A method for recycling fence-type aluminum-based lead alloy anode waste plates for zinc electrowinning

Abstract

A method for recycling fence type aluminum base lead alloy anode waste plates for zinc electrodeposition is provided. The method comprises the following steps that after the anode waste plates are soaked in hot water and dried, manganese dioxide on the surfaces of the anode waste plates is cleaned by using a double-face steel wire brush wheel and reduced to M n 2 + ions, after plastic protecting covers and insulators of the anode waste plates are removed, and the anode waste plates are stacked on a smelting frame; after the anode waste plates are conveyed into a thermo induction trolley furnace to be melted, ash residue is taken out, and lead and lead alloy liquid are obtained; after the ash residue is subjected to ball milling, sodium hydroxide solution is added to conduct stirring and filtrating, zinc sulfide or barium sulfide are added into colature, lead sulfide is obtained, the lead sulfide is placed in a muffle furnace to be subjected to a reaction and nitrogen protection is conducted, the lead sulfide is cooled to be at room temperature and is dissolved in sodium hydroxide solution, and lead is obtained after washing and filtrating; after being put into sodium hydroxide to conduct oil removing and washing, aluminum cores and aluminum conductive beams are put into dilute nitric acid to remove impurities, the obtained aluminum cores are smelted, aluminum and aluminum alloy ingots are obtained by casting, and aluminum cores are obtained through heat extrusion drawing. According to the recycling fence type aluminum base lead alloy anode waste plates for the zinc electrodeposition, energy consumption and producing cost are low, no waste water generates, the metal burning loss is little, and the recycling ratio is high.

Description

technical field [0001] The invention relates to the technical field of a recycling method for fence-type aluminum-based lead alloy anode waste plates for zinc electrowinning. Background technique [0002] my country's secondary lead industry is gradually developing under the premise of paying more and more attention to environmental protection and comprehensive utilization of resources. With the rapid development of my country's automobile, communication and chemical industries, the requirements for lead are constantly increasing, and the price of lead is also rising. Secondary lead and its utilization are increasingly valued. Therefore, the recovery of lead in the anode plate is becoming more and more important, and the recovery of the fence-type aluminum-based lead alloy anode plate for non-ferrous metal electrowinning used in zinc electrowinning is also gradually paid attention to. [0003] A large amount of anode slime will be produced in the anode during the electrowin...

AI Technical Summary

Problems solved by technology

[0004] The traditional recycling of waste anode plates is to first remove the anode slime on the surface of the anode plate, then cut the lead-clad copper conductive beams from the plate surface, and then cut the plate surface into small pieces and add them to the intermediate frequency furnace for smelting. The disadvantage of the process is that the process is long, the recovery rate is low, the operating environment is harsh, the impact on the environment is large, and large-scale environmental pollution accidents often occur

In addition, because the fence-type aluminum-based lead alloy anode plate contains a metal aluminum core, a plastic fixing frame, a lead alloy, and a conductive ceramic film, according to the traditional plate recycling method, the cutting and processing procedures are troublesome, and the intermediate frequency furnace needs to be recharged many times. Long time, large burn loss