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High-temperature depainting device for discarded zip-top cans, and depainting method

A technology for discarding cans and stripping paint, which is applied in the removal of solid waste and other directions, can solve the problem of inability to remove the carbides on the surface of the cans, and achieve the effects of shortening the treatment time, simplifying the recycling process and simple operation.

Active Publication Date: 2018-01-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-temperature paint stripping device for discarded pop cans, which solves the problem that the existing paint stripping devices for discarded pop cans cannot remove carbides on the surface of pop cans

Method used

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  • High-temperature depainting device for discarded zip-top cans, and depainting method
  • High-temperature depainting device for discarded zip-top cans, and depainting method
  • High-temperature depainting device for discarded zip-top cans, and depainting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Step 1. Clean the discarded pop cans, cut them into discs with a diameter of 0.5 cm, conduct thermogravimetric analysis on the discarded pop cans discs, and determine that the temperature range for high-temperature paint removal is within the range of 20°C to 650°C;

[0067] Step 2. Cut the discarded cans into pieces of 3cm×3cm and clean them. During the cleaning process, add detergent and stir to remove sugar stains and dust remaining on the surface of the discarded cans. Dry the cleaned pieces at a temperature of 80°C. Dried, remove the moisture and set aside.

[0068] Step 3. Weigh the discarded pop can fragments after the pretreatment in step 2, and record it as M 1 , and then place it in the rotary reaction chamber 2 for high-temperature paint removal treatment;

[0069] Wherein, the high-temperature paint stripping temperature is 500° C., and the paint stripping time is 20 minutes.

[0070] Step 4. Rotate and oscillate the rotary reaction chamber 2 in step 3, os...

Embodiment 2

[0075] Step 1. Clean the discarded pop cans, cut them into discs with a diameter of 0.5 cm, conduct thermogravimetric analysis on the discarded pop cans discs, and determine that the temperature range for high-temperature paint removal is within the range of 20°C to 650°C;

[0076] Step 2. Cut the discarded cans into pieces of 3cm×3cm and clean them. During the cleaning process, add detergent and stir to remove sugar stains and dust remaining on the surface of the discarded cans. Dry the cleaned pieces at a temperature of 80°C. Dried, remove the moisture and set aside.

[0077] Step 3. Weigh the discarded pop can fragments after the pretreatment in step 2, and record it as M 1 , and then place it in the rotary reaction chamber 2 for high-temperature paint removal treatment;

[0078] Wherein, the high-temperature paint stripping temperature is 520° C., and the paint stripping time is 20 minutes.

[0079] Step 4. Rotate and oscillate the rotary reaction chamber 2 in step 3, os...

Embodiment 3

[0085] Step 1. Clean the discarded pop cans, cut them into discs with a diameter of 0.5 cm, conduct thermogravimetric analysis on the discarded pop cans discs, and determine that the temperature range for high-temperature paint removal is within the range of 20°C to 650°C;

[0086] Step 2. Cut the discarded cans into pieces of 3cm×3cm and clean them. During the cleaning process, add detergent and stir to remove sugar and dust remaining on the surface of the discarded cans. Dry the cleaned pieces at 100°C Dried, ready to use after removing water;

[0087] Step 3. Weigh the discarded pop can fragments after the pretreatment in step 2, and record it as M 1 , and then place it in the rotary reaction chamber 2 for high-temperature paint removal treatment;

[0088] Among them, the high-temperature paint stripping temperature is 540° C., and the paint stripping time is 20 minutes.

[0089] Step 4. Rotate and oscillate the rotary reaction chamber 2 in step 3, oscillate the surface c...

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Abstract

The invention discloses a high-temperature depainting device for discarded zip-top cans. The high-temperature depainting device comprises a box body. The outer wall of the box body is provided with atemperature control panel and a speed control panel separately, and the box body is internally provided with a rotating reaction chamber of which the inner wall is provided with heating wires; the temperature control panel is connected to the heating wires, and the rotating reaction chamber is connected to a motor connected to the speed control panel; the lower part of the rotating reaction chamber is provided with a drawable collecting plate below which a fragment collecting chamber is arranged, and the diameter of an upper port of the fragment collecting chamber is no less than the diameterof a lower port of the rotating reaction chamber; and the problem that the surface carbide can not be removed through an existing high-temperature depainting device for the discarded zip-top cans is solved. The invention also discloses a high-temperature depainting method for the discarded zip-top cans, and the problems that the surface carbide is hard to remove through an existing high-temperature depainting method for the discarded zip-top cans with low processing capability, and secondary pollution is generated are solved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy regeneration devices, relates to a high-temperature paint stripping device for discarded pop cans, and also relates to a method for using the paint stripping device to perform high-temperature paint stripping on discarded pop cans. Background technique [0002] Aluminum cans are light, beautiful, easy to use and easy to carry, and are one of the most popular packaging materials in the beverage packaging industry in the world today. At present, the world consumes about 150 billion pop cans every year, and consumes more than 2 million tons of aluminum alloy, accounting for about 15% of the world's total aluminum consumption. Since pop cans are used and discarded, a large amount of waste and old aluminum pop can resources have been generated. The existing raw materials for aluminum pop cans are mainly high-quality 3004 / 3104 aluminum alloys, and there is only a small amount of loss during use,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 王武孝罗京兆刘雪雍
Owner XIAN UNIV OF TECH
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