Pure copper smelting cleaner and preparation method thereof

Abstract

The invention relates to a pure copper smelting cleaner and a preparation method thereof. The pure copper smelting cleaner comprises the components in percentage by weight as follows: 20-30% of Aoki powder, 20-30% of cullet 7SiO2.2Na2O, 40-50% of calcium carbide CaC2, 5-10% of borax Na2B4O7 and less than or equal to 1% of other impurities. The preparation method comprises the following steps of: burning Aoki to block charcoal; preparing cullet in sheet which is 10-15mm; preparing calcium carbide in a drying environment to particles which are 10-20mm, and then vacuum packaging; placing borax crystalline to a resistance furnace, first, melting to remove crystal water at about 900 DEG C, then condensing to block; then, preparing particles which are 5-10mm; and preparing and packaging the components in the drying environment, packaging and vacuumizing, and then, storing in the drying environment for later use.

Description

technical field [0001] The invention relates to a pure copper smelting cleaner formula and a preparation method thereof, which are used for high-purity, high-conductivity, contact wires, pantographs, grippers, conductive cables, electrode plates, busbars, etc. More than 1% copper castings in the melting process of clean liquid metal solvent and its preparation technology. Background technique [0002] The air-absorbing slagging in pure copper smelting is a very complex and difficult technical problem that plagues casting production. At present, for high-purity, high-conductivity, contact wires, pantographs, holders, conductive cables, electrode plates, bus bars and other pure copper or copper parts with trace element content not greater than 1%, a single Plant ash or charcoal materials are used as liquid metal covering agents, but there is no ideal composite cleaning agent. Due to the large porosity of plant ash or charcoal, it cannot completely block the contact between ai...

AI Technical Summary

Problems solved by technology

At present, for high-purity, high-conductivity, contact wires, pantographs, holders, conductive cables, electrode plates, bus bars and other pure copper or copper parts with trace element content not greater than 1%, a single Plant ash or charcoal materials are used as liquid metal covering agents, but there is no ideal composite cleaning agent. Due to the large porosity of plant ash or charcoal, it cannot completely block the contact between air and liquid metal, and oxygen in the air can easily pass through its gaps. Cause pure copper in the smelting process of air absorption oxidation slagging, so that pure copper castings have serious quality problems such as porosity, pinholes, slag holes, porosity, hydrogen embrittlement cracks, etc., reducing the quality of pure copper castings and the mechanical properties of materials And physical properties, especially the tensile strength and electrical conductivity are greatly reduced, and in severe cases, large quantities of pure copper castings are scrapped