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A fluidized fluidized furnace for one-step roasting of stone coal

A boiling furnace and roasting technology, which is applied in the field of boiling furnaces, can solve the problems of complex processing process, low yield of roasting material, low energy utilization rate, etc., and achieves the effects of simple operation, high roasting efficiency and high energy utilization rate.

Active Publication Date: 2018-05-11
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can obtain a yield of more than 80% of the roasted material, the implementation process is relatively complicated. Before the stone coal is put into the furnace, operations such as classification and granulation are required.
[0004] To sum up, the existing stone coal roasting methods still have problems such as poor adaptability of raw materials, complicated treatment process, low yield of roasted materials, low roasting efficiency and low energy utilization rate.

Method used

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  • A fluidized fluidized furnace for one-step roasting of stone coal
  • A fluidized fluidized furnace for one-step roasting of stone coal
  • A fluidized fluidized furnace for one-step roasting of stone coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A fluidized fluidized furnace used for one-step roasting of stone coal. Such as figure 1 and image 3 As shown, a first fluidized bed 1, a second fluidized bed 2 and a third fluidized bed 14 are arranged in sequence from left to right near the bottom of the furnace body 10, and the first fluidized bed 1 and the second fluidized bed 2 Separated by the first fire wall 11, the second fluidized bed 2 and the third fluidized bed 14 are separated by the second fire wall 12; as figure 1 As shown, the first air chamber 17 and the second air chamber 16 are separated by the first fire-retaining wall 11 , and the second air chamber 16 and the third air chamber 15 are separated by the second fire-retaining wall 12 . Such as figure 1 and image 3 As shown, the first fire-retaining wall 11 and the second fire-retaining wall 12 divide the distance between the inner walls of the left and right sides of the furnace body 10 into three equal parts. The first air chamber 17, the secon...

Embodiment 2

[0035] A fluidized fluidized furnace used for one-step roasting of stone coal. Except following technical parameter, all the other are with embodiment 1:

[0036] The length and height of the first fire-retaining wall 11 and the second fire-retaining wall 12 are the same, and the height is 9 / 16~10 / 16 of the height of the furnace body 10;

[0037] The length of the first fluidized bed 1 is 17 / 20~18 / 20 of the inner wall length of the furnace body 10, and the width is 17 / 60~18 / 60 of the inner wall width of the furnace body 10;

[0038] The height of the first overflow plate 18 is 9 / 12-10 / 12 of the height of the fire wall;

[0039] The vertical distance between the first gas burner 4, the second gas burner 5 and the third gas burner 13 and the bottom of the furnace body 10 is the same, and the distance is 2 / 6~3 / 6 of the height of the fire wall;

[0040] The vertical distance between the tuyere 7 and the top of the furnace body 10 is 7 / 48~8 / 48 of the height of the furnace body 10...

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PUM

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Abstract

The invention relates to a fluidized bed furnace used for one-step roasting of stone coal. According to the technical scheme, a first wind chamber (17), a second wind chamber (16) and a third wind chamber (15) which are arranged below a first fluidized bed (1), a second fluidized bed (2) and a third fluidized bed (14) in sequence communicate with a first fan (22), a second fan (23) and a third fan (24) correspondingly through pipelines. A furnace body (10) is provided with a first gas burner (4), a second gas burner (5) and a third gas burner (13). A first discharging outlet (19), a second discharging outlet (20) and a third discharging outlet (26) are sequentially arranged between a first overflow plate (18) and the front side wall of the furnace body (10), between a second overflow plate (21) and the front side wall of the furnace body (10) as well as between a third overflow plate (25) and the front side wall of the furnace body (10). A tuyere (7) is formed in the upper portion of the left side wall of the furnace body (10) and communicates with a fourth fan (6). A feeding inlet (8) is formed in the top of the furnace body (10), and the central extension line of the feeding inlet (8) intersects with the central extension line of the tuyere (7). The fluidized bed furnace used for one-step roasting of stone coal has the characteristics of being high in raw material adaptability, easy to operate, high in roasting material yield, high in roasting efficiency and high in energy utilization rate.

Description

technical field [0001] The invention belongs to the technical field of fluidized fluidized furnaces. Specifically relates to a fluidized fluidized furnace for one-step roasting of stone coal. Background technique [0002] As the traditional sodium roasting-water leaching vanadium extraction process of stone coal is gradually replaced by a new vanadium extraction process, the research on the equipment and technology of the blank roasting link in the process of vanadium extraction from stone coal is increasingly in-depth. In recent years, based on the characteristics of high roasting efficiency, strong fuel adaptability and fast adjustment speed of fluidized roasting technology, as well as the wide application of this technology in the field of nonferrous metallurgy, fluidized roasting technology and equipment have been widely used in the field of vanadium extraction from stone coal. It has also been deeply researched and widely used. [0003] Due to the special movement sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/10C22B34/22
CPCC22B1/10C22B34/22
Inventor 张一敏袁益忠刘涛黄晶陈铁军
Owner WUHAN UNIV OF SCI & TECH
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