PREPARATION METHOD FOR IRON PHOSPHATE AND PREPARATION METHOD FOR LITHIUM IRON PHOSPHATE
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United States of America
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Feb 13, 2025
app pub date -
Nov 30, 2022
filing date -
Nov 30, 2022
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Abstract
In one aspect, a preparation method of iron phosphate includes: mixing pyrite cinder and an sulfite evenly in water to obtain a first mixed system; adding phosphoric acid and a buffer to the first mixed system to perform a leaching reaction; performing a first solid-liquid separation on a slurry obtained from the leaching reaction to obtain a first filtrate and a first residue; introducing air into the first filtrate and then performing a first stirring reaction on the first filtrate; performing a second solid-liquid separation on a slurry obtained from the first stirring reaction to obtain a second filtrate and a second residue; and calcining the second residue to obtain iron phosphate.
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