A manganese dioxide electrolytic manganese compound pretreatment device

Abstract

The present invention discloses a manganese dioxide electrolytic manganese compound pretreatment device, comprising a feeding module, a reaction module, a rear-end processing module and a slurry transfer module; the reaction module comprises a reactor container, an atomizing pipeline is arranged in the reactor container to convey and atomize the reaction solution; the feeding module conveys manganese dioxide electrolytic manganese raw material to the reactor container through a weighing screw conveyor; the rear-end processing module is connected to the reactor container to absorb and treat the foam and dust generated during the reaction; the slurry transfer module is connected to the reactor container for slurry transfer. In the present invention, manganese dioxide electrolytic manganese is conveyed at the top of the reactor container; the reaction liquid is conveyed through the atomizing pipeline, and the manganese dioxide electrolytic manganese raw material reacts with the atomized solution in a suspended manner during the falling process, the reaction efficiency is high, the foam and dust generated during the slurrying process are reduced, and the pollution is reduced.

Description

Technical Field

[0001] The invention relates to a chemical pretreatment device, in particular to a chemical pretreatment device for manganese dioxide electrolysis. Background Art

[0002] Electrolytic manganese dioxide is the second largest industry in my country's ferrous metallurgy field. There is a saying that "steel cannot be made without manganese". With the development of modern industry, the use of manganese is becoming more and more extensive. Its application in various fields such as non-ferrous metallurgy, electronic technology, chemical industry, environmental protection, food hygiene, welding rod industry, aerospace industry, etc. is rapidly expanding.

[0003] However, with the rapid expansion and rapid development of the electrolytic manganese dioxide industry, the electrolytic manganese dioxide industry has gradually emerged with prominent resource and environmental problems, unsustainable development, low industry entry barriers, overcapacity, low industrial concentration, low overall industry technology level, and serious pollution.

[0004] In the existing manganese dioxide electrolytic manganese production, the slurry reaction efficiency of the reaction solution and the manganese dioxide electrolytic manganese raw material is low, the reaction is uneven, and some reactions are too intense, resulting in slurry overflow; the dust, foam, acid mist, etc. generated during the reaction process are seriously polluted, and the dust, foam, etc. adhere to the conveying pipeline, causing the pipeline to be blocked. Therefore, the existing technology needs to be improved. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a manganese dioxide electrolytic manganese compound pretreatment device to solve the problems of low efficiency of the slurry reaction between the reaction solution and the manganese dioxide electrolytic manganese raw material, uneven reaction, and excessively intense reactions in some parts leading to slurry overflow; and serious pollution such as dust, foam, acid mist, etc. generated during the reaction.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a manganese dioxide electrolytic manganese compound pretreatment device, including a feeding module, a reaction module, a back-end processing module and a slurry transfer module; the reaction module includes a reactor container, a liquid atomizer is arranged in the reactor container, and the liquid atomizer includes an atomization pipeline, and the atomization pipeline conveys and atomizes the reaction solution; the reactor container is connected to a weighing screw conveyor; the feeding module conveys manganese dioxide electrolytic manganese raw material to the reactor container through the weighing screw conveyor; the back-end processing module is connected to the reactor container to absorb and process the foam and dust generated during the reaction process; the slurry transfer module is connected to the reactor container for slurry transfer.

[0007] Furthermore, the atomization pipe is a spiral coil wound in an equidistant spiral shape, the atomization pipe is coaxially arranged with the reactor container, and a plurality of atomization nozzles are evenly arranged on the pipe wall of the atomization pipe; the inlet end of the atomization pipe passes through the outer wall of the reactor container and is arranged outside the reactor container; the inlet end of the atomization pipe is provided with a liquid inlet proportioning valve, and the atomization pipe is provided with a first flow meter near the inlet end.

[0008] Furthermore, a connected defoamer and dust remover is provided on the top of the reactor container, and the defoamer and dust remover is connected to the back-end processing module; an air vent is also provided on the top of the reactor container, and the air vent is connected to the slurry transfer module through an air vent pipe.

[0009] Furthermore, the back-end processing module includes a centrifugal water film dust collector and an acid mist absorption tower. The acid mist absorption tower is arranged on the top of the centrifugal water film dust collector and is connected to the acid mist absorption tower. The top of the defoaming and dust removal device is connected to one side of the top of the centrifugal water film dust collector through a dust collecting pipe. The bottom of the centrifugal water film dust collector is funnel-shaped, and the bottom of the centrifugal water film dust collector is connected to the slurry transfer module.

[0010] Furthermore, an annular nozzle is arranged on the inner side of the top of the centrifugal water film dust collector, a nozzle is arranged on the annular nozzle, the annular nozzle is connected to a spray pipe, the spray pipe is arranged outside the centrifugal water film dust collector, a proportional valve is arranged on the inlet of the spray pipe, and a second flow meter is arranged on the spray pipe.

[0011] Furthermore, a feed port is provided on the top of the reactor container, a lower feed port of the weighing screw conveyor is connected to the feed port of the reactor container, and a upper feed port of the weighing screw conveyor is connected to a feeding module.

[0012] Furthermore, the feeding module is arranged above the reactor container, and the feeding module includes a silo, a material discharging proportioning valve and a feeder connected in sequence, the feeder is connected to the feeding port of the weighing screw conveyor, and a dust collector is arranged on the top of the silo.

[0013] Furthermore, an agitator is provided in the reactor container, and the agitator includes a stirring motor, a stirring shaft and a stirring paddle. The stirring motor is arranged on the outside of the top of the reactor container, and the stirring paddle is arranged near the bottom of the reactor container; the stirring paddle is connected to the stirring motor through the stirring shaft.

[0014] Furthermore, a discharge pipe is provided at the bottom of the reactor container, and a liquid discharge proportioning valve is provided on the discharge pipe; the discharge pipe is connected to the slurry transfer module; a first liquid level sensor is provided on the side of the reactor container, and the first liquid level sensor monitors the capacity of the slurry in the reactor container.

[0015] Furthermore, the slurry transfer module is arranged below the reactor container, and the slurry transfer module includes a slurry transfer tank, and a slurry delivery pump is arranged at the bottom of the slurry transfer tank; the discharge pipe is connected to the top of the slurry transfer tank, and the top of the slurry transfer tank is connected to a breathable valve; a second liquid level sensor is arranged on the side of the slurry transfer tank, and the second liquid level sensor monitors the capacity of the slurry in the slurry transfer tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the manganese dioxide electrolytic manganese compound pretreatment device provided by the present invention, the manganese dioxide electrolytic manganese is transported by a feeding module arranged on the top of the reactor container via a weighing screw conveyor; the reaction liquid is transported through an atomization pipeline, so that the manganese dioxide electrolytic manganese raw material is dispersed, mixed and suspended with the atomized solution during the falling process, the reaction efficiency is high, the foam and dust generated by the reaction process of the manganese dioxide electrolytic manganese raw material and the solution during the slurrying process are reduced, and the risk of slurry overflow is reduced; the proportioning valve and flow meter and the weighing screw conveyor arranged at the inlet end of the atomization pipeline realize the online proportioning of the manganese dioxide electrolytic manganese raw material and the reaction solution; the proportioning valve is arranged on the discharge pipeline to realize the continuous transportation of the slurry, thereby improving the production efficiency; a defoaming and dust removal device is arranged to connect the centrifugal water film dust collector and the acid mist absorption tower to treat the generated dust, foam and acid mist, thereby reducing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a manganese dioxide electrolytic manganese compound pretreatment device in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a reactor container in an embodiment of the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0020] In the figure:

[0021] 1. Dust collector; 2. Silo; 3. Discharge proportioning valve; 4. Feeder; 5. Weighing screw conveyor; 5-1. Loading port; 5-2. Discharge port; 6. Reactor container; 6-1. Agitator; 6-2. Feeding port; 6-3. First liquid level sensor; 6-4. Air vent; 6-5. Defoaming and dust removal device; 6-6. First flow meter; 6-7. Atomizing pipeline; 6-8. Discharge pipeline; 6-9. Liquid outlet proportioning valve; 6-10. Liquid inlet proportioning valve; 7. Acid mist absorption tower; 8. Centrifugal water film dust collector; 8-1. Dust collecting pipeline; 8-2. Spray pipeline; 8-3. Proportional valve; 8-4. Second flow meter; 8-5. Annular nozzle; 9. Slurry transfer tank; 9-1. Second liquid level sensor; 9-2. Slurry pump; 9-3. Air vent; 9-4. Air valve. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 Schematic diagram of the structure of the manganese dioxide electrolytic manganese compound pretreatment device in an embodiment of the present invention.

[0024] See also Figure 1 The manganese dioxide electrolytic manganese compound pretreatment device of the embodiment of the present invention includes a feeding module, a reaction module, a back-end processing module and a slurry transfer module; the reaction module includes a reactor container 6, and a liquid atomizer is arranged in the reactor container 6. The liquid atomizer includes an atomization pipeline 6-7, and the atomization pipeline 6-7 conveys and atomizes the reaction solution; the reactor container 6 is connected to a weighing screw conveyor 5; the feeding module conveys manganese dioxide electrolytic manganese raw material to the reactor container 6 through the weighing screw conveyor 5; the manganese dioxide electrolytic manganese raw material and the atomized reaction solution react in a suspended manner in the reactor container 6 to generate slurry; the back-end processing module is connected to the reactor container 6 to absorb and process the foam and dust generated during the reaction process; the slurry transfer module is connected to the reactor container 6 for slurry transfer.

[0025] Please also see Figure 2 In the manganese dioxide electrolytic manganese compound pretreatment device of the embodiment of the present invention, the atomizing pipe 6-7 is a spiral coil with equal spacing and spiral winding, the atomizing pipe 6-7 is coaxially arranged with the reactor container 6, and a plurality of atomizing nozzles are evenly arranged on the pipe wall of the atomizing pipe 6-7; a feed port 6-2 is arranged on the top of the reactor container 6, the feed port 5-2 of the weighing screw conveyor 5 is connected to the feed port 6-2 of the reactor container 6, and the feed port 5-1 of the weighing screw conveyor 5 is connected to the feeding module. The manganese dioxide electrolytic manganese raw material is dispersed, mixed, and suspended with the atomized reaction solution during the falling process, and the contact is sufficient, and the reaction efficiency is high and uniform.

[0026] Specifically, the inlet end of the atomizing pipe 6-7 passes through the outer wall of the reactor container 6 and is arranged outside the reactor container 6; the inlet end of the atomizing pipe 6-7 is provided with a liquid inlet proportioning valve 6-10, and the atomizing pipe 6-7 is provided with a first flowmeter 6-6 near the inlet end; the first flowmeter 6-6 and the liquid inlet proportioning valve 6-10 calculate and quantify the reaction solution capacity and flow rate; the weighing screw conveyor 5 is used to weigh the manganese dioxide electrolytic manganese raw material and control the conveying amount. The collection, calculation and control of the conveying data of the manganese dioxide electrolytic manganese raw material are realized, and the online proportioning of the reaction solution and the manganese dioxide electrolytic manganese raw material is realized to improve the efficiency.

[0027] Specifically, a connected defoamer and dust collector 6-5 is provided on the top of the reactor container 6, and the defoamer and dust collector 6-5 is connected to the rear-end processing module; the defoamer and dust collector 6-5 absorbs part of the foam and dust generated by the reaction between the manganese dioxide electrolytic manganese raw material and the reaction solution during the slurrying process, and reduces the foam and dust entering the rear-end centrifugal water film dust collector 8 and the acid mist absorption tower 7.

[0028] Preferably, a vent hole 6-4 is also provided on the top of the reactor container 6, and the vent hole 6-4 is connected to the slurry transfer module through a vent pipe 9-3. The vent hole 6-4 adjusts the negative pressure of the rear centrifugal water film dust collector 8 and the acid mist absorption tower 7 on the reactor container 6, so that the air forms convection and improves the dust and acid mist collection efficiency.

[0029] Specifically, the back-end processing module includes a centrifugal water film dust collector 8 and an acid mist absorption tower 7. The acid mist absorption tower 7 is arranged on the top of the centrifugal water film dust collector 8 and is connected to the acid mist absorption tower 7. The acid mist absorption tower 7 is located at the upper end of the air outlet of the centrifugal water film dust collector 8 to absorb the acid mist in the centrifugal water film dust collector 8 so that the gas emission meets the safety standard; the top of the defoaming and deduster 6-5 is connected to one side of the top of the centrifugal water film dust collector 8 through the dust collecting pipe 8-1, and the bottom of the centrifugal water film dust collector 8 is funnel-shaped, and the bottom of the centrifugal water film dust collector 8 is connected to the slurry transfer module.

[0030] Please also see Figure 3 In the manganese dioxide electrolytic manganese compound pretreatment device of the embodiment of the present invention, an annular nozzle 8-5 is arranged on the inner side of the top of the centrifugal water film dust collector 8, and a nozzle is arranged on the annular nozzle 8-5. The water film formed by the nozzle flows evenly from top to bottom along the inner wall of the cylinder of the centrifugal water film dust collector 8. The dust mist with acidic gas enters the lower part of the cylinder of the centrifugal water film dust collector 8 from the dust collecting pipe 8-1 along the tangential direction. The gas dust mist rotates and rises in the cylinder. The centrifugal force generated thereby throws the ash particles onto the wall surface, which is wetted, adsorbed and washed by the water film flowing down the cylinder wall. Finally, the adsorbed slurry is formed and discharged from the bottom to the slurry transfer module, and the residual acid mist is discharged from the top into the acid mist absorption tower 7. The annular nozzle 8-5 is connected to the spray pipe 8-2, which is arranged outside the centrifugal water film dust collector 8. A proportional valve 8-3 is arranged at the inlet of the spray pipe 8-2, and a second flow meter 8-4 is arranged on the spray pipe 8-2; they are respectively used to calculate the capacity and flow rate of the spray liquid.

[0031] Preferably, the feeding module is arranged above the reactor container 6, and the feeding module comprises a silo 2, a feeding ratio valve 3 and a feeder 4 connected in sequence, and the feeder 4 is connected to the feeding port 5-1 of the weighing screw conveyor 5; a dust collector 1 is arranged on the top of the silo 2. The silo 2 is used to store manganese dioxide electrolytic manganese raw materials; the feeding ratio valve 3 controls the feeding amount of manganese dioxide electrolytic manganese raw materials; the feeder 4 controls the feeding speed of manganese dioxide electrolytic manganese raw materials; the dust collector 1 collects dust from the silo 2 to reduce pollution.

[0032] Specifically, the reactor container 6 is provided with an agitator 6-1, which includes a stirring motor, a stirring shaft and a stirring paddle, wherein the stirring motor is arranged outside the top of the reactor container 6, and the stirring paddle is arranged near the bottom of the reactor container 6; the stirring paddle is connected to the stirring motor through the stirring shaft. The agitator 6-1 is used to fully mix the slurry to prevent the slurry from settling and clogging the delivery pipeline.

[0033] Specifically, a discharge pipe 6-8 is provided at the bottom of the reactor container 6, and a liquid discharge proportioning valve 6-9 is provided on the discharge pipe 6-8; the discharge pipe 6-8 is connected to the slurry transfer module; a first liquid level sensor 6-3 is provided on the side of the reactor container 6, and the first liquid level sensor 6-3 monitors the volume of the slurry in the reactor container 6. The liquid discharge proportioning valve 6-9 is interlocked with the first liquid level sensor 6-3 to control the slurry volume and liquid discharge flow rate of the reactor container 6.

[0034] Preferably, the slurry transfer module is arranged below the reactor container 6, and the slurry transfer module includes a slurry transfer tank 9, and a slurry pump 9-2 is arranged at the bottom of the slurry transfer tank 9; the discharge pipe 6-8 is connected to the top of the slurry transfer tank 9, and the top of the slurry transfer tank 9 is connected to a breathable valve 9-4; the side of the slurry transfer tank 9 is provided with a second liquid level sensor 9-1, and the second liquid level sensor 9-1 monitors the capacity of the slurry in the slurry transfer tank 9. The slurry in the reactor container 6 and the adsorbed slurry in the centrifugal water film dust collector 8 enter the slurry transfer tank 9 through the discharge pipe 6-8. Since the slurry transfer tank 9 is equipped with a breathable pipe 9-3, and the breathable pipe 9-3 is connected to the breathable hole 6-4 of the reactor container 6, the air inside the slurry transfer tank 9 and the reactor container 6 enters the centrifugal water film dust collector 8 through the defoaming and dust removal device 6-6, and the residual acid mist is discharged from the top into the acid mist absorption tower 7, and the cycle works to achieve safe discharge.

[0035] To sum up, in the manganese dioxide electrolytic manganese compound pretreatment device of the embodiment of the present invention, the manganese dioxide electrolytic manganese is transported by a feeding module arranged on the top of the reactor container 6 via a weighing screw conveyor 5; the reaction liquid is transported through an atomizing pipe 6-7, so that the manganese dioxide electrolytic manganese raw material is dispersed, mixed and suspended with the atomized solution during the falling process, and the reaction efficiency is high, and the foam and dust generated by the reaction process between the manganese dioxide electrolytic manganese raw material and the solution during the slurrying process are reduced, and the risk of slurry overflow is reduced; the proportioning valve and flow meter and the weighing screw conveyor 5 arranged at the inlet end of the atomizing pipe 6-7 realize the online proportioning of the manganese dioxide electrolytic manganese raw material and the reaction solution; the discharging pipe 6-8 is provided with a proportioning valve to realize the continuous transportation of the slurry, thereby improving the production efficiency; a defoaming and dust removal device 6-5 is arranged to connect the centrifugal water film dust collector 8 and the acid mist absorption tower 7 to treat the generated dust, foam and acid mist, thereby reducing pollution.

[0036] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A manganese dioxide electrolytic manganese compound pretreatment device, characterized in that: It includes a feeding module, a reaction module, a back-end processing module and a slurry transfer module; the reaction module includes a reactor container, the reactor container is provided with a liquid atomizer, the liquid atomizer includes an atomization pipeline, the atomization pipeline conveys and atomizes the reaction solution; the reactor container is connected to a weighing screw conveyor; the feeding module conveys manganese dioxide electrolytic manganese raw material to the reactor container through the weighing screw conveyor; the back-end processing module is connected to the reactor container to absorb and process the foam and dust generated during the reaction; the slurry transfer module is connected to the reactor container to transfer the slurry; The atomizing pipe is a spiral coiled in an equidistant spiral shape. The atomizing pipe is coaxially arranged with the reactor container. A plurality of atomizing nozzles are evenly arranged on the pipe wall of the atomizing pipe. The inlet end of the atomizing pipe passes through the outer wall of the reactor container and is arranged outside the reactor container. The inlet end of the atomizing pipe is provided with a liquid inlet proportioning valve, and the atomizing pipe is provided with a first flow meter near the inlet end. A connected defoamer and dust remover is arranged on the top of the reactor container, and the defoamer and dust remover is connected to the back-end processing module; a vent hole is also arranged on the top of the reactor container, and the vent hole is connected to the slurry transfer module through a vent pipe.

2. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 1, characterized in that: The back-end processing module includes a centrifugal water film dust collector and an acid mist absorption tower. The acid mist absorption tower is arranged on the top of the centrifugal water film dust collector and is connected to the acid mist absorption tower. The top of the defoaming and dust removal device is connected to one side of the top of the centrifugal water film dust collector through a dust collecting pipe. The bottom of the centrifugal water film dust collector is funnel-shaped, and the bottom of the centrifugal water film dust collector is connected to the slurry transfer module.

3. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 2, characterized in that: An annular nozzle is arranged on the inner side of the top of the centrifugal water film dust collector, a nozzle is arranged on the annular nozzle, the annular nozzle is connected to a spray pipe, the spray pipe is arranged outside the centrifugal water film dust collector, a proportional valve is arranged on the inlet of the spray pipe, and a second flow meter is arranged on the spray pipe.

4. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 1, characterized in that: A feed port is provided on the top of the reactor container, a lower feed port of the weighing screw conveyor is connected to the feed port of the reactor container, and a upper feed port of the weighing screw conveyor is connected to a feeding module.

5. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 1, characterized in that: The feeding module is arranged above the reactor container, and comprises a silo, a material discharging proportioning valve and a feeder which are connected in sequence. The feeder is connected to a feeding port of a weighing screw conveyor, and a dust collector is arranged on the top of the silo.

6. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 1, characterized in that: The reactor container is provided with an agitator, which includes a stirring motor, a stirring shaft and a stirring paddle. The stirring motor is arranged on the outside of the top of the reactor container, and the stirring paddle is arranged near the bottom of the reactor container; the stirring paddle is connected to the stirring motor through the stirring shaft.

7. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 1, characterized in that: A discharge pipe is arranged at the bottom of the reactor container, and a liquid discharge proportioning valve is arranged on the discharge pipe; the discharge pipe is connected to the slurry transfer module; a first liquid level sensor is arranged on the side of the reactor container, and the first liquid level sensor monitors the capacity of the slurry in the reactor container.

8. The manganese dioxide electrolytic manganese compound pretreatment device according to claim 7, characterized in that: The slurry transfer module is arranged below the reactor container, and the slurry transfer module includes a slurry transfer tank, and a slurry delivery pump is arranged at the bottom of the slurry transfer tank; the discharge pipe is connected to the top of the slurry transfer tank, and the top of the slurry transfer tank is connected to a breathable valve; a second liquid level sensor is arranged on the side of the slurry transfer tank, and the second liquid level sensor monitors the capacity of the slurry in the slurry transfer tank.

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