Method for baking fine-particle-structure graphite product with open ring type furnace and graphite product obtained by method

A technology of graphite products and fine particles is applied in the field of graphite material manufacturing and processing, which can solve the problems of low yield and easy cracking, and achieve the effects of saving roasting cost, improving thermal energy utilization rate and high bulk density.

Active Publication Date: 2016-06-29
DATONG XINCHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that fine-grain structure graphite products are easily cracked by using an open-ring type roasting furnace, the present invention provides a method for roasting fine-grain structure graphite products in an open-ring type furnace and the obtained graphite products, using the roasting method of the present invention can not only improve the yield but also ensure that the product has a high volume density

Method used

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  • Method for baking fine-particle-structure graphite product with open ring type furnace and graphite product obtained by method
  • Method for baking fine-particle-structure graphite product with open ring type furnace and graphite product obtained by method
  • Method for baking fine-particle-structure graphite product with open ring type furnace and graphite product obtained by method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Round carbon products with a specification of φ550mm are roasted for the first time in an open-ring roasting furnace. The steps are as follows:

[0022] 1) Furnace installation:

[0023] Furnace products: round carbon products with a specification of φ550mm.

[0024] Filler: A filler whose mass ratio is metallurgical coke: quartz sand=5.5:4.5.

[0025] Furnace loading operation: The furnace is loaded according to the conventional furnace loading operation. (For conventional furnace loading operations, please refer to "Carbon Technology", Metallurgical Industry Press, 2012 edition, edited by Jiang Wenzhong)

[0026] The specifications of quartz sand in the filler are not particularly limited. The particle size range of metallurgical coke and their respective proportions are shown in the following table:

[0027]

[0028] 2) Start the heating program and set the heating curve of the heating process as follows: at 150-350℃, the heating rate is 1.5℃ / h; at 350-600℃, the heating rate i...

Embodiment 2

[0032] A round carbon product with a specification of φ1100mm is roasted for the first time in an open ring roasting furnace. The steps are as follows:

[0033] 1) Furnace installation:

[0034] Furnace products: round carbon products with a specification of φ1100mm.

[0035] Filler: A filler whose mass ratio is metallurgical coke: quartz sand=7.5:2.5.

[0036] Furnace loading operation: The furnace is loaded according to the conventional furnace loading operation. (For conventional furnace loading operations, please refer to "Carbon Technology", Metallurgical Industry Press, 2012 edition, edited by Jiang Wenzhong)

[0037] The particle size range of metallurgical coke and quartz sand in the filler and their respective proportions are shown in the following table:

[0038]

[0039] 2) Start the heating program and set the heating curve of the heating process as follows: at 150-350℃, the heating rate is 1.2℃ / h; at 350-600℃, the heating rate is 0.7℃ / h; at 600-750℃ When the temperature ri...

Embodiment 3

[0043] The carbon block product with a size of 450mm×550mm is roasted for the first time in an open ring roasting furnace. The steps are as follows:

[0044] 1) Furnace installation:

[0045] Furnace products: square products with a size of 450mm×550mm.

[0046] Filler: mass ratio is a mixture of metallurgical coke: quartz sand=7:3.

[0047] Furnace loading operation: Place the first roasted raw carbon block in the lower layer of the furnace, and place the second or multiple roasted carbon blocks on the upper layer, and ensure that the distance between the carbon products is maintained at about 50mm. Finally, the impregnated product is loaded to protect the production exhaust.

[0048] The particle size range of metallurgical coke and quartz sand in the filler and their respective proportions are shown in the following table:

[0049]

[0050] 2) Start the heating program, and set the heating curve of the heating process as follows: at 150-350℃, the heating rate is 1.5℃ / h; at 350-600℃, ...

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Abstract

The invention discloses a method for roasting fine particle structure graphite products in an open ring furnace and graphite products obtained by the method, belonging to the field of graphite material manufacturing and processing. The method comprises the steps of: furnace loading, temperature rise, cooling, and furnace discharge, wherein the firing curve of the temperature rise step is controlled as follows: at 150-350°C, the heating rate is 1.2-1.5°C / h; at 350-600°C, The heating rate is 0.6-0.8°C / h; at 600-750°C, the heating rate is 0.8-1.0°C / h; at 750-1050°C, the heating rate is 2.1-2.3°C / h. The method of the invention satisfies the requirement of calcining graphite products with fine particle structure, and the prepared graphite products have high bulk density and high yield.

Description

Technical field [0001] The invention belongs to the field of graphite material manufacturing and processing, and particularly relates to a method for roasting a graphite product with a fine particle structure in an open ring furnace and a graphite product obtained by the method. Background technique [0002] In the existing graphite production process, the first roasting of carbonaceous raw materials after forming is a very important process. The specific process is to place carbonaceous blocks made of formed carbonaceous raw materials in an underground roasting tunnel, and carry out 1200-1500℃ High temperature roasting. The purpose of roasting is to carbonize the binder medium temperature pitch, form a coke grid between the aggregate particles, and firmly bond the aggregates of different sizes into a whole. As an important furnace for the roasting process, the open ring roaster has the advantages of large production and processing products, energy saving, and high efficiency. H...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 祁进君张培林赤九林张培模纪永良刘伟凯
Owner DATONG XINCHENG NEW MATERIAL CO LTD
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