Inorganic modified coal pitch and preparation method thereof

A technology of inorganic modification and coal tar pitch, applied in building components, building insulation materials, construction and other directions, can solve the problem of not fully satisfying the production of high-quality carbon electrode materials for aluminum, and achieve low cost, improved coking value, and increased volume. The effect of density
CN102051060BInactive Publication Date: 2012-04-25CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2012-04-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an inorganic modified coal pitch and a preparation method thereof. The preparation method of the inorganic modified coal pitch comprises the following steps of: 1, mixing: mixing 80-95 percent by mass of original coal pitch and 5-20 percent by mass of inorganic particles; and 2, modified heat treatment: putting the mixture obtained in the step 1 to a reaction vessel, heating the reaction vessel to the modified temperature of 150-300 DEG C, stirring and modifying for 1.0-6.0h to obtain the inorganic modified coal pitch. The TI, QI and Beta resin contents and the coking value of the inorganic modified coal pitch are all remarkably improved. The volume density, the compression strength, the bending strength, the oxidation resistance and the electrolysis expansiveness resistance performance of a carbon electrode for aluminium electrolysis and a TiB2 / C composite cathode material, which are prepared from the inorganic modified coal pitch, are remarkably improved.
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Description

technical field

[0001] The invention belongs to the technical field of aluminum electrolysis electrode materials, iron and steel industry electrode materials and other carbon materials, and relates to an inorganic modified coal tar pitch and a preparation method thereof. technical background

[0002] Coal tar pitch has the advantages of rich resources, low price, good fluidity, and easy graphitization, and is widely used as a carbon material product such as artificial graphite electrodes for industrial steelmaking, carbon anodes for aluminum, carbon cathodes, and carbon / carbon composite materials. binder. In the production process, the coal tar pitch binder is melted and mixed with the aggregate, and then the carbon material is made into a carbon material through molding-roasting or graphitization. The binder coal tar pitch used as a carbon material should have good cohesiveness, and at the same time, it should have a high coking value and compactness after carbonization, s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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