PROCESSING OF PHOSPHATE COMPOUNDS
A method for processing of phosphate compounds comprises providing (S10) of a primary liquid being an acid solution comprising at least phosphorous. Phosphate compounds comprising iron are precipitated (S20) from the primary liquid by adding (S22) a first additive material to the primary liquid. The...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
15.03.2024
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Subjects | |
Online Access | Get full text |
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Summary: | A method for processing of phosphate compounds comprises providing (S10) of a primary liquid being an acid solution comprising at least phosphorous. Phosphate compounds comprising iron are precipitated (S20) from the primary liquid by adding (S22) a first additive material to the primary liquid. The first additive material comprises iron hydroxide and a solid filter-aid material. First solid matter, comprising the precipitated phosphate compounds and the solid filter-aid material is separated (S28) by a first filtering. The separated first solid matter is exposed (S30) for an alkaline solution, causing a dissolution (S32) of phosphate compounds and precipitation (S32) of iron hydroxide, which gives a secondary liquid. Second solid matter comprising the precipitated iron hydroxide and the solid filter-aid material is removed (S38) by a second filtering. Part of the second solid matter is recycled (S40) as the first additive material. A system for processing of phosphate compounds is also disclosed. |
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Bibliography: | Application Number: SE20220051063 |