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Method for preparing moulded coke with ball press technique

A technology of briquetting and coke, which is applied in the field of coke produced by briquetting technology, can solve problems such as restricting economic development, polluting the environment, wasting resources, etc., and achieve the effects of fully utilizing resources, purifying the environment, and protecting resources

Inactive Publication Date: 2013-04-10
任利华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The raw materials of carbon materials and metallurgical coke generally have low volume density, low strength, and large quality fluctuations. Especially in the process of production, storage, transportation, and use, a large amount of powder and dust are generated, which seriously pollutes the environment, causes waste of resources, and restricts the economy. develop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Production method of calcined petroleum coke for prebaked anode

[0064] (1), raw material selection: take the petroleum coke before calcining mainly as powder with 9.8% of volatile matter as raw material;

[0065] (2) Particle size control: Use a 5mm vibrating screen for screening, and the material on the sieve is sent to the jaw crusher for crushing, and the crushed raw materials enter the vibrating screen for sieving, forming a closed-circuit cycle of crushing and screening on the sieve. The underscreen material is sent to a hammer mill with a mesh size of 1 mm for crushing.

[0066] (3) Volatile content adjustment: take the pulverized raw material and put it into a 160°C hot mixer to heat it above 120°C, and continuously add medium-temperature coal tar pitch powder with a particle size of less than 2mm and a softening point of 68°C to the mixer, and mix evenly in a hot state , when the calcining shrinkage rate is the largest, after the detected volatile matter cont...

Embodiment 2

[0073] Metallurgical coke production method

[0074] (1) Raw material selection: choose metallurgical coke powder with a particle size less than 2mm produced during the production, transportation and use of metallurgical coke as raw material;

[0075] (2) Particle size control: Since the particle size of the raw material is smaller than the maximum particle size of the briquette raw material, the crushing and screening process is cancelled, and the next process is directly entered;

[0076] (3) Adjustment of volatile content: Put the raw material with qualified particle size into a 140°C hot mixer to heat it above 100°C, continuously add petroleum residue and asphalt mixture into the mixer, mix evenly in the hot state, and take the calcined shrinkage rate as the largest When the detected volatile content reaches 13%, the volatile content is adjusted;

[0077] (4) Determine the line pressure ratio and ball size of the briquetting machine: set the line pressure ratio of the bri...

Embodiment 3

[0083] Production method of graphitized carbon

[0084] (1) Raw material selection: select graphitized carbon product production return materials and recycled materials as raw materials;

[0085] (2) Particle size control: Due to the large amount of bulk material in the raw material, it is first crushed with a scrap crusher and a jaw crusher, and then sieved with a 5mm vibrating screen, and the sieved material is returned to the crusher to continue After crushing, it is sieved to form a closed cycle of crushing and sieving on the sieve. The undersize is sent to a hammer mill with a mesh size of 0.8 mm for crushing.

[0086] (3) Volatile content adjustment: take the pulverized raw material and put it into a 180°C hot mixer to heat it above 120°C, and continuously add medium-temperature coal tar pitch powder with a particle size of less than 1mm and a softening point of 82°C to the mixer, and mix evenly in a hot state , taking the maximum calcination shrinkage rate, after the ...

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PUM

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Abstract

The invention relates to a formed charred coal production method which adopts ball pressing process. The formed charred coal production method is characterized in that: one or a mixture of more than one of petrolatum coke with or without calcination pretreatment, pitch coke, electric calcined coal, metallurgical coke, natural graphite, artificial graphite and production return material and reclaimed materials of carbon products is adopted as a raw material; the process method for producing formed charred coal by ball pressing process of a ball pressing machine controls the maximum grain size of the raw material of between 5 mm and 0.01 mm during ball pressing according to the variety of the raw material and the size difference of volatile matters; the content of the volatile matters of the raw material is adjusted and controlled within the range of 7 percent to 20 percent; and the lowest line pressure ratio is controlled to be larger than 0.8 t / mm during the ball pressing by the ball pressing machine. The formed charred coal adopts a ball shape or an ellipsoid shape with unequal three-dimensional sizes, the volume density is larger than 1.3 g / cm<3>, the compression strength is larger than 20 Mpa, the porosity of the pressed parallel surfaces of the balls are lower than that of the pressed vertical surfaces, and the formed charred coal has graphitized anisotropy property. The invention has the advantages that the resources are protected and fully used, the environment is purified, and the high quality formed charred coal products can be produced.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a method for producing carbon materials and raw materials thereof, in particular to a method for producing coke with powdered coke as a raw material and adopting a briquetting process. Background technique [0002] The raw materials of carbon materials and metallurgical coke generally have low volume density, low strength, and large quality fluctuations. Especially in the process of production, storage, transportation, and use, a large amount of powder and dust are generated, which seriously pollutes the environment, causes waste of resources, and restricts the economy. develop. Taking the production of calcined petroleum coke as an example, when the particle size content of less than 3mm in the pre-calcined petroleum coke reaches more than 50%, the calcining loss of the rotary kiln exceeds 10%, and the volume density of the produced calcined petroleum coke is 1.0g / cm 3 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/06
Inventor 李纯任利华
Owner 任利华