Method for processing iron-laden spent sulfuric acid
AssigneeTronax Pigments GMbH
InventorsGerhard Auer, Berndt-Ullrich Kohler, Benno Laubach
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Abstract
The invention concerns a method for processing heavy metal-laden spent sulfuric acid. For this, iron-laden spent sulfuric acid or iron-laden sulfuric materials obtained therefrom are reacted with a material that contains iron chloride and optionally other metal chlorides, producing iron (II) sulfate. The spent sulfuric acid preferably derives from titanium dioxide production.
Claims22
-21. (canceled)
A method of processing iron-laden spent sulfuric acid or iron-laden sulfuric acid materials obtained therefrom, comprising the steps of reacting the spent sulfuric acid or sulfuric acid material with a material that contains iron chloride, and optionally other metal chlorides, whereby iron(II) sulfate is obtained.
Dependencies are inferred from the claim text.