Production method for high-purity copper and low-oxygen bright copper rod

A production method and high-purity copper technology, which is applied in the production of high-purity copper and low-oxygen bright copper rods, can solve the problems of high fuel consumption and power consumption, copper rods that do not meet national standards, environmental protection, and low yields. , to achieve the effect of low production cost, low cost and simple operation

Inactive Publication Date: 2008-10-01
江苏万宝铜业集团有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the lead content in it failed to exceed the standard before casting, the finally obtained copper rod did not meet the national standard and th...

Method used

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Examples

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Effect test

Embodiment 1

[0026] According to the production method of the high-purity copper of the present embodiment, using red miscellaneous copper as raw material, specifically comprises the following steps:

[0027] (1), smelting slag removal:

[0028] ①. Feed smelting, control the temperature in the range of 1080-1120 degrees Celsius, so that the red copper is completely melted into a melt, and remove unmelted scrap iron, stainless steel, tweezer chromium wire and other high-melting metals through slag removal. It can remove high melting point metal inclusions (iron, nickel, chromium, stainless steel, manganese and other impurities) whose melting point is higher than that of copper.

[0029] ② Metals that melt with copper (such as aluminum, zinc, magnesium, antimony, tin, nickel and other metals, their specific gravity is smaller than that of copper, so they are arranged on the top of the copper liquid according to the activity sequence of the metal elements, these Metals are more active than c...

Embodiment 2

[0039] According to the production method of the low-oxygen bright copper rod of the present embodiment, red copper is used as raw material, because the nickel-chromium wire in the electric heating tube, stainless steel, iron, tin and lead in the solder head will inevitably be mixed in the red copper , Zinc in brass, other metals such as antimony, aluminum, magnesium and other non-copper impurity metals, these impurities must be removed to ensure that the copper purity is above 99.95%, in order to meet the requirements of the national standard for copper polished rods.

[0040] The main process of the production method of the low-oxygen bright copper rod in this embodiment is as follows: after the red miscellaneous copper is smelted and slag-removed, reduced by inserting wood, and copper is extracted, it is directly poured into the continuous casting and rolling equipment, and the temperature of the melt is controlled at 1120-1130 degrees Celsius. The smelting and slag removal...

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PUM

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Abstract

The invention relates to a high pure copper and a production method of low-oxidizing bright copper rod, comprising the steps of: performing melting and slag-skimming, poling and crystallisation by cooling to the waste copper crap to obtain the high pure copper; heating the copper to 1080-1120 DEG C to obtain the copper liquid, wherein the infusible high melting point impurities are eliminated by slag-skimming, after that, adding arenaceous quartz and silicon dioxide into the copper liquid and blowing excessive oxygen to convert the metals which are livelier than the copper into the scruff to remove, then pressurizing and blowing the oxygen to the copper liquid so that lead sub-oxide deposited at the bottom of furnace to sufficiently react with the arenaceous quartz to generate the scruff for removing the lead, guaranteeing the purity of the copper is larger than 99.5% and the lead content is less than 2ppm; the production method of low-oxidizing bright copper rod mainly comprises the steps of: taking purple copper crap as the raw material, directly placing the high pure copper liquid through the melting and slag-skimming, poling and crystallisation by cooling orderly into the continuous-casting and continuous-rolling apparatus to cast, the yield of low-oxidizing bright copper rod is larger than 98%, reaching the green environmental standard required by Europe Union ROHS, the production method has low production cost.

Description

technical field [0001] The invention relates to a production method of high-purity copper and low-oxygen bright rods. Background technique [0002] Copper is an important non-ferrous metal, which is widely used in various industrial sectors because of its excellent comprehensive properties, such as electrical conductivity, thermal conductivity, corrosion resistance and good processability. The existence of a very small amount of impurities such as lead, antimony, tin, beryllium, etc. will seriously affect the conductivity and other properties of copper. Even in different fields, there are strict requirements for the purity of copper. For example, the requirement for copper in the field of electrolysis is that its purity is at least Less than 99.95%; No. 1 electrolytic copper is required as raw material (Class A copper is better) no matter the traditional hot pressing method or the continuous casting and rolling method is used to produce copper rods. [0003] At present, the...

Claims

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Application Information

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IPC IPC(8): C22B15/14B23P17/00B22D21/00
Inventor 倪如宝姬高生
Owner 江苏万宝铜业集团有限公司
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