Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for comprehensively recovering carbon, lithium, aluminum and fluorine from aluminum electrolysis carbon residues
The invention provides a method for comprehensively recovering carbon, lithium, aluminum and fluorine from aluminum electrolysis carbon residues, and belongs to the technical field of comprehensive utilization of resources. The method comprises the steps that firstly, carbon is recycled through flotation, then decarburized tailings and a reconstruction agent are mixed, obtained ore phase reconstruction ore pulp and sulfuric acid are mixed, stirring leaching and solid-liquid separation are carried out, and leachate and a filter cake are obtained; after the filter cake and water are mixed and separated, washing liquid and leaching residues are obtained; adding potassium sulfate into the leachate, and reacting to obtain aluminum potassium sulfate crystals and aluminum-removed liquid; and adding lime into the aluminum-removed solution, separating, adding trisodium phosphate into the obtained purified solution, separating to obtain a lithium phosphate crude product, and further washing to obtain a lithium phosphate product. The method has the advantages of low electrolyte loss rate, high-valued utilization of valuable metals, good recovery effect of carbon and lithium, and high comprehensive utilization rate of resources.
本发明提供一种铝电解炭渣炭、锂、铝、氟综合回收的方法，属于资源综合利用技术领域。该方法首先通过浮选回收炭，然后将脱炭尾矿与重构剂混合，得到的矿相重构矿浆与硫酸混合，搅拌浸出，固液分离，得到浸出液和滤饼；滤饼与水混合分离后，得到水洗液和浸出渣；浸出液中加入硫酸钾，反应得到硫酸铝钾晶体和除铝后液；除铝后液中加入石灰，分离后，得到的净化溶液中加入磷酸三钠，分离得到磷酸锂粗产品，进一步洗涤，得到磷酸锂产品。该方法电解质损失率低、有价金属得到高值化利用、炭和锂回收效果好、资源综合利用率高。
Method for comprehensively recovering carbon, lithium, aluminum and fluorine from aluminum electrolysis carbon residues
The invention provides a method for comprehensively recovering carbon, lithium, aluminum and fluorine from aluminum electrolysis carbon residues, and belongs to the technical field of comprehensive utilization of resources. The method comprises the steps that firstly, carbon is recycled through flotation, then decarburized tailings and a reconstruction agent are mixed, obtained ore phase reconstruction ore pulp and sulfuric acid are mixed, stirring leaching and solid-liquid separation are carried out, and leachate and a filter cake are obtained; after the filter cake and water are mixed and separated, washing liquid and leaching residues are obtained; adding potassium sulfate into the leachate, and reacting to obtain aluminum potassium sulfate crystals and aluminum-removed liquid; and adding lime into the aluminum-removed solution, separating, adding trisodium phosphate into the obtained purified solution, separating to obtain a lithium phosphate crude product, and further washing to obtain a lithium phosphate product. The method has the advantages of low electrolyte loss rate, high-valued utilization of valuable metals, good recovery effect of carbon and lithium, and high comprehensive utilization rate of resources.
本发明提供一种铝电解炭渣炭、锂、铝、氟综合回收的方法，属于资源综合利用技术领域。该方法首先通过浮选回收炭，然后将脱炭尾矿与重构剂混合，得到的矿相重构矿浆与硫酸混合，搅拌浸出，固液分离，得到浸出液和滤饼；滤饼与水混合分离后，得到水洗液和浸出渣；浸出液中加入硫酸钾，反应得到硫酸铝钾晶体和除铝后液；除铝后液中加入石灰，分离后，得到的净化溶液中加入磷酸三钠，分离得到磷酸锂粗产品，进一步洗涤，得到磷酸锂产品。该方法电解质损失率低、有价金属得到高值化利用、炭和锂回收效果好、资源综合利用率高。
Method for comprehensively recovering carbon, lithium, aluminum and fluorine from aluminum electrolysis carbon residues
一种铝电解炭渣炭、锂、铝、氟综合回收的方法
LIU ZISHUAI (Autor:in) / LI XINGLAN (Autor:in) / LUO XIANPING (Autor:in) / TANG XUEKUN (Autor:in) / ZHOU HEPENG (Autor:in) / LI ZAOFA (Autor:in) / HU XIN (Autor:in) / JIA WENHAO (Autor:in) / PAN XINGCHEN (Autor:in)
20.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
B03D
Schaumschwimmaufbereitungsverfahren [Flotation]
,
FLOTATION
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C04B
Kalk
,
LIME
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