Continuous production and apparatus for high-purity graphite carbon material

A technology of high-purity graphite and process method, which is applied in the field of coking industry, can solve the problems of low fixed carbon content, inability to meet production needs, and inability to meet needs, and achieve the effect of reducing environmental pollution

Active Publication Date: 2005-05-11
JIANGSU SURUN HIGH CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because these materials contain excessive amounts of harmful elements, especially impurities such as sulfur, nitrogen, and phosphorus, which seriously affect product quality and cannot meet production needs
At the same time, due to the low content of fixed carbon, the above-mentioned materials cannot be used as carbon negative electrode materials for a new generation of secondary lithium-ion batteries, friction materials for aircraft and high-speed trains, carbon-increasing materials for magnesia-carbon bricks, cathode carbon blocks for aluminum electrolytic cells, The need for nuclear reactor moderator materials and other carbon composites

Method used

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  • Continuous production and apparatus for high-purity graphite carbon material
  • Continuous production and apparatus for high-purity graphite carbon material
  • Continuous production and apparatus for high-purity graphite carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 High-temperature calcination continuous airtight production of high-purity graphite carbon material

[0028] The production capacity is 1500 tons / year, the annual production time is 250 days, and the feed rate is 0.25 tons / hour.

[0029] Specifications of raw materials Calcined petroleum coke (% by weight) has 3% water, 98.81% fixed carbon on dry basis, 0.50% ash, 0.69% volatile matter, and 0.57% sulfur (S).

[0030] The main equipment adopts vertical calcining electric furnace, and the relevant equipment is listed in the following table:

[0031] Serial number Equipment name Specifications Quantity

[0032] 1 belt conveyor B500 1 set

[0033] 2 jaw crusher PEX-250×1000 1 set

[0034] 3 bucket elevator D250 1 set

[0035] 4 silos 20M 3 1 set

[0036] 5 Electromagnetic vibration feeder CZ3.00 1 set

[0037] 6 Large inclination belt conveyor DDJ II type B400, H80 1 set

[0038] 7 Vertical Calciner Outer diameter×height φ2600×720...

Embodiment 2

[0054] Embodiment 2 High-temperature calcining continuous airtight production of high-purity graphite carbon material

[0055] The production capacity is 2100 tons / year, the annual production time is 250 days, and the feed rate is 0.35 tons / hour.

[0056] Specifications of raw materials Calcined petroleum coke (% by weight) contains 1.5% moisture, 98.78% fixed carbon on a dry basis, 0.53% ash, and 0.69% volatile matter; and 0.63% sulfur (S).

[0057] Main equipment and relevant equipment are the same as embodiment 1.

[0058] Process Control Parameters

[0059] 1. The crushing particle size of petroleum coke after calcining in the raw material system is controlled to be ≤55 mm, and the water content is controlled to be ≤1.5%;

[0060] 2. Calcination system Preheating temperature of vertical calcination electric furnace is 30-1800°C, preheating time is 2.1 hours, calcination temperature is about 2750°C, calcination time is 5.25 hours, cooling temperature is 230°C, cooling tim...

Embodiment 3

[0066] Embodiment 3 High-temperature calcination continuous airtight production of high-purity graphite carbon material

[0067] The production capacity is 2400 tons / year, the annual production time is 250 days, and the feed rate is 0.4 tons / hour.

[0068] Raw Material Specification Calcined petroleum coke (% by weight) moisture 3.2%, fixed carbon 98.75% on a dry basis, ash 0.56%, volatile matter 0.69%, and sulfur (S) 0.69%.

[0069] Main equipment and relevant equipment are the same as embodiment 1.

[0070] Process Control Parameters

[0071] 1. The crushing particle size of petroleum coke after calcining in the raw material system is controlled to be ≤55 mm, and the water content is controlled to be ≤3.2%;

[0072] 2. Calcination system Preheating temperature of vertical calcination electric furnace is 30-1800°C, preheating time is 1.84 hours, calcination temperature is about 2710°C, calcination time is 4.6 hours, cooling temperature is 245°C, cooling time is 2.15 hours, ...

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Abstract

A production of high-purity graphitic carbon material and its apparatus are disclosed. The process involves raw material system, roasting system and post-treating system: 1) breaking forged petroleum coke by raw material system with grain size up to 0-60 mm and controlling water content <=5%; 2) delivering the treated material into vertical roasting electric furnace and high-temperature treating, preheating, purifying and graphitizing under high-temperature, controlling temperature at 1800-3000deg.C, cooling and discharging at 50-250deg.C with 6-21 hrs; and 3) breaking and screening discharged material by post-treating system with grain size up to 0-50 mm, classifying and packing. The vertical roasting electric furnace consists of upper and lower electrode, supporting frame, material disc, the third cooling section, electrode cooling cover, furnace core carbon fireproof material, furnace casing, furnace lid , smoke conduit, and bucket.

Description

technical field [0001] The invention relates to the coking industry, in particular to a production process and equipment for producing high-purity graphite carbon material (high-purity graphite carbon material is also called graphitized coke) using calcined petroleum coke as raw material. Background technique [0002] In the steelmaking and foundry industries, electric calcined anthracite, natural graphite, calcined petroleum coke, and pitch coke are generally used as recarburization materials in China. Because these materials contain excess harmful elements, especially impurities such as sulfur, nitrogen, and phosphorus, which seriously affect product quality and cannot meet production needs. At the same time, due to the low content of fixed carbon, the above-mentioned materials cannot be used as carbon negative electrode materials for a new generation of secondary lithium-ion batteries, friction materials for aircraft and high-speed trains, carbon-i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04F27D1/00F27D1/12F27D9/00
Inventor 万红根成朱葛秋林陈荣张小荣
Owner JIANGSU SURUN HIGH CARBON
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