Process for the recovery of certain metallic and non-metallic constituents of waste slag from reverberatory refining of copper pyritic type ores

Claim 1

A WET PROCESS FOR THE SEPARATION, ISOLATION AND RECOVERY OF THE ACID-SOLUBLE METALLIC AND NON-METALLIC VALUES IN WASTE SLAG RESULTING FROM THE REVERBERATORY REFINING OF COPPER PYRITIC TYPE ORES WHICH COMPRISES: CRUSHING THE SLAG; ADDING A WARM SOLUTION CONSISTING OF HCI AND AT LEAST ONE OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF PERCHLORIC, CHLORIC, CHLOROUS, AND HYPOCHLOROUS ACIDS AND THEIR SALTS TO SAID SLAG, SAID SOLUTION HAVING A NORMALITY OF BETWEEN 3.0 AND 4.5 AT THE TIME IT IS ADDED TO THE SLAG; MIXING THE SLAG AND ACID TO DISSOLVE THE ACID SOLUBLES IN SAID SLAG AND TO OXIDIZE THE FERROUS IRON THEREIN TO FERRIC IRON; SEPARATING THE SOLID INSOLUBLE RESIDUE FROM THE SOLUTION OF SILICIC ACID AND THE ACID SALTS OF THE ACID SOLUBLE IRON, ALUMINUM, COPPER, ZINC, MANGANESE, MAGNESIUM AND CALCIUM ORIGINALLY PRESENT IN SAID SLAG; FORMING A GEL BY REMOVAL OF WATER FROM SAID SEPARATED SOLUTION; AND RECOVERING THE IRON, COPPER, CALCIUM, SILICON, ZINC, MAGNESIUM AND MANGANESE VALUES FROM SAID SOLUTION.