Method for the further processing of iron sulfate heptahydrate
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United States of America Patent
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Aug 22, 2017
Issued Date -
Jun 9, 2016
app pub date -
Dec 3, 2015
filing date -
Dec 9, 2014
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Abstract
The invention relates to a method for the further processing of iron sulfate heptahydrate into iron sulfate monohydrate. An aqueous solution or suspension of iron sulfate heptahydrate is formed and heated in a pressure vessel to a temperature above its boiling temperature at atmospheric pressure and where solid iron sulfate monohydrate and a solution are formed. The solid iron sulfate monohydrate is separated from the solution and fed into a pressure vessel at a temperature above the boiling temperature of the solution at the pressure in the pressure vessel, which is lower than the pressure during separation.
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