Preparation device for sintered chromite

Abstract

The utility model relates to the technical field of iron alloy smelting, and discloses a sintered chromite preparation device which comprises a supporting frame, a disc pelletizer is fixedly connected to the upper surface of the supporting frame, a feeding port is formed in the disc pelletizer, a vertical planetary mixer is arranged above the disc pelletizer, and a discharging port is formed in the vertical planetary mixer. The outer wall of the vertical planetary mixer is fixedly connected with a feeding box, the lower surface of the vertical planetary mixer is fixedly connected with a discharging barrel, the outer wall of the vertical planetary mixer is fixedly connected to the outer wall of the supporting frame, one end of the disc pelletizer is fixedly connected with a first feeding pipe, and one end of the first feeding pipe is fixedly connected with a briquetting machine. According to the device, the vertical planetary mixer, the disc pelletizer, the briquetting machine and the preheating assembly are matched with one another, so that the problems that the sintering yield is low and the energy consumption is high when the device works, and the sintering effect is affected due to the poor preparation process before the sintering procedure are solved, and the effects of reducing the energy consumption and improving the sintering quality are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ferroalloy smelting, in particular to a preparation device for sintered chromite. Background Art

[0002] Chromite is an important raw material for the production of high-carbon ferrochrome in ferroalloys, most of which is powder. If chromite powder is used directly in ferrochrome smelting, the permeability of the electric furnace will deteriorate, the furnace condition will deteriorate, energy consumption will increase, and it will be detrimental to the safe operation of the electric furnace. Therefore, the chromite powder must be pretreated, and then the raw materials such as untreated ore powder, on-site pretreated ore powder and bentonite can be sintered according to their physical and chemical properties. Therefore, a preparation device for sintered chromite is needed.

[0003] The main sintering method of chromite ore powder in sintered chromite preparation equipment is pelletizing roasting method. The existing pelletizing roasting method is to dry, mix and grind the chromite ore powder and coal powder or coke powder, and then add bentonite and water to make balls. According to the different physical and chemical properties of chromite ores and the balling and pelletizing roasting consolidation characteristics, they are finally dried and roasted to obtain redox balls.

[0004] However, when using the sintering chromite preparation device, due to the high melting point of chromite, it is difficult to form a low melting point liquid phase, resulting in low sintering output and high energy consumption. At the same time, the preparation process of chromite ore powder before the sintering process is poor, which in turn affects the sintering effect of chromite. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a preparation device for sintered chromite, aiming to improve the problem in the prior art that when the device is working, due to the high melting point of chromite, it is difficult to form a low melting point liquid phase, resulting in low sintering output and high energy consumption. At the same time, the preparation process of chromite ore powder before the sintering process is poor, which in turn affects the sintering effect of chromite ore.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a preparation device for sintered chromite, comprising a support frame, a disc pelletizing machine is fixedly connected to the upper surface of the support frame, a feed port is opened inside the disc pelletizing machine, a vertical planetary mixer is arranged above the disc pelletizing machine, a feed box is fixedly connected to the outer wall of the vertical planetary mixer, a discharge barrel is fixedly connected to the lower surface of the vertical planetary mixer, the outer wall of the vertical planetary mixer is fixedly connected to the outer wall of the support frame, a feed pipe is fixedly connected to one end of the disc pelletizing machine, and a briquetting machine is fixedly connected to one end of the feed pipe.

[0007] Furthermore, a feed pipe 2 is fixedly connected to one side of the outer wall of the briquetting machine, one end of the feed pipe 2 is fixedly connected to a powder coating machine, a powder feeding tube is fixedly connected to the upper surface of the powder coating machine, a feed pipe 3 is fixedly connected to one side of the outer wall of the powder coating machine, one end of the feed pipe 3 is fixedly connected to a sintering machine, a drain pipe is fixedly connected to the lower surface of the sintering machine, and a valve 2 is fixedly connected to the outer wall of the drain pipe.

[0008] Furthermore, a cavity is opened on the inner wall of the sintering machine, a sintering cylinder is fixedly connected to the inner wall of the sintering machine, and a preheating component is arranged on the upper surface of the sintering machine.

[0009] Furthermore, the preheating assembly includes a bottom plate and a heater, the outer wall of the bottom plate is fixedly connected to the upper surface of the sintering machine, and the outer wall of the heater is arranged above the sintering machine.

[0010] Furthermore, a support block is fixedly connected to the upper surface of the base plate, and a liquid storage tank is fixedly connected to the upper surface of the support block.

[0011] Furthermore, a liquid inlet cylinder is fixedly connected to the upper surface of the liquid storage tank, and the upper surface of the liquid storage tank is fixedly connected to the outer wall of the heater.

[0012] Furthermore, a pump body is fixedly connected to the upper surface of the bottom plate, a liquid inlet pipe is fixedly connected to the input end of the pump body, a liquid outlet pipe is fixedly connected to the output end of the pump body, and one end of the liquid inlet pipe is fixedly connected to the outer wall of the liquid storage tank.

[0013] Furthermore, one end of the liquid outlet pipe is fixedly connected to a three-way pipe, and the outer wall of the three-way pipe is fixedly connected to a valve 1.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the liquid storage tank, the liquid inlet cylinder, the heater, the support block, the liquid inlet pipe, the pump body, the liquid outlet pipe, the three-way pipe and the valve cooperate with each other, so as to solve the problem of low sintering output and high energy consumption caused by the high melting point of chromite when the device is working, thereby achieving the effect of preheating the sintering cylinder before sintering to reduce energy consumption and improve output at the same time.

[0016] 2. In the utility model, the vertical planetary mixer, disc ball making machine, briquetting machine and powder coating machine cooperate with each other, thereby solving the problem that the poor preparation process of chromite ore powder before the sintering process affects the sintering effect, thereby achieving the effect of step-by-step processing of raw materials to improve the quality of raw materials and sintering quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a preparation device for sintered chromite proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a preheating component of a sintered chromite preparation device proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the sintering machine structure of a sintered chromite preparation device proposed by the utility model;

[0020] Figure 4 The utility model discloses a schematic diagram of the sintering cylinder structure of a sintering chromite preparation device.

[0021] Legend:

[0022] 1. Support frame; 2. Feed box; 3. Vertical planetary mixer; 4. Discharge barrel; 5. Disc pelletizing machine; 6. Feed inlet; 7. Feed pipe one; 8. Briquetting machine; 9. Feed pipe two; 10. Powder coating machine; 11. Powder feed barrel; 12. Feed pipe three; 13. Sintering machine; 14. Preheating assembly; 15. Bottom plate; 16. Liquid storage tank; 17. Liquid feed barrel; 18. Heater; 19. Support block; 20. Liquid inlet pipe; 21. Pump body; 22. Liquid outlet pipe; 23. Tee pipe; 24. Valve one; 25. Drain pipe; 26. Valve two; 27. Cavity; 28. Sintering barrel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 and Figure 3The utility model provides an embodiment: a preparation device for sintered chromite, comprising a support frame 1, a disc ball making machine 5 is fixedly connected to the upper surface of the support frame 1, a feed inlet 6 is provided inside the disc ball making machine 5, a vertical planetary mixer 3 is arranged above the disc ball making machine 5, a feed box 2 is fixedly connected to the outer wall of the vertical planetary mixer 3, a discharge barrel 4 is fixedly connected to the lower surface of the vertical planetary mixer 3, the outer wall of the vertical planetary mixer 3 is fixedly connected to the outer wall of the support frame 1, and one end of the disc ball making machine 5 is fixedly connected to the outer wall of the support frame 1. A feeding pipe 1 7 is fixedly connected, one end of the feeding pipe 17 is fixedly connected to a briquetting machine 8, a feeding pipe 2 9 is fixedly connected to one side of the outer wall of the briquetting machine 8, one end of the feeding pipe 29 is fixedly connected to a powder coating machine 10, a powder feeding cylinder 11 is fixedly connected to the upper surface of the powder coating machine 10, a feeding pipe 3 12 is fixedly connected to one side of the outer wall of the powder coating machine 10, one end of the feeding pipe 3 12 is fixedly connected to a sintering machine 13, a drain pipe 25 is fixedly connected to the lower surface of the sintering machine 13, and a valve 2 26 is fixedly connected to the outer wall of the drain pipe 25.

[0025] Specifically, the disc pelletizing machine 5 and the vertical planetary mixer 3 can be supported by setting up a support frame 1, which is convenient for the placement and transportation of raw materials; raw materials are added to the feed box 2 on the vertical planetary mixer 3, the raw materials are fully mixed for the pelletizing process, and discharged from the discharge barrel 4 through the feed port 6 to the disc pelletizing machine 5, and the raw materials are changed into balls, which is convenient for subsequent preparation and processing; the briquetting machine 8 compacts the spherical raw materials to increase the density of the raw materials, thereby improving the final sintering effect and output effect; by pouring powder into the powder inlet barrel 11 for powder coating, the powder is fully in contact with the compacted raw materials so that they can be well covered on the raw materials. After the powder coating is completed, it is transported to the sintering barrel 28 in the sintering machine 13 to sinter the coated raw materials; the drain pipe 25 below the sintering machine 13 can discharge the preheating wastewater after the chromite ore is sintered to prevent the impurities in the wastewater from accumulating in the cavity 27 and affecting the subsequent sintering preheating effect, and the valve 26 can control the flow rate.

[0026] Reference Figure 2 and Figure 4A cavity 27 is provided on the inner wall of the sintering machine 13, a sintering cylinder 28 is fixedly connected to the inner wall of the sintering machine 13, a preheating assembly 14 is arranged on the upper surface of the sintering machine 13, the preheating assembly 14 includes a bottom plate 15 and a heater 18, the outer wall of the bottom plate 15 is fixedly connected to the upper surface of the sintering machine 13, the outer wall of the heater 18 is arranged above the sintering machine 13, a support block 19 is fixedly connected to the upper surface of the bottom plate 15, a liquid storage tank 16 is fixedly connected to the upper surface of the support block 19, a liquid inlet cylinder 17 is fixedly connected to the upper surface of the liquid storage tank 16, the upper surface of the liquid storage tank 16 is fixedly connected to the outer wall of the heater 18, a pump body 21 is fixedly connected to the upper surface of the bottom plate 15, an input end of the pump body 21 is fixedly connected to a liquid inlet pipe 20, an output end of the pump body 21 is fixedly connected to a liquid outlet pipe 22, one end of the liquid inlet pipe 20 is fixedly connected to the outer wall of the liquid storage tank 16, one end of the liquid outlet pipe 22 is fixedly connected to a three-way pipe 23, and the outer wall of the three-way pipe 23 is fixedly connected to a valve 24.

[0027] Specifically, the cavity 27 in the sintering machine 13 can be loaded with hot water to preheat the sintering cylinder 28, thereby improving the sintering effect; when sintering is to be performed, water is first added to the liquid inlet cylinder 17 above the sintering machine 13 into the liquid storage tank 16, and the heater 18 is started by starting the controller to heat the water. After the heating is completed, the pump body 21 is started to transport the water to the three-way pipe 23, and the water flow rate is adjusted by turning the valve 24, so that the valves 24 on both sides of the three-way pipe 23 can be preheated to different degrees according to different raw material requirements, so that the water flows into the cavity 27 in the sintering machine 13 to preheat the sintering cylinder 28; the cavity 27 is used to accommodate hot water and transfer heat with the sintering cylinder 28.

[0028] Working principle: When chromite ore needs to be sintered, first add water to the liquid storage tank 16 from the liquid inlet cylinder 17 above the sintering machine 13, start the controller to make the heater 18 work, heat the water, and after the heating is completed, start the pump body 21, so that its input end pumps water into the pump body 21 through the liquid inlet pipe 20, and then its output end delivers water to the three-way pipe 23 through the liquid outlet pipe 22, turn the valve 24, so that the water flows into the cavity 27 in the sintering machine 13, preheat the sintering cylinder 28, and then send it to the vertical line. Raw materials are added to the feed box 2 on the star mixer 3, mixed evenly, discharged from the discharge barrel 4 and discharged into the disc pelletizing machine 5 through the feed port 6, the raw materials are spherical, and then transported to the briquetting machine 8 through the feeding pipe 1 7, the spherical raw materials are briquette, and then transported to the powder coating machine 10 through the feeding pipe 2 9, and the powder is poured into the powder feeding barrel 11 for coating. After the coating is completed, it is transported to the sintering barrel 28 in the sintering machine 13 through the feeding pipe 3 12, the coated raw materials are sintered, and the finished product can be taken out after sintering.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for preparing sintered chromite, comprising a support frame (1), characterized in that: A disc pelletizing machine (5) is fixedly connected to the upper surface of the support frame (1), a feed port (6) is provided inside the disc pelletizing machine (5), a vertical planetary mixer (3) is arranged above the disc pelletizing machine (5), a feed box (2) is fixedly connected to the outer wall of the vertical planetary mixer (3), a discharge barrel (4) is fixedly connected to the lower surface of the vertical planetary mixer (3), the outer wall of the vertical planetary mixer (3) is fixedly connected to the outer wall of the support frame (1), one end of the disc pelletizing machine (5) is fixedly connected to a feed pipe (7), and one end of the feed pipe (7) is fixedly connected to a briquetting machine (8).

2. The device for preparing sintered chromite according to claim 1, characterized in that: A feed pipe 2 (9) is fixedly connected to one side of the outer wall of the briquetting machine (8), one end of the feed pipe 2 (9) is fixedly connected to a powder coating machine (10), the upper surface of the powder coating machine (10) is fixedly connected to a powder feeding cylinder (11), a feed pipe 3 (12) is fixedly connected to one side of the outer wall of the powder coating machine (10), one end of the feed pipe 3 (12) is fixedly connected to a sintering machine (13), a drain pipe (25) is fixedly connected to the lower surface of the sintering machine (13), and a valve 2 (26) is fixedly connected to the outer wall of the drain pipe (25).

3. The device for preparing sintered chromite according to claim 2, characterized in that: The inner wall of the sintering machine (13) is provided with a cavity (27), the inner wall of the sintering machine (13) is fixedly connected with a sintering cylinder (28), and the upper surface of the sintering machine (13) is provided with a preheating component (14).

4. The device for preparing sintered chromite according to claim 3, characterized in that: The preheating assembly (14) comprises a bottom plate (15) and a heater (18); the outer wall of the bottom plate (15) is fixedly connected to the upper surface of the sintering machine (13); and the outer wall of the heater (18) is arranged above the sintering machine (13).

5. The device for preparing sintered chromite according to claim 4, characterized in that: A support block (19) is fixedly connected to the upper surface of the bottom plate (15), and a liquid storage tank (16) is fixedly connected to the upper surface of the support block (19).

6. The device for preparing sintered chromite according to claim 5, characterized in that: The upper surface of the liquid storage tank (16) is fixedly connected to a liquid inlet cylinder (17), and the upper surface of the liquid storage tank (16) is fixedly connected to the outer wall of the heater (18).

7. The device for preparing sintered chromite according to claim 6, characterized in that: A pump body (21) is fixedly connected to the upper surface of the bottom plate (15); an input end of the pump body (21) is fixedly connected to a liquid inlet pipe (20); an output end of the pump body (21) is fixedly connected to a liquid outlet pipe (22); and one end of the liquid inlet pipe (20) is fixedly connected to the outer wall of the liquid storage tank (16).

8. The device for preparing sintered chromite according to claim 7, characterized in that: One end of the liquid outlet pipe (22) is fixedly connected to a three-way pipe (23), and the outer wall of the three-way pipe (23) is fixedly connected to a valve 1 (24).

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