Method for treating hydrogen storage alloy waste residues

Abstract

The invention relates to a method for treating hydrogen storage alloy waste residues, comprising the following steps of: (1) firstly putting 50-97% of hydrogen storage alloy smelted waste residues, 3-30% of fusion agent and 0-20% of coke as a reducing agent in a crucible of a vacuum induction smelting furnace, wherein the sum of the three components is 100%; (2) vacuumizing the vacuum induction smelting furnace, and introducing inert gas to the vacuum induction smelting furnace; (3) heating until all materials are smelted; (4) pouring the materials in a ladle pot; and (5) after cooling, taking out the ladle pot, and removing slag on the materials to obtain nickel base alloy. Compared with the prior art, the method disclosed by the invention has the benefits of simple equipment process, nosmoke dust, high alloy extraction rate and the like; and experiences prove that the overall recovery rate of three elements of Ni, Co and Mn in the slag is up to above 98%.

Description

technical field [0001] The invention relates to a treatment method for hydrogen storage alloy waste residue. Background technique [0002] With the continuous advancement of science and technology, human beings demand more and more energy, resulting in increasingly serious environmental pollution, and the shortage of primary energy such as oil and coal. It has caused a serious impact on the living environment of human beings, and the development and utilization of new energy is the best way to solve the above problems. Ni-MH battery (Ni-MH battery) is a green and environmentally friendly new type of energy, which has the advantages of high discharge capacity, long cycle life, and high current discharge. It has been widely used in various fields of industry and households, electric vehicles, The use of hybrid electric vehicles, electric bicycles, electric tools, etc. has greatly promoted the application of Ni-MH batteries, and hydrogen storage alloy powder as the negative el...

AI Technical Summary

Problems solved by technology

Most hydrogen storage alloy production enterprises are unable to recycle the metals in this part of the slag due to limitations in technical conditions, costs, etc., resulting in a serious waste of enterprise resources

Because these heavy metals in the slag can cause environmental pollution, the national law does not allow it to be discarded. It can only be handed over to enterprises with processing qualifications for processing, and high processing fees need to be paid, which greatly increases the operating costs of enterprises.