A method for producing metallurgical lime using high-pulverized limestone

Abstract

The application discloses a method for producing metallurgical lime by using high-powdered limestone, and relates to the field of limestone calcination, and comprises the following specific steps: step one, limestone screening and drying; step two, preheating, high-powdered limestone in a rotary kiln is preheated in a preheating chamber of a preheater through a feeding channel, and the preheating chamber preheats the high-powdered limestone to 900±50 DEG C; step three, the preheated high-powdered limestone is calcined in the rotary kiln; and step four, the calcined high-powdered limestone is cooled in a vertical cooler, wherein temperature sensors are installed at air inlets and air outlets, and a temperature sensor is additionally arranged in the preheating chamber; data detected by the temperature sensors are transmitted to a database of a preheating chamber controller, so that the influence of oxygen inflow and outflow and disturbance in the preheating process is considered, and the accurate control of the preheating of the high-powdered limestone in the preheating chamber is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of limestone calcination, in particular to a method for producing metallurgical lime using high-pulverized limestone. BACKGROUND

[0002] The process of high-temperature calcination of limestone needs to be carried out at a specific temperature. The melting point of limestone is 1140 degrees, and exceeding this temperature will cause it to melt or paste. During the calcination process, limestone is converted into calcium oxide, which is quicklime. This material has a wide range of applications in building materials, road maintenance, etc., and has high added value and market competitiveness.

[0003] According to CN116375364A-A method for producing metallurgical lime using high-pulverized limestone, wherein it is recorded that "step one: high-pulverized limestone with a particle size of 20-40mm is screened by a feeding vibrating screen and then enters a rotary kiln high-position stock bin for mixing; step two: high-pulverized limestone in the rotary kiln high-position stock bin enters a vertical preheater preheating chamber through an auxiliary discharge pipe, and the high-pulverized limestone is preheated to 900±50℃ in the vertical preheater preheating chamber; step three: the preheated high-pulverized limestone enters a rotary kiln for calcination through a transfer chute; the rotary kiln uses coke oven gas, the temperature is controlled at 1050±50℃, the pressure is 13-17kPa, and the rotary speed of the rotary kiln is controlled at 0.8-1.2r / min; step four: after the high-pulverized limestone is calcined into metallurgical lime in the rotary kiln, it enters a vertical cooler for cooling; after being cooled by multiple points of the vertical cooler, the lime temperature is reduced to below 130℃ and is discharged by a vibrating discharger, and the calcination is completed", it can be known from the content that the whole limestone in the calcination process does not have a series of intelligent control processes, and especially in the preheating process, due to a series of operations such as feeding, pushing and air inletting, the preheating effect of the limestone will be affected, and if reliable control is not performed, not only the preheating will be insufficient, but also serious energy waste will be caused.

[0004] In view of the above, a method for producing metallurgical lime using high-pulverized limestone is designed. SUMMARY

[0005] The present application provides a method for producing metallurgical lime using high-pulverized limestone to overcome the above-mentioned deficiencies.

[0006] The present application achieves the above-mentioned purposes through the following technical solutions:

[0007] A method for producing metallurgical lime using high-pulverized limestone, comprising the following specific steps:

[0008] Step one: limestone screening and drying, first, the limestone is screened, the high-pulverized limestone is screened by a vibrating screen, and then after low-temperature drying, it enters a rotary kiln;

[0009] Step two: preheat, high-powdered limestone in the rotary kiln is put into the preheating chamber of the preheater through the feeding channel for preheating, and the preheating chamber preheats the high-powdered limestone to 900±50℃;

[0010] Step three: the preheated high-powdered limestone is put into the rotary kiln for calcination;

[0011] Step four: after the high-powdered limestone is calcined, it is put into the vertical cooler for cooling;

[0012] Specific steps of step two are as follows:

[0013] S21, preheat the preheating chamber, and control the temperature at 900±50℃;

[0014] S22, inject high-powdered limestone through the feeding channel, and control the density of the high-powdered limestone in the preheating chamber at 1.5 tons / m 3 ;

[0015] S23, start preheating the high-powdered limestone, and pass in oxygen to ensure sufficient combustion and heating inside the preheating chamber;

[0016] S24, push the high-powdered limestone with the comprehensive preheating set value out through the pushing channel and the pushing plate;

[0017] S25, a controller is arranged on one side of the preheating chamber, which controls the feeding and discharging, and controls the oxygen in and out, so that the high-powdered limestone quickly reaches the comprehensive preheating set value, and the high-powdered limestone in the preheating chamber is preheated efficiently.

[0018] As a preferred, in the S24 step, the high-powdered limestone is pushed out by the pushing plate.

[0019] As a preferred, the specific calculation formula of the comprehensive preheating set value is as follows:

[0020]

[0021] Wherein, YrZ represents the comprehensive preheating set value, WdZ represents the high-temperature heating preheating set value, FxZ represents the stacking gap preheating set value, μ1, μ2, μ3, μ4 respectively represent the high-temperature heating adjustment coefficient, the stacking gap adjustment coefficient, the cooperative adjustment coefficient and the preheating coupling adjustment coefficient, and Ψ represents the smoothing coefficient.

[0022] As a preferred, the specific calculation formula of the high-temperature heating preheating set value is as follows:

[0023]

[0024] Wherein, WdZ represents the high-temperature heating preheating setting value, CqZ represents the oxygen outflow preheating setting value, JqZ represents the oxygen inflow preheating setting value, TlZ represents the pushing material preheating setting value, JlZ represents the feeding material preheating setting value, δ1 and δ2 represent the oxygen inflow and outflow influence coefficient and the stacking material inflow and outflow influence coefficient respectively, and β represents the oxygen adjustment factor in the preheating chamber.

[0025] Preferably, the oxygen outflow preheating setting value, the oxygen inflow preheating setting value, the pushing material preheating setting value and the feeding material preheating setting value, the oxygen inflow and outflow influence coefficient and the stacking material inflow and outflow influence coefficient are obtained as follows:

[0026] Temperature sensors are installed at the inlet and the outlet, and a temperature sensor is additionally installed in the preheating chamber, and the data detected by the temperature sensors are transmitted to the database of the preheating chamber controller, the temperature sensor measurement data at the inlet are comprehensively analyzed to obtain the oxygen inflow preheating setting value, the temperature sensor measurement data at the outlet are comprehensively analyzed to obtain the oxygen outflow preheating setting value, and the temperature sensor measurement data in the preheating chamber are comprehensively analyzed to obtain the oxygen inflow and outflow influence coefficient.

[0027] Flow sensors are installed at the feeding channel and the pushing material channel, and a pressure sensor is additionally installed in the preheating chamber, and the data detected by the flow sensors and the pressure sensor are transmitted to the database of the preheating chamber controller, the flow sensor measurement data at the feeding channel are comprehensively analyzed to obtain the feeding material preheating setting value, the flow sensor measurement data at the pushing material channel are comprehensively analyzed to obtain the pushing material preheating setting value, and the pressure sensor measurement data are comprehensively analyzed to obtain the stacking material inflow and outflow influence coefficient.

[0028] Preferably, the specific calculation formula of the stacking material gap preheating setting value is as follows:

[0029]

[0030] Wherein, FxZ represents the stacking material gap preheating setting value, JfZ represents the feeding material gap preheating setting value, TfZ represents the pushing material gap preheating setting value, λ1, λ2 and λ3 represent the feeding material gap adjustment coefficient, the pushing material gap adjustment coefficient and the superposition adjustment coefficient respectively, and α1 and α2 represent the feeding material gap preheating action coefficient and the pushing material gap preheating action coefficient respectively.

[0031] Preferably, the feeding material gap preheating setting value, the pushing material gap preheating setting value, the feeding material gap adjustment coefficient, the pushing material gap adjustment coefficient and the superposition adjustment coefficient, and the feeding material gap preheating action coefficient and the pushing material gap preheating action coefficient are obtained as follows:

[0032] Pressure sensors are installed at the feeding channel and the pushing channel, the feeding at the feeding channel is in the way of small amount and multiple times, the pushing at the pushing channel is in the way of fixed times, pressure sensors are arranged at the upper half area, the middle area and the lower half area of the high-powdered limestone in the preheating chamber, the data of the pressure sensors are transmitted to the database of the preheating chamber controller, the feeding gap preheating setting value is obtained through the comprehensive analysis of the values of the pressure sensors at the feeding channel, the pushing gap preheating setting value is obtained through the comprehensive analysis of the values of the pressure sensors at the pushing channel, the feeding gap adjustment coefficient is obtained through the comprehensive analysis of the values of the pressure sensors at the upper half area, the middle area and the lower half area of the high-powdered limestone in the preheating chamber, the pushing gap adjustment coefficient and the superposition adjustment coefficient are obtained, the feeding gap preheating action coefficient and the pushing gap preheating action coefficient are obtained through the comprehensive analysis of the feeding speed of the feeding channel and the pushing speed of the pushing channel.

[0033] Preferably, in step four, the high-powdered limestone is discharged after being cooled to 130 DEG C in the vertical cooler.

[0034] The method for producing metallurgical lime by using high-powdered limestone has the following advantages:

[0035] 1. Temperature sensors are installed at the air inlet and the air outlet, and a temperature sensor is additionally arranged in the preheating chamber, the data detected by the temperature sensors are transmitted to the database of the preheating chamber controller, the oxygen inlet preheating setting value is obtained through the comprehensive analysis of the measurement data of the temperature sensor at the air inlet, the oxygen outlet preheating setting value is obtained through the comprehensive analysis of the measurement data of the temperature sensor at the air outlet, the oxygen inlet and outlet influence coefficient is obtained through the comprehensive analysis of the measurement data of the temperature sensor additionally arranged in the preheating chamber, so that the high-temperature heating preheating setting value is calculated quantitatively, the effects and disturbance of the oxygen inlet and outlet in the preheating process are considered, and the accurate control of the preheating of the high-powdered limestone in the preheating chamber is improved;

[0036] 2. Pressure sensors are installed at both the feeding channel and the pushing channel. The feeding channel feeds material in small, frequent increments, while the pushing channel discharges material in fixed increments. Pressure sensors are located in the upper, middle, and lower sections of the preheating chamber, specifically in the high-powder limestone area. Data from these sensors is transmitted to the preheating chamber controller's database. The preheating setpoint for the feeding gap is obtained through comprehensive analysis of the pressure sensor data from the feeding channel, and the preheating setpoint for the pushing gap is obtained through comprehensive analysis of the pressure sensor data from the pushing channel. Pressure sensors are installed in the upper, middle, and lower halves of the preheating chamber containing highly pulverized limestone. Numerical analysis yields the feed gap adjustment coefficient, pusher gap adjustment coefficient, and superimposed adjustment coefficient. Based on the feed speed of the feed channel and the pusher speed of the pusher channel, the preheating effect coefficients of the feed gap and pusher gap are obtained. This allows for consideration of the disturbances within the preheating chamber caused by feeding and pushing, improving the precise control of the preheating of the highly pulverized limestone and enhancing energy utilization. Attached Figure Description

[0037] The present invention will be described by way of example and with reference to the accompanying drawings, wherein:

[0038] Figure 1 This is a flowchart illustrating the method steps of the present invention. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0040] like Figure 1 As shown, a method for producing metallurgical lime using highly pulverized limestone includes the following specific steps:

[0041] Step 1: Limestone screening and drying. First, the limestone is screened. The highly pulverized limestone is screened by vibrating a screen, and then dried at low temperature before entering the rotary kiln.

[0042] Step 2: Preheating. The highly pulverized limestone in the rotary kiln is fed into the preheating chamber of the preheater through the feed channel for preheating. The preheating chamber preheats the highly pulverized limestone to 900±50℃.

[0043] Step 3: The preheated highly pulverized limestone is then calcined in a rotary kiln;

[0044] Step 4: After calcination, the highly pulverized limestone is cooled in a vertical cooler;

[0045] The specific steps of step two are as follows:

[0046] S21, preheat the preheating chamber, and the temperature is controlled at 900±50℃;

[0047] S22, inject high-powdered limestone through the feeding channel, and the density of the high-powdered limestone in the preheating chamber is controlled at 1.5 tons / m 3 ;

[0048] S23, start preheating the high-powdered limestone, and oxygen is introduced to ensure sufficient combustion and heating inside the preheating chamber;

[0049] S24, push the high-powdered limestone with the comprehensive preheating set value out through the pushing channel and the pushing plate;

[0050] S25, the preheating chamber is provided with a controller, which controls the feeding and discharging, and controls the oxygen in and out, so that the high-powdered limestone quickly reaches the comprehensive preheating set value, and the high-powdered limestone in the preheating chamber is efficiently preheated.

[0051] Specifically, in the S24 step, the high-powdered limestone is pushed out by the pushing plate.

[0052] Specifically, the specific calculation formula of the comprehensive preheating set value is as follows:

[0053]

[0054] Wherein, YrZ represents the comprehensive preheating set value, WdZ represents the high-temperature heating preheating set value, FxZ represents the stacking gap preheating set value, μ1, μ2, μ3, μ4 respectively represent the high-temperature heating adjustment coefficient, the stacking gap adjustment coefficient, the cooperative adjustment coefficient and the preheating coupling adjustment coefficient, and Ψ represents the smoothing coefficient.

[0055] According to long-term statistical calculation, the values of μ1, μ2, μ3, μ4 are 3.0, 2.0, 1.5, 0.01, and 7.0, respectively;

[0056] Then YrZ represents the comprehensive preheating set value, WdZ represents the high-temperature heating preheating set value, and FxZ represents the relationship between the stacking gap preheating set value, as shown in Table 1 below:

[0057] Table 1, examples of comprehensive preheating set values of high-powdered limestone in the preheating chamber

[0058]

[0059] From table 1, it can be known that the increase of high temperature heating preheating setting value will increase the comprehensive preheating setting value, that is, the efficiency of oxygen injection is improved, and the comprehensive preheating effect is increased; the increase of the preheating setting value of the stacking gap will decrease the comprehensive preheating setting value, that is, the stacking gap is increased, which accelerates the preheating of the stack, improves the comprehensive preheating effect, and through the threshold setting of the comprehensive preheating setting value, when the threshold value is reached, the material can be pushed, and then the parameters in the synchronous preheating chamber change, and then re-enter the preheating calculation, so as to repeat, which not only can realize accurate preheating setting, but also improves the energy utilization rate.

[0060] Specifically, the specific calculation formula of the high temperature heating preheating setting value is as follows:

[0061]

[0062] Wherein, WdZ represents the high temperature heating preheating setting value, CqZ represents the oxygen out-gas preheating setting value, JqZ represents the oxygen in-gas preheating setting value, TlZ represents the pushing material preheating setting value, JlZ represents the in-feeding preheating setting value, δ1 and δ2 respectively represent oxygen in-out influence coefficient and stacking in-out influence coefficient, and β represents the oxygen adjustment factor in the preheating chamber.

[0063] According to long-term statistical calculation, the values of δ1 and δ2, and β are 1.0, 0.1 and 5.0 respectively.

[0064] The relationship between WdZ representing the high temperature heating preheating setting value, CqZ representing the oxygen out-gas preheating setting value, JqZ representing the oxygen in-gas preheating setting value, TlZ representing the pushing material preheating setting value, and JlZ representing the in-feeding preheating setting value is shown in table 2.

[0065] Table 2, example of high temperature heating preheating setting value of high-powdered limestone in the preheating chamber

[0066] Case 5 Case 6 Case 7 Case 8 Oxygen out-gas preheat setpoint CqZ 560.7 560.7 560.7 650.8 Oxygen in-gas preheat setpoint JqZ 45.16 45.16 99.48 103.46 Pusher preheat setpoint TlZ 53.18 42.39 61.82 61.82 Feed preheat setpoint JlZ 19.25 17.40 22.65 22.65 High temperature heating preheat setpoint WdZ 156.28 83.30 128.60 132.52

[0067] According to case 5 and case 6, the high temperature heating preheating setting value is reduced when feeding, that is, the entering of high-powdered limestone will reduce the temperature of the preheating chamber, and the high temperature heating preheating setting value is increased when pushing, so that the high-powdered limestone is pushed out, the internal oxygen is fully burned, and the internal preheating effect is improved, so that the feeding mode of small amount and multiple times is adopted, and the single quantitative pushing mode is adopted.

[0068] According to the case 7 and the case 8, the temperature and the speed of the injected oxygen are increased, the oxygen inlet preheating setting value is increased, the high-temperature heating preheating setting value is increased, that is, the injected oxygen can improve the preheating effect of the internal combustion of the preheating chamber, but the gain is not large; the temperature of the discharged oxygen is increased, the discharge speed is reduced, the oxygen outlet preheating setting value is increased, the high-temperature heating preheating setting value is increased, that is, the temperature of the discharged oxygen is high and the discharge speed is slow, that is, the oxygen in the preheating chamber can be fully combusted, the preheating effect is improved, and the gain effect is slightly more obvious than the gain effect of the oxygen inlet preheating setting value.

[0069] Specifically, the obtaining steps of the oxygen outlet preheating setting value, the oxygen inlet preheating setting value, the pushing material preheating setting value and the feeding material preheating setting value, the oxygen inlet and outlet influence coefficient and the stacking material inlet and outlet influence coefficient are as follows:

[0070] Temperature sensors are installed at the inlet and the outlet, and a temperature sensor is additionally arranged in the preheating chamber, data detected by the temperature sensors are transmitted to a database of a preheating chamber controller, the oxygen inlet preheating setting value is obtained by comprehensively analyzing the measurement data of the temperature sensor at the inlet, the oxygen outlet preheating setting value is obtained by comprehensively analyzing the measurement data of the temperature sensor at the outlet, and the oxygen inlet and outlet influence coefficient is obtained by comprehensively analyzing the measurement data of the temperature sensor additionally arranged in the preheating chamber.

[0071] Flow sensors are installed at the feeding channel and the pushing channel, and a pressure sensor is additionally arranged in the preheating chamber, data detected by the flow sensors and the pressure sensor are transmitted to the database of the preheating chamber controller, the feeding material preheating setting value is obtained by comprehensively analyzing the measurement data of the flow sensor at the feeding channel, the pushing material preheating setting value is obtained by comprehensively analyzing the measurement data of the flow sensor at the pushing channel, and the stacking material inlet and outlet influence coefficient is obtained by comprehensively analyzing the measurement data of the pressure sensor.

[0072] Specifically, the specific calculation formula of the stacking gap preheating setting value is as follows:

[0073]

[0074] Wherein, FxZ represents the stacking gap preheating setting value, JfZ represents the feeding gap preheating setting value, TfZ represents the pushing gap preheating setting value, λ1, λ2, λ3 represent the feeding gap adjustment coefficient, the pushing gap adjustment coefficient and the superposition adjustment coefficient respectively, and α1, α2 represent the feeding gap preheating action coefficient and the pushing gap preheating action coefficient respectively.

[0075] According to long-term statistical calculation, the values of λ1, λ2, λ3, α1 and α2 are 0.46, 0.12, 0.52, 0.14 and 0.11 respectively.

[0076] FxZ represents the preheating setting value of the stacking gap, JfZ represents the preheating setting value of the feeding gap, and TfZ represents the preheating setting value of the pushing gap, and the relationship is shown in Table 3:

[0077] Table 3, examples of the preheating setting value of the stacking gap of high-powdered limestone in the preheating chamber

[0078]

[0079] As can be seen from the cases in Table 3, the stacking gap value is affected when feeding, resulting in an increase in the preheating setting value of the stacking gap; and the preheating setting value of the stacking gap is reduced when discharging, indicating that the internal combustion is sufficient when discharging.

[0080] Specifically, the preheating setting value of the feeding gap, the preheating setting value of the pushing gap, the adjustment coefficient of the feeding gap, the adjustment coefficient of the pushing gap, and the superposition adjustment coefficient are obtained by the following steps:

[0081] Pressure sensors are installed at the feeding channel and the pushing channel, the feeding in the feeding channel is in the mode of a small amount and multiple times, the pushing in the pushing channel is discharged according to a fixed number of times, pressure sensors are arranged in the upper half, the middle, and the lower half of the high-powdered limestone in the preheating chamber, the data of the pressure sensors are transmitted to the database of the preheating chamber controller, the preheating setting value of the feeding gap is obtained by comprehensive analysis of the values of the pressure sensors of the feeding channel, the preheating setting value of the pushing gap is obtained by comprehensive analysis of the values of the pressure sensors of the pushing channel, the adjustment coefficient of the feeding gap, the adjustment coefficient of the pushing gap, and the superposition adjustment coefficient are obtained by comprehensive analysis of the values of the pressure sensors arranged in the upper half, the middle, and the lower half of the high-powdered limestone in the preheating chamber, and the preheating action coefficient of the feeding gap and the preheating action coefficient of the pushing gap are obtained by comprehensive analysis of the feeding speed of the feeding channel and the pushing speed of the pushing channel.

[0082] Specifically, in step four, the high-powdered limestone is discharged after being cooled to 130℃ in the vertical cooler.

[0083] According to the above description, the related personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A method of producing metallurgical lime using high-pulverized limestone, characterized by: The method comprises the following specific steps: Step one: limestone screening and drying, first, the limestone is screened by a vibrating screen, and then the high-powderized limestone is dried at low temperature and enters the rotary kiln; Step two: preheat, the high-powdered limestone in the rotary kiln is preheated in the preheating chamber of the preheater through the feeding channel, and the preheating chamber preheats the high-powdered limestone to ; Step three: the preheated high-powderized limestone enters the rotary kiln for calcination; Step four: the high-powderized limestone is cooled in a vertical cooler after calcination; The specific steps of step two are as follows: S21, preheating the preheating chamber, the temperature is controlled at ; S22, injecting high-pulverized limestone through the feeding channel, the density of the high-pulverized limestone in the preheating chamber is controlled at 1.5 ; S23, start preheating the high-powderized limestone, and introduce oxygen to ensure sufficient combustion and heating inside the preheating chamber; S24, push the high-powderized limestone with the comprehensive preheating setting value out through the pushing channel and the pushing plate; S25, a controller is arranged on one side of the preheating chamber, which controls the feeding and discharging, and controls the oxygen inlet and outlet, so that the high-powderized limestone quickly reaches the comprehensive preheating setting value, and the high-powderized limestone in the preheating chamber is efficiently preheated; The specific calculation formula of the comprehensive preheating setting value is as follows: wherein, is represented as an integrated preheating set value, is represented as a high-temperature heating preheating set value, is represented as a stockpile gap preheating set value, , , , are respectively represented as a high-temperature heating adjustment coefficient, a stockpile gap adjustment coefficient, a cooperative adjustment coefficient, and a preheating coupling adjustment coefficient, is represented as a smoothing coefficient; The specific calculation formula of the high-temperature heating preheating setting value is as follows: wherein, is a high temperature heating preheat setpoint, is an oxygen out preheat setpoint, is an oxygen in preheat setpoint, is a push material preheat setpoint, is a feed material preheat setpoint, and are an oxygen in / out influence factor, a stack in / out influence factor, respectively, is an oxygen adjustment factor in the preheat chamber; The specific calculation formula of the stacking gap preheating setting value is as follows: wherein, represents a preheating set value for the charging gap, represents a preheating set value for the feeding gap, represents a preheating set value for the pushing gap, , , respectively represent a feeding gap adjustment coefficient, a pushing gap adjustment coefficient, and a superposition adjustment coefficient, , respectively represent a preheating action coefficient for the feeding gap and a preheating action coefficient for the pushing gap.

2. A method of producing metallurgical lime using high-pulverized limestone according to claim 1, characterized in that: The obtaining steps of the oxygen outlet preheating setting value, the oxygen inlet preheating setting value, the pushing preheating setting value, the feeding preheating setting value, the oxygen inlet and outlet influence coefficient, and the stacking inlet and outlet influence coefficient are as follows: Temperature sensors are installed at the gas inlet and the gas outlet, and a temperature sensor is additionally arranged in the preheating chamber, the data detected by the temperature sensors are transmitted to the database of the preheating chamber controller, the oxygen inlet preheating setting value is obtained by comprehensively analyzing the measurement data of the temperature sensor at the gas inlet, the oxygen outlet preheating setting value is obtained by comprehensively analyzing the measurement data of the temperature sensor at the gas outlet, and the oxygen inlet and outlet influence coefficient is obtained by comprehensively analyzing the measurement data of the temperature sensor additionally arranged in the preheating chamber; Flow sensors are installed at the feeding channel and the pushing channel, and a pressure sensor is additionally arranged in the preheating chamber, the data detected by the flow sensors and the pressure sensor are transmitted to the database of the preheating chamber controller, the feeding preheating setting value is obtained by comprehensively analyzing the measurement data of the flow sensor at the feeding channel, the pushing preheating setting value is obtained by comprehensively analyzing the measurement data of the flow sensor at the pushing channel, and the stacking inlet and outlet influence coefficient is obtained by comprehensively analyzing the measurement data of the pressure sensor.

3. A method of producing metallurgical lime using high-pulverized limestone according to claim 1, characterized in that: The obtaining steps of the feeding gap preheating setting value, the pushing gap preheating setting value, the feeding gap adjustment coefficient, the pushing gap adjustment coefficient, the superposition adjustment coefficient, the feeding gap preheating action coefficient, and the pushing gap preheating action coefficient are as follows: Pressure sensors are installed at the feeding channel and the pushing channel, the feeding at the feeding channel is in the way of small amount and multiple times, the pushing at the pushing channel is in the way of fixed times, pressure sensors are arranged at the upper half area, the middle area and the lower half area of the high-powdered limestone in the preheating chamber, the data of the pressure sensors are transmitted to the database of the preheating chamber controller, the feeding gap preheating setting value is obtained through the comprehensive analysis of the values of the pressure sensors at the feeding channel, the pushing gap preheating setting value is obtained through the comprehensive analysis of the values of the pressure sensors at the pushing channel, the feeding gap adjustment coefficient is obtained through the comprehensive analysis of the values of the pressure sensors at the upper half area, the middle area and the lower half area of the high-powdered limestone in the preheating chamber, the pushing gap adjustment coefficient and the superposition adjustment coefficient, the feeding gap preheating action coefficient and the pushing gap preheating action coefficient are obtained through the comprehensive analysis of the feeding speed of the feeding channel and the pushing speed of the pushing channel.

4. A method of producing metallurgical lime using high-pulverized limestone according to claim 1, characterized in that: In step four, the high-pulverized limestone is cooled to 130 and discharged.

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