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Preparation process of oxidization and reduction air pipe

A preparation process and air duct technology, applied in the field of oxidation and reduction air duct preparation process, to achieve the effect of shortening the natural drying time, prolonging the service life and reducing stress

Inactive Publication Date: 2013-04-24
JIANGXI COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008]In addition, the refractory material falling off from the air duct enters the melt, which is not conducive to the formation of benign slag during the oxidation slagging period, affects the quality of anode copper, and even causes electrolysis process The electrolyte produces black suspension, which affects the quality of cathode copper

Method used

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  • Preparation process of oxidization and reduction air pipe
  • Preparation process of oxidization and reduction air pipe
  • Preparation process of oxidization and reduction air pipe

Examples

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preparation example Construction

[0043] this invention A preparation process for oxidation and reduction air ducts, specifically including the following processes:

[0044] Firstly, bend any end of an 8-meter-long, DN25 straight iron pipe into an angle of 100° five times to form an elbow with an arc length of 1.2 meters. figure 1 shown);

[0045] Secondly, kaolin and water glass are mixed in a ratio of 5:2-3 to make a refractory material, and the refractory material is evenly applied from the bending head end of the iron pipe prepared in the steps, so that the outer wall of the iron pipe is covered with refractory mud Evenly wrapped, the length of the iron pipe coated with refractory material is 4-5m, and the thickness of the refractory material is 5-10mm (such as figure 2 shown);

[0046] 3. Put the iron pipe covered with refractory material in the workshop to dry naturally for 10-30 days, that is Oxidation and reduction duct .

Embodiment 1

[0048] Firstly, bend any end of an 8-meter-long, DN25 straight iron pipe into an angle of 100° five times to form an elbow with an arc length of 1.2 meters. figure 1 shown);

[0049]Secondly, mix kaolin and water glass in a ratio of 5:2 to make a refractory material, and apply the refractory material evenly from the bent end of the iron pipe prepared in the steps, so that the outer wall of the iron pipe is covered with refractory mud evenly Wrapped well, the length of the iron pipe coated with refractory material is 4m, and the thickness of the refractory material is 5mm (such as figure 2 shown);

[0050] 3. Put the iron pipe covered with refractory material in the workshop to dry naturally for 10 days, that is Oxidation and reduction duct .

Embodiment 2

[0052] Firstly, bend any end of an 8-meter-long, DN25 straight iron pipe into an angle of 100° five times to form an elbow with an arc length of 1.2 meters. figure 1 shown);

[0053] Secondly, kaolin and water glass are mixed in a ratio of 5:3 to make a refractory material, and the refractory material is evenly smeared from the end of the bent head of the iron pipe prepared in the steps, so that the outer wall of the iron pipe is uniformly coated with refractory mud Wrapped well, the length of iron pipe coated with refractory material is 4.5m, and the thickness of refractory material is 7.5mm (such as figure 2 shown);

[0054] 3. Put the iron pipe covered with refractory material in the factory building to dry naturally for 15 days, that is, Oxidation and reduction duct .

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Abstract

The invention provides a preparation process of an oxidization and reduction air pipe. The preparation process includes the following steps that firstly, any end of a straight iron tube with 8m length and a 25 nominal diameter is bent for five times into a 100-degree angle so as to form a bent head with 1.2m arc length, kaolin and water glass are mixed according to a proportion of 5: (2-3) to prepare a refractory material, the refractory material is uniformly coated from one end of the bent head of the iron tube, the bent head of the iron tube is obtained by prior preparation so that the outer wall of the iron tube is uniformly wrapped by refractory mortar, the portion of the iron tube, which is coated with the refractory material, occupies 4-5m, the thickness of the refractory material is 5-10mm, and the iron tube covered with the refractory material is placed in a factory building for natural drying for 10-30 days to obtain the oxidization and reduction air pipe. The preparation process has the advantages that a traditional mode that refractory materials are used for manufacturing air pipes is changed, the manufacturing costs are reduced, labor intensity is reduced, the service life is prolonged, the changing frequency is reduced, influences on operation rate due to air pipe changing are reduced, and expected effects of meeting production requirements can be achieved.

Description

technical field [0001] The invention relates to a preparation process of an oxidation and reduction air duct. Background technique: [0002] At present, fixed anode furnace miscellaneous copper refining is a very mature smelting process in the world today. The fixed anode furnace project of Guixi Smelter was officially established in May 2006. The first and second phases of the project were completed in March 2007. It will be put into production in July and July. [0003] The miscellaneous copper refining process of the fixed anode furnace can be divided into: feeding and melting period, oxidation slagging period, reduction period, and casting period. 1. The feeding and melting period is to mix crude copper, miscellaneous copper, black copper and other raw materials (the purpose of mixing is to make slag and remove impurities smoothly), and the prepared raw materials and flux are transported to the main workshop by forklift 2. Rice platform or placed on the material boar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D7/24C22B15/14
Inventor 徐革雄袁春峰吴理鹏郭凯危良军黄柱定付宇姜国涛
Owner JIANGXI COPPER