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Method for transforming waste asphalt residues into asphalt coke finished product

A technology for waste asphalt and asphalt coke, applied in the field of waste asphalt slag recycling and reuse, can solve problems such as enterprise loss, environmental pollution, and ineffective utilization of waste asphalt slag, and achieve the effects of improving utilization rate, improving mechanical strength, and easy sintering

Active Publication Date: 2018-07-27
DATONG XINCHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a method for converting waste asphalt slag into finished pitch coke, so as to solve the problem that the waste asphalt slag produced by tunnel kilns cannot be effectively utilized in the field of graphite processing , thus polluting the environment and causing losses to the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Collect the waste asphalt slag produced by the tunnel kiln, and do not mix with other impurities;

[0045] 2) Clean up the collected waste asphalt slag, mainly to clean up the excess ash and impurities on the surface of the waste asphalt slag;

[0046] 3) Crushing the cleaned waste asphalt slag. The ground of the crushing workshop needs to be flat, and a smooth steel plate is laid on the ground to prevent ash and other impurities from being brought in, and the crushed waste asphalt slag particles and powder are obtained;

[0047] 4) Put the crushed waste asphalt slag particles and powder into the sagger, and send it to the electric furnace for roasting;

[0048] 5) After the roasting is completed, the sagger is taken out from the electric furnace, and the temperature is lowered to obtain the usable finished pitch coke.

Embodiment 2

[0050]1) Collect the waste asphalt slag produced by the tunnel kiln, and do not mix with other impurities;

[0051] 2) Clean up the collected waste asphalt slag, mainly to clean up the excess ash and impurities on the surface of the waste asphalt slag;

[0052] 3) Crushing the cleaned waste asphalt slag. The ground of the crushing workshop needs to be flat, and a smooth steel plate is laid on the ground to prevent ash and other impurities from being brought in, and the crushed waste asphalt slag particles and powder are obtained;

[0053] 4) Put the crushed waste asphalt slag particles and powder into a sagger, and send them to the electric furnace for roasting according to the established roasting curve; the roasting curve is:

[0054] The first stage: 0-400 ℃ free heating

[0055] The second stage: 400-950 ℃ temperature rise 55 ℃ per hour

[0056] The third stage: 950-1100 ℃ temperature rise 75 ℃ per hour

[0057] The fourth stage: 1100 ℃ constant temperature for 100 hour...

Embodiment 3

[0061] 1) Collect the waste asphalt slag produced by the tunnel kiln, and do not mix with other impurities;

[0062] 2) Clean up the collected waste asphalt slag, mainly to clean up the excess ash and impurities on the surface of the waste asphalt slag;

[0063] 3) Crushing the cleaned waste asphalt slag. The ground of the crushing workshop needs to be flat, and a smooth steel plate is laid on the ground to prevent ash and other impurities from being brought in, and the crushed waste asphalt slag particles and powder are obtained;

[0064] 4) Put the crushed waste asphalt slag particles and powder into a sagger, and send them to the electric furnace for roasting according to the established roasting curve; the roasting curve is:

[0065] The first stage: 0-400 ℃ free heating

[0066] The second stage: 400-950 ℃ temperature rise 55 ℃ per hour

[0067] The third stage: 950-1100 ℃ temperature rise 75 ℃ per hour

[0068] The fourth stage: 1100 ℃ constant temperature for 100 hou...

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Abstract

The invention belongs to the technical fields of recycling and reutilization of waste asphalt residues, and specifically relates to a method for transforming the waste asphalt residues into an asphaltcoke finished product. The method comprises the following steps: 1) collecting the waste asphalt residues produced from a tunnel kiln; 2) cleaning collected waste asphalt residues; 3) crushing the cleaned waste asphalt residues so as to obtain crushed waste asphalt residue particles and powder; 4) filling the crushed waste asphalt residue particles and powder into a sagger, sending the sagger into an electric furnace, and carrying out calcination; and 5) after completion of calcination, taking the sagger out of the electric furnace, and carrying out cooling so as to obtain an available asphalt coke finished product. The asphalt coke finished product obtained by adopting the method provided by the invention conforms to national standards through detection and has the value of reutilization, so problems like incapability of effective utilization, pollution to the environment and loss to enterprises for the waste asphalt residues produced from the tunnel kiln in the field of graphite processing are solved; the utilization rate of the waste asphalt residues is greatly improved; and certain social values are created.

Description

technical field [0001] The invention belongs to the technical field of recovery and reuse of waste asphalt slag, and in particular relates to a method for converting waste asphalt slag into finished asphalt coke. Background technique [0002] Tunnel kiln is used for secondary or multiple roasting of graphite products impregnated with coal tar pitch. Put the impregnated graphite product in the kiln car, push the kiln car into the tunnel kiln, and go through the pre-heating zone (200-280°C), roasting zone (280-760°C), pre-cooling zone (760-400°C) , the main cold zone (400-200°C) (the temperature here refers to the internal temperature of the tunnel kiln, the actual temperature of the graphite impregnated product is slightly lower than the temperature in the kiln by 100-150°C) and other links to impregnate the coal tar pitch inside the graphite product for coking, Carbonization, so that the excess pitch is discharged to the oil pan of the kiln car, thereby obtaining secondary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01B32/205
Inventor 张培模张培林刘伟凯张作文赵海祥王振国
Owner DATONG XINCHENG NEW MATERIAL CO LTD
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