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Waste tire rubber powder normal-temperature desulfuration method

A waste tire rubber, room temperature technology, applied in plastic recycling, recycling technology and other directions, can solve the problems of application limitations, poor desulfurization effect, low added value of rubber powder, etc., to reduce desulfurization cost and desulfurization energy consumption, reduce desulfurization The effect of reducing cost and grinding difficulty

Active Publication Date: 2016-02-03
贵州华宇橡胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although in the prior art, waste tires can be desulfurized at atmospheric pressure or at low temperature, the processing method still cannot meet the requirements of desulfurization of waste tires to prepare rubber powder products, which in turn leads to the recycling of waste tires to prepare rubber powder products. The application in the chemical industry is limited, resulting in low added value of rubber powder; the main reason is that the desulfurization effect in the process of recycling waste tires to prepare rubber powder is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for desulfurizing waste tire rubber powder at normal temperature. After the waste tires are cut into 10-mesh particles, they are sent to a magnetic separator for magnetic separation, and then treated with microwave radiation for 20 minutes, and then sent to a grinder to grind them into 40 After the target powder, it is sent to a magnetic separator for magnetic separation treatment, then it is placed in ammonia water, mixed according to the mass ratio of 1:2, soaked for 1 hour, and then the powder is filtered to obtain a filter residue, and the After the filter residue was treated with microwave radiation for 5 minutes, it was ground into a 70-mesh powder in a grinder, and then sent to a magnetic separator for magnetic separation treatment, and then a desulfurizer was added to it, and ultrasonic treatment was used for 10 seconds. Obtain the mixed powder, then soak the mixed powder and ammonia water for 10 minutes according to the mass ratio of 1:1.1, and then fil...

Embodiment 2

[0027] A method for desulfurizing waste tire rubber powder at normal temperature. After the waste tires are cut into 20-mesh particles, they are sent to a magnetic separator for magnetic separation, and then treated with microwave radiation for 30 minutes, and then sent to a grinder to grind them into 60 After the target powder, it is sent to a magnetic separator for magnetic separation treatment, and then it is placed in ammonia water, mixed according to a mass ratio of 1:3, soaked for 3 hours, and then the powder is filtered to obtain a filter residue, and the After the filter residue is treated with microwave radiation for 10 minutes, it is ground into a 90-mesh powder in a grinder, and then sent to a magnetic separator for magnetic separation treatment, and then a desulfurizer is added to it, and ultrasonic treatment is used for 20 seconds. Obtain the mixed powder, then soak the mixed powder and ammonia water for 20 minutes according to the mass ratio of 1:1.5, and then fil...

Embodiment 3

[0034] A method for desulfurizing waste tire rubber powder at normal temperature. After the waste tires are cut into 15-mesh particles, they are sent to a magnetic separator for magnetic separation, and then treated with microwave radiation for 25 minutes, and then sent to a grinder to grind them into 50 After the target powder, it is sent to a magnetic separator for magnetic separation treatment, and then it is placed in ammonia water, mixed according to a mass ratio of 1:2.5, soaked for 2 hours, and then the powder is filtered to obtain a filter residue, and the After the filter residue is treated with microwave radiation for 8 minutes, it is placed in a grinder and ground into an 80-mesh powder, and then sent to a magnetic separator for magnetic separation treatment, and then a desulfurizer is added to it, and ultrasonic treatment is used for 15 seconds. Obtain the mixed powder, then soak the mixed powder and ammonia water for 15 minutes according to the mass ratio of 1:1.3,...

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Abstract

The invention relates to the technical field of waste tire rubber powder normal-temperature desulfuration, in particular to a waste tire rubber powder normal-temperature desulfuration method. A waste tire is cut into granules, microwave radiation and magnetic separation are carried out three times, ultrasonic wave catalysis is carried out one time, and a desulfurizing agent is added, so that the waste tire can be desulfurized at normal temperature, and recycling and desulfuration cost and desulfuration energy consumption for the waste tire are lowered; in addition, the ammonia water soaking treatment technology is introduced, so that the bond energy of an S-S bond and an S-C bond are seriously damaged under the mixed treatment of microwave radiation, ultrasonic wave catalysis and desulfurizing agent adding, and meanwhile the bond energy of a C-C bond is protected, damage to the C-C bond in the desulfurizing process is reduced, and the rubber powder yield and quality are improved.

Description

technical field [0001] The invention relates to the technical field of normal temperature desulfurization of waste tire rubber powder, in particular to a normal temperature desulfurization method of waste tire rubber powder. Background technique [0002] In the prior art, the rubber powder prepared from waste tires is obtained by reacting it with a desulfurizer in a high-temperature environment, which not only makes the quality of the prepared rubber powder poor, but also leads to a low yield of the prepared rubber powder; The most important thing is that the energy consumption of rubber powder desulfurization is higher. [0003] Based on this, there are a large number of research literatures in the prior art. After waste tires are desulfurized in a low-temperature environment, they are prepared into rubber powder, or they are subjected to low-temperature desulfurization during the preparation of rubber powder, such as Patent No. 200510033281.1 uses a desulfurizer to desulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/26C08J11/16C08J11/28
CPCY02W30/62
Inventor 申建忠袁能汉
Owner 贵州华宇橡胶科技有限公司
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