydraulic mineral separator. The process may additionally include pre-classification of the soil particles to form a sample having essentially constant soil particle size prior to separation in the mineral separator. The process provides a ready method for removal of mercury from mercury-contaminated materials or heavy metals from heavy metal contaminated soils which process can allow recovery of the mercury or heavy metal for re-use. Alternatively, the process provides a smaller volume of mercury- or heavy metal-contaminated soil or material to be treated.