High-purify upper oxygen-free copper rod production method

An oxygen-free copper rod, pure technology, applied in the field of producing high-purity oxygen-free copper rods, can solve the problems that rare earth oxides cannot be effectively eliminated, reduce the oxygen content of oxygen-free copper rods, and affect the effect of rare earth treatment, etc. Achieve the effects of good copper purification effect, convenient automatic operation, and high product quality stability

Active Publication Date: 2009-07-29
JIANGSU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method of reducing the oxygen content of the oxygen-free copper rod by adding cerium-rich mixed rare earths, since the rare earths are added in batches and lack sufficient stirring, it is difficult to ensure the distribution of the rare earths in the copper liquid; The rare earth oxides formed cannot be effectively eliminated, which affects the effect of rare earth treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Select copper plates that meet the composition requirements of 1# electrolytic copper and have no defects such as flowering particles, acid traces, copper rust, and gray sand on the appearance as the furnace charge for batching. Charcoal is selected as the melting furnace covering agent, the charcoal particle size is 30-50mm, and the charcoal covering thickness is about 200mm. Before the charcoal is put into the furnace, it is screened, impurities are removed, and it is dried to produce CO and CO in the furnace. 2 The atmosphere prevents the high-temperature copper liquid from absorbing oxygen and hydrogen from the air. The holding furnace is covered with flake graphite, which is used to isolate the oxygen and hydrogen in the air from contacting the high-temperature copper liquid, so as not to make the copper rods produced brittle. The thickness of the graphite flake covering is 110mm. A Cu-20wt.%Ce master alloy rod with a diameter of 10mm is selected to be continuousl...

Embodiment 2

[0021] Select copper plates that meet the composition requirements of 1# electrolytic copper and have no defects such as flowering particles, acid traces, copper rust, and gray sand on the appearance as the furnace charge for batching. Charcoal is selected as the melting furnace covering agent, the charcoal particle size is 30-50mm, and the charcoal covering thickness is about 200mm. Before the charcoal is put into the furnace, it is screened, impurities are removed, and it is dried to produce CO and CO in the furnace. 2 The atmosphere prevents the high-temperature copper liquid from absorbing oxygen and hydrogen from the air. The holding furnace is covered with flake graphite, which is used to isolate the oxygen and hydrogen in the air from contacting with the high-temperature copper liquid, so as to avoid the production of copper rods from becoming brittle. The thickness of the graphite flake covering is 110mm. A Cu-15wt.%La master alloy rod with a diameter of 10mm is selec...

Embodiment 3

[0023] Select copper plates that meet the composition requirements of 1# electrolytic copper and have no defects such as flowering particles, acid traces, copper rust, and gray sand on the appearance as the furnace charge for batching. Charcoal is selected as the melting furnace covering agent, the charcoal particle size is 30-50mm, and the charcoal covering thickness is about 200mm. Before the charcoal is put into the furnace, it is screened, impurities are removed, and it is baked dry to generate a CO and CO2 atmosphere in the furnace to prevent the high-temperature copper liquid from absorbing oxygen and hydrogen from the air. The holding furnace is covered with flake graphite, which is used to isolate the oxygen and hydrogen in the air from contacting with the high-temperature copper liquid, so as to avoid the production of copper rods from becoming brittle. The thickness of the graphite flake covering is 110mm. A Cu-20% RE (La+Ce mixed rare earth) master alloy rod with a ...

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Abstract

The invention discloses a method for producing high-purity upward oxygen-free copper rods, which comprises the following steps: uniformly adding copper plates into a melting furnace in batches during melting of copper materials; adopting a Cu-RE intermediate alloy rod to continuously add single rare earth element or mischmetal element, realizing electromagnetic stirring in the melting furnace through induction heating coils, and making the rare earth element uniformly distributed in molten copper; and arranging a ceramic filtration baffle plate on the front of a sluice between the melting furnace and a heat-insulating furnace, making the ceramic filtration baffle plate completely cover the sluice, preventing rare earth oxide from being rolled into upward oxygen-free copper rods, and obtaining the high-purity upward oxygen-free copper rods. The method has the advantages of simple production technique, stable production process, less residual oxide inclusion formed by the rare earth element, good purification effect of the copper materials, and good product quality.

Description

technical field [0001] The invention relates to a method for producing high-purity upward-leading oxygen-free copper rods, in particular to a method for producing high-purity upward-leading oxygen-free copper rods by using rare earth elements to reduce the content of impurities such as oxygen in copper materials. Background technique [0002] As a kind of clean energy, wind power has developed rapidly in my country, and it is expected to reach 7 million kW by 2015. Wind farms (windmill fields) composed of dozens or even hundreds of wind generators jointly supply power to the grid, which is a trend of large-scale development and utilization of wind energy resources using modern technology. The operation of wind farms is generally monitored by computer to ensure that the wind turbines run in the best condition. The wind farms established in my country in recent years all adopt the operation mode of windmill fields. As the key equipment in the wind power generation system, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/14B22D11/16B22D11/11
Inventor 赵玉涛孙国平陈刚冯四平
Owner JIANGSU UNIV
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