Method for producing high-conductivity oxygen-free copper and smelting device

A high-conductivity, oxygen-free copper technology, applied in stirring devices, lighting and heating equipment, furnace components, etc., can solve the problems of high production cost, copper volatilization, limited heating and volatilization time, etc., to increase contact The effect of area, low production cost and short production cycle
CN102994786AInactive Publication Date: 2013-03-27JINZHOU NEW CENTURY QUARTZ GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JINZHOU NEW CENTURY QUARTZ GROUP CO LTD
Publication Date
2013-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for producing high-conductivity oxygen-free copper and a smelting device. According to the method, high-purity electrolytic copper blocks are washed cleanly, dried and fed into a graphite crucible, and is vacuumized, and a main heater is started to smelt the copper blocks into a copper liquid; a graphite mixer suspended in the graphite crucible is started to make up-down reciprocating movement and mixing in the graphite crucible to obtain liquid oxygen-free copper, and the liquid oxygen-free copper is poured in an ingot puller for crystallization and ingot pulling to obtain oxygen-free copper ingots. The smelting device comprises a vacuum smelting furnace body, the main heater and the graphite crucible which is arranged in a receiving cavity of the furnace body, wherein the bottom of the graphite crucible is provided with a liquid discharge port and a liquid discharge control valve. The smelting device is characterized in that the graphite mixer capable of lifting is suspended in the graphite crucible. The method and the smelting device have the advantages that the use of the graphite mixer for mixing increases the contact area between oxygen gas and graphite in copper liquid, and high-efficiency oxygen removal is achieved; and the requirements for the raw materials are not strict, the production cost is low, and the conductivity of the oxygen-free copper produced meets the requirements of high-class conducting wires.
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Description

technical field

[0001] The invention relates to a method for preparing high-conductivity oxygen-free copper and a chemical material device. Background technique

[0002] Oxygen-free copper is a metal material with high conductivity, corrosion resistance, low temperature resistance, good processing and welding performance, and is widely used in sputtering targets, high-end audio cables and high-end microelectronic device connection cables. The national standard TU0 oxygen-free copper and the American standard C10100 oxygen-free copper are both high-grade copper materials, with an electrical conductivity of IACS 101% and a residual resistivity of 200. In the application of high-end wires such as superconductor cables and particle accelerator components, oxygen-free copper with higher conductivity has become the main research direction. Currently, the conductivity of oxygen-free copper can reach IACS 102%.

[0003] The improvement of copper conductivity is related to the reduc...

Claims

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