Process for producing crystallized metal sulfates
First Claim
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1. A process for generating a metal sulfate, the process comprising:
- crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor, the mother liquor comprising an uncrystallized metal sulfate;
separating the crystallized metal sulfate from the mother liquor;
basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and
using the basic metal salt upstream of crystallizing the metal sulfate.
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Abstract
A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.
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30 Claims
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1. A process for generating a metal sulfate, the process comprising:
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crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor, the mother liquor comprising an uncrystallized metal sulfate; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification