System for recovering valuable metals in sludge
The invention discloses a system for recovering valuable metals in sludge, which comprises a leaching system, a leaching post-treatment system and an extraction system, and the leaching system comprises at least two stages of leaching devices which are connected in series; the leaching post-treatmen...
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| creator | DUAN JIANJUN ZENG HAILONG MA LIKUN LOU JIANGHUI WANG JINRUI WANG JUAN LI ZURU ZHANG JINYONG YU JINLONG HUANG DENGKE MA ZHIQING |
| description | The invention discloses a system for recovering valuable metals in sludge, which comprises a leaching system, a leaching post-treatment system and an extraction system, and the leaching system comprises at least two stages of leaching devices which are connected in series; the leaching post-treatment system comprises a liquid storage tank, an iron removal reaction tank, a second solid-liquid separation device, an acid dissolution tank, a generation tank and a third solid-liquid separation device; the extraction system comprises at least three stages of extraction devices which are connected in series, the first-stage extraction device is connected with a liquid outlet of the second solid-liquid separation device, and the last-stage extraction device is connected with the last-stage leaching device. The recovery of copper and nickel in the filtrate after iron removal can be effectively realized, and pure copper sulfate and nickel sulfate solutions are respectively produced; the system for recovering valuable m |
| format | Patent |
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| subjects | CHEMISTRY CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL FERROUS OR NON-FERROUS ALLOYS METALLURGY MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | System for recovering valuable metals in sludge |
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