Cold state boiling roasting furnace

Abstract

The utility model discloses a kind of cold state boiling roasting furnace in the technical field of boiling roasting furnace, including furnace body. Vertical first baffle and second baffle are equipped in furnace body, first baffle and second baffle divide hearth, air chamber and distribution plate into first hearth, second hearth and third hearth independent of each other. The front side of furnace body top is equipped with feed hopper, and the rear side of furnace body top is equipped with cyclone return feeder group. The part of distribution plate corresponding to first hearth, second hearth and third hearth is respectively provided with first aperture, second aperture and third aperture. The aperture rate of first aperture, second aperture and third aperture increases. The utility model is designed by modularization sectional structure and gradient fluidization control, realizes the accurate adaptation of fluidization parameter, effectively improves material roasting efficiency and reduces equipment energy consumption, simultaneously meets the comparative experiment and production process demand of multiple materials.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed roasting furnace technology, and in particular to a cold fluidized bed roasting furnace. Background Technology

[0002] In the field of non-ferrous metal smelting, fluidized bed roasters are commonly used equipment for the oxidative roasting of sulfide ores to extract valuable metals. Currently, however, these fluidized bed roasters face numerous problems in actual production. On the one hand, their roasting efficiency is low and energy consumption is high, significantly increasing production costs and hindering efficient resource utilization. On the other hand, severe equipment wear and tear, along with frequent repairs and replacements of parts, not only increase operating costs but also affect the continuity of production.

[0003] Further analysis revealed that these problems mainly stemmed from factors such as poor material fluidization, unreasonable process parameters, inappropriate distribution plate opening ratio, and unreasonable air cap arrangement. Uneven material fluidization leads to incomplete roasting, while inappropriate process parameters, distribution plate opening ratio, and air cap arrangement further exacerbate energy consumption and equipment wear.

[0004] Therefore, to address technical challenges in industrial production such as uneven material fluidization, high energy consumption, and significant equipment wear, utilizing a cold-state fluidized bed roasting furnace as a forward-looking experimental platform for fluidized bed roasting is particularly important. Through scientific experimental design and data analysis, the material fluidization index can be accurately determined and process parameters optimized, thereby effectively improving the current situation. Utility Model Content

[0005] The main objective of this invention is to provide a cold-state boiling roasting furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A cold-state fluidized bed roasting furnace includes a furnace body fixed to a frame. The furnace body contains a furnace chamber, with an air chamber below the furnace chamber, and a distribution plate between the furnace chamber and the air chamber. The furnace body has a vertical first partition and a second partition, which separate the furnace chamber, air chamber, and distribution plate into three independent furnace chambers: a first furnace chamber, a second furnace chamber, and a third furnace chamber. A feed hopper is located at the front top of the furnace body, with a connecting pipe at its lower end, connecting to the top of each of the first, second, and third furnace chambers. A cyclone return feeder assembly is located at the rear top of the furnace body, comprising multiple cyclone return feeders. The return pipe at the lower end of each cyclone return feeder connects to the middle of each of the first, second, and third furnace chambers, and an exhaust pipe is located at the upper end of each cyclone return feeder. The distribution plate has first, second, and third openings corresponding to the portions of the first, second, and third furnace chambers, respectively. The opening ratios of the first, second, and third openings increase progressively.

[0008] Furthermore, both the first and second partitions are equipped with sealing gaskets and are fixed with bolts. The distribution plate is also fixed with bolts.

[0009] Furthermore, a pulse dust collector is connected to the end of the exhaust pipe.

[0010] Furthermore, an air inlet pipe is provided at the lower end of the air chamber, and a blower is connected to the end of the air inlet pipe.

[0011] Furthermore, a material cleaning port is provided on the side of the furnace body.

[0012] Furthermore, the first, second, and third openings are equipped with wind caps, which are arranged in a rectangular, triangular, square, or circular pattern.

[0013] This invention also includes other components that enable the cold-state fluidized bed roasting furnace to function normally, and these devices or components all employ conventional techniques in the art. Furthermore, devices and components not limited in this invention all employ conventional techniques in the art, such as the blower and pulse dust collector mentioned in this application. In specific implementation, appropriate equipment or component models can be selected according to the specific working scenario.

[0014] The working principle of this invention is as follows: The furnace chamber, air chamber, and distribution plate are divided into three independent operating units by detachable first and second partitions, forming a first, second, and third furnace chamber with progressively increasing opening ratios. During operation, different furnace chamber units can be used individually or in combination according to the material characteristics, and the corresponding distribution plate units can be quickly replaced via bolted connections. The rectangular, triangular, square, or circular arrangement of the air caps within each unit can be flexibly adjusted. The blower generates airflow that forms a gradient fluidization effect through the differentiated opening ratios on the distribution plate. The material achieves full boiling and roasting within the adjustable bed area, and the cyclone return feeder separates and returns particles in the rising airflow. This modular structure allows for targeted optimization of fluidization parameters, effectively avoiding channeling and large bubble phenomena, and adapting to the comparative experiments and production process requirements of various materials.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Achieved precise optimization of fluidization parameters: The independent operating unit formed by three detachable partitions can select individual or combined operating modes according to the material characteristics, and optimize the opening ratio and wind cap arrangement of each unit in a targeted manner.

[0017] 2. Improved equipment adaptability: The distribution plate unit with bolted connection structure has a quick replacement mechanism, combined with a gradient increasing opening ratio design, which effectively avoids channeling and large bubble phenomena and reduces equipment wear.

[0018] 3. Enhanced reliability of experimental data: The adjustable bed area design combined with the separation mechanism of the cyclone return feeder ensures that the materials achieve full boiling roasting under different chemical conditions, providing accurate parameter basis for industrial production. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is the front view of the present invention.

[0021] Figure 3 This is the left view of the present invention.

[0022] Figure 4 For along Figure 2 A cross-sectional view along the AA direction.

[0023] Figure 5 This is a top view of the present invention.

[0024] Figure 6 For along Figure 2 Cross-sectional view along the BB direction.

[0025] In the diagram: 1. Frame; 2. Furnace body; 21. First furnace chamber; 22. Second furnace chamber; 23. Third furnace chamber; 3. Air chamber; 4. Cyclone return feeder assembly; 41. Return pipe; 42. Exhaust pipe; 5. Feed hopper; 6. First partition; 7. Second partition; 8. Distribution plate; 9. First opening; 10. Second opening; 11. Third opening; 12. Air inlet pipe; 13. Cleaning port. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Example:

[0028] like Figures 1-6As shown, a cold-state fluidized bed roasting furnace includes a furnace body 2 fixed to a frame 1. The furnace body 2 contains a furnace chamber, with an air chamber 3 located below the furnace chamber. A distribution plate 8 is provided between the furnace chamber and the air chamber 3. The furnace body 2 contains a vertical first partition 6 and a second partition 7, which separate the furnace chamber, air chamber 3, and distribution plate 8 into three independent furnace chambers: a first furnace chamber 21, a second furnace chamber 22, and a third furnace chamber 23. A feed hopper 5 is located at the front top of the furnace body 2, with a connecting pipe at its lower end. The connecting pipe connects to the top of the first furnace chamber 21, the second furnace chamber 22, and the third furnace chamber 23, respectively. A cyclone return feeder assembly 4 is located at the rear top of the furnace body 2. The cyclone return feeder assembly 4 includes multiple cyclone return feeders. The return pipe 41 at the lower end of each cyclone return feeder connects to the middle of the first furnace chamber 21, the second furnace chamber 22, and the third furnace chamber 23, respectively. An exhaust pipe 42 is located at the upper end of each cyclone return feeder. The distribution plate 8 has a first opening 9, a second opening 10, and a third opening 11 respectively corresponding to the portions of the first furnace chamber 21, the second furnace chamber 22, and the third furnace chamber 23. The opening ratios of the first opening 9, the second opening 10, and the third opening 11 increase progressively.

[0029] Specifically, the first opening 9, the second opening 10 and the third opening 11 are provided with wind caps, and the wind caps are arranged in a rectangular, triangular, square or circular pattern.

[0030] In addition, sealing gaskets are provided on both the first partition 6 and the second partition 7, and they are fixed with bolts. The distribution plate 8 is fixed with bolts. A pulse dust collector is connected to the end of the exhaust pipe 42. An air inlet pipe 12 is provided at the lower end of the air chamber 3, and a blower is connected to the end of the air inlet pipe 12. A cleaning port 13 is opened on the side of the furnace body 2.

[0031] The working principle of this utility model of a cold-state fluidized bed roasting furnace is as follows: the furnace chamber, air chamber 3, and distribution plate 8 are divided into three independent operating units by a detachable first partition 6 and second partition 7, forming a first furnace chamber 21, a second furnace chamber 22, and a third furnace chamber 23 with progressively increasing opening ratios. During operation, different furnace chamber units can be selected individually or in combination according to the material characteristics, and the corresponding distribution plate 8 unit can be quickly replaced through a bolted connection structure. The rectangular, triangular, square, or circular arrangement of the air caps in each unit can be flexibly adjusted. The blower generates airflow that forms a gradient fluidization effect through the differentiated opening ratios on the distribution plate 8, allowing the material to achieve full fluidized bed roasting within the adjustable bed area. The cyclone return feeder group 4 separates and returns particles in the rising airflow. This modular structure allows the equipment to optimize fluidization parameters, effectively avoid channeling and large bubble phenomena, and adapt to the comparative experiments and production process requirements of various materials.

[0032] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A cold-state fluidized bed roasting furnace, comprising a furnace body (2) fixed to a frame (1), characterized in that: The furnace body (2) is provided with a furnace chamber, and a wind chamber (3) is provided below the furnace chamber. A distribution plate (8) is provided between the furnace chamber and the wind chamber (3). The furnace body (2) is provided with a vertical first partition (6) and a second partition (7). The first partition (6) and the second partition (7) separate the furnace chamber, the wind chamber (3) and the distribution plate (8) into independent first furnace chambers (21), second furnace chambers (22) and third furnace chambers (23). A feed hopper (5) is provided on the front side of the top of the furnace body (2). A connecting pipe is provided at the lower end of the feed hopper (5). The connecting pipe is connected to the top of the first furnace chamber (21), the second furnace chamber (22) and the third furnace chamber (23) respectively. The furnace body (2) is provided with a cyclone return feeder group (4) on the rear side of the top. The cyclone return feeder group (4) includes multiple cyclone return feeders. The return pipe (41) at the lower end of each cyclone return feeder is connected to the middle of the first furnace chamber (21), the second furnace chamber (22) and the third furnace chamber (23) respectively. The upper end of each cyclone return feeder is provided with an exhaust pipe (42). The distribution plate (8) is provided with a first opening (9), a second opening (10) and a third opening (11) respectively corresponding to the parts of the first furnace chamber (21), the second furnace chamber (22) and the third furnace chamber (23). The opening ratio of the first opening (9), the second opening (10) and the third opening (11) increases.

2. The cold-state fluidized bed roasting furnace according to claim 1, characterized in that: The first partition (6) and the second partition (7) are both provided with sealing gaskets and are fixed by bolts; the distribution plate (8) is fixed by bolts.

3. The cold-state fluidized bed roasting furnace according to claim 1, characterized in that: The exhaust pipe (42) is connected to a pulse dust collector at its end.

4. The cold-state fluidized bed roasting furnace according to claim 1, characterized in that: The lower end of the air chamber (3) is provided with an air inlet pipe (12), and the end of the air inlet pipe (12) is connected to a blower.

5. The cold-state fluidized bed roasting furnace according to claim 1, characterized in that: The furnace body (2) has a cleaning port (13) on its side.

6. The cold-state fluidized bed roasting furnace according to claim 1, characterized in that: Wind caps are provided in the first opening (9), the second opening (10) and the third opening (11), and the wind caps are arranged in a rectangular, triangular, square or circular pattern.

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