Wastewater recycling method and wastewater circulating system in iron phosphate production process

The invention discloses a wastewater recycling method and a wastewater circulating system in an iron phosphate production process. The wastewater recycling method comprises the following steps of ferrous sulfate impurity removal, oxidative synthesis, primary filtering and washing, filter cake re-pul...

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Bibliographic Details
Main Authors WANG JUNTING, MA HANG, LIU GUILIAN, WAN BANGLONG, YANG MINBO, ZHA ZUOTONG, ZHANG ZHENHUAN
Format Patent
LanguageChinese
English
Published 02.04.2024
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:The invention discloses a wastewater recycling method and a wastewater circulating system in an iron phosphate production process. The wastewater recycling method comprises the following steps of ferrous sulfate impurity removal, oxidative synthesis, primary filtering and washing, filter cake re-pulping, aging and crystal transformation, secondary filtering and washing, drying, calcining, crushing, demagnetizing and packaging. And when the conductivity of the washing water of the secondary filtering and washing is less than 3000 [mu] s/cm, the washing water is recycled to the filter cake repulping after the primary filtering and washing and the water of the secondary filtering and washing, and the washing water of the secondary filtering and washing is recycled to the filter cake repulping after the primary filtering and washing and the secondary filtering and washing in a grading manner according to the water quality component characteristics. Valuable elements in the washing water can be effectively utilize
Bibliography:Application Number: CN202410021034