Intelligent system and method for counting the tapping quantity of a blast furnace

Abstract

The application discloses an intelligent system and method for counting the tapping quantity of a blast furnace, which comprises a granulating tower, a water inlet pipe, a water outlet pipe, an accident water pipe, a bottom filter tank, a circulating cold water tank, a cold water pump, a hot water pump, and a flowmeter, a pressure regulating valve and a temperature instrument electrically connected with a computer CRT control system and a display. The method comprises the determination of the water inlet and outlet flow, the determination of the water density, the determination of the water content of the water granulated slag, the counting of the tapping quantity, and the comparison and determination of the theoretical slag quantity and the tapping quantity. The flowmeter and the pressure regulating valve arranged on the water inlet pipe and the water outlet pipe can control the water flow, the tapping quantity is quantitatively determined according to the water content of the water granulated slag and the water granulated slag coefficient, the accurate counting of the tapping quantity of the blast furnace is realized, the whole working condition is not affected by the external environment such as the vibration and smoke of the blast furnace tapping site, and the quantitative accuracy is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blast furnace ironmaking, in particular to an intelligent system and method for counting the slag discharge of a blast furnace. BACKGROUND

[0002] Blast furnace ironmaking is the main method of modern ironmaking, and the iron produced by this method accounts for more than 95% of the world's total iron production. The products produced by blast furnace ironmaking mainly include slag, iron and coal gas, etc., among which the slag is mainly used as an industrial raw material. The blast furnace slag treatment method is mainly divided into dry slag and water quenched slag. Since dry slag treatment is easy to pollute the environment and has low resource utilization rate, it is rarely used now. At present, the blast furnace mainly adopts the water quenched slag treatment method at home and abroad. The blast furnace slag after water quenching is mainly transported out by truck or train, and then is metered.

[0003] In the normal production process, the high-temperature liquid slag iron of the blast furnace is layered and separated in the main channel, and is discharged from the iron channel and the slag channel respectively. Since the slag has small density and high temperature, it is in a foamy state in the blast furnace, occupies a large volume, and the over-limit storage of the slag quantity will cause the pressure of the blast furnace to be tense, which is not conducive to the stability of the blast furnace. The monitoring of the slag discharge quantity of the blast furnace has always been a short board, but the slag discharge quantity of the blast furnace is crucial for the efficient and stable operation of the large blast furnace. In the prior art, the means for obtaining the data is manual measurement at the blast furnace and experience judgment by the blast furnace operator. The manual measurement method is very tiring and dangerous for the operator to work in the high-temperature environment, and the experience judgment has a large error.

[0004] According to the search, Chinese patent CN109852746A discloses a blast furnace slag treatment device and a slag flushing method. The molten slag flow detection device is arranged at the end of the blast furnace slag channel for real-time online detection of the molten slag flow output by the blast furnace. According to the change of the molten slag flow, the water quantity of the blast furnace slag flushing is adjusted, which can not only ensure the stability of the water slag quality, but also reduce the energy consumption of the water slag system. The molten slag flow detection device is realized by weighing the slag quantity through the gravity sensor arranged at the end of the blast furnace slag channel. Since the blast furnace slag is flowing in real time and the flow rate is unstable, the weighing accuracy is easily disturbed, and there is a problem of insufficient accuracy. Chinese patent CN112862769A discloses a blast furnace slag-iron ratio online intelligent monitoring method and system, which obtains the slag-iron flow diameter of the blast furnace tapping hole through image processing of the slag-iron flow image of the blast furnace tapping hole by a camera, obtains the slag-iron flow rate of the blast furnace tapping hole according to the fluid longitudinal flow rate distribution characteristics, and calculates the slag quality real-time change rate through the real-time weight gain rate of the torpedo car, so as to obtain the real-time slag-iron ratio of the blast furnace tapping, and form a complete intelligent method for real-time calculation of the slag-iron ratio of the blast furnace tapping process. However, the camera working condition is easily affected by the large smoke dust and the real-time change of the slag-iron flow diameter when the blast furnace tapping hole is tapped, and then the image processing is affected. For example, Chinese patent CN109439812A provides a method for measuring blast furnace slag discharge and blast furnace slag defoaming, which can accurately measure the blast furnace slag discharge without adding a weighing device. The patent needs to increase the slag tank and calibrate the slag density, which not only has high cost, but also increases the complexity and operation intensity of the process. SUMMARY

[0005] The purpose of the present application is to provide an intelligent system and method for counting the blast furnace slag discharge, which quantifies the slag discharge by water flow, water-quenched slag moisture content and water slag coefficient, and accurately counts the slag discharge to solve the problems in the above background art.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] The application discloses an intelligent system for counting the slag discharge amount of a blast furnace, which comprises a granulation tower, a water inlet pipe, a water outlet pipe, an accident water pipe, a bottom filter tank, a circulating cold water tank, a cold water pump, a hot water pump, a computer CRT control system and a display; symmetrically arranged on both sides of the granulation tower are stamping boxes, the upper portions of the stamping boxes are provided with molten slag grooves, the upper portions of the molten slag grooves are additionally provided with the accident water pipe, and the accident water pipe, the water inlet pipe and the water outlet pipe are all provided with pressure regulating valves; one end of the water inlet pipe is connected to the stamping box, and the other end is connected to three cold water pumps through branch pipelines in parallel; one end of the water outlet pipe is connected to the circulating cold water tank, and the other end is connected to three hot water pumps through branch pipelines in parallel, and the other ends of the three hot water pumps are correspondingly connected to three bottom filter tanks, and the three bottom filter tanks are connected to the granulation tower through pipelines in parallel; the water outlet pipe is provided with a temperature instrument, and the water outlet pipe and the water inlet pipe are both provided with flow meters; the signal interfaces of the flow meters, the pressure regulating valves, the temperature instrument, the hot water pumps and the cold water pumps are electrically connected to the computer CRT control system and the display.

[0008] Further, the circulating cold water tank is respectively connected with a drainage water pipe and a water supplement pipe.

[0009] Further, the circulating cold water tank is provided with a water level instrument, when the water level H of the circulating cold water tank is less than or equal to 3.5 m or greater than or equal to 7.5 m, the computer CRT control system and the display send an alarm to remind manual intervention, and the computer CRT control system and the display open the water supplement pipe network or the drainage pipe network to control the water level of the circulating cold water tank.

[0010] Further, the working states of the three hot water pumps are two for use and one for standby, and the three hot water pumps can be selectively started according to production needs.

[0011] Further, the computer CRT control system and the display are used for detecting the current of the hot water pump and the cold water pump, and detecting the water inflow and outflow real-time flow value of the flow meters, the value of the pressure regulating valve and the temperature instrument.

[0012] The application provides another technical scheme: an intelligent method for counting the slag discharge amount of a blast furnace, which comprises the following steps:

[0013] Step one: the computer CRT control system and the display are used for real-time collection of the production values of the flow meters, the pressure regulating valve, the temperature instrument, the hot water pump and the cold water pump;

[0014] Step two: determination of the water inflow and outflow flow: the water inflow and outflow real-time flow values are read through the flow meters installed on the pipelines, and the flow values V 进 and V 出 of the two flow meters within the corresponding time are calculated; if V 事故水 and P 事故水 are both zero, and |V 实时进 -V 进i | / |V实时进 If V≤5%, select V 实时进i , otherwise, determine that the data is abnormal, check the reason and correct the table; similarly, measure the hot water pump, select V 实时出i , otherwise, determine that the data is abnormal, check the reason and correct the table; at the same time, record the opening and closing time t1, t2, t3 and t4 of the cold water pump and the hot water pump, V=V 进 -V 出 , V is the total water consumption in the tapping time;

[0015] Step three: determination of water density: read the discharge water temperature through the set temperature instrument, and use the mixed water density and temperature relationship formula p 出 = p 标定 α×(T-T标定) to calculate the mixed water density, wherein p 出 is the density value of the mixed water at the measured temperature T, p 标定 is the density value of the mixed water at the calibration temperature T, and a is a constant determined according to the test, T is the measured temperature, and T 标定 is the preset calibration temperature;

[0016] Step four: determination of water and slag moisture: after the hot water in the bottom filter tank is discharged, the bottom filter tank is divided into ten grids, water and slag samples are taken at different grids, and the average value of the weight is m1, and the average value of the weight after drying is m2, then the water and slag moisture content η = (m1-m2) / m1 is obtained;

[0017] Step five: statistics of the amount of slag: according to the total water consumption V, the density value of the mixed water, the water and slag moisture content and the water and slag coefficient β, the amount of slag M 出渣 = V p 出 / η , wherein the water and slag coefficient β is an empirical value, and the value is 1.2.

[0018] Further, in step two, when the water inlet pipe is broken, the computer CRT control system and the display issue an alarm to remind manual intervention, and the computer CRT control system and the display open the valve of the emergency water pipe by detecting the pressure regulating valve.

[0019] Further, the specific statistical method of the flow value in step two is as follows:

[0020] By starting the first hot water pump, maintaining operation for 3h, the average flow value when the hot water pump is running is counted, then the second and third hot water pumps are started, the real-time flow value is recorded, and the flow value corresponding to the single start of a cold water pump is calculated as V 进1 .

[0021] Then start two of the three cold water pumps and keep them running for 3 hours. Record the real-time flow rate and calculate the average flow rate corresponding to starting the two hot water pumps as V. 进2 ;

[0022] Start the three cold water pumps again and keep them running for 3 hours. Record the real-time flow rate and calculate the average flow rate corresponding to starting the three hot water pumps as V. 进3 .

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The intelligent system and method for counting blast furnace slag discharge volume of the present invention quantifies the slag discharge volume by water flow, water content of water-quenched slag, and water-slag coefficient, and can accurately count the slag discharge volume without adding additional devices such as slag pots.

[0025] 2. The intelligent system and method for counting the blast furnace slag discharge of the present invention has a water level meter in the circulating cold water tank. When the water level abnormally reaches the warning value, the system will issue an alarm to remind people to find the cause in time and open the water supply pipe network or the drainage pipe network.

[0026] 3. The intelligent system and method for counting the blast furnace slag discharge amount of the present invention can generate an alarm when the water inlet pipe is cut off during the tapping operation to remind people to find the cause in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a system structure block diagram of the present invention;

[0028] Figure 2 It is an alarm flow chart of the circulating cold water pool of the present invention;

[0029] Figure 3 This is a control flow chart for counting the blast furnace slag discharge amount in the present invention.

[0030] In the figure: 1. Punching box; 2. Granulating tower; 3. Slag ditch; 4. Flow meter; 5. Pressure regulating valve; 6. Water inlet pipe; 7. Bottom filter; 12. Thermometer; 13. Hot water pump; 16. Water outlet pipe; 17. Circulating cold water tank; 18. Cold water pump; 21. Emergency water pipe; 22. Computer CRT control system and display; 23. Drain pipe; 24. Water supply pipe. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Referring to Figure 1 , the embodiment of the present application provides an intelligent system for counting the slag discharge amount of a blast furnace, comprising a granulation tower 2, a water inlet pipe 6, a water outlet pipe 16, an emergency water pipe 21, a bottom filter tank 7, a circulating cold water tank 17, a cold water pump 18, a hot water pump 13, a computer CRT control system and a display 22; the granulation tower 2 is provided with a punch box 1 at a symmetrical position on both sides, the punch box 1 is provided with a molten slag groove 3 at the upper portion, which is a molten slag inlet, the upper portion of the molten slag groove 3 is additionally provided with the emergency water pipe 21, the emergency water pipe 21 is mainly used for opening only when the water inlet pipe 6 is detected to be broken by the system, the emergency water pipe 21, the water inlet pipe 6 and the water outlet pipe 16 are all provided with a pressure regulating valve 5; one end of the water inlet pipe 6 is connected to the punch box 1, and the other end is connected to three cold water pumps 18 through branch pipes in parallel; one end of the water outlet pipe 16 is connected to the circulating cold water tank 17, and the other end is connected to three hot water pumps 13 through branch pipes in parallel, and the other end of the three hot water pumps 13 is correspondingly connected to three bottom filter tanks 7, wherein, the hot water pump 13 is provided with three, and the working state is two for use and one for standby, and can be selectively opened according to production needs; the bottom filter tank 7 is provided with three, which is used for the sedimentation and temporary storage of water slag, and when a certain tank is full, the other tank can be switched, and the three bottom filter tanks 7 are connected in parallel through pipes to the granulation tower 2; the water outlet pipe 16 is provided with a temperature instrument 12, and the water outlet pipe 16 and the water inlet pipe 6 are both provided with a flow meter 4; the signal interfaces of the flow meter 4, the pressure regulating valve 5, the temperature instrument 12, the hot water pump 13 and the cold water pump 18 are all electrically connected to the computer CRT control system and the display 22, and the computer CRT control system and the display 22 are used for detecting the current of the hot water pump 13 and the cold water pump 18, and detecting the real-time flow value of the flow meter 4, the value of the pressure regulating valve 5 and the temperature instrument 12 on the water outlet pipe 16, the water inlet pipe 6 and the emergency water pipe 21.

[0033] Referring to Figure 2 In the above embodiment, the circulating cold water tank 17 is provided with a water level instrument, and the circulating cold water tank 17 is respectively connected with a drainage pipe 23 and a water supplement pipe 24, so that the water level in the tank can be monitored in real time, and water can be drained and supplemented in time to prevent the water level from falling too much; when the water level H of the circulating cold water tank 17 is less than or equal to 3.5 m or greater than or equal to 7.5 m, the computer CRT control system and the display 22 issue an alarm to remind manual intervention, and the computer CRT control system and the display 22 open the water supplement pipe network 24 or the drainage pipe network 23 to control the water level of the circulating cold water tank 17.

[0034] Referring to Figure 3 In order to further better explain the embodiment of the present application, an intelligent method for counting the slag discharge amount of a blast furnace is also provided, comprising the following steps:

[0035] Step one: Real-time data collection of flow meter 4, pressure regulating valve 5, temperature meter 12, hot water pump 13, and cold water pump 18 by computer CRT control system and display 22;

[0036] Step two: Determination of water inflow and outflow: Real-time water inflow and outflow values are read by flow meter 4 installed on the pipeline, and the flow values V 进 , V 出 of the two flow meters within the corresponding time are calculated; since each hot water pump 13 and cold water pump 18 has different processes, the relationship between the pump and the flow needs to be calibrated; the first hot water pump 13 is started, and the average flow value during the 3h operation of the hot water pump 13 is calculated, then the second and third hot water pumps 13 are started, and the real-time flow values are recorded, and the average flow value corresponding to the start of a single cold water pump 18 is calculated as V 进1 ; two of the three cold water pumps 18 are started at the same time, and the real-time flow values are recorded after 3h operation, and the average flow value corresponding to the start of two hot water pumps 13 is calculated as V 进2 ; then, three cold water pumps 18 are started at the same time, and the real-time flow values are recorded after 3h operation, and the average flow value corresponding to the start of three hot water pumps 13 is calculated as V 进3 ; during the slagging operation, when the water inflow pipe 6 is disconnected, the computer CRT control system and display 22 issue an alarm to remind manual intervention, and the computer CRT control system and display 22 detect the pressure regulating valve 5 and open the valve of the emergency water pipe 21;

[0037] If V 事故水 , P 事故水 are both zero, and |V 实时进 -V i | / |V 实时进 |≤5%, then V 实时进i is selected, otherwise it is determined that the data is abnormal, and the cause is checked and the table is calibrated; similarly, the hot water pump 13 is measured, and the corresponding average flow values are V 出1 , V 出2 , and V 出3 ; if |V 实时出 -V 出i | / |V 实时出 |≤5%, then V 实时出i is selected, otherwise it is determined that the data is abnormal, and the cause is checked and the table is calibrated, otherwise it is determined that the data is abnormal, and the cause is checked and the table is calibrated;

[0038] In this step, where i is 1, 2, 3, representing the number of started pumps, t1, t2 are the start and end operation times of the cold water pump 18, t3, t4 are the start and end operation times of the hot water pump 13, V 进 is the total water inflow of the water inflow pipe within the time period, and V出 V is the total water consumption in this period, V = V 进 -V 出 ;

[0039] Step three: determination of water density: generally, the density of water will change with temperature, the higher the temperature, the smaller the density, the lower the temperature, the greater the density; in order to improve the accuracy of statistics, the density of water in and out of the field at different temperatures needs to be calibrated to obtain the relationship between water density and temperature; since the water is relatively pure, ρ 进 is not calibrated, while the discharged water after slagging is mixed water, and the density ρ 排 changes greatly, which needs to be recalibrated;

[0040] Specifically, the temperature of the discharged water is read by the set temperature instrument 12, and the mixed water density and temperature relationship ρ 出 = ρ 标定 α×(T-T标定) is used to calculate the mixed water density, wherein ρ 出 is the density value of the mixed water at the measured temperature T, ρ 标定 is the density value of the mixed water at the calibration temperature T, α is a constant determined according to the test, T is the measured temperature, and T 标定 is the preset calibration temperature;

[0041] Step four: determination of water slag moisture content: after the hot water in the bottom filter tank 7 is discharged, the bottom filter tank 7 is divided into ten grids, water slag samples are taken at different grids, and the average value of the weight is m1, and the average value of the weight after drying is m2, then the water slag moisture content η = (m1-m2) / m1 is obtained;

[0042] Step five: statistics of slag discharge: according to the total water consumption V, the density value of the mixed water, the water slag moisture content and the water slag coefficient β, the slag discharge M 出渣 = Vρ 出 / η is calculated, wherein the water slag coefficient β is an empirical value, and the value is 1.2, which is the weight coefficient of the blast furnace slag after water quenching by high pressure water flow.

[0043] In the above steps, the comparison and determination method of the theoretical slag amount and the slag discharge is as follows: the system collects the iron content of each ore batch of the current furnace burden structure, calculates the theoretical batch iron amount of each batch W Fe t / ch, the theoretical slag ratio is W 渣 kg / .Fe, the number of running material batches X in the tapping time is recorded, and the theoretical slag amount is W 理论 = W Fe* W 渣kg* X 料批数 ; if |W 理论 -M 出渣 | / |W理论 If |V 事故水 -V 事故水 | / V 实时进 < 5%, the value is reasonable, otherwise, find the reason.

[0044] To further better explain the calculation process of the embodiment of the application, the following specific case is provided:

[0045] First step: start the computer CRT control system and display 22, detect the real-time flow value of the flow meter 4 in and out of the water pipe 6, the water outlet pipe 16 and the accident water pipe 21 and the temperature instrument 12 value, the average value is V 实时进 = 2400 m 3 / h, V 进2 = 2350 m 3 / h, V 实时出 = 2201 m 3 / h, V 出2 = 2175 m 3 / h, T = 88℃, V 事故水＝ 0 m 3 / h, P 事故水 = 0 MPa.

[0046] Second step: determination of the flow of water in and out:

[0047] V 事故水 , P 事故水 are all zero, and |V 实时进 -V 进2 | / V 实时进 = 2.08% < 5%, |V 实时出 -V 出2 | / V

[0048] 实时出 1.18% < 5%, then select V 实时进2 . Similarly, the hot water pump 13 is measured, and V 实时出2 is selected.

[0049] Third step: select an open iron mouth on the granulation tower 2, record the tapping time as 2h30min, record the opening time of the cold water pump 18 and the hot water pump 13 as 8:30, 8:40, and the closing time as 11:30, 10:55, calculate the running time as 3h, 3.25h, V = V 进 -V 出 = 2400*3h-2201*3.25h = 46.75 m 3 .

[0050] Fourth step: determination of water density:

[0051] The temperature of the discharged water was read by the temperature meter 12 as 88°C, and the density of the mixed water was calculated using the relationship between the density and temperature of the mixed water ρ 出 = ρ 标定 -α×(T-T标定) The density of the mixed water was calculated, T 标定 = 4°C, corresponding to ρ = 1 g / cm 3 , and α is an experimental constant = -0.002, and ρ 出 = 0.84 g / cm 3 .

[0052] Step 5: Measurement of the moisture content of the water slag:

[0053] When the hot water in the underdrain filter 7 was discharged, the underdrain filter 7 was divided into 10 grids, and 5 groups of 500 g of water slag samples were taken at different grid locations, and after drying, the weight values were 450 g, 466 g, 445 g, 452 g, and 451 g, and the average value was 452.8 g, so the water slag moisture content η = (500-452.8) / 500 = 9.43% was obtained.

[0054] Step 6: Statistics of the amount of slag discharged:

[0055] According to the total water consumption flow rate V, the density value of the discharged water, the water slag moisture content, and the water slag coefficient β = 1.2, the amount of slag discharged M 出渣 = Vρ 出 / ηβ = 46.75*0.84*10 3 * / 1.2*9.43% = 347.03 t.

[0056] Step 7: Comparison and determination of the theoretical slag amount and the amount of slag discharged:

[0057] According to the real-time collection of the current furnace charge structure batch of 125 t / ch, sinter of 76.05%, pellets of 6%, Newman ore of 17.95%, and silica of 0.3 t (auxiliary materials), among which the TFe of sinter was 56.59%, the TFe of pellets was 63.07%, and the TFe of Newman was 63.0%, the theoretical batch iron amount of each batch was calculated as 77.42 t / ch, the theoretical slag ratio was 320 kg / .Fe, and the number of batches within 2h30min was 14, so the theoretical slag amount was W 理论 = 77.42*320 * 14 / 1000 = 346.8 t.

[0058] Step 8: Calculation of |W 理论 -M 出渣 | / |W 理论 | = 0.66% ≤ 5%, so the value is reasonable.

[0059] In summary: the intelligent system and method for counting the slag discharge of blast furnace provided by the application can realize the control of water flow by setting flow meter 4 and pressure regulating valve 5 on the inlet water pipe 6 and outlet water pipe 16, can quantitatively count the slag discharge through the water content of quenched slag and the water slag coefficient, can realize the accurate counting of the slag discharge of blast furnace, and the entire working condition is not affected by the external environment such as the vibration and large smoke of the blast furnace tapping site, and the quantitative accuracy is higher.

[0060] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An intelligent method for counting blast furnace slag discharge, based on an intelligent system for counting blast furnace slag discharge, characterized by: The system comprises a granulating tower (2), an inlet pipe (6), an outlet pipe (16), an emergency water pipe (21), a bottom filter (7), a circulating cold water tank (17), a cold water pump (18), a hot water pump (13), a computer CRT control system and a display (22); a sluicing box (1) is symmetrically arranged on both sides of the granulating tower (2); a slag ditch (3) is arranged on the upper part of the slag ditch (3); an emergency water pipe (21) is additionally arranged on the upper part of the slag ditch (3); and a pressure regulating valve (5) is provided on the emergency water pipe (21), the inlet pipe (6) and the outlet pipe (16); one end of the inlet pipe (6) is connected to the sluicing box (1), and the other end is connected in parallel to three cold water pumps through a branch pipe. (18); one end of the outlet pipe (16) is connected to the circulating cold water tank (17), and the other end is connected to three hot water pumps (13) in parallel through a branch pipe. The other ends of the three hot water pumps (13) are connected to three bottom filters (7) respectively, and the three bottom filters (7) are connected to the granulation tower (2) in parallel through pipes; a temperature meter (12) is provided on the outlet pipe (16), and a flow meter (4) is installed on the outlet pipe (16) and the inlet pipe (6); the signal interfaces of the flow meter (4), the pressure regulating valve (5), the temperature meter (12), the hot water pump (13) and the cold water pump (18) are all electrically connected to the computer CRT control system and the display (22), and the following steps are adopted: Step 1: The production values ​​of the flow meter (4), the pressure regulating valve (5), the temperature meter (12), the hot water pump (13), and the cold water pump (18) are summarized in real time by the computer CRT control system and the display (22); Step 2: Determination of inlet and outlet flow: Read the real-time inlet and outlet flow values ​​through the flow meter (4) installed on the pipeline, and calculate the flow rate V of the two flow meters within the corresponding time. 进 、V 出 If V 事故水 、P 事故水 are all zero, and |V 实时进 -V 进i | / |V 实时进 |≤5%, then select V 实时进i Otherwise, it is determined that the data is abnormal, check the cause and calibrate the meter; similarly, measure the hot water pump (13) and select V 实时出i Otherwise, it is determined to be abnormal data, check the cause and calibrate the meter; at the same time, record the opening and closing time t1, t2 and t3, t4 of the cold water pump (18) and the hot water pump (13), V 进 = , V 出 = , V = V 进 -V 出 , V is the total water consumption during the tapping time; Step 3: Determination of water density: Read the temperature of the discharged water through the set thermometer (12), and use the relationship between the density of mixed water and temperature ρ 出 =ρ 标定 α×(T-T标定) Calculate the density of mixed water, where ρ 出 is the density of the mixed water at the measured temperature T, ρ 标定 is the density of the mixed water at the calibration temperature T, α is a constant determined by the experiment, T is the measured temperature, T 标定 is the preset calibration temperature; Step 4: Determination of water content of water residue: After the hot water in the bottom filter (7) is drained, the bottom filter (7) is divided into ten grids, and water residue samples are taken at different grids and weighed to obtain an average value m1. After drying, the average value is weighed to obtain m2, and the water content of the water residue is obtained as η = (m1-m2) / m1; Step 5: Statistics of slag discharge: According to the total water consumption V, the density of mixed water, the water content of slag and the water-slag coefficient β, the slag discharge volume M can be calculated. 出渣 =Vρ 出 / ηβ={ - } *ρ 标定 α×(T-T标定) * / ηβ, where the water-slag coefficient β is an empirical value and is taken as 1.

2.

2. The intelligent method for counting blast furnace slag discharge according to claim 1, characterized in that: The circulating cold water pool (17) is respectively connected to a drainage pipe (23) and a water supply pipe (24).

3. The intelligent method for calculating blast furnace slag discharge according to claim 2, wherein: A water level meter is provided in the circulating cold water pool (17). When the water level of the circulating cold water pool (17) is H≤3.5m or H≥7.5m, the computer CRT control system and display (22) issues an alarm to remind manual intervention. The computer CRT control system and display (22) opens the water supply pipe network (24) or the drainage pipe network (23) to control the water level of the circulating cold water pool (17).

4. The intelligent method for counting blast furnace slag discharge according to claim 1, characterized in that: The working status of the three hot water pumps (13) is two in use and one in standby, and they can be selectively turned on according to production needs.

5. The intelligent method for counting blast furnace slag discharge according to claim 1, characterized in that: The computer CRT control system and display (22) are used to detect the current of the hot water pump (13) and the cold water pump (18), as well as to detect the real-time flow values ​​of the inlet and outlet water of the flow meter (4) on the outlet water pipe (16), the inlet water pipe (6), and the emergency water pipe (21), the values ​​of the pressure regulating valve (5), and the temperature meter (12).

6. The intelligent method for counting blast furnace slag discharge according to claim 1, characterized in that: In step 2, when the water inlet pipe (6) is cut off, the computer CRT control system and display (22) issues an alarm to remind manual intervention. The computer CRT control system and display (22) opens the valve of the emergency water pipe (21) by detecting the pressure regulating valve (5).

7. The intelligent method for counting blast furnace slag discharge according to claim 1, characterized in that: The specific statistical method for the flow value in step 2 is as follows: By starting the first hot water pump (13) and keeping it running for 3 hours, the average flow rate value of the hot water pump (13) during operation is calculated, and then the second and third hot water pumps (13) are started, the real-time flow rate values ​​are recorded, and the average flow rate corresponding to starting a single cold water pump (18) is calculated as V 进1 ; Then start two of the three cold water pumps (18) and keep them running for 3 hours. Record the real-time flow rate and calculate the average flow rate corresponding to starting the two hot water pumps (13) as V 进2 ; Then start the three cold water pumps (18) and keep them running for 3 hours. Record the real-time flow rate and calculate the average flow rate corresponding to starting the three hot water pumps (13). 进3 .

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