A method for one-step boiling and roasting of stone coal

The technology of boiling roasting and stone coal is applied in the field of vanadium extraction and roasting from stone coal, which can solve the problems of complicated processing process, low yield of roasting material, and low energy utilization rate, and achieves simple operation, high roasting efficiency and high energy utilization rate. Effect

Active Publication Date: 2018-01-23
WUHAN UNIV OF SCI & TECH
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This method can improve the roasting effect of fine-grained stone coal, but the single-roasting system of the main and auxiliary beds is not very adaptable to different grain-sized stone coals
[0005] To sum up, the existing treatment methods for the problems in the boiling roasting process of stone coal still have problems such as poor raw material adaptability, complicated treatment process, low roasting material yield, low roasting efficiency and low energy utilization rate.

Method used

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  • A method for one-step boiling and roasting of stone coal
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  • A method for one-step boiling and roasting of stone coal

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Embodiment 1

[0031] A method for boiling and roasting stone coal in one step. The equipment used in the fluidized roasting method is "a fluidized furnace for one-step roasting of stone coal", and the structure of the "fluidized furnace for one-step roasting of stone coal" is:

[0032] 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 3As shown, the first fire-retaining wall 11...

Embodiment 2

[0048] A method for boiling and roasting stone coal in one step. The equipment used in this embodiment is "a fluidized furnace for one-step roasting of stone coal", and the structure of the "fluidized furnace for one-step roasting of stone coal" is the same as in Example 1 except for the following technical parameters:

[0049] 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;

[0050] 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;

[0051] The height of the first overflow plate 18 is 9 / 12-10 / 12 of the height of the fire wall;

[0052] 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 to 3 / 6...

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Abstract

The invention relates to a method for fluidized roasting of stone coal in one step. According to the technical scheme, a fluidized-bed roaster for roasting the stone coal in one step is adopted for roasting; stone coal crushing materials are fed into a roaster body (10) from a feeding inlet (8); the feeding amount and the wind speed of an air port (7) are regulated so that the stone coal crushing materials are distributed in a first fluidized bed (1), a second fluidized bed (2) and a third fluidized bed (14) according to different size fractions; the blast volumes of a first fan (19), a second fan (20) and a third fan (21) are adjusted to regulate the height of a material layer; the coal gas volumes of a first coal gas burner (4), a second coal gas burner (5) and a third coal gas burner (13) are adjusted to regulate a roasting system; after roasting finishes, roasted materials in the first fluidized bed (1), the second fluidized bed (2) and the third fluidized bed (14) are respectively discharged from a first discharge port (19), a second discharge port (20) and a third discharge port (26) and are combined to obtain the stone coal roasted materials. The method has the characteristics of strong material adaptability, simple operation, high yield of the roasted material, high roasting efficiency and high energy utilization rate.

Description

technical field [0001] The invention belongs to the technical field of vanadium extraction and roasting from stone coal. It specifically relates to a method for one-step boiling and 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 also been used in the field of vanadium extraction from stone coal. It has been deeply researched and widely used. [0003] Due to the special moti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02C22B34/22
CPCC22B1/02C22B34/22
Inventor 张一敏袁益忠刘涛黄晶陈铁军
Owner WUHAN UNIV OF SCI & TECH
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