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Plastic-aluminum separating agent and plastic-aluminum separating method

An aluminum-plastic separation and separation agent technology, applied in the field of separation agents, can solve the problems of equipment corrosion, inability to industrialize application, human body irritation, etc., and achieve the effect of low corrosiveness and pollution, excellent separation effect, and complete separation.

Inactive Publication Date: 2008-04-23
曹光军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nitric acid or caustic soda has good corrosiveness, it pollutes the environment and corrodes the equipment seriously, so it cannot be used industrially; moreover, when the aluminum foil is dissolved too much or all of it is dissolved, more aluminum salt solution is produced and the elemental substance cannot be fully recovered. aluminum
In addition, due to the high price of nitric acid and caustic soda, the cost of industrial aluminum-plastic separation of aluminum-plastic composite packaging using nitric acid or caustic soda is obviously too high, and will cause new pollution to the environment; especially nitric acid, not only for equipment, etc. Environmental pollution, and it is very irritating to the human body, so it is actually impossible to implement it effectively in production
As for the existing technology of using certain organic solvents (such as chlorinated aromatics or acetone, etc.)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]The aluminum-plastic separating agent of this embodiment is mainly made by mixing formic acid and dichloromethane, wherein the weight ratio of formic acid is 90 parts, and the weight ratio of dichloromethane is 7 parts.

[0030] The specific steps of the aluminum-plastic separation method using the separating agent of this embodiment are as follows:

[0031] 1. Crushing and cleaning-crush the collected waste aluminum-plastic composite packaging materials into blocks with a grinder, and then clean them;

[0032] 2. Liquid preparation-put the above-mentioned aluminum-plastic separating agent into the water tank so that the concentration of the separating agent in the water tank is 12%, and the temperature of the solution in the water tank is maintained at 35°C;

[0033] 3. Soaking——put the aluminum-plastic composite package broken into blocks into a container with mesh, and then put the container into the sink with a hoisting machine, so that the container is completely immers...

Embodiment 2

[0043] The aluminum-plastic separating agent of this embodiment is mainly made by mixing formic acid and dichloromethane, and a non-ionic surfactant is added. The weight ratio of formic acid is 160 parts, and the weight ratio of dichloromethane is 9 parts. Parts, the weight ratio of non-ionic surfactant: 2 parts.

[0044] The specific method for aluminum-plastic separation using the separating agent of this embodiment is basically the same as that of the first embodiment, but the difference is:

[0045] 1) In step 1, the waste aluminum-plastic composite packaging is crushed into strips;

[0046] 2) In step 2, the concentration of the separating agent in the water tank is 20%, and the temperature of the solution in the water tank is maintained at 28°C;

[0047] 3) In step 3, the soaking time is 8 hours;

[0048] 4) In step 6, the separated aluminum foil and plastic film are cleaned with lime water respectively, and then dried;

[0049] After using the aluminum-plastic separating ag...

Embodiment 3

[0055] The components of the aluminum-plastic separating agent of this embodiment are the same as those of the second embodiment, but the weight ratio of each component is different. The weight ratio of formic acid is 42 parts, and the weight ratio of methylene chloride is 6 parts. Parts, the weight ratio of non-ionic surfactant: 3 parts.

[0056] The specific method for aluminum-plastic separation using the separating agent of this embodiment is basically the same as that of the second embodiment, the difference is:

[0057] 1) In step 2, the mass concentration of the separating agent in the water tank is 25%, and the temperature of the solution in the water tank is maintained at 20°C;

[0058] 2) In step 3, the soaking time is 6 hours;

[0059] 3) An ultrasonic generator is installed on the inner wall of the water tank, and the ultrasonic generator is turned on while soaking in step 3.

[0060] After using the aluminum-plastic separating agent and aluminum-plastic separating met...

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Abstract

The present invention relates to aluminum-plastic separating agent and aluminum-plastic separating process, and belongs to the field of composite aluminum-plastic material recovering technology. The aluminum-plastic separating agent consists of formic acid and dichloromethane as the main components as non-ionic surfactant. The aluminum-plastic separating process with the aluminum-plastic separating agent includes the steps of crushing and washing composite aluminum-plastic material, compounding aluminum-plastic separating agent liquid, soaking, taking out, centrifugally separating, washing and drying. The present invention has high aluminum-plastic separating efficiency, less environmental pollution and low cost, and is suitable for industrial recovery of waste composite aluminum-plastic material.

Description

Technical field [0001] The present invention relates to a separating agent, in particular to a separating agent used for separating aluminum and plastics in waste aluminum-plastic composite packaging. At the same time, the invention also relates to a separating agent for separating aluminum-plastic composite packaging. The method belongs to the technical field of separation of composite aluminum-plastic materials. Background technique [0002] Aluminum-plastic composite packaging is widely used for packaging various items in daily life with its good light-blocking and heat-preserving properties. However, the large amount of discarded and non-degradable aluminum-plastic composite packaging produced after use not only loses a large amount of aluminum and plastic resources, but also pollutes the environment. According to statistics from relevant state departments, this type of discarded aluminum-plastic composite packaging is as high as three million tons per year. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/26B29B17/02
CPCY02W30/62
Inventor 曹光军
Owner 曹光军
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