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Production process of high-density carbon product

A technology of carbon products and production process, which is applied in the chemical industry to achieve the effect of high output and low investment

Inactive Publication Date: 2010-06-09
任利华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially the petroleum coke raw material used in the largest amount in carbon products, the bulk density fluctuates between 0.9 and 1.2g / cm 3 In between, although the volume density of prebaked anodes for aluminum production is greater than 1.5g / cm with domestic calcined petroleum coke raw materials 3 , but significantly lower than the bulk density of international aluminum prebaked anodes 1.6g / cm 3 There is a certain gap with the international advanced level in terms of product quality, service life, energy saving, emission reduction, and consumption reduction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The production process of the high-density prebaked anode is: the prebaked anode is used to produce calcined petroleum coke and the 32×25×15mm elliptical volume density of 1.60g / cm is produced by using the petroleum coke calcined front coke. 3 High-density coke, prebaked anode butts, and prebaked anode waste products after roasting are four raw materials.

[0045] Calculated in parts by mass, particle grade ingredients+binder=100%.

[0046] Particle Grading:

[0047] 32×25×15mm oval-shaped high-density coke balls added 50%;

[0048] 5-0mm high-density coke crushing material 10%;

[0049] 1-0mm pre-baked anode butt, or pre-baked anode waste after baking, or high-density coke, one or more than one of the above-mentioned mixtures 11.5%;

[0050] Less than 0.09mm calcined petroleum coke powder 20%.

[0051] Binder selection, binder content control:

[0052] Choose coal tar pitch with a softening point of 92°C as the binder;

[0053] The amount of binder added is 8.5%....

Embodiment 2

[0057] The production process of high-density graphitized electrodes is: use calcined petroleum coke for graphitized electrode production; use 55% of the petroleum coke calcined front coke with 43% graphitized electrode production return material and graphitized electrode recycled material to produce 25×15 ×10mm elliptical volume density reaches 1.62g / cm 3 High-density coke; graphitized electrode forming waste billets; graphitized electrode roasted waste products, or graphitized electrode graphitized waste products, or graphitized electrode scraps, one of which or a mixture of more than one of the above-mentioned materials is used as a raw material.

[0058] Calculated in parts by mass, particle grade ingredients+binder=100%.

[0059] Particle Grading:

[0060] 25×15×10mm oval-shaped high-density coke balls added 35%;

[0061]5-0mm high-density coke crushing material 10%;

[0062] 15% of 1-0mm graphitized electrode forming waste blanks, 23% of binder coal tar pitch in graph...

Embodiment 3

[0071] The production process of high-density semi-graphite carbon paste and semi-graphite cathode paste for masonry carbon blocks is: use semi-graphite carbon paste to produce calcined petroleum coke; The volume density of the 25×15×10mm ellipse produced by chemical electrode production return material and graphitized electrode recovery material reaches 1.62g / cm 3 High-density coke; graphitized electrode forming waste blanks; graphitized electrode roasted waste products, or graphitized electrode graphitized waste products, or graphitized electrode scraps, one or more than one of the above mixtures are raw materials; when carbon products require ash When it is less than 8%, electric calcined coal is used instead of petroleum coke, or graphitized electrode roasting waste, or graphitized electrode graphitized waste, or graphitized electrode residue.

[0072] Calculated in parts by mass, particle grade ingredients+binder=100%.

[0073] Particle Grading:

[0074] 25×15×10mm oval...

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Abstract

The invention relates to a production process of a high-density carbon product, which is characterized in that the high-density carbon product comprises a high-density prebaked anode, or a high density graphitization electrode, or high-density semi graphitic carbon paste and semi graphitic cathode paste for building carbon blocks; by adopting high density carbon coke with the volume density being greater than 1.6g / cm3 as the main raw material and a large-grain high-density carbon coke whole ball adding mode, the addition amount of powder material and bonding agent coal tar is reduced, the grain structure of the carbon product is changed, and a carbon roasting product with the volume density being larger than 1.6g / cm3 is manufactured; and the production process thereof comprises the following steps of: selecting the raw material; grading the grain size, selecting the bonding agent and controlling the content of the bonding agent; mixing and kneading; shaping, roasting, dipping and graphitizing according to the conventional manufacturing method of the carbon product. By using the high-density carbon product produced by the protection process, the volume density of the carbon sizing product after being roasted is larger than 1.6 / cm3, thus realizing energy saving, emission reduction, high efficiency, low investment and high yield.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a production process of carbon materials and products thereof, in particular to a production process of high-density carbon products such as high-volume-density prebaked anodes, graphite electrodes, carbon blocks, and carbon pastes. Background technique [0002] Carbon products are products produced from petroleum coke, pitch coke, electric calcined coal, metallurgical coke and graphite through crushing, batching, kneading, molding, roasting, impregnation, graphitization and other processes. The carbon coke raw material has a honeycomb structure, and the bulk density is generally less than 1.3g / cm 3 14-27% coal tar pitch binder needs to be added in the process of kneading and forming, but the coking value of coal tar pitch is only about 50%, resulting in the bulk density of carbon products after roasting is generally lower than 1.6g / cm 3 . Especially the petroleum coke ...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 李纯任利华
Owner 任利华
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