| Patent Number |
Title Of Patent |
Date Issued |
| 5925862 |
Process for the recovery of cobalt from ores containing metal sulfides |
July 20, 1999 |
| A process for the production of cobalt concentrate from an ore containing metal sulfides including sulfides of lead, zinc, and cobalt. The ore is crushed and subjected to a lead and cobalt flotation to separate the lead and cobalt from the zinc and produce a bulk lead cobalt concentrate. |
| 5122408 |
Two-sided lead composite and method of making same |
June 16, 1992 |
| A composite lead sheet product comprising a layer of lead or lead alloy having first and second surfaces. A first layer of a porous, non-metallic material is mechanically bonded to the first surface of the lead layer, and a second layer of porous, non-metallic material is mechanically bo |
| 5078860 |
Sequential and selective flotation of sulfide ores containing copper and molybdenum |
January 7, 1992 |
| A sequential flotation process for the separation of components of an ore containing sulfides of copper and molybdenum involves initially effecting selective flotation of the copper component directly from the ore by conditioning the ore with a combination of a source of bisulfite ion an |
| 5074994 |
Sequential and selective flotation of sulfide ores |
December 24, 1991 |
| A sequential flotation process for the separation of components of a sulfide ore selected from the group consisting of copper and lead sulfide containing ores and copper, zinc and lead sulfide containing ores in which the copper component is initially selectively floated directly from sa |
| 4808376 |
Method of alloying aluminum and calcium into lead |
February 28, 1989 |
| A method of alloying powdered aluminum into lead to form lead-calcium-aluminum alloys with relatively high recoveries and low standard deviations of recoveries. The method comprises melting lead, heating the lead, injecting simultaneously calcium-containing granules and aluminum powd |
