Safety device for large-scale industrial production of electrolytic manganese metal powder

Abstract

The utility model discloses a safety device for large-scale industrial production of electrolytic manganese metal powder, which comprises a ball mill and a control end, the ball mill is connected with ash removal equipment through a peripheral discharge pipe, a feed chute is arranged at a feed port of the ball mill, the feed chute is communicated with a nitrogen storage tank through a nitrogen pipeline, and the nitrogen storage tank is communicated with the control end. Nitrogen in the nitrogen storage tank comes from the air pressure nitrogen making machine, a double-layer discharging valve is arranged at the top of the feeding chute, the double-layer discharging valve is formed by connecting two discharging valves in series, the top discharging valve is closed after discharging is completed, the bottom discharging valve conducts discharging, and only one of the two discharging valves is in an open state in the same time period. According to the safety device for large-scale industrial production of electrolytic manganese metal powder, through improvement of the ball mill and matched equipment of the ball mill and addition of nitrogen circulation and dust removal equipment, the oxygen content is reduced, explosion and fire of manganese metal dust are inhibited, and the production safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of explosive metal powder production technology, specifically a safety device for large-scale chemical industrial production of electrolytic manganese metal powder. Background Technology

[0002] Electrolytic manganese powder is flammable and explosive in air, easily oxidized, dissolves and releases hydrogen when exposed to dilute acids, and can decompose water to release hydrogen gas at slightly above room temperature. Manganese powder [with a water content of ≥25%] is a flammable solid; extremely fine manganese dust can ignite upon contact with a ignition source, reacts with water or acid to release hydrogen gas, and can form an explosive mixture when mixed with oxidants. Using traditional dry mills for electrolytic manganese powder production poses significant safety hazards. Therefore, wet ball milling is primarily used for electrolytic manganese powder production. However, manganese powder products are prone to hydrolysis and oxidation, which presents drawbacks. To address this, the industrial technology for electrolytic manganese powder production is optimized to improve production safety. Utility Model Content

[0003] The purpose of this invention is to provide a safety device for large-scale industrial production of electrolytic manganese powder, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A safety device for large-scale chemical industrial production of electrolytic manganese powder includes a ball mill and a control terminal. The ball mill is connected to a dust removal device through a peripheral discharge pipe. The ball mill is equipped with a feed chute at its feed inlet. The feed chute is also connected to a nitrogen storage tank through a nitrogen pipeline. The nitrogen in the nitrogen storage tank is sourced from an air-compressed nitrogen generator.

[0006] As a further improvement of this utility model: the top of the feed chute is provided with a double-layer discharge valve, which consists of two discharge valves connected in series. The top discharge valve closes after completing the discharge, and the bottom discharge valve discharges. Only one of the two discharge valves can be in the open state at the same time.

[0007] As a further improvement of this utility model: an ash discharge valve is installed on the peripheral discharge pipe, and the output end of the nitrogen pipeline is also connected to the ash removal equipment.

[0008] As a further improvement of this utility model, the ball mill is also equipped with a dust removal system;

[0009] The dust removal system mainly consists of a dust collector. The ball mill is connected to the dust collector through a dust exhaust pipeline. The dust collector is equipped with an explosion vent at the top, and the output end of the nitrogen pipeline is also connected to the dust collector.

[0010] As a further embodiment of this utility model: the dust collector is also equipped with a circulating air storage tank and a chimney. The output end of the dust collector is connected to an induced draft fan. The output end of the induced draft fan is connected to the chimney and the circulating air storage tank respectively and is equipped with a valve to control the airflow direction. The circulating air storage tank is connected to the feed chute and the dust removal equipment respectively through a circulating air pipeline.

[0011] As a further improvement of this utility model: the nitrogen pipeline is equipped with multiple valves that control the nitrogen gas path, and the nitrogen delivery route is controlled by the nitrogen control valve, and the control terminal controls each valve.

[0012] As a further improvement of this utility model, a spiral discharge valve is installed at the material outlet of the peripheral discharge pipe to prevent gas from the ball mill chamber from being discharged from the peripheral discharge pipe.

[0013] As a further improvement of this utility model: the circulating air storage tank, the circulating air pipeline and the dust exhaust pipeline are equipped with an online oxygen content detector, and the control terminal controls the opening and closing of each valve through the detection value of the online oxygen content detector.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This large-scale chemical industrial production safety device for electrolytic manganese powder production improves production safety by adding nitrogen circulation and dust removal equipment through improvements to the ball mill and its supporting equipment, reducing oxygen content, suppressing the explosion and fire of manganese dust, and improving production safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a safety device for large-scale industrial production of electrolytic manganese powder.

[0017] In the diagram: 1. Ball mill; 2. Feed chute; 3. Double-layer discharge valve; 4. Circulating air duct; 5. Nitrogen duct; 6. Exhaust fan; 7. Chimney; 8. Compressed nitrogen compressor; 9. Circulating air storage tank; 10. Nitrogen storage tank; 11. Explosion vent; 12. Dust collector; 13. Dust exhaust duct; 14. Peripheral discharge pipe; 15. Ash discharge valve; 16. Ash removal equipment. Detailed Implementation

[0018] Please see Figure 1In this embodiment of the present invention, a safety device for large-scale industrial production of electrolytic manganese metal powder includes a ball mill 1 and a control terminal. The ball mill 1 is connected to a dust removal device 16 through a peripheral discharge pipe 14. The feed inlet of the ball mill 1 is provided with a feed chute 2, and the feed chute 2 is also connected to a nitrogen storage tank 10 through a nitrogen pipeline 5. The nitrogen in the nitrogen storage tank 10 is sourced from an air-compressed nitrogen generator 8. To address this issue, the ball mill 1 is a horizontal dry ball mill with peripheral discharge. The ball mill 1 is equipped with double-layer discharge valves 3 at its inlet and outlet. The exhaust port of the ball mill 1 is connected to a dust collector 12, and the exhaust pipe of the dust collector 12 returns to the specially designed feed inlet of the ball mill 1. The entire system uses nitrogen circulation to ensure that no explosion occurs during the electrolytic manganese metal powder production process, enabling large-scale industrial production.

[0019] In a preferred embodiment, a double-layer discharge valve 3 is provided at the top of the feed chute 2. The double-layer discharge valve 3 consists of two discharge valves connected in series. The top discharge valve closes after completing the discharge, while the bottom discharge valve discharges. Only one of the two discharge valves can be open at the same time. This feeding method can keep the ball mill 1 in a sealed state, reduce the entry of external oxygen, and also reduce the leakage of internal nitrogen or circulating gas.

[0020] In a preferred embodiment, an ash discharge valve 15 is installed on the peripheral discharge pipe 14, and the output end of the nitrogen pipeline 5 is also connected to the ash removal equipment 16.

[0021] In a preferred embodiment, the ball mill 1 is also equipped with a dust removal system;

[0022] The dust removal system mainly consists of a dust collector 12. The ball mill 1 is connected to the dust collector 12 through a dust exhaust pipeline 13. The dust collector 12 is equipped with an explosion vent 11 at the top. The output end of the nitrogen pipeline 5 is also connected to the dust collector 12. There is also extremely fine manganese dust inside the dust collector 12, which may cause combustion and pose a safety hazard. The introduction of nitrogen can effectively prevent this.

[0023] In a preferred embodiment, the dust collector 12 is also equipped with a circulating air storage tank 9 and a chimney 7. The output end of the dust collector 12 is connected to an induced draft fan 6. The output end of the induced draft fan 6 is connected to the chimney 7 and the circulating air storage tank 9 respectively and is equipped with a valve to control the air flow direction. The circulating air storage tank 9 is connected to the feed chute 2 and the dust removal equipment 16 respectively through the circulating air pipeline 4. The gas is transported to the circulating air inlet of the feed chute 2 of the ball mill 1 through the pipeline by the induced draft fan 6, so that the gas is circulated and nitrogen is saved.

[0024] In a preferred embodiment, the nitrogen pipeline 5 is equipped with multiple valves that control the nitrogen gas path. The nitrogen delivery route is controlled by the nitrogen control valve, and the control terminal controls each valve.

[0025] In a preferred embodiment, a spiral discharge valve is installed at the material outlet of the peripheral discharge pipe 14 to prevent gas from the ball mill chamber 1 from being discharged from the peripheral discharge pipe 14.

[0026] In a preferred embodiment, an online oxygen content detector is installed on the circulating air storage tank 9, the circulating air pipeline 4, and the dust exhaust pipeline 13. The control terminal controls the opening and closing of each valve based on the detection value of the online oxygen content detector.

[0027] The gas discharge port of the ball mill 1, which is also the dust exhaust pipeline 13, is connected to the dust collector 12. The dust in the chamber of the ball mill 1 is extracted and filtered through the dust collector bag. The gas is transported by the induced draft fan 6 through the pipeline to the circulating air inlet of the feed chute 2 of the ball mill 1. The dust collection pipeline of the ball mill 1, including the circulating air storage tank 9, the circulating air pipeline 4 and the dust exhaust pipeline 13, is equipped with an online oxygen content detector. When the oxygen content in the dust collection pipeline is lower than a certain index, firstly, supplementary nitrogen is introduced into the nitrogen inlet of the feed chute 2 of the ball mill 1; secondly, the outlet valve of the switching induced draft fan 6 is opened to switch the gas to direct discharge into the direct exhaust chimney 7.

[0028] The entire system is equipped with automatic nitrogen fire suppression. An online oxygen content detector is installed on the dust collection pipeline at the outlet of ball mill 1, and a nitrogen storage tank is provided. It is connected to several gas supply valves installed on the ash hopper of dust collector 12. In the event of a fire, all inlet and outlet pipeline valves on dust collector 12 are closed first, and the control valves are adjusted to fill the ball mill 1, dust collector 12 and dust removal equipment 16 with nitrogen to reduce the oxygen content and suppress the explosion of metallic manganese dust.

[0029] It should be noted that all the above embodiments belong to the same utility model concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0030] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A safety device for large-scale industrial production of electrolytic manganese metal powder, comprising a ball mill (1) and a control terminal, wherein the ball mill (1) is connected to a dust removal device (16) via a peripheral discharge pipe (14), characterized in that, The ball mill (1) is provided with a feed chute (2) at its feed inlet. The feed chute (2) is also connected to a nitrogen storage tank (10) via a nitrogen pipeline (5). The nitrogen in the nitrogen storage tank (10) is sourced from an air-compressed nitrogen generator (8).

2. The safety device for large-scale industrial electrolytic manganese powder production according to claim 1, characterized in that, The top of the feed chute (2) is provided with a double-layer discharge valve (3). The double-layer discharge valve (3) consists of two discharge valves connected in series. The top discharge valve closes after completing the discharge, and the bottom discharge valve discharges. Only one of the two discharge valves can be in the open state at the same time.

3. A safety device for large-scale industrial production of electrolytic manganese powder according to claim 1, characterized in that, An ash discharge valve (15) is installed on the peripheral discharge pipe (14), and the output end of the nitrogen pipeline (5) is also connected to the ash removal equipment (16).

4. A safety device for large-scale industrial production of electrolytic manganese powder according to claim 1, characterized in that, The ball mill (1) is also equipped with a dust removal system; The dust removal system is mainly composed of a dust collector (12). The ball mill (1) is connected to the dust collector (12) through a dust exhaust pipeline (13). The dust collector (12) is equipped with an explosion vent (11) at the top. The output end of the nitrogen pipeline (5) is also connected to the dust collector (12).

5. A safety device for large-scale industrial production of electrolytic manganese powder according to claim 4, characterized in that, The dust collector (12) is also equipped with a circulating air storage tank (9) and a chimney (7). The output end of the dust collector (12) is connected to the induced draft fan (6). The output end of the induced draft fan (6) is connected to the chimney (7) and the circulating air storage tank (9) respectively and is equipped with a valve to control the air flow direction. The circulating air storage tank (9) is connected to the feed chute (2) and the dust removal equipment (16) respectively through the circulating air pipeline (4).

6. A safety device for large-scale industrial production of electrolytic manganese powder according to claim 5, characterized in that, The nitrogen pipeline (5) is equipped with multiple valves that control the nitrogen gas path. The nitrogen delivery route is controlled by the nitrogen control valve, and each valve is controlled by the control terminal.

7. A safety device for large-scale industrial production of electrolytic manganese powder according to claim 1 or 3, characterized in that, The material outlet of the peripheral discharge pipe (14) is equipped with a spiral discharge valve that can prevent the gas in the ball mill (1) chamber from being discharged from the peripheral discharge pipe (14).

8. A safety device for large-scale industrial production of electrolytic manganese powder according to claim 6, characterized in that, The circulating air storage tank (9), circulating air pipeline (4) and dust exhaust pipeline (13) are equipped with online oxygen content detectors. The control terminal controls the opening and closing of each valve by the detection value of the online oxygen content detector.

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