Non-ferrous smelting waste recovery system and use method thereof

Abstract

The invention discloses a non-ferrous smelting waste recovery system and a use method thereof. A first regulating tank is connected with an atmospheric pressure weak acid leaching module, the atmospheric pressure weak acid leaching module is connected with a primary liquid outlet tank and a primary slag outlet tank, the primary slag outlet tank is connected with a second regulating tank, and the second regulating tank is connected with a secondary oxygen pressure leaching module. Water is introduced for cooling, pressure is relieved, a kettle is started, a leaching solution is sent for sampleanalysis, filtered slag is weighed and then enters a slag washing and water washing process, the precipitated leaching solution can be pumped into the atmospheric pressure weak acid leaching module for multiple times of leaching, leaching residues are washed and filtered to produce lead-silver-sulfur residues, and the metal leaching rate in the leaching process is improved. During secondary oxygenpressure leaching, the reaction temperature, the reaction time, the oxygen partial pressure, the initial acidity and the liquid-solid ratio are correspondingly adjusted, so that the leaching rates ofzinc, copper, indium and the like are obviously improved, it is guaranteed that the leaching rates of copper and zinc are up to 90% or above, the optimal leaching is effectively selected, and the recovery space and the economic value are improved.

Description

technical field [0001] The invention relates to the technical field of recycling nonferrous smelting waste, in particular to a nonferrous smelting waste recycling system and a method for using the same. Background technique [0002] As we all know, smelting is a refining technology, which refers to extracting metals from ores by roasting, smelting, electrolysis and using chemical agents; reducing impurities contained in metals or increasing certain components in metals to produce the required The metal, copper smelting Austrian furnace soot has the characteristics of high zinc, indium, copper, lead and cadmium content, general silver content, high content of non-metal element sulfur and harmful impurities arsenic, high content of zinc, copper, indium, lead and cadmium in soot , and the comprehensive recovery value of associated indium and copper is high; therefore, while the main product is zinc sulfate, the comprehensive recovery of associated metals must be increased to im...

AI Technical Summary

Problems solved by technology

[0002] As we all know, smelting is a refining technology, which refers to extracting metals from ores by roasting, smelting, electrolysis and using chemical agents; reducing impurities contained in metals or increasing certain components in metals to produce the required The metal, copper smelting Austrian furnace soot has the characteristics of high zinc, indium, copper, lead and cadmium content, general silver content, high content of non-metal element sulfur and harmful impurities arsenic, high content of zinc, copper, indium, lead and cadmium in soot , and the comprehensive recovery value of associated indium and copper is high; therefore, while the main product is zinc sulfate, the comprehensive recovery of associated metals must be increased to improve the overall economic benefits; most of the existing copper smelting Austrian furnace soot is produced by atmospheric pressure Weak acid leaching, the content of metal waste in Austrian furnace soot is high, and the optimal leaching cannot be effectively selected, resulting in low recovery space and economic value, which in turn leads to low leaching rate of metals in the leaching process, reducing the efficient recovery efficiency of metal waste

Images