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A kind of preparation method and graphite product of mold compression molding graphite product

A graphite product and mold pressing technology, applied in the field of mold pressing and forming graphite product preparation, can solve the problems of slow molding method, long processing time, high cost of manpower and material resources, and achieve the improvement of various performance indicators, low porosity, The effect of improving production efficiency

Active Publication Date: 2020-07-24
DATONG XINCHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the excellent performance of graphite products, the molding method in the current preparation method of graphite products is relatively slow, and many times of impregnation and roasting are required in the processing process, so not only the processing time is long, but also the cost of manpower and material resources is high.

Method used

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  • A kind of preparation method and graphite product of mold compression molding graphite product
  • A kind of preparation method and graphite product of mold compression molding graphite product
  • A kind of preparation method and graphite product of mold compression molding graphite product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Crushing, sieving, and batching: crush the calcined petroleum coke, and sieve it into specifications of 0.5mm<particle size≤0.8mm, 0.335mm<particle size≤0.5mm, 0.075mm<particle size≤0.335mm and Four kinds of fine powder particles <0.075mm; crush and sieve the pitch coke to obtain particles with a specification of 0.335mm<particle size≤0.5mm; then take 75 parts by weight of calcined coke, 20 parts by weight of pitch coke, and the specification is 0.075mm< 5 parts by weight of needle coke with a particle diameter of ≤0.335 mm are used for batching.

[0045] Among the above 75 parts by weight of calcined coke: calcined coke with 0.5mm<particle size≤0.8mm accounts for 2% of the total weight of calcined coke, and calcined coke with 0.335mm<particle size≤0.5mm accounts for 40% of the total weight of calcined coke Calcined coke with a particle diameter of 0.075mm<0.335mm accounts for 31% of the total calcined coke weight, and calcined coke with a particle diameter<0.075mm ...

Embodiment 2

[0057] (1) Crushing, sieving, and batching: crush the calcined petroleum coke, and sieve it into specifications of 0.5mm<particle size≤0.8mm, 0.335mm<particle size≤0.5mm, 0.075mm<particle size≤0.335mm and Four kinds of fine powder particles <0.075mm; crush and sieve the pitch coke to obtain particles with a specification of 0.335mm<particle size≤0.5mm; then take 77 parts by weight of calcined coke, 15 parts by weight of pitch coke, and the specification is 0.075mm< 8 parts by weight of needle coke with a particle diameter of ≤0.335 mm are used for batching.

[0058] Wherein, among the above-mentioned 77 parts by weight of calcined coke: calcined coke with 0.5mm

Embodiment 3

[0070] (1) Crushing, sieving, and batching: crush the calcined petroleum coke, and sieve it into specifications of 0.5mm<particle size≤0.8mm, 0.335mm<particle size≤0.5mm, 0.075mm<particle size≤0.335mm and Four kinds of fine powder particles <0.075mm; crush and sieve the pitch coke to obtain particles with a specification of 0.335mm<particle size≤0.5mm; then take 76 parts by weight of calcined coke, 19 parts by weight of pitch coke, and the specification is 0.075mm< 7 parts by weight of needle coke with a particle diameter of ≤0.335 mm are used for batching.

[0071] Wherein, among the above-mentioned 76 parts by weight of calcined coke: calcined coke with 0.5mm

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Abstract

The invention discloses a method for preparing a graphite product through mould compression moulding and the graphite product. The preparation method includes steps of crushing, screening, compounding, dry mixing, mixing kneading, forming, primary calcining, impregnating, secondary calcining and graphitizing to obtain the finished product. An aggregate in the compounding step is formed by calcinedcoke, pitch coke and needle coke in a weight ratio of (75-77):(15-20):(5-8). By adjustment of a formula and forming conditions, high forming efficiency and high product manufacturing speed are realized, energy consumption in a production process can be substantially saved, and cost reduction and economic benefit increasing are realized.

Description

technical field [0001] The invention belongs to the field of graphite materials, and in particular relates to a method for preparing graphite products molded by mold pressing and the graphite products. Background technique [0002] Graphite is metamorphic carbonaceous matter of organic origin, most commonly found in marble, schist, or gneiss. Coal seams can partially form graphite through thermal metamorphism, and a small amount of graphite is the primary mineral of igneous rocks. Graphite products maintain the original chemical properties of flake graphite and have strong self-lubricating properties. Due to its special structure, graphite products have many characteristics such as high temperature resistance, corrosion resistance, oxidation resistance, high density, high tensile and bending strength, so graphite products have been widely used in metallurgy, chemical industry, petrochemical industry, high energy physics, aerospace, etc. , electronics and so on. [0003] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/52C04B35/634C04B35/64B28B3/02
CPCB28B3/02C04B35/522C04B35/63496C04B35/64C04B2235/5427C04B2235/5436C04B2235/602C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607
Inventor 狄志宇张培模庞中海刘伟凯孙喜贵张玉芬
Owner DATONG XINCHENG NEW MATERIAL CO LTD
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