Patent ID: 9073797
Filing Date: 2015-07-07
Classification: C01F,C05D

Abstract:
1. A method for the manufacture of a magnesium sulphate product, the method comprising the steps of: (a) providing a sulphuric acid product that has been obtained as a by-product during the sulphate process for manufacturing titanium dioxide; (b) concentrating the sulphuric acid product to obtain a concentrated product that has a higher sulphuric acid concentration; (c) combining a magnesium-based neutralising agent with the concentrated product and allowing the magnesium-based neutralising agent and the sulphuric acid to react, to generate magnesium sulphate in solution; and (d) crystallising magnesium sulphate out of the solution as obtained in step (c), to obtain a crystalline magnesium sulphate product together with a remaining liquor.