Desulfurization system for magnesium metal smelting

Abstract

The utility model relates to the technical field of magnesium production, in particular to a desulfurization system for magnesium metal smelting, and aims to solve the technical problems that in the prior art, crushing is carried out in advance, calcination, procedures and equipment are excessive, and the crushing difficulty is high. The grate cylinder is connected with rotating power, the side wall, at the axis of the grate cylinder, of the desulfurization furnace is rotationally connected with one end of a crushing shaft, the crushing shaft at the end is connected with rotating power, the other end of the crushing shaft is rotationally connected into a bearing frame, the bearing frame is connected to the inner wall of a feeding port, a plurality of hammer frames are evenly distributed and connected to the crushing shaft, and the hammer frames are connected with hammer heads. The grate cylinder drives the internal magnesium-containing stones to rotate to be matched with the central hammer head, the stones with reduced calcining strength are crushed and fall to the lower part through the grate cylinder to be continuously calcined and desulfurized, and compared with a traditional grate plate, the grate cylinder is not easy to block and does not need to be shut down to clear blockage.

Description

Technical Field

[0001] The utility model relates to the technical field of magnesium production, and specifically relates to a desulfurization system for metal magnesium smelting. Background Art

[0002] During the process of metal magnesium smelting, desulfurization is an important link. Sulfur elements will form sulfide inclusions in metallic magnesium, and these inclusions will reduce the purity of magnesium and affect the physical and chemical properties of magnesium. For example, sulfur will reduce the mechanical properties such as the strength and ductility of magnesium, and may cause defects in magnesium products during subsequent processing and use. Through desulfurization treatment, the sulfur content in magnesium can be effectively reduced, thereby improving the quality of magnesium and making it more in line with the requirements of various application fields. Usually, calcination desulfurization is used to treat magnesium-containing raw materials. During the calcination process, part of the sulfur volatilizes in the form of sulfur dioxide to complete desulfurization;

[0003] In the prior art, it is first crushed and then calcined. While there are too many processes and equipment, the crushing difficulty is relatively large. The utility model solves the above problems. Content of the Utility Model

[0004] In order to solve the technical problems that in the prior art, it is first crushed and then calcined, with too many processes and equipment and relatively large crushing difficulty, the utility model further provides a desulfurization system for metal magnesium smelting.

[0005] To achieve the above object, the utility model provides the following technical solution: A desulfurization system for metal magnesium smelting, comprising: a desulfurization furnace, an inlet is provided on the side wall of the desulfurization furnace, an inlet door capable of being sealed and locked is provided outside the inlet, a heat source is provided at the lower part of the bottom wall of the desulfurization furnace, a flue gas pipe is connected to the upper part of the desulfurization furnace, a grate cylinder is arranged inside the desulfurization furnace at the inlet, the grate cylinder is rotationally connected to a bracket, the grate cylinder is connected to a rotational power source, one end of a crushing shaft is rotationally connected to the side wall of the desulfurization furnace at the axis of the grate cylinder, this end of the crushing shaft is connected to a rotational power source, the other end of the crushing shaft is rotationally connected to a bearing bracket, the bearing bracket is connected to the inner wall of the inlet, and a plurality of hammer brackets are evenly connected to the crushing shaft, and the hammer brackets are connected to hammer heads.

[0006] Preferably, the crushing shaft and the grate cylinder rotate in opposite directions.

[0007] Preferably, a toothed ring is connected to the outside of the grate cylinder, the toothed ring is meshed with a gear, the gear is connected to an input shaft, and the input shaft is rotationally connected to the side wall of the desulfurization furnace.

[0008] Preferably, a flow guide plate is connected to the middle of the inner bottom wall of the desulfurization furnace. The two side surfaces of the flow guide plate are curved surfaces. There are two spiral blades arranged on both sides of the flow guide plate. The spiral blades are connected to the conveying shafts. The two conveying shafts rotate on the two opposite side walls of the desulfurization furnace respectively. The conveying directions of the two spiral blades are opposite. The side walls of the desulfurization furnace at the ends of the two spiral blades are communicated with a discharge pipe. The spiral blades are concentric with and in contact with the curved surface of the flow guide plate, the curved surface of the inner bottom corner of the desulfurization furnace, and the inner wall of the discharge pipe. A discharge valve is arranged in the discharge pipe.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] After the heat source heats the desulfurization furnace, the grate cylinder drives the magnesium-containing stones inside to rotate and cooperate with the central hammer head to crush the stones with reduced calcination strength. The stones fall through the grate cylinder and continue to be calcined and desulfurized in the lower part. The rotation of the grate cylinder is not easily blocked compared with the traditional grate plate, and there is no need to stop the machine for blockage removal;

[0011] After the crushed stones fall to the lower part, they are circulated, conveyed, turned over by the spiral blades inside the desulfurization furnace to accelerate the desulfurization speed. After completion, the two spiral blades are rotated in the reverse direction, and the two spiral blades respectively discharge the calcined white through the corresponding discharge pipes to complete the firing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0013] Figure 2 is the structural sectional schematic diagram of the present utility model Figure 1 ;

[0014] Figure 3 is the structural sectional schematic diagram of the present utility model Figure 2 ;

[0015] Figure 4 is the structural schematic diagram of the present utility model Figure 2 .

[0016] In the figure: desulfurization furnace 1; feed inlet 2; feed door 3; flue gas pipe 4; grate cylinder 5; bracket 6; crushing shaft 7; bearing bracket 8; hammer bracket 9; hammer head 10; toothed ring 11; gear 12; input shaft 13; flow guide plate 14; spiral blade 15; conveying shaft 16; discharge pipe 17. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0018] The rotational connection described in this device refers to installing a bearing on a shaft by baking. A circlip groove is provided on the shaft or the shaft hole, and the bearing is axially fixed by clamping an elastic circlip in the circlip groove to achieve rotation. The hinge connection refers to a connection method that is movable on connecting parts such as hinges, pin shafts, and short shafts.

[0019] The present utility model will be described in detail below with reference to the accompanying drawings. Embodiment

[0020] The following will combine with the attached Figures 1-4 This embodiment will illustrate a desulfurization system for magnesium metal smelting, including: a desulfurization furnace 1, a feed inlet 2 is provided on the side wall of the desulfurization furnace 1, an inlet door 3 that can be sealed and locked is provided outside the feed inlet 2, a heat source is provided at the lower part of the bottom wall of the desulfurization furnace 1, a flue gas pipe 4 is connected to the upper part of the desulfurization furnace 1, a grate cylinder 5 is provided inside the desulfurization furnace 1 at the feed inlet 2, the grate cylinder 5 is rotationally connected in a bracket 6, the grate cylinder 5 is connected to a rotational power source, one end of a crushing shaft 7 is rotationally connected to the side wall of the desulfurization furnace 1 at the axis of the grate cylinder 5, this end of the crushing shaft 7 is connected to a rotational power source, the other end of the crushing shaft 7 is rotationally connected in a bearing bracket 8, the bearing bracket 8 is connected to the inner wall of the feed inlet 2, a plurality of hammer brackets 9 are evenly distributed and connected on the crushing shaft 7, and the hammer brackets 9 are connected to hammer heads 10;

[0021] Put dolomite stones into the grate cylinder 5 through the feed inlet 2, seal and lock the inlet door 3, turn on the power of the grate cylinder 5, turn on the heat source, the desulfurization furnace 1 is heated, and the stones start to calcine. The grate cylinder 5 rotates to evenly spread the stones, making the calcination more uniform. After a period of time, turn on the power of the crushing shaft 7. The crushing shaft 7 drives the hammer heads 10 to rotate through the hammer brackets 9. The hammer heads 10 come into contact with the lifted stones and crush the stones with reduced strength after calcination. The crushed stones enter the area with higher temperature in the lower part of the desulfurization furnace 1 through the holes of the grate cylinder 5, and the desulfurization and calcination effect is better. The rotation of the grate cylinder 5 is not easily blocked compared with the traditional grate plate, and there is no need to stop the machine for blockage cleaning. The flue gas with sulfur dioxide is discharged through the flue gas pipe 4 to complete desulfurization.

[0022] The rotation direction of the crushing shaft 7 is opposite to that of the grate cylinder 5;

[0023] The crushing shaft 7 drives the hammer heads 10 to collide head-on with the stones driven by the grate cylinder 5, and the crushing effect is better.

[0024] A gear ring 11 is connected to the outside of the grate cylinder 5. The gear ring 11 is meshed and connected with a gear 12, and the gear 12 is connected to an input shaft 13. The input shaft 13 is rotationally connected to the side wall of the desulfurization furnace 1;

[0025] Power is input from the input shaft 13. The input shaft 13 drives the gear 12 to rotate. The gear 12 drives the gear ring 11 to rotate. The gear ring 11 drives the grate cylinder 5 to rotate to complete the transmission.

[0026] In the middle of the inner bottom wall of the desulfurization furnace 1, a flow guide plate 14 is connected. The two side surfaces of the flow guide plate 14 are curved surfaces. On both sides of the flow guide plate 14, there are two spiral blades 15. The spiral blades 15 are connected to the conveying shafts 16. The two conveying shafts 16 rotate on the two opposite side walls of the desulfurization furnace 1 respectively. The conveying directions of the two spiral blades 15 are opposite. The side walls of the desulfurization furnace 1 at the ends of the two spiral blades 15 are communicated with a discharge pipe 17. The spiral blades 15 are concentric with and in contact with the curved surface of the flow guide plate 14, the curved surface of the inner bottom corner of the desulfurization furnace 1, and the inner wall of the discharge pipe 17. A discharge valve is arranged in the discharge pipe 17;

[0027] After the crushed stones fall, they are guided to both sides of the flow guide plate 14 by the curved surface of the flow guide plate 14. Since the conveying directions of the two spiral blades 15 are opposite, during calcination, the conveying shafts 16 drive the spiral blades 15 to convey the crushed stones in the opposite direction of the discharge pipe 17. The valve in the discharge pipe 17 is closed. The two spiral blades 15 drive the crushed stones to circulate and turn over at the bottom of the desulfurization furnace 1, and the desulfurization effect is better. After the desulfurization is completed, the conveying shafts 16 are controlled to rotate in the reverse direction, the valve in the discharge pipe 17 is opened, and the two spiral blades 15 drive the calcined white after desulfurization to be discharged through the discharge pipe 17, completing the discharging.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desulfurization system for magnesium metal smelting, comprising: A desulfurization furnace (1), wherein a feed port (2) is provided on a side wall of the desulfurization furnace (1), a feed door (3) capable of being sealed and locked is provided outside the feed port (2), a heat source is provided at the lower part of the bottom wall of the desulfurization furnace (1), and a flue gas pipe (4) is connected to the upper part of the desulfurization furnace (1). The invention is characterized in that a grate cylinder (5) is provided inside the desulfurization furnace (1) at the feed port (2), the grate cylinder (5) is rotatably connected to the bracket (6), the grate cylinder (5) is connected to the rotating power, one end of a crushing shaft (7) is rotatably connected to the side wall of the desulfurization furnace (1) at the axis of the grate cylinder (5), the crushing shaft (7) at this end is connected to the rotating power, the other end of the crushing shaft (7) is rotatably connected to the bearing frame (8), the bearing frame (8) is connected to the inner wall of the feed port (2), a plurality of hammer frames (9) are evenly connected to the crushing shaft (7), and the hammer frames (9) are connected to hammer heads (10).

2. A desulfurization system for magnesium smelting according to claim 1, characterized in that: The crushing shaft (7) and the grate cylinder (5) rotate in opposite directions.

3. A desulfurization system for magnesium smelting according to claim 1, characterized in that: The grate cylinder (5) is externally connected to a gear ring (11), the gear ring (11) is meshingly connected to a gear (12), the gear (12) is connected to an input shaft (13), and the input shaft (13) is rotatably connected to a side wall of the desulfurization furnace (1).

4. A desulfurization system for magnesium smelting according to claim 1, characterized in that: A guide plate (14) is connected to the middle of the inner bottom wall of the desulfurization furnace (1). The two side surfaces of the guide plate (14) are curved surfaces. Two spiral blades (15) are provided on both sides of the guide plate (14). The spiral blades (15) are connected to a conveying shaft (16). The two conveying shafts (16) rotate on two opposite side walls of the desulfurization furnace (1), respectively. The conveying directions of the two spiral blades (15) are opposite. The side walls of the desulfurization furnace (1) at the ends of the two spiral blades (15) are connected to a discharge pipe (17). The spiral blades (15) are concentric with and in contact with the curved surface of the guide plate (14), the curved surface of the inner bottom corner of the desulfurization furnace (1), and the inner wall of the discharge pipe (17). A discharge valve is provided in the discharge pipe (17).

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