Method and device for calcinating needle coke with rotary kiln

A rotary kiln and needle coke technology, which is applied in carbon preparation/purification, sustainable manufacturing/processing, chemical industry, etc., can solve the problems of low content of coarse particles, affecting the quality of large-sized electrodes, etc., and improve the content of coarse particles. , the effect of strengthening the calcination effect and improving the actual yield

Inactive Publication Date: 2012-10-24
GUIYANG AL-MG DESIGN & RES INST
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Problems solved by technology

However, the disadvantage of calcining needle coke in a rotary bed calciner is that the raw coke entering the calciner is subject to severe thermal shock, which makes the content of coarse particles in the production of large-scale electrodes very low, resulting in very brittle coke after calcining, which affects the quality of large-scale electrodes. quality

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  • Method and device for calcinating needle coke with rotary kiln

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Embodiment Construction

[0019] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0020] Example of the present invention: The principle of the method for calcining needle coke in a rotary kiln of the present invention is as follows figure 1 As shown, the method uses a rotary kiln to calcinate needle coke, which can avoid the severe thermal shock that occurs when the green coke enters the existing rotary bed calciner, and greatly reduces the brittleness of the calcined coke, thereby enabling modern large-scale The content of coarse particles in electrode production has increased. The rotary kiln is provided with a preheating section, a drying section and a combustion section in sequence from the feed port to the discharge port; it is beneficial to increase the calcination temperature and easier to control the heating rate of the materials in the kiln. The feed inlet of the rotary kiln adopts a variable diameter structure, which reduces the...

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Abstract

The invention discloses a method and device for calcinating needle coke with a rotary kiln. The method makes use of a rotary kiln to calcinate needle coke, so that a violent thermal shock generated during green coke's entrance into existing rotary hearth calciners can be avoided, and the calcinated coke has greatly reduced brittleness, thus enhancing the content of coarse particles in modern large-specification electrode production. The device comprises a rotary kiln (1), the feed inlet of which is provided with a feeding device and an ash settling chamber. The discharge port of the rotary kiln is in connection with the feed inlet of a cooling machine (3) adopting dual cooling through an electric elephant trunk (2). The cooling machine is connected to a waste gas treatment system (4). The rotary kiln is driven to rotate by a variable frequency motor (5). The discharge port of the rotary kiln is provided with a double-frequency conversion blower (6). By employing the method and the device of the invention, the quality of calcinated coke can be improved, the investment can be reduced, the running rate can be high, automatic control is easy to realize, and the labor intensity of workers can be lowered.

Description

technical field [0001] The invention relates to a method and device for calcining needle coke with a rotary kiln, belonging to a method and device for calcining needle coke as a raw material in graphite electrode production. Background technique [0002] With the continuous development of the electrode industry and other carbon industries, the specifications of the electrodes are constantly increasing, and the quality requirements are getting higher and higher, and the quality requirements for the raw material needle coke are also getting higher and higher. As an important part of calcination in the production of electrode raw material needle coke, the mainstream calcination equipment currently used in this industry at home and abroad is the rotary bed type calcination furnace. Great improvement, low energy consumption, high yield of fixed carbon, and small dust emission. However, the disadvantage of calcining needle coke in a rotary bed calciner is that the raw coke enteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01B32/05
CPCY02P20/10
Inventor 程尚清
Owner GUIYANG AL-MG DESIGN & RES INST
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