Method for improving formed coke consolidation strength

A technology of consolidation strength and high strength, applied in solid fuel, petroleum industry, fuel, etc., can solve the problem of low strength of asphalt binder-type coke products, achieve increased strength, enhanced bridge chain effect, and enhanced carbonization and consolidation effect Effect

Active Publication Date: 2012-08-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of low strength of pitch binder coke products, th...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: The compressive strength of the carbonized coke obtained according to the process of Comparative Example 1 was 16.9 MPa by using superfine coke powder with an average particle size of 30.0 μm instead of fine coke powder with an average particle size of 500.0 μm.

Embodiment 2

[0013] Example 2: The compressive strength of the carbonized coke obtained according to the process of Comparative Example 1 was 19.3 MPa by using superfine coke powder with an average particle size of 8.6 μm instead of fine coke powder with an average particle size of 500.0 μm.

Embodiment 3

[0014] Example 3: The compressive strength of the carbonized coke obtained according to the process of Comparative Example 1 was 18.1 MPa by using superfine coke powder with an average particle size of 4.5 μm instead of fine coke powder with an average particle size of 500.0 μm.

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Abstract

The invention discloses a method for improving formed coke consolidation strength. Superfine grinding fillers (the superfine grinding fillers are coke powder or anthracite, and the average particle size of the fillers is less than 30.0 micrometers) are mixed with pitch, and then evenly mixed with the coke powder to obtain a mixture, the obtained mixture is added with water for wetting and then fully and evenly mixed again, and is subjected to pressing and forming process as well as volatilization and carbonization treatment at normal temperature to obtain carbonized formed coke, wherein the compression strength can be up to above 19.0 MPa. According to the method disclosed by the invention, the superfine grinding fillers are added into the pitch, enables the superfine grinding fillers to be embedded in a skeleton structure formed by carbonized pitch so as to fill pores created in coal tar pitch heat treatment, enrich the carbonized skeleton and enhance a bridge chain effect among coke powder particles and further improve the formed coke strength. According to the method, only a procedure of superfine grinding filler preparation needs to be added in the method, so that the effect of obvious improvement of the formed coke strength can be reached by performing the process in the conventional formed coke production process.

Description

technical field [0001] The invention belongs to the technical field of coke powder molding, and relates to a technology and method for preparing coke with asphalt as a binder, in particular to a coke preparation technology for adding superfine grinding fillers to asphalt as skeleton fillers to improve the consolidation strength of asphalt binders and methods. Background technique [0002] Coke is the main fuel in chemical industry, metallurgy, calcium carbide and other industries. It is required to have a certain lumpiness when used, but coke powder is inevitably produced during coke transportation or crushing. Coke powder is used as cheap ordinary fuel or even discarded because of its small particle size (generally below 10mm) and does not meet the requirements of the production process. At present, coke users lack effective recycling technology for it. A large amount of coke powder is processed cheaply, which not only causes a huge waste of coke resources, but also the op...

Claims

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Application Information

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IPC IPC(8): C10L5/16
Inventor 杨永斌姜涛李骞钟强郭宇峰李光辉范晓慧黄柱成白国华郑琼香陈丽娟
Owner CENT SOUTH UNIV
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