Industrial pure lead with liquid oxidation resistance and application thereof

Abstract

The invention relates to an industrial pure lead product, in particular to industrial pure lead with liquid oxidation resistance and application thereof. A main method is to add certain antioxidative microelements (selected from one or a compound of Zn, Ag, Cu, Al, Ge and Sn) in the common industrial pure lead so as to improve the antioxidant capacity of the surface of liquid lead at atmosphere pressure. The industrial pure lead product with the liquid oxidation resistance can be widely applied to preparing alloys taking Pb as a main raw material, such as Sn-Pb solder, grids of lead-acid accumulators, lead base Babbitt and the like, can reduce the surface oxidation and slag forming quantity of the alloys in industrial smelting, and achieves the aim of reducing lead loss caused by oxidation in the alloy smelting process.

Description

Technical field: [0001] The present invention relates to a kind of industrial pure lead product, especially provides a kind of industrial pure lead with anti-liquid oxidation performance and its application, which can be widely used in the preparation of alloys with Pb as the main raw material, such as: Sn-Pb solder; grids of acid batteries; and lead-based babbitt alloys, etc. Background technique: [0002] Pb is an ancient and important non-ferrous metal, which is widely used in modern industry, especially in the manufacture of Sn-Pb solder alloys, grids for lead-acid batteries, and the main raw material for lead-based babbitt alloy bearings. In recent years, with the rapid development of the automobile industry, the market demand for lead-acid batteries for vehicles has been increasing; due to the rapid development and popularization of electric bicycles in China, the demand for lead-acid batteries for electric bicycles has also increased significantly. New energy industri...

AI Technical Summary

Problems solved by technology

When the smelting is carried out in the atmosphere, due to the violent reaction between the oxygen in the air and the liquid Pb at high temperature, a large amount of oxide slag will be formed on the surface of the melt. This surface oxidation behavior not only causes more oxide inclusions in the alloy, but also It leads to the deterioration of the alloy, and due to the volatilization of lead oxide, it also pollutes the environment of the production workshop and affects the health of production workers. Especially due to the large amount of oxide slag produced on the surface, it leads to serious lead consumption in the production process and greatly increases the production cost. , especially when the price of industrial pure Pb as a raw material is gradually increasing, the problem caused by the lead consumption caused by the oxidation of the liquid surface is becoming more and more serious in actual production.

[0004] In order to solve this problem, some enterprises use vacuum or protective gas conditions for alloy melting. Due to the high vapor pressure of lead, when melting lead alloys in vacuum, the volatilization of lead is very serious as the temperature rises. Protective atmosphere smelting not only greatly increases the investment cost of production equipment, but also is very inconvenient in the process of alloy smelting and casting (adding alloy materials, stirring, casting, etc.), so it is urgent to find a convenient and low-cost method in actual industrial production. Method to solve the problem of liquid metal oxidation in the process of lead alloy smelting