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Large-size medium-grained graphite material and production process thereof

A technology of graphite material and production process, which is applied in the field of large-scale medium and coarse-grained graphite material and its production process, can solve the problems of large pores, high production cost and low efficiency, and achieve the effect of uniform structure and large size

Inactive Publication Date: 2010-04-07
XINGHE XINGYONG CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing graphite materials have small and large particles. For large graphite materials, they can only be assembled. The installation is inconvenient, the efficiency is low, the consumption is high during production, and due to large pores and serious leakage, production high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Large-size, medium- and coarse-grained graphite materials, including dry materials and binders that have been crushed, batched, kneaded, cooled, pressed, roasted, impregnated, re-baked or re-impregnated and re-baked Process and graphitization process.

[0024] (1) Dry material is mixed with binder, cool material, and pressed into shape:

[0025] ① Preparation of calcined petroleum coke dry material: the calcined petroleum coke with different particle sizes after crushing is used to prepare calcined petroleum coke dry material: in weight percentage: the calcined petroleum coke with a particle size of 1.0-0.5 mm is 27%; The calcined petroleum coke with a particle size of 0.5-0.15mm is 40%; the calcined petroleum coke with a particle size of 0.15mm or less is 33%;

[0026] ②Kneading the dry material and the binder: dry the prepared dry material in the kneading pot for 25 minutes, the temperature reaches 110 ℃, add the binder at 165 ℃ and knead for 65 minutes, of which...

Embodiment 2

[0035] Example 2: Large-size medium and coarse-grained graphite materials, including dry materials and binders through smashing, batching, kneading, cooling materials, compression molding, roasting process, impregnation process, re-roasting process or re-impregnation process and re-roasting process And graphitization process.

[0036] (1) Dry material is mixed with binder, cool material, and pressed into shape:

[0037] ①Preparation of calcined petroleum coke dry material: take calcined petroleum coke with different particle sizes after crushing to prepare calcined petroleum coke dry material: weight percentage: the calcined petroleum coke with a particle size of 1.0-0.5mm is 20%; The calcined petroleum coke with a particle size of 0.5-0.15mm is 35%; the calcined petroleum coke with a particle size of 0.15mm or less is 45%;

[0038] ②Kneading the dry material and the binder: dry mix the dry material prepared in ① in the kneading pot for 30 minutes, the temperature reaches 112°C, add...

Embodiment 3

[0045] Example 3: Large-size, medium- and coarse-grained graphite materials, including dry materials and binders that have been crushed, batched, kneaded, cooled, pressed, roasted, impregnated, re-baked or re-impregnated and re-baked Process and graphitization process.

[0046] (1) Dry material is mixed with binder, cool material, and pressed into shape:

[0047] ① Preparation of calcined petroleum coke dry material: the calcined petroleum coke with different particle sizes after crushing is used to prepare calcined petroleum coke dry material: in weight percentage: the calcined petroleum coke with a particle size of 1.0-0.5mm is 40%; The calcined petroleum coke with a particle size of 0.5-0.15mm is 35%; the calcined petroleum coke with a particle size of 0.15mm or less is 25%;

[0048] ②Kneading the dry material and the binder: Dry the prepared dry material in the kneading pot for 35 minutes, the temperature reaches 120℃, and the binder at 135℃ is added and kneaded for 45 minutes. ...

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Abstract

The invention discloses a large-size medium grain graphite material and a production process thereof. The production process comprises the following steps: smashing a raw material; adding an adhesive when the ingredient and the adhesive are subjected to dry-mixing to a certain temperature; and carrying out processes of kneading, cooling, moulding, roasting, impregnating, re-roasting or re-impregnating, re-roasting and graphitizing to prepare the large-size medium grain graphite material. The large-size medium grain graphite material has the advantage that: the graphite material produced by the production process has large size, uniform structure and small pore and is suitable for a large casting die, polysilicon smelting, large blast furnace brickwork and a chemical smelting launder, solves the problems of low efficiency and high production cost caused by small size and multi-block assembling, and also solves the problems of big pore and high permeability caused by coarse grain.

Description

Technical field: [0001] The invention relates to a graphite material and its production process, in particular to large-scale medium and coarse-grained graphite materials for large-scale casting molds, polysilicon smelting, large-scale blast furnace masonry, chemical smelting launders, heat exchangers, and production processes thereof. technical background: [0002] The existing graphite materials have small specifications and large particles. For large graphite materials, they can only be assembled. The installation is inconvenient, the efficiency is low, the consumption is high during production, and the production is caused by large pores and serious leakage. high cost. Summary of the invention [0003] The purpose of the present invention is to provide graphite materials suitable for processing large casting molds, polysilicon smelting, large blast furnace masonry, chemical smelting launders, heat exchangers, etc., without multiple pieces of assembly, convenient use, high work...

Claims

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Application Information

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IPC IPC(8): C04B35/532C04B35/622C01B31/04
Inventor 靳登永南效凯孙慧任泽军张成靳永义张佃宏赵龙张兴刘志敏薛向东杨清河高军
Owner XINGHE XINGYONG CARBON CO LTD
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