Method for preparing pigment carbon black from waste and abandoned tires

A technology for pigmented carbon black and waste tires, which is applied in the direction of fibrous fillers, etc., can solve the problems of reduced oxygen content on the surface of carbon black, tires cannot be fully utilized, and high processing costs, so as to increase adsorption performance, realize full utilization, and reduce waste. The effect of production costs

Inactive Publication Date: 2018-08-10
雷春生
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that waste tires cannot be fully utilized at present, resulting in waste of resources and high processing costs. At the same time, in the current process of preparing pigment carbon black, due to the existence of high temperature, the oxygen content on the surface of carbon black is likely to decrease. The problem

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  • Method for preparing pigment carbon black from waste and abandoned tires

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preparation example Construction

[0020] A kind of method utilizing discarded tire to prepare pigment carbon black, this preparation method comprises the steps:

[0021] (1) Wash the waste tires, crush them, pass through a 200-mesh sieve, collect the sieved particles, put the sieved particles and additives into a ball mill at 300r / min for 20-30min at a mass ratio of 7:1-3 , then add acetone with a sieved particle mass of 15-20%, ball mill at 400r / min for 45-50min, and collect the ball-milled product;

[0022] (2) Put the ball mill into the reactor, use carbon dioxide to discharge the gas in the reactor, heat up to 756-763°C for pyrolysis for 4-7 hours, then cool down to room temperature, collect the pyrolysis mixture, and dispose of the pyrolysis mixture Place it at 10-15°C for 40 minutes;

[0023] (3) After standing still, ultrasonically oscillate the pyrolysis mixture after standing with sodium hydroxide solution at a mass ratio of 1:4, put it into a container, use nitrogen protection, and then add sodium h...

example 1

[0028] Preparation of additives: Mix sodium carbonate and ferric sulfate at a mass ratio of 4:3.

[0029] Preparation of additives: Mix nitrobenzene and boric acid at a mass ratio of 7:1.

[0030] A kind of method utilizing discarded tire to prepare pigment carbon black, this preparation method comprises the steps:

[0031] (1) Wash the waste tires, crush them, pass through a 200-mesh sieve, collect the sieved particles, put the sieved particles and additives into a ball mill at 300r / min for 30min at a mass ratio of 7:3, and then add over Sieve acetone with 20% particle mass, ball mill at 400r / min for 50min, and collect the ball mill;

[0032] (2) Put the ball mill into the reactor, use carbon dioxide to discharge the gas in the reactor, heat up to 763°C for pyrolysis for 7 hours, then cool down to room temperature, collect the pyrolysis mixture, and place the pyrolysis mixture at 15°C Stand still for 40min;

[0033] (3) After standing still, ultrasonically oscillate the py...

example 2

[0038] Preparation of additives: Mix sodium carbonate and ferric sulfate at a mass ratio of 4:2.

[0039] Preparation of additives: Mix nitrobenzene and boric acid at a mass ratio of 7:1.

[0040] A kind of method utilizing discarded tire to prepare pigment carbon black, this preparation method comprises the steps:

[0041] (1) Wash the waste tires, crush them, pass through a 200-mesh sieve, collect the sieved particles, put the sieved particles and additives into a ball mill at 300r / min for 25 minutes at a mass ratio of 7:2, and then add over Sieve acetone with a particle mass of 18%, ball mill at 400r / min for 48min, and collect the ball mill;

[0042](2) Put the ball mill into the reactor, use carbon dioxide to discharge the gas in the reactor, heat up to 760°C for pyrolysis for 5 hours, then cool down to room temperature, collect the pyrolysis mixture, and place the pyrolysis mixture at 13°C Stand still for 40min;

[0043] (3) After standing still, ultrasonically oscilla...

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Abstract

The invention relates to a method for preparing pigment carbon black from waste and abandoned tires, and belongs to the technical field of waste reutilization. The waste and abandoned tires are used as raw materials to be subjected to mixed ball milling and pyrolysis with auxiliary agents; then, obtained materials are mixed with a sodium hydroxide solution and glacial acetic acid; next, mixed reaction is performed with dimethylformamide, tyrosine and the like; finally, low-temperature oxidization is performed, so that the pigment carbon black is prepared. The method has the advantages that thewaste and abandoned tires are sufficiently utilized; the environment pollution and the resource waste are avoided; the problem of reduction of oxygen content on the surface of the carbon black duringthe high-temperature oxidization on the carbon black is also solved, so that the oxidization can be performed at low temperature.

Description

technical field [0001] The invention relates to a method for preparing pigment carbon black by using waste tires, and belongs to the technical field of waste recycling. Background technique [0002] In the prior art, with the rapid development of the automobile industry, the number of automobiles increases sharply, which leads to an increase in the amount of discarded tires. According to relevant reports, waste tires are generally abandoned after being retreaded twice, so that a large number of waste tires are accumulated. Obviously, if the waste tires are not effectively recycled, it will not only cause a great waste of rubber resources, but also put great pressure on environmental protection. In the natural environment, waste tires can pollute the environment for decades . Therefore, the research on recycling technology of waste tires has been paid more and more attention by governments all over the world. How to develop new technologies for rubber recycling of waste tir...

Claims

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Application Information

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IPC IPC(8): C09C1/48
CPCC09C1/482
Inventor 雷春生施衍
Owner 雷春生
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