Continuous leaching control system for pyrolusite or crude manganese dioxide

Abstract

The invention discloses a control system for continuous leaching of pyrolusite or crude manganese dioxide, and relates to the technical field of hydrometallurgical equipment, in particular to a control system for wet continuous leaching of manganese sulfate from pyrolusite or crude manganese dioxide. Comprising a leaching device, a sulfur burning power generation device, a connecting pipeline, a pulping barrel feeding proportion control mechanism, a first-stage and second-stage absorption tower feeding control mechanism, a first-stage absorption tower discharging control mechanism and an automatic device for realizing continuous steady-state leaching of pyrolusite or crude manganese dioxide.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrometallurgy equipment, in particular to a continuous leaching control system for pyrolusite or coarse manganese dioxide. BACKGROUND

[0002] Battery-grade manganese sulfate directly affects the energy density and cycle life of lithium-ion battery cathode materials (such as nickel-cobalt-manganese ternary materials) as a key precursor. With the explosive growth of the new energy vehicle industry, the global demand for battery-grade manganese sulfate is increasing. At present, manganese sulfate production can be divided into two categories at home and abroad: one is manganese ore pre-reduction leaching method; the second is manganese ore direct acid leaching method. The most commonly used method for manganese ore pre-reduction leaching is coal roasting-sulfuric acid leaching, two ore roasting-sulfuric acid leaching, and two ore acid leaching, SO2 reduction leaching in direct acid leaching. In the current manganese sulfate production process, batch operation is mostly used, which has low production efficiency, a large amount of non-productive time (such as loading, unloading, cleaning, heating / cooling, waiting time), low equipment utilization rate, and far lower unit time output than continuous production. Frequent manual intervention is required, and more operators are needed for repetitive batch operation, monitoring, recording, and cleaning work, and the automation level is relatively low. There is a risk of batch-to-batch product quality differences. Each batch is independently operated, and is affected by factors such as feeding accuracy, operation sequence, time control, and equipment cleaning level. The product quality may differ between batches, and quality control is more challenging.

[0003] In view of the adverse factors caused by the low automation level of batch production, there is an urgent need for a system that can achieve continuous steady-state leaching, automatic control, and energy cascade utilization. SUMMARY

[0004] In view of the low efficiency, poor stability, and resource waste of the traditional process in the prior art, the present application proposes a continuous leaching control system for pyrolusite or coarse manganese dioxide, which is an automatic control system for wet continuous leaching of manganese sulfate from pyrolusite. By integrating the leaching device, sulfur incineration power generation device, and multi-stage control mechanism, continuous steady-state leaching and efficient resource utilization are achieved.

[0005] The technical method of the continuous leaching control system for pyrolusite or coarse manganese dioxide is as follows: The automatic control mechanism realizes the coordinated operation of slurry preparation, sulfur dioxide absorption, liquid level adjustment, and sulfur incineration power generation, develops a control means for controlling the leaching discharge amount based on the sulfur injection amount, reduces manual intervention, and realizes continuous steady-state operation.

[0006] The purpose of the present application is achieved by the following technical solutions: A continuous leaching control system for pyrolusite or coarse manganese dioxide includes a leaching device, a sulfur incineration power generation device, a control mechanism and a control valve, and a connecting pipeline. The leaching device comprises a pyrolusite or coarse manganese dioxide powder bin (A1), a pyrolusite or coarse manganese dioxide belt scale (A2), a pulp making barrel (A3), a slurry conveying pump (A4), a secondary absorption tower (A5), a secondary circulating pump (A6), a primary absorption tower (A7), a primary circulating pump (A8), a transfer barrel (A9), and a transfer pump (A10). The pyrolusite or coarse manganese dioxide powder bin (A1) stores pyrolusite or coarse manganese dioxide with qualified particle size and moisture. The pyrolusite or coarse manganese dioxide and process water are proportionally fed into the pulp making barrel (A3) through the belt scale (A2) and a process water pipe (B2) to form uniform slurry. The secondary absorption tower (A5) and the primary absorption tower (A7) are connected in series. The secondary absorption tower (A5) reabsorbs the residual gas at the top of the primary absorption tower (A7) to improve the utilization rate of sulfur dioxide. The transfer barrel (A9) is used for temporarily storing the slurry output by the primary absorption tower. The slurry is sent out by the transfer pump (A10). The sulfur burning power generation device comprises a sulfur hopper (A11), a sulfur conveying belt (A12), a sulfur melting tank (A13), a liquid sulfur pump (A14), a sulfur burning furnace (A15), a boiler (A16), and a generator set (A17). The sulfur melting tank (A13) melts sulfur into liquid sulfur by steam heating. The sulfur burning furnace (A15) burns the liquid sulfur with dry air to generate high-temperature sulfur dioxide. The boiler (A16) recovers waste heat to generate power. The generator set (A17) generates power by using high-pressure steam from the boiler and discharges medium-pressure steam for use in the downstream. The control valve comprises a process water valve (C1), a slurry feeding adjusting valve (C2), a slurry feeding limiting valve (C3), a slurry bridge adjusting valve (C4), a slurry bridge limiting valve (C5), an output adjusting valve (C6), an output limiting valve (C7), a steam adjusting valve (C8), and an auxiliary sampling valve (C9). The control mechanism comprises a pulp making barrel feeding proportion control mechanism, a secondary absorption tower feeding control mechanism, a primary absorption tower feeding control mechanism, a primary absorption tower output control mechanism, and a sulfur melting control mechanism in the sulfur burning power generation device. The pulp barrel feed proportion control mechanism comprises a pulp barrel liquid level transmitter (D1), a pulp barrel liquid level display controller (D2), a soft manganese ore or coarse manganese dioxide belt scale weight recording transmitter (D3), a process water flow transmitter (D4), and a process water flow proportional display controller (D5). The secondary absorption tower feed control mechanism comprises a secondary absorption tower bottom liquid level transmitter (D6), a secondary absorption tower bottom liquid level display controller (D7), and a secondary absorption tower bottom liquid level high-low alarm (D8). The primary absorption tower feed (i.e., secondary absorption tower discharge) control mechanism comprises a secondary absorption tower bottom liquid level high-low alarm (D8), a primary absorption tower bottom liquid level transmitter (D9), and a primary absorption tower bottom liquid level display controller (D10). The primary absorption tower discharge control mechanism comprises a primary absorption tower bottom liquid level low alarm (D11), a liquid sulfur flow transmitter (D12), a discharge flow transmitter (D13), and a liquid sulfur discharge flow proportional display controller (D14). The molten sulfur control mechanism in the sulfur burning power generation device comprises a molten sulfur tank liquid level transmitter (D15), a molten sulfur tank liquid level display controller (D16), and a molten sulfur tank temperature controller (D17). The connecting pipelines comprise a soft manganese ore or coarse manganese dioxide feed (B1), a process water pipe (B2), a ore slurry conveying pipe (B3), a secondary absorption circulating pipe (B4), a gas phase bridging pipe (B5), a tail gas pipe (B6), a slurry bridging pipe (B7), a primary absorption circulating pipe (B8), a discharge pipe (B9), a transfer pipe (B10), a sulfur feed (B11), a steam heating pipe (B12), a condensed water pipe (B13), a dry air pipe (B14), a liquid sulfur spraying pipe (B15), a high-temperature sulfur dioxide gas pipe (B16), and a low-temperature sulfur dioxide gas pipe (B17).

[0007] Further, the leaching device, wherein: the soft manganese ore or coarse manganese dioxide powder bin (A1) is used for storing soft manganese ore or coarse manganese dioxide with qualified particle size and moisture; the soft manganese ore or coarse manganese dioxide belt scale (A2) is used for accurately measuring the weight of the soft manganese ore or coarse manganese dioxide; the pulp barrel (A3) is used for stirring the soft manganese ore or coarse manganese dioxide with the formula weight and the process water with the formula volume to make a uniform slurry; the ore slurry conveying pump (A4) is used for conveying the slurry in the slurry barrel to the secondary absorption tower (A5); the primary absorption tower (A7) is used for the first-stage absorption of the sulfur dioxide generated by the sulfur burning power generation device by the soft manganese ore slurry; the secondary absorption tower (A5) is used for the re-absorption of the residual gas on the top of the primary absorption tower; the primary absorption tower (A7) and the secondary absorption tower (A5) are connected in series; the primary circulating pump (A8) is used for the circulating spraying and the discharge pump of the ore slurry in the primary absorption tower; the secondary circulating pump (A6) is used as the circulating spraying and the discharge pump of the ore slurry in the secondary absorption tower (A5); the transfer barrel (A9) is used as a temporary storage barrel for the discharge of the primary absorption tower (A7); and the transfer pump (A10) is used for conveying the materials in the transfer barrel to the outside of the control system.

[0008] Further, the sulfur-burning power generation device, wherein: a sulfur bunker (A11) is used to store solid sulfur to be used; a sulfur conveyor belt (A12) is used to convey the solid sulfur in the sulfur bunker (A11) to a sulfur melting tank (A13); the sulfur melting tank (A13) is used to melt the solid sulfur into liquid sulfur by steam coil heating; a liquid sulfur pump (A14) is used to pump the liquid sulfur in the sulfur melting tank (A13) into a sulfur-burning furnace (A15); the sulfur-burning furnace (A15) is used to mix and burn the liquid sulfur with dry air in a combustion chamber to generate sulfur dioxide; a boiler (A16) is used to recover high-pressure steam generated by the sulfur-burning furnace (A15); and a generator set (A17) uses the high-pressure steam generated by the boiler (A16) to drive a back-pressure steam turbine to generate power and discharge medium-pressure steam to a steam pipe network for use by lower-level users.

[0009] Further, the connecting pipeline, wherein: the raw pyrolusite or coarse manganese dioxide (B1) is transported into the control system from the raw pyrolusite or coarse manganese dioxide outside the control system; the process water pipe (B2) is used to connect the control system pulp barrel (A3) with the process water pipe network; the slurry conveying pipe (B3) is used to connect the control system pulp barrel (A3) with the slurry conveying pump (A4) and the secondary absorption tower (A5); the secondary absorption circulating pipe (B4) connects the tower bottom with the tower body of the secondary absorption tower (A5), which is used for internal slurry circulation; the gas phase bridging pipe (B5) connects the gas phase at the top of the primary absorption tower (A7) with the bottom of the secondary absorption tower (A5) to form a series structure; the tail gas pipe (B6) connects the gas phase at the top of the secondary absorption tower (A5) to the desulfurization device outside the control system for tail gas desulfurization treatment; the slurry bridging pipe (B7) connects the secondary absorption circulating pipe (B4) with the bottom of the primary absorption tower (A7), which is used for transferring the slurry in the secondary absorption tower (A5) to the primary absorption tower (A7); the primary absorption circulating pipe (B8) connects the tower bottom with the tower body of the primary absorption tower (A7), which is used for internal slurry circulation; the discharge pipe (B9) connects the primary absorption circulating pipe (B8) with the transfer barrel (A9), which is used for transferring the slurry in the primary absorption tower (A7) to the transfer barrel (A9); the transfer pipe (B10) is used to transport the material in the transfer barrel (A9) to the process outside the control system; the sulfur feed (B11) refers to the solid sulfur loaded into the sulfur hopper (A11) through the loading and unloading tool; the steam heating pipe (B12) is used to connect the heating coil in the molten sulfur tank (A13) with the steam pipe network; the condensed water pipe (B13) is used to connect the heating coil in the molten sulfur tank (A13) with the condensed water pipe network to discharge the condensed water in the heating coil; the dry air pipe (B14) is used to connect the dry air of the air drying system with the sulfur incinerator (A15); the liquid sulfur spraying pipe (B15) connects the molten sulfur tank (A13) with the liquid sulfur pump (A14) to the sulfur incinerator (A15) for liquid sulfur transportation; the high-temperature sulfur dioxide gas pipe (B16) is used to connect the sulfur incinerator (A15) with the boiler (A16) to transport high-temperature sulfur dioxide gas; the low-temperature sulfur dioxide gas pipe (B17) connects the sulfur dioxide generated by the sulfur power generation device and subjected to cooling treatment with the leaching device, which is used for transporting sulfur dioxide gas.

[0010] Further, the control valve, wherein: the process water valve (C1) is installed on the process water pipe, the valve position number LV0201 (FC) is a valve type using an energy failure closed pneumatic control valve; the ore pulp feeding regulating valve (C2) is installed on the ore pulp conveying pipe (B3), the valve position number LV0202 (FC) is a valve type using an energy failure closed pneumatic control valve; the ore pulp feeding limiting valve (C3) is installed on the gas source pipeline of the ore pulp feeding regulating valve (C2), used for controlling the on-off of the gas source of the ore pulp feeding regulating valve (C2), XV0203 (FO) is a valve type using an energy failure opened on-off solenoid valve; the slurry bridging regulating valve (C4) is installed on the slurry bridging pipe (B7), the valve position number LV0204 (FC) is a valve type using an energy failure closed pneumatic control valve; the slurry bridging limiting valve (C5) is installed on the gas source pipeline of the slurry bridging regulating valve (C4), used for controlling the on-off of the gas source of the slurry bridging regulating valve (C4), XV0205 (FO) is a valve type using an energy failure opened on-off solenoid valve; the discharge regulating valve (C6) is installed on the discharge pipe (B9), the valve position number LV0206 (FC) is a valve type using an energy failure closed pneumatic control valve; the discharge limiting valve (C7) is installed on the gas source pipeline of the discharge regulating valve (C6), used for controlling the on-off of the gas source of the discharge regulating valve (C6), XV0207 (FO) is a valve type using an energy failure opened on-off solenoid valve; the steam regulating valve (C8) is installed on the steam heating pipe (B12), the valve position number LV0101 (FC) is a valve type using an energy failure closed pneumatic control valve; the auxiliary sampling valve (C9) is installed on the low-temperature sulfur dioxide gas pipe (B17) leading-out pipe, used for collecting gas sample and detecting the sulfur dioxide concentration.

[0011] Further, the control mechanism, used for: Pulping proportion control: the liquid level transmitter (D1) is linked with the flow proportion controller (D5) to adjust the proportion of the manganite or crude manganese dioxide and water; Liquid level dynamic adjustment: the secondary absorption tower liquid level transmitter (D6) controls the feeding through the regulating valve (C2), and the high-low alarm (D8) triggers the limiting valve (C3) to prevent overflow; Sulfur burning temperature control: the molten sulfur tank (A13) temperature controller (D17) adjusts the steam valve (C8) to maintain the liquid sulfur temperature stable; Wherein: the pulp bucket liquid level transmitter (D1) monitors the pulp bucket (A3) liquid level signal, and transmits the signal to the pulp bucket liquid level display controller (D2), the pulp bucket liquid level display controller (D2) displays the liquid level value and controls the actuator process water valve (C1) to adjust the valve opening; The weight recording transmitter (D3) of the soft manganese ore or coarse manganese dioxide belt scale (A2) monitors the weight signal of the soft manganese ore or coarse manganese dioxide belt scale (A2), and transmits the signal to the process water flow proportional display controller (D5), the process water flow transmitter (D4) monitors the process water flow signal, and also transmits the signal to the process water flow proportional display controller (D5), the process water flow proportional display controller (D5) receives the signals of the soft manganese ore or coarse manganese dioxide belt scale weight recording transmitter (D3) and the process water flow transmitter (D4), and performs proportional calculation according to the preset parameters and displays the calculation result, controls the running frequency of the soft manganese ore or coarse manganese dioxide belt scale (A2) motor according to the calculation result, and realizes the stable pulp control function; The secondary absorption tower bottom liquid level transmitter (D6) monitors the liquid level signal and transmits the signal to the secondary absorption tower bottom liquid level display controller (D7), the secondary absorption tower bottom liquid level display controller (D7) displays the liquid level value and controls the actuator slurry feeding regulating valve (C2) to adjust the valve opening, the secondary absorption tower bottom liquid level high and low alarm (D8) monitors the liquid level signal, and transmits 20mA high alarm signal and 4mA low alarm signal, the slurry feeding limiting valve (C3) receives the 24mA high alarm signal, and the electromagnetic valve is closed to cut off the air source of the slurry feeding regulating valve C2 to stop the feeding of the secondary absorption tower (A5), realizing the stable liquid level feeding and avoiding the control function of over-high liquid level of the secondary absorption tower (A5); The secondary absorption tower bottom liquid level high and low alarm (D8) monitors the liquid level signal, and transmits 20mA high alarm signal and 4mA low alarm signal, the primary absorption tower bottom liquid level transmitter (D9) monitors the liquid level signal and transmits the signal to the primary absorption tower bottom liquid level display controller (D10), the primary absorption tower bottom liquid level display controller (D10) displays the liquid level value and controls the actuator slurry bridging regulating valve (C4) to adjust the valve opening, the slurry bridging limiting valve (C5) receives the 4mA low alarm signal, and the electromagnetic valve is closed to cut off the air source of the slurry bridging regulating valve (C4) to stop the discharge of the secondary absorption tower (A5), realizing the stable liquid level discharge and avoiding the control function of over-low liquid level of the secondary absorption tower (A7) also, namely the feeding function of the primary absorption tower (A7).The primary absorption tower bottom liquid level high-low alarm (D11) monitors the liquid level signal and transmits 20mA high alarm signal and 4mA low alarm signal, the liquid sulfur flow transmitter (D12) monitors the liquid sulfur flow signal of the liquid sulfur pump (A14) and transmits the signal to the liquid sulfur discharge flow proportional display controller (D14), the discharge flow transmitter (D13) monitors the discharge flow of the discharge pipe (B9) and feeds back the discharge flow to the liquid sulfur discharge flow proportional display controller (D14), the liquid sulfur discharge flow proportional display controller (D14) receives the signals of the liquid sulfur flow transmitter (D12) and the discharge flow transmitter (D13) and carries out proportional calculation according to preset parameters and displays the calculation results, the discharge regulating valve (C6) is controlled according to the calculation results, the valve opening degree is adjusted to realize the liquid sulfur flow and discharge flow proportional discharge function, the discharge limiting valve (C7) cuts off the gas source of the discharge regulating valve (C6) to stop the discharge and avoid the liquid level of the primary absorption tower (A7) being too low after receiving the 4mA low alarm signal of the primary absorption tower bottom liquid level low alarm (D11); the molten sulfur tank (A13) liquid level transmitter (D15) monitors and transmits the liquid level signal to the molten sulfur tank (A13) liquid level display controller (D16), the liquid level display controller (D16) displays the molten sulfur tank (A13) liquid level value and controls the motor running frequency of the sulfur conveying belt (A12) to carry out molten sulfur feeding, the molten sulfur tank (A13) temperature controller (D17) monitors and displays the molten sulfur tank (A13) temperature and controls the steam regulating valve (C8), and the valve opening degree is adjusted to realize the molten sulfur temperature controllable function.

[0012] Compared with the prior art, the present application has the following beneficial effects: 1. The soft manganese ore or coarse manganese dioxide continuous leaching control system can realize continuous and stable leaching, and realizes continuous feeding and discharging of the ore slurry through multi-stage liquid level control and proportional adjustment.

[0013] 2. The soft manganese ore or coarse manganese dioxide continuous leaching control system realizes efficient use of resources, reduces energy consumption through waste heat power generation of the sulfur burning furnace, and reduces the tail gas desulfurization load through the secondary absorption tower series structure.

[0014] 3. The soft manganese ore or coarse manganese dioxide continuous leaching control system realizes automatic operation, the liquid level alarm and the pneumatic valve are linked, and faults such as tank overflow and idling are avoided, and manual intervention is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other characteristics and advantages of the present application will become clear from the following detailed description of exemplary embodiments thereof, with reference made to the attached drawings. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0016] Figure 1A general schematic diagram of a continuous leaching control system for pyrolusite or crude manganese dioxide according to the present invention; Figure 2 A pulp preparation control diagram of a continuous leaching control system for pyrolusite or crude manganese dioxide according to the present invention; Figure 3 A secondary absorption tower feed control diagram of a continuous leaching control system for pyrolusite or crude manganese dioxide according to the present invention; Figure 4 A primary absorption tower feed and discharge control diagram of a continuous leaching control system for pyrolusite or crude manganese dioxide according to the present invention; Figure 5 A molten sulfur tank control diagram of a continuous leaching control system for pyrolusite or crude manganese dioxide according to the present invention.

[0017] Reference: A1, soft manganite or coarse manganese dioxide powder bin; A2, soft manganite or coarse manganese dioxide belt scale; A3, pulp making barrel; A4, slurry delivery pump; A5, secondary absorption tower; A6, secondary circulation pump; A7, primary absorption tower; A8, primary circulation pump; A9, transfer barrel; A10, transfer pump; A11, sulfur hopper; A12, sulfur delivery belt; A13, sulfur melting tank; A14, liquid sulfur pump; A15, sulfur burning furnace; A16, boiler; A17, generator set; B1, soft manganite or coarse manganese dioxide raw material; B2, process water pipe; B3, slurry delivery pipe; B4, secondary absorption circulation pipe; B5, gas phase bridging pipe; B6, tail gas pipe; B7, slurry bridging pipe; B8, primary absorption circulation pipe; B9, discharge pipe; B10, transfer pipe; B11, sulfur raw material; B12, steam heating pipe; B13, condensed water pipe; B14, dry air pipe; B15, liquid sulfur injection pipe; B16, high temperature sulfur dioxide gas pipe; B17, low temperature sulfur dioxide gas pipe; C1, process water valve; C2, slurry feed regulating valve; C3, slurry feed limiting valve; C4, slurry bridging regulating valve; C5, slurry bridging limiting valve; C6, discharge regulating valve; C7, discharge limiting valve; C8, steam regulating valve; C9, auxiliary sampling valve; D1, pulp making barrel liquid level transducer; D2, pulp making barrel liquid level display controller; D3, soft manganite or coarse manganese dioxide belt scale weight recording transducer; D4, process water flow transducer; D5, process water flow proportional display controller; D6, secondary absorption tower bottom liquid level transducer; D7, secondary absorption tower bottom liquid level display controller; D8, secondary absorption tower bottom liquid level high-low alarm; D9, primary absorption tower bottom liquid level transducer; D10, primary absorption tower bottom liquid level display controller; D11, primary absorption tower bottom liquid level low alarm; D12, liquid sulfur flow transducer; D13, discharge flow transducer; D14, liquid sulfur discharge flow proportional display controller; D15, sulfur melting control mechanism in sulfur burning power generation device has sulfur melting tank liquid level transducer; D16, sulfur melting tank liquid level display controller; D17, sulfur melting tank temperature controller. DETAILED DESCRIPTION

[0018] Various exemplary embodiments of the present application will be described in detail with reference to the drawings. It should be noted that the relative arrangement of the components and steps set forth in the embodiments, numerical expressions, and numerical values are not limiting to the scope of the present application unless otherwise specifically stated. EMBODIMENT

[0019] A soft manganite or coarse manganese dioxide continuous leaching control system, comprising a leaching device, a sulfur burning power generation device, a control mechanism and a control valve, and a connecting pipeline. The leaching device comprises a soft manganese ore or coarse manganese dioxide powder bin A1, a soft manganese ore or coarse manganese dioxide belt scale A2, a pulp making barrel A3, a slurry conveying pump A4, a secondary absorption tower A5, a secondary circulating pump A6, a primary absorption tower A7, a primary circulating pump A8, a transfer barrel A9, and a transfer pump A10; wherein the soft manganese ore or coarse manganese dioxide powder bin A1 stores soft manganese ore or coarse manganese dioxide with qualified particle size and moisture, and the soft manganese ore or coarse manganese dioxide proportionally fed into the pulp making barrel A3 by the belt scale A2 and the process water pipe B2 is mixed with process water to form uniform slurry; the secondary absorption tower A5 and the primary absorption tower A7 are connected in series, the secondary absorption tower A5 reabsorbs the residual gas at the top of the primary absorption tower A7, and the utilization rate of sulfur dioxide is improved; the transfer barrel A9 is used for temporarily storing the slurry output by the primary absorption tower, and the transfer pump A10 is used for external delivery. The sulfur burning power generation device comprises a sulfur hopper A11, a sulfur conveying belt A12, a sulfur melting tank A13, a liquid sulfur pump A14, a sulfur burning furnace A15, a boiler A16, and a generator set A17; wherein the sulfur melting tank A13 melts the sulfur into liquid sulfur by steam heating, the sulfur burning furnace A15 burns the liquid sulfur with dry air to generate high-temperature sulfur dioxide, the boiler A16 recovers waste heat to generate power, and the generator set A17 generates power by using high-pressure steam from the boiler and discharges medium-pressure steam for use in the downstream. The control valve comprises a process water valve C1, a slurry feeding adjusting valve C2, a slurry feeding limiting valve C3, a slurry bridging adjusting valve C4, a slurry bridging limiting valve C5, an output adjusting valve C6, an output limiting valve C7, a steam adjusting valve C8, and an auxiliary sampling valve C9. The control mechanism comprises a pulp making barrel feeding proportion control mechanism, a secondary absorption tower feeding control mechanism, a primary absorption tower feeding control mechanism, a primary absorption tower output control mechanism, and a sulfur melting control mechanism in the sulfur burning power generation device; wherein: The pulp making barrel feeding proportion control mechanism comprises a pulp making barrel liquid level transmitter D1, a pulp making barrel liquid level display controller D2, a soft manganese ore or coarse manganese dioxide belt scale weight recording transmitter D3, a process water flow transmitter D4, and a process water flow proportion display controller D5; the secondary absorption tower feeding control mechanism comprises a secondary absorption tower bottom liquid level transmitter D6, a secondary absorption tower bottom liquid level display controller D7, and a secondary absorption tower bottom liquid level high-low alarm D8; the primary absorption tower feeding control mechanism comprises the secondary absorption tower bottom liquid level high-low alarm D8, a primary absorption tower bottom liquid level transmitter D9, and a primary absorption tower bottom liquid level display controller D10; the primary absorption tower output control mechanism comprises a primary absorption tower bottom liquid level low alarm D11, a liquid sulfur flow transmitter D12, an output flow transmitter D13, and a liquid sulfur output flow proportion display controller D14; and the sulfur melting control mechanism in the sulfur burning power generation device comprises a sulfur melting tank liquid level transmitter D15, a sulfur melting tank liquid level display controller D16, and a sulfur melting tank temperature controller D17. The connecting pipeline comprises: pyrolusite or crude manganese dioxide material B1, process water pipe B2, slurry conveying pipe B3, secondary absorption circulation pipe B4, gas phase bridging pipe B5, tail gas pipe B6, slurry bridging pipe B7, primary absorption circulation pipe B8, discharge pipe B9, transfer pipe B10; sulfur material B11, steam heating pipe B12, condensed water pipe B13, dry air pipe B14, liquid sulfur spraying pipe B15, high-temperature sulfur dioxide gas pipe B16, low-temperature sulfur dioxide gas pipe B17; The leaching device, wherein: the pyrolusite or crude manganese dioxide powder bin A1 is used for storing the pyrolusite or crude manganese dioxide with qualified particle size and moisture; the pyrolusite or crude manganese dioxide belt scale A2 is used for accurately metering the weight of the pyrolusite or crude manganese dioxide; the pulp making barrel A3 is used for stirring the pyrolusite or crude manganese dioxide with the formula weight and the process water with the formula volume to make a uniform slurry; the slurry conveying pump A4 is used for conveying the slurry of the slurry barrel to the secondary absorption tower A5; the primary absorption tower A7 is used for the first-stage absorption of the sulfur dioxide generated by the sulfur-burning power generation device by the pyrolusite slurry; the secondary absorption tower A5 is used for the reabsorption of the residual gas on the top of the primary absorption tower, and the primary absorption tower A7 and the secondary absorption tower A5 are connected in series; the primary circulation pump A8 is used for the circulation spraying and discharge pump of the slurry in the primary absorption tower; the secondary circulation pump A6 is used for the circulation spraying and discharge pump of the slurry in the secondary absorption tower A5; the transfer barrel A9 is used as a temporary storage barrel for the discharge of the primary absorption tower A7; and the transfer pump A10 is used for conveying the material in the transfer barrel to the outside of the control system. The sulfur-burning power generation device, wherein: the sulfur hopper A11 is used for storing the solid sulfur to be used; the sulfur conveying belt A12 is used for conveying the solid sulfur in the sulfur hopper A11 to the sulfur melting tank A13; the sulfur melting tank A13 is used for melting the solid sulfur into liquid sulfur by steam coil heating; the liquid sulfur pump A14 is used for pumping the liquid sulfur in the sulfur melting tank A13 into the sulfur-burning furnace A15; the sulfur-burning furnace A15 is used for generating sulfur dioxide by mixing and burning the liquid sulfur with dry air in a mixing combustion chamber; the boiler A16 is used for recovering the high-pressure steam generated by the sulfur-burning furnace A15; and the generator set A17 utilizes the high-pressure steam generated by the boiler A16 to drive the back pressure steam turbine to generate power and discharge the medium-pressure steam to the steam pipe network for use by the lower-level users. The connecting pipeline, wherein: the raw pyrolusite or coarse manganese dioxide B1 is transported into the control system from outside the control system; the process water pipeline B2 is used to connect the control system pulp barrel A3 with the process water pipeline network; the slurry conveying pipeline B3 is used to connect the control system pulp barrel A3 with the slurry conveying pump A4 and the secondary absorption tower A5; the secondary absorption circulating pipeline B4 connects the bottom of the secondary absorption tower A5 with the tower body, and is used for internal slurry circulation; the gas phase bridging pipeline B5 connects the gas phase at the top of the primary absorption tower A7 with the bottom of the secondary absorption tower A5 to form a series structure; the tail gas pipeline B6 connects the gas phase at the top of the secondary absorption tower A5 to a desulfurization device outside the control system for tail gas desulfurization treatment; the slurry bridging pipeline B7 connects the secondary absorption circulating pipeline B4 with the bottom of the primary absorption tower A7, and is used for transferring the slurry in the secondary absorption tower A5 to the primary absorption tower A7; the primary absorption circulating pipeline B8 connects the bottom of the primary absorption tower A7 with the tower body, and is used for internal slurry circulation; the discharge pipeline B9 connects the primary absorption circulating pipeline B8 with the transfer barrel A9, and is used for transferring the slurry in the primary absorption tower A7 to the transfer barrel A9; the transfer pipeline B10 is used to convey the material in the transfer barrel A9 to a process outside the control system; the sulfur feed B11 refers to loading solid sulfur into the sulfur hopper A11 through loading and unloading tools; the steam heating pipeline B12 is used to connect the heating coil in the molten sulfur tank A13 with the steam pipeline network; the condensed water pipeline B13 is used to connect the heating coil in the molten sulfur tank A13 with the condensed water pipeline network to discharge the condensed water in the heating coil; the dry air pipeline B14 is used to connect the dry air of the air drying system with the sulfur incinerator A15; the liquid sulfur spraying pipeline B15 connects the molten sulfur tank A13 with the liquid sulfur pump A14 to the sulfur incinerator A15, and is used for liquid sulfur conveying; the high-temperature sulfur dioxide gas pipeline B16 is used to connect the sulfur incinerator A15 with the boiler A16 to convey high-temperature sulfur dioxide gas; the low-temperature sulfur dioxide gas pipeline B17 connects the sulfur dioxide generated by the sulfur power generation device and subjected to cooling treatment with the leaching device, and is used for conveying sulfur dioxide gas; The control valves include: process water valve C1 installed on the process water pipe, valve position number LV0201 FC (meaning it is a pneumatic control valve that closes due to power failure); slurry feed control valve C2 installed on the slurry delivery pipe B3, valve position number LV0202FC (meaning it is a pneumatic control valve that closes due to power failure); slurry feed limiting valve C3 installed on the air supply line of slurry feed control valve C2, used to control the on / off of the air supply to slurry feed control valve C2, XV0203 FO (meaning it is a solenoid valve that opens due to power failure); slurry bridging control valve C4 installed on the slurry bridging pipe B7, valve position number LV0204 FC (meaning it is a pneumatic control valve that closes due to power failure); and slurry bridging limiting valve C5 installed on the air supply line of slurry bridging control valve C4, used to control the on / off of the air supply to slurry bridging control valve C4, XV0205 (meaning it is a pneumatic control valve that closes due to power failure). FO indicates a solenoid valve that opens upon power failure; discharge regulating valve C6 is installed on discharge pipe B9, valve number LV0206 FC indicates a pneumatic regulating valve that closes upon power failure; discharge limiting valve C7 is installed on the gas supply line of discharge regulating valve C6 to control the on / off of the gas supply to valve C6, XV0207 FO indicates a solenoid valve that opens upon power failure; steam regulating valve C8 is installed on steam heating pipe B12, valve number LV0101 FC indicates a pneumatic regulating valve that closes upon power failure; auxiliary sampling valve C9 is installed on the outlet pipe of low-temperature sulfur dioxide gas pipe B17 to collect gas samples and detect their sulfur dioxide concentration; The control mechanism is used for: Pulping ratio control: The level transmitter D1 and the flow ratio controller D5 are linked to adjust the ratio of soft manganese ore or crude manganese dioxide to water; Dynamic liquid level regulation: The secondary absorption tower liquid level transmitter D6 controls the feed through the regulating valve C2, and the high and low alarm D8 triggers the limiting valve C3 to prevent overflow; Sulfur combustion temperature control: Temperature controller D17 of molten sulfur tank A13 regulates steam valve C8 to maintain stable liquid sulfur temperature; Wherein: the pulp bucket A3 liquid level transmitter D1 monitors the pulp bucket A3 liquid level signal, and transmits the signal to the pulp bucket A3 liquid level display controller D2, the pulp bucket A3 liquid level display controller D2 displays the liquid level value and controls the actuator process water valve C1 to adjust the valve opening; The soft manganese ore or coarse manganese dioxide belt scale A2 weight recording transmitter D3 monitors the soft manganese ore or coarse manganese dioxide belt scale A2 weight signal, and transmits the signal to the process water flow proportional display controller D5, the process water flow transmitter D4 monitors the process water flow signal, and also transmits the signal to the process water flow proportional display controller D5, the process water flow proportional display controller D5 receives the soft manganese ore or coarse manganese dioxide belt scale weight recording transmitter D3, process water flow transmitter D4 signal and proportional calculation according to the preset parameters and display the calculation result, according to the calculation result control actuator soft manganese ore or coarse manganese dioxide belt scale A2 motor running frequency, realize stable pulp control function; The secondary absorption tower A5 bottom liquid level transmitter D6 monitors the liquid level signal and transmits the signal to the secondary absorption tower A5 bottom liquid level display controller D7, the controller D7 displays the liquid level value and controls the actuator slurry feeding regulating valve C2 to adjust the valve opening, the secondary absorption tower A5 bottom liquid level high and low alarm D8 monitors the liquid level signal, and transmits 20mA high alarm signal and 4mA low alarm signal, the slurry feeding limiting valve C3 receives its 24mA high alarm signal, and the electromagnetic valve is closed to cut off C2 gas source to stop the secondary absorption tower A5 feeding, realize the stable liquid level feeding of the secondary absorption tower A5 and avoid the control function of overhigh liquid level; The secondary absorption tower A5 bottom liquid level high and low alarm D8 monitors the liquid level signal, and transmits 20mA high alarm signal and 4mA low alarm signal, the primary absorption tower A7 bottom liquid level transmitter D9 monitors the liquid level signal and transmits the signal to the primary absorption tower A7 bottom liquid level display controller D10, the controller D10 displays the liquid level value and controls the actuator slurry bridging regulating valve C4 to adjust the valve opening, the slurry bridging limiting valve C5 receives its 4mA low alarm signal, and the electromagnetic valve is closed to cut off the slurry bridging regulating valve C4 gas source to stop the secondary absorption tower A5 discharging, realize the stable liquid level discharging of the secondary absorption tower A7 and avoid the control function of overlow liquid level, that is, the primary absorption tower A7 feeding function;The primary absorption tower A7 bottom liquid level high-low alarm D11 monitors the liquid level signal and transmits 20 mA high alarm signal and 4 mA low alarm signal, the liquid sulfur flow transmitter D12 monitors the liquid sulfur flow signal of the liquid sulfur pump A14 and transmits the signal to the liquid sulfur discharge flow proportional display controller D14, the discharge flow transmitter D13 monitors the discharge pipe B9 flow and feeds back the discharge flow to the liquid sulfur discharge flow proportional display controller D14, the liquid sulfur discharge flow proportional display controller D14 receives the liquid sulfur flow transmitter D12 and the discharge flow transmitter D13 signals and performs proportional calculation according to the preset parameters and displays the calculation result, and controls the actuator discharge regulating valve C6 according to the calculation result to realize the liquid sulfur flow and discharge flow proportional discharge function by adjusting the valve opening degree, and the discharge limiting valve C7 cuts off the gas source of the discharge regulating valve C6 to stop the discharge to avoid the liquid level of the primary absorption tower A7 being too low after receiving the 4 mA low alarm signal of the primary absorption tower bottom liquid level low alarm D11; the molten sulfur tank A13 liquid level transmitter D15 monitors and transmits the liquid level signal to the molten sulfur tank A13 liquid level display controller D16, the controller D16 displays the molten sulfur tank A13 liquid level value and controls the actuator sulfur conveying belt A12 motor operating frequency to perform molten sulfur feeding, and the molten sulfur tank A13 temperature controller D17 monitors and displays the molten sulfur tank A13 temperature and controls the actuator steam regulating valve C8 to realize the molten sulfur temperature controllable function by adjusting the valve opening degree; Specifically: 1. Referring to Figures 1-4 As shown in the figure, the ore pulp preparation and conveying control mechanism, the soft manganese ore or coarse manganese dioxide is metered by the belt scale A2 and then enters the pulp making barrel A3, the process water valve C1 injects water according to the proportion of the weight of the soft manganese ore or coarse manganese dioxide, and the liquid level transmitter D1 feeds back in real time, forming uniform ore pulp; the ore pulp conveying pump A4 pumps the ore pulp into the secondary absorption tower A5, the liquid level controller D7 controls the flow by adjusting the valve C2, and the limiting valve C3 cuts off the gas source to stop feeding when the liquid level is out of limit; 2. Referring to Figures 1-4 As shown in the figure, the sulfur dioxide absorption and leaching control mechanism, the high-temperature sulfur dioxide generated by the sulfur incinerator A15 is cooled by the boiler A16 and then enters the primary absorption tower A7 through the low-temperature sulfur dioxide gas pipe B17 to react with the ore pulp to generate manganese sulfate; the remaining gas that is not absorbed enters the secondary absorption tower A5 for secondary absorption through the gas phase bridge pipe B5, and the tail gas is discharged after being treated by the desulfurization device; 3. Referring to Figures 1-5 As shown in the figure, the liquid sulfur and discharge control mechanism, the liquid level of the molten sulfur tank A13 is adjusted by the frequency of the sulfur conveying belt A12, and the temperature controller D17 maintains the liquid sulfur temperature by the steam valve C8; the primary absorption tower A7 discharge flow is dynamically adjusted by the liquid sulfur discharge flow proportional display controller D14 according to the liquid sulfur flow D12 to adjust the discharge valve C6, and the limiting valve C7 cuts off the discharge when the liquid level is too low; Specific control; liquid sulfur control first stage absorption tower A7 stable discharge, first stage absorption tower A7 bottom liquid level alarm D11 monitoring liquid level signal, and transmission 20mA high alarm signal and 4mA low alarm signal, liquid sulfur flow transmitter D12 monitoring liquid sulfur pump A14 transport liquid sulfur flow signal, and signal transmission to liquid sulfur discharge flow proportional display controller D14, discharge flow transmitter D13 monitoring the discharge pipe flow, and discharge flow feedback to liquid sulfur discharge flow proportional display controller D14, liquid sulfur discharge flow proportional display controller (D14) receives liquid sulfur flow transmitter D12, discharge flow transmitter D13 signal and according to the preset parameters for proportional calculation and display calculation results, according to the calculation results control actuator discharge regulating valve C6, regulating valve opening degree realizes liquid sulfur flow and discharge flow proportional discharge function, discharge limiting valve C7 receives the first stage absorption tower bottom liquid level low alarm D11 4mA low signal after cutting off the discharge regulating valve C6 gas source to stop discharging to avoid the first stage absorption tower A7 liquid level too low.

[0020] The continuous leaching control system of soft manganese ore or coarse manganese dioxide can realize a manganese continuous leaching rate of more than 90%, a sulfur dioxide absorption rate of more than 98%, waste heat power generation meeting 50% of the energy consumption demand of the device, and a tail gas desulfurization cost reduction of 60%, and is suitable for large-scale industrial production.

[0021] Many modifications and variations will be apparent to those skilled in the art. The embodiments described herein are presented by way of example only and are not intended to limit the scope of the disclosure. The various embodiments presented are intended to be combined and interchanged in any order possible. The choice of words in the specification is intended to best explain the principles of the various embodiments, the practical application, or technical improvement over the prior art, or to enable others skilled in the art to understand the various embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A continuous leaching control system for pyrolusite or crude manganese dioxide, characterized in that: Includes leaching equipment, sulfur incineration power generation equipment, control mechanisms and control valves, and connecting pipelines; The leaching device includes: a pyrolusite or crude manganese dioxide powder silo (A1), a pyrolusite or crude manganese dioxide belt scale (A2), a slurry preparation tank (A3), a slurry transfer pump (A4), a secondary absorption tower (A5), a secondary circulation pump (A6), a primary absorption tower (A7), a primary circulation pump (A8), a transfer tank (A9), and a transfer pump (A10). The pyrolusite or crude manganese dioxide powder silo (A1) stores pyrolusite or crude manganese dioxide with acceptable particle size and moisture content. In the slurry preparation tank (A3), pyrolusite or crude manganese dioxide is added in proportion by the belt scale (A2) and process water pipe (B2) with process water to form a homogeneous slurry. The secondary absorption tower (A5) is connected in series with the primary absorption tower (A7), and the secondary absorption tower (A5) reabsorbs the residual gas at the top of the primary absorption tower (A7). The transfer tank (A9) is used to temporarily store the slurry output from the primary absorption tower and is then pumped out via the transfer pump (A10). The sulfur-burning power generation unit includes: a sulfur hopper (A11), a sulfur conveyor belt (A12), a sulfur melting tank (A13), a liquid sulfur pump (A14), a sulfur incinerator (A15), a boiler (A16), and a generator set (A17); wherein, the sulfur melting tank (A13) melts sulfur into liquid sulfur by steam heating, the sulfur incinerator (A15) burns the liquid sulfur with dry air to generate high-temperature sulfur dioxide, the boiler (A16) recovers the waste heat to generate electricity, and the generator set (A17) generates electricity using the high-pressure steam from the boiler and discharges medium-pressure steam for downstream use; The control mechanisms include: a pulping tank feed ratio control mechanism, a secondary absorption tower feed control mechanism, a primary absorption tower feed control mechanism, a primary absorption tower discharge control mechanism, and a sulfur melting control mechanism in the sulfur combustion power generation unit; wherein: The feed proportioning control mechanism for the pulping tank includes a pulping tank level transmitter (D1), a pulping tank level display controller (D2), a weight recording transmitter for the soft manganese ore or crude manganese dioxide belt scale (D3), a process water flow transmitter (D4), and a process water flow proportioning display controller (D5); the feed control mechanism for the secondary absorption tower includes a secondary absorption tower bottom level transmitter (D6), a secondary absorption tower bottom level display controller (D7), and a secondary absorption tower bottom level high / low alarm (D8); the feed control mechanism for the primary absorption tower includes the secondary absorption tower bottom level... The system includes a low / high level alarm (D8), a liquid level transmitter at the bottom of the primary absorption tower (D9), and a liquid level display controller at the bottom of the primary absorption tower (D10); the discharge control mechanism of the primary absorption tower includes a low liquid level alarm at the bottom of the primary absorption tower (D11), a liquid sulfur flow transmitter (D12), a discharge flow transmitter (D13), and a liquid sulfur discharge flow ratio display controller (D14); the sulfur melting control mechanism in the sulfur combustion power generation unit includes a sulfur melting tank level transmitter (D15), a sulfur melting tank level display controller (D16), and a sulfur melting tank temperature controller (D17). The control valves include: process water valve (C1), slurry feed regulating valve (C2), slurry feed limiting valve (C3), slurry bridging regulating valve (C4), slurry bridging limiting valve (C5), discharge regulating valve (C6), discharge limiting valve (C7), steam regulating valve (C8), and auxiliary sampling valve (C9). The connecting pipelines include: soft manganese ore or crude manganese dioxide feed (B1), process water pipe (B2), slurry conveying pipe (B3), secondary absorption circulation pipe (B4), gas phase bridge pipe (B5), tail gas pipe (B6), slurry bridge pipe (B7), primary absorption circulation pipe (B8), discharge pipe (B9), transfer pipe (B10); sulfur feed (B11), steam heating pipe (B12), condensate pipe (B13), dry air pipe (B14), liquid sulfur spraying pipe (B15), high temperature sulfur dioxide gas pipe (B16), and low temperature sulfur dioxide gas pipe (B17).

2. The continuous leaching control system for pyrolusite or crude manganese dioxide according to claim 1, characterized in that: The leaching apparatus includes: a pyrolusite or crude manganese dioxide powder silo (A1) for storing pyrolusite or crude manganese dioxide with acceptable particle size and moisture content; a pyrolusite or crude manganese dioxide belt scale (A2) for accurately measuring the weight of the pyrolusite or crude manganese dioxide; a slurry mixing tank (A3) for mixing the prescribed weight of pyrolusite or crude manganese dioxide with the prescribed volume of process water to form a uniform slurry; a slurry transfer pump (A4) for conveying the slurry from the tank to the secondary absorption tower; and a primary absorption tower (A7) for the pyrolusite slurry to the sulfur-fired power generation unit. The generated sulfur dioxide undergoes primary absorption; the secondary absorption tower (A5) is used for the reabsorption of residual gas at the top of the primary absorption tower, and the primary absorption tower (A7) and the secondary absorption tower (A5) are connected in series; the primary circulation pump (A8) is used for the circulation spraying and discharge pumping of the slurry in the primary absorption tower; the secondary circulation pump (A6) serves as the circulation spraying and discharge pumping of the slurry in the secondary absorption tower; the transfer tank (A9) serves as a temporary storage tank for the discharge from the primary absorption tower; and the transfer pump (A10) is used to transport the material in the transfer tank to outside this control system.

3. The continuous leaching control system for pyrolusite or crude manganese dioxide according to claim 1, characterized in that: The sulfur-fired power generation device comprises: a sulfur hopper (A11) for storing solid sulfur for later use; a sulfur conveyor belt (A12) for conveying the solid sulfur in the sulfur hopper to a sulfur melting tank (A13); a sulfur melting tank (A13) for melting the solid sulfur into liquid sulfur by heating with steam coils; a liquid sulfur pump (A14) for pumping the liquid sulfur in the sulfur melting tank into a sulfur-fired furnace (A15); a sulfur-fired furnace (A15) for mixing the liquid sulfur with dry air in a combustion chamber to generate sulfur dioxide; a boiler (A16) for recovering the preheated high-pressure steam generated by the sulfur-fired furnace (A15); and a generator set (A17) for using the high-pressure steam generated by the boiler to drive a back-pressure turbine to generate electricity and discharge medium-pressure steam to the steam network for use by downstream users.

4. The continuous leaching control system for pyrolusite or crude manganese dioxide according to claim 1, characterized in that: The connecting pipelines include: a soft manganese ore or crude manganese dioxide feedstock (B1) transported from an external soft manganese ore or crude manganese dioxide unit into the control system; a process water pipe (B2) connecting the control system's slurry tank (A3) to the process water network; a slurry conveying pipe (B3) connecting the control system's slurry tank (A3) to the slurry conveying pump and the secondary absorption tower (A5); a secondary absorption circulation pipe (B4) connecting the bottom of the secondary absorption tower to the tower body for internal slurry circulation; and a gas phase bridge. Connector (B5) connects the top gas phase of the primary absorber to the bottom of the secondary absorber, forming a series structure; tail gas pipe (B6) connects the top gas phase of the secondary absorber to a desulfurization unit outside this control system for tail gas desulfurization treatment; slurry bridge connector (B7) connects the secondary absorption circulation pipe (B4) to the bottom of the primary absorber, used for transferring slurry from the secondary absorber to the primary absorber (A7); primary absorption circulation pipe (B8) connects the bottom of the primary absorber to its body, used for internal slurry circulation; discharge pipe... (B9) Connects the primary absorption circulation pipe (B8) to the transfer tank (A9) for transferring the slurry from the primary absorption tower to the transfer tank (A9); the transfer pipe (B10) is used to transport the material from the transfer tank to the process outside this control system; sulfur feed (B11) refers to the solid sulfur being loaded into the sulfur hopper (A11) using loading and unloading tools; the steam heating pipe (B12) is used to connect the heating coil in the sulfur melting tank to the steam network; the condensate pipe (B13) is used to connect the heating coil in the sulfur melting tank to the condensate network. Pipeline connection to drain condensate from heating coils; Dry air pipe (B14) connects the dry air from the air drying system to the sulfur incinerator; Liquid sulfur injection pipe (B15) connects the molten sulfur tank and liquid sulfur pump to the sulfur incinerator for liquid sulfur transport; High-temperature sulfur dioxide gas pipe (B16) connects the sulfur incinerator to the boiler for transporting high-temperature sulfur dioxide gas; Low-temperature sulfur dioxide gas pipe (B17) connects the sulfur dioxide generated by the sulfur incineration power generation unit and cooled to the leaching unit for transporting sulfur dioxide gas.

5. The continuous leaching control system for pyrolusite or crude manganese dioxide according to claim 1, characterized in that: The control valves include: a process water valve (C1) installed on the process water pipe, valve number LV0201 (FC), indicating a pneumatic control valve that closes due to power failure; a slurry feed control valve (C2) installed on the slurry delivery pipe, valve number LV0202 (FC), indicating a pneumatic control valve that closes due to power failure; a slurry feed limiting valve (C3) installed on the air supply line of the slurry feed control valve (C2), used to control the on / off of the air supply to the slurry feed control valve (C2), XV0203 (FO), indicating a solenoid valve that opens due to power failure; a slurry bridging control valve (C4) installed on the slurry bridging pipe, valve number LV0204 (FC), indicating a pneumatic control valve that closes due to power failure; and a slurry bridging limiting valve (C5) installed on the air supply line of the slurry bridging control valve (C4). Online, the gas supply to the slurry bridging regulating valve (C4) is controlled by XV0205 (FO), which is a solenoid valve that opens in case of energy failure. The discharge regulating valve (C6) is installed on the discharge pipe, with valve number LV0206 (FC), which is a pneumatic regulating valve that closes in case of energy failure. The discharge limiting valve (C7) is installed on the gas supply line of the discharge regulating valve (C6) to control the gas supply to the discharge regulating valve (C6), with XV0207 (FO), which is a solenoid valve that opens in case of energy failure. The steam regulating valve (C8) is installed on the steam heating pipe, with valve number LV0101 (FC), which is a pneumatic regulating valve that closes in case of energy failure. The auxiliary sampling valve (C9) is installed on the outlet pipe of the low-temperature sulfur dioxide gas pipe (B17) to collect gas samples and detect their sulfur dioxide concentration.

6. The continuous leaching control system for pyrolusite or crude manganese dioxide according to claim 1, characterized in that: The control mechanism is used for: Pulping ratio control: The liquid level transmitter (D1) of the pulping tank and the process water flow ratio controller (D5) are linked to adjust the ratio of soft manganese ore or crude manganese dioxide to water; Dynamic liquid level regulation: The liquid level transmitter (D6) at the bottom of the secondary absorption tower receives the liquid level signal at the bottom of the secondary absorption tower (A5) and controls the feed of the slurry through the feed regulating valve (C2). The high and low alarm (D8) triggers the feed limiting valve (C3) to prevent overflow. Sulfur combustion temperature control: The sulfur melting tank temperature controller (D17) controls the steam regulating valve (C8) to maintain a stable liquid sulfur temperature; Specifically: the pulping tank level transmitter (D1) monitors the pulping tank level signal and transmits the signal to the pulping tank level display controller (D2). The pulping tank level display controller (D2) displays the level value and controls the actuator process water valve (C1) to adjust the valve opening; the soft manganese ore or crude manganese dioxide belt scale weight recording transmitter (D3) monitors the soft manganese ore or crude manganese dioxide belt scale weight signal and transmits the signal to the process water flow proportional display controller (D5); the process water flow transmitter (D4) monitors the process water flow signal and also transmits the signal to the process water flow proportional display controller. The display controller (D5) receives signals from the weight recording transmitter (D3) of the soft manganese ore or crude manganese dioxide belt scale and the process water flow transmitter (D4), performs proportional calculations based on preset parameters, and displays the calculation results. Based on the calculation results, it controls the operating frequency of the actuator motor of the soft manganese ore or crude manganese dioxide belt scale (A2) to achieve stable pulping control. The secondary absorber bottom level transmitter (D6) monitors the liquid level signal and transmits it to the secondary absorber bottom level display controller (D7), which displays the liquid level. The actuator controls the slurry feed regulating valve (C2) to adjust the valve opening. The secondary absorber bottom liquid level high / low alarm (D8) monitors the liquid level signal and transmits a 20mA high alarm signal and a 4mA low alarm signal. After receiving its 24mA high alarm signal, the slurry feed limiting valve (C3) closes the solenoid valve to cut off the slurry feed regulating valve (C2) and the air source to stop the secondary absorber feed. This achieves the function of stabilizing the liquid level feed of the secondary absorber (A5) and preventing excessive liquid level overflow. The secondary absorber bottom liquid level high / low alarm (D8) monitors the liquid level signal and transmits a 20mA high alarm signal and a 4mA low alarm signal. A 4mA low alarm signal is received. The liquid level transmitter (D9) at the bottom of the primary absorption tower monitors the liquid level signal and transmits it to the liquid level display controller (D10) at the bottom of the primary absorption tower. The liquid level display controller (D10) displays the liquid level value and controls the actuator slurry bridging regulating valve (C4) to adjust the valve opening. After receiving the 4mA low alarm signal, the solenoid valve of the slurry bridging limiting valve (C5) closes and cuts off the gas source of the slurry bridging regulating valve (C4) to stop the discharge of the secondary absorption tower (A5). This achieves the function of stabilizing the liquid level of the secondary absorption tower (A5) and preventing the idling due to excessively low liquid level.The high / low level alarm (D11) at the bottom of the primary absorption tower monitors the liquid level signal and transmits a 20mA high alarm signal and a 4mA low alarm signal. The liquid sulfur flow transmitter (D12) monitors the liquid sulfur flow signal delivered by the liquid sulfur pump (A14) and transmits the signal to the liquid sulfur discharge flow proportional display controller (D14). The discharge flow transmitter (D13) monitors the flow in the discharge pipe (B9) and feeds back the discharge flow to the liquid sulfur discharge flow proportional display controller (D14). The liquid sulfur discharge flow proportional display controller (D14) receives the signals from the liquid sulfur flow transmitter (D12) and the discharge flow transmitter (D13), performs proportional calculations according to preset parameters, displays the calculation results, and controls the actuator to adjust the discharge flow based on the calculation results. The regulating valve (C6) adjusts the valve opening to achieve the function of proportional discharge of liquid sulfur flow and discharge flow. The discharge limiting valve (C7), upon receiving a 4mA low-level alarm signal from the low-level alarm device (D11) at the bottom of the primary absorption tower, cuts off the gas supply to the discharge regulating valve (C6) to stop discharge and prevent the liquid level in the primary absorption tower from becoming too low. The molten sulfur tank level transmitter (D15) monitors and transmits the liquid level signal to the molten sulfur tank level display controller (D16). The molten sulfur tank level display controller (D16) displays the molten sulfur tank level value and controls the operating frequency of the sulfur conveyor motor to feed molten sulfur. The molten sulfur tank temperature controller (D17) monitors and displays the molten sulfur tank temperature and controls the steam regulating valve (C8) to adjust the valve opening, achieving controllable molten sulfur temperature.

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