Abstract

Burkeike is a double sulphate and carbonate of sodium crystal with the orthorhombic form undergoing a large non-stoichiometry as Na₆SO₄(2-y)CO₃(1+y), widely used in various industries such as potash and paper industries. A major application of particular interest is that burkeite is used as a carrier material in customer care products. The composition of crystal particle mixture of burkeite with Na₂CO₃ and Na₂SO₄formed from aqueous slurry is influenced by the process conditions and provide a great impact on quality of the product. In this study, process Raman technique is used for in-situ detecting burkeite formation and dissolution of Na₂CO₃ and Na₂SO₄ to achieve process kinetic information, with an aid of PLS data analysis technique. The solid particle and solution compositions are determined with respect to the process conditions.  

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