Method for high-value recycling of pyrite-containing waste residues

Method for high-value recycling of pyrite-containing waste residues

The invention relates to the technical field of solid waste resource recycling, in particular to a method for high-value recycling of pyrite-containing waste residues. The method comprises the following steps: carrying out wet leaching on the pyrite-containing waste residue to obtain a leachate; add...

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Hauptverfasser: PENG YUXIN, YAN KUN, LIU ZHONGKAI, ZHANG YANLI, TIAN YE, LI HUAXIA, SUN FENGJUAN, KANG ZESHUANG, FAN ZEKUN, HU QIUYUN
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Sprache:chi ; eng
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CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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creator PENG YUXIN
YAN KUN
LIU ZHONGKAI
ZHANG YANLI
TIAN YE
LI HUAXIA
SUN FENGJUAN
KANG ZESHUANG
FAN ZEKUN
HU QIUYUN
description The invention relates to the technical field of solid waste resource recycling, in particular to a method for high-value recycling of pyrite-containing waste residues. The method comprises the following steps: carrying out wet leaching on the pyrite-containing waste residue to obtain a leachate; adding an iron source into the leachate, and carrying out directional conversion to obtain an iron-rich solution; adding an organic additive and a seed crystal into the iron-rich solution, crystallizing, and then carrying out solid-liquid separation to respectively obtain ferrous sulfate crystals and an acidic solution; distilling and purifying the acidic liquid to respectively obtain sulfuric acid and an organic additive; wherein the organic additive obtained by distillation and purification is returned to the crystal for cyclic utilization; according to the method, full-quantization high-value utilization is carried out on the pyrite-containing waste residues, iron resources and sulfur resources in the waste residue
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subjects CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
title Method for high-value recycling of pyrite-containing waste residues
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