Sintering mixture water supplementing system

Abstract

The utility model discloses a sintering mixture water replenishing system, which belongs to the technical field of sintering batching equipment and comprises a first mixer, a second mixer, a PLC (programmable logic controller) moisture controller and a system workstation. A first anti-collision device, a first leveling device and a first microwave moisture meter are sequentially arranged on the feeding belt in front of the first mixer; a second anti-collision device, a second leveling device and a second microwave moisture meter are sequentially arranged on the first discharging belt behind the first mixer; a third anti-collision device, a third leveling device and a third microwave moisture meter are sequentially arranged on the second discharging belt behind the second mixer; the first microwave moisture meter, the second microwave moisture meter and the third microwave moisture meter are all connected with the PLC moisture controller; the water replenishing pipeline of the first mixer comprises a hot water replenishing pipeline and a normal-temperature water replenishing pipeline; and the water replenishing pipeline of the second mixer is a steam water replenishing pipeline. According to the utility model, proper and stable moisture in the sintering mixture is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to sintering burdening room equipment technical field especially a kind of sintering mixture water supplement system. BACKGROUND

[0002] Sintering production is a complex physical and chemical process, which belongs to the front-end process of ironmaking. In this process, there are many factors affecting the quality of sinter, among which the moisture content of the mixture plays a decisive role. Appropriate moisture is one of the necessary conditions for the smooth progress of the sintering process of sintering mixture. Suitable moisture can improve the permeability of the material layer, thermal conductivity, and reduce the air resistance between the mixture and the combustion-supporting effect of solid fuel. If the moisture content of the mixture is low, the sintering speed will be fast, but the yield will be low, the return ore will be large, and the drum index will decrease. If the moisture content of the mixture is high, the sintering speed will be slow, the productivity will be low, and various consumptions will increase. Due to the improper control of moisture, when the sinter enters the ring cooling drum, the blast effect of the ring cooling drum blower, the sinter that has not been completely burned continues to burn, causing the sinter in the ring cooling drum to be difficult to cool down, and red sinter is easy to produce, which directly burns the belt in the finished product system and causes production accidents,

[0003] Therefore, the control of the moisture content of the sintering mixture is an important link in the sintering production, which not only affects the vertical sintering speed, but also affects the yield, productivity and drum index of the sinter. It is also an important part of the sintering production link to ensure the stable control of the moisture content of the mixture. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a sintering mixture water supplement system, which effectively ensures the appropriate and stable moisture content of the sintering mixture, is beneficial to the uniform mixing and granulation of the sintering mixture, improves the permeability of the material layer, reduces the gas resistance, improves the heat exchange conditions of the sintering material, and promotes the benign circulation of the production process.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A sintering mixture water supplement system, comprising a first mixing machine, a second mixing machine, a PLC moisture controller and a system workstation connected to the PLC moisture controller; a first anti-collision device, a first material leveling device and a first microwave moisture meter are sequentially arranged on the feeding belt in front of the first mixing machine; a second anti-collision device, a second material leveling device and a second microwave moisture meter are sequentially arranged on the first discharging belt behind the first mixing machine; a third anti-collision device, a third material leveling device and a third microwave moisture meter are sequentially arranged on the second discharging belt behind the second mixing machine; the first microwave moisture meter, the second microwave moisture meter and the third microwave moisture meter are connected to the PLC moisture controller; the water supplement pipeline of the first mixing machine comprises a hot water supplement pipeline and a normal temperature supplement pipeline; the water supplement pipeline of the second mixing machine is a steam supplement pipeline.

[0007] The further improvement of the technical scheme of the utility model lies in that: the first electric regulating valve, the first electromagnetic flowmeter, the first pressure transmitter, the first cut-off valve and the first manual regulating valve are arranged on the hot water water supplement pipeline and are connected with the system workstation; the second electric regulating valve, the second electromagnetic flowmeter, the second pressure transmitter, the second cut-off valve and the second manual regulating valve are arranged on the normal temperature water supplement pipeline and are connected with the system workstation.

[0008] The further improvement of the technical scheme of the utility model lies in that: the third electric regulating valve, the third electromagnetic flowmeter, the third pressure transmitter, the third cut-off valve and the third manual regulating valve are arranged on the steam water supplement pipeline and are connected with the system workstation.

[0009] The further improvement of the technical scheme of the utility model lies in that: the system workstation comprises one industrial computer placed in the central control room and two touch screen operation terminals placed in the mixing site.

[0010] The further improvement of the technical scheme of the utility model lies in that: the normal temperature water supplement pipeline is used as a standby water supplement pipeline.

[0011] The further improvement of the technical scheme of the utility model lies in that: the first anti-collision device, the first material leveling device, the second anti-collision device, the second material leveling device, the third anti-collision device and the third material leveling device are connected with the system workstation.

[0012] Due to the adoption of the above technical scheme, the utility model has the following technical progress:

[0013] 1. The utility model sets one microwave moisture meter in front of and behind the first mixer, sets one microwave moisture meter behind the second mixer, sets anti-collision devices and material leveling devices in front of the three microwave moisture meters, effectively ensures the accuracy of the microwave moisture meter in monitoring the moisture, and adjusts the moisture of the sintering mixture through the PLC moisture controller and the system workstation, effectively ensures the stable moisture in the sintering mixture, ensures the uniform mixing and granulation of the sintering mixture, improves the air permeability of the material layer, reduces the gas resistance, improves the heat exchange condition of the sintering mixture, and promotes the benign circulation of the production process.

[0014] 2. The water supplement pipeline of the first mixer is provided with a hot water water supplement pipeline and a normal temperature water supplement pipeline, the hot water water supplement pipeline is used to supplement water to the first mixer when the production is normal, effectively improves the material temperature, reduces the over-wet layer of the sintering mixture, and ensures the combustion of the sintering mixture; when the hot water water supplement pipeline fails, the normal temperature water supplement pipeline can be switched to supplement water, and the water supplement temperature is adjusted in combination with the steam water supplement pipeline, thereby ensuring the normal production.

[0015] 3. The utility model discloses a sintering mixture water supplementing system, which comprises a first anti-collision device, a first material leveling device, a first microwave moisture meter, a first mixer, a second anti-collision device, a second material leveling device, a second microwave moisture meter, a second mixer, a third anti-collision device, a third material leveling device, a third microwave moisture meter, a hot water supplementing pipeline, a normal-temperature water supplementing pipeline, a steam supplementing pipeline, a sintering machine and a ring cooler. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a sintering mixture water supplementing system structural schematic diagram provided in the embodiments of the present utility model.

[0018] Figure 2 It is a sintering mixture water supplementing system application schematic diagram provided in the embodiments of the present utility model.

[0019] Among them, 1, batching bin;2, first anti-collision device;3, first material leveling device;4, first microwave moisture meter;5, first mixer;6, second anti-collision device;7, second material leveling device;8, second microwave moisture meter;9, second mixer;10, third anti-collision device;11, third material leveling device;12, third microwave moisture meter;13, hot water supplementing pipeline;14, normal-temperature water supplementing pipeline;15, steam supplementing pipeline;16, sintering machine;17, ring cooler. DETAILED DESCRIPTION

[0020] It should be noted that the terms "include" and "have" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0022] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0023] The utility model will be further described in detail below in combination with the drawings and examples:

[0024] As shown in the drawing, Figures 1-2 A sintering mixture water supplementing system, comprising a first mixer 5, a second mixer 9, a PLC water content controller and a system workstation connected to the PLC water content controller; a first anti-collision device 2, a first material leveling device 3 and a first microwave moisture meter 4 are sequentially arranged on the feeding belt in front of the first mixer 5; a second anti-collision device 6, a second material leveling device 7 and a second microwave moisture meter 8 are sequentially arranged on the first discharging belt behind the first mixer 5; a third anti-collision device 10, a third material leveling device 11 and a third microwave moisture meter 12 are sequentially arranged on the second discharging belt behind the second mixer 9; the first microwave moisture meter 4, the second microwave moisture meter 8 and the third microwave moisture meter 12 are all connected to the PLC water content controller; the water supplementing pipeline of the first mixer 5 comprises a hot water supplementing pipeline 13 and a normal temperature supplementing pipeline 14; the water supplementing pipeline of the second mixer 9 is a steam supplementing pipeline 15.

[0025] Specifically, the first microwave moisture meter 4 and the second microwave moisture meter 8 are used for detecting the real-time moisture value of the feeding and discharging of the first mixer 5, as the basis for adjusting the water amount of the first mixer 5;

[0026] The third microwave moisture meter 12 is used for detecting the real-time moisture value of the discharging of the second mixer 9, as the basis for adjusting the water amount of the second mixer 9;

[0027] The first anti-collision device 2 is arranged in front of the first microwave moisture meter 4, the second anti-collision device 6 is arranged in front of the second microwave moisture meter 8, and the third anti-collision device 10 is arranged in front of the third microwave moisture meter 12, so that the large material is prevented from colliding with the antenna of the microwave moisture meter, and the accuracy of the microwave moisture meter in collecting moisture is ensured.

[0028] The first material leveling device 3 is arranged in front of the first microwave moisture meter 4, the second material leveling device 7 is arranged in front of the second microwave moisture meter 8, and the third material leveling device 11 is arranged in front of the third microwave moisture meter 12, so that the influence of uneven material on the microwave moisture meter in collecting moisture is reduced, and the accuracy of the microwave moisture meter in collecting moisture is further ensured.

[0029] The PLC moisture controller adopts a Siemens 1200 series PLC; and the system workstation is connected to the sintering production system.

[0030] When the system is normally operated, the first mixer 5 is used to supplement water through the hot water supplement pipeline 13, when the hot water supplement pipeline 13 fails, the normal-temperature water supplement pipeline 14 can be used to replace the hot water supplement pipeline 13 to supplement water, and the steam supplement pipeline 15 is combined to adjust the water temperature, so that the normal production is ensured.

[0031] Further, the first electric regulating valve, the first electromagnetic flowmeter, the first pressure transmitter, the first cut-off valve and the first manual regulating valve connected to the system workstation are arranged on the hot water supplement pipeline 13; and the second electric regulating valve, the second electromagnetic flowmeter, the second pressure transmitter, the second cut-off valve and the second manual regulating valve connected to the system workstation are arranged on the normal-temperature water supplement pipeline 14.

[0032] Further, the third electric regulating valve, the third electromagnetic flowmeter, the third pressure transmitter, the third cut-off valve and the third manual regulating valve connected to the system workstation are arranged on the steam supplement pipeline 15.

[0033] Further, the system workstation includes one industrial computer placed in the central control room and two touch screen operation terminals placed in the mixing field.

[0034] Further, the normal-temperature water supplement pipeline 14 is used as a standby water supplement pipeline.

[0035] Further, the first anti-collision device 2, the first material leveling device 3, the second anti-collision device 6, the second material leveling device 7, the third anti-collision device 10 and the third material leveling device 11 are connected to the system workstation.

[0036] A use method of the sintering mixture water supplement system:

[0037] As Figure 2As shown, after the sintering mixture comes out of the batching bin 1, it enters the first mixer 5 via the feeding belt. In the first mixer 5, water is added and mixed through the water supply pipe (hot water supply pipe 13 or normal temperature water supply pipe 14). The sintering mixture after water addition and mixing enters the second mixer 9 via the first discharge belt. In the second mixer 9, water is added and mixed through the steam water supply pipe 15. After being sintered in the sintering machine 16, it enters the ring cooler 17 for cooling. After being screened, it is sent to the blast furnace.

[0038] like Figure 1 , 2 As shown, the first microwave moisture meter 4, the second microwave moisture meter 8, and the third microwave moisture meter 12 collect the actual moisture value of the sintering mixture and transmit it to the PLC moisture controller. The PLC moisture controller compares the moisture value with the target moisture value and promptly issues an execution command for appropriate moisture to the system workstation based on the comparison. The system workstation calculates the basic adjustment value based on the time and amount of material fed to the inlet of the first mixer 5 and the second mixer 9, or the change in the initial moisture of the sintering mixture. This value is then combined with the on-site batching information and production information, and the actual adjustment value is obtained through data processing. The water supply is regulated by the first electric regulating valve, the first electromagnetic flow meter, the first pressure transmitter, the first shut-off valve, and the first manual regulating valve installed on the hot water supply pipeline 13, and the third electric regulating valve, the third electromagnetic flow meter, the third pressure transmitter, the third shut-off valve, and the third manual regulating valve installed on the steam supply pipeline 15.

[0039] When the sintering production is running normally and stably, select the automatic mode. The water replenishment system will automatically adjust the water addition amount according to the real-time moisture data and preset target. When an abnormality occurs or adjustment is required, switch to manual mode and adjust the water addition amount directly through the operation interface of the two touch screen operation terminals placed at the mixing site.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sinter mix water replenishment system characterized by: The system comprises a first mixer (5), a second mixer (9), a PLC moisture controller and a system workstation connected to the PLC moisture controller; a first anti-collision device (2), a first material leveling device (3) and a first microwave moisture meter (4) are sequentially arranged on a feeding belt in front of the first mixer (5); a second anti-collision device (6), a second material leveling device (7) and a second microwave moisture meter (8) are sequentially arranged on a first discharging belt behind the first mixer (5); a third anti-collision device (10), a third material leveling device (11) and a third microwave moisture meter (12) are sequentially arranged on a second discharging belt behind the second mixer (9); the first microwave moisture meter (4), the second microwave moisture meter (8) and the third microwave moisture meter (12) are connected to the PLC moisture controller; a water supplement pipeline of the first mixer (5) comprises a hot water supplement pipeline (13) and a normal temperature water supplement pipeline (14); a water supplement pipeline of the second mixer (9) is a steam water supplement pipeline (15).

2. A sinter mix water replenishment system according to claim 1 wherein: A first electric regulating valve, a first electromagnetic flowmeter, a first pressure transmitter, a first shut-off valve and a first manual regulating valve connected to the system workstation are arranged on the hot water supplement pipeline (13); a second electric regulating valve, a second electromagnetic flowmeter, a second pressure transmitter, a second shut-off valve and a second manual regulating valve connected to the system workstation are arranged on the normal temperature water supplement pipeline (14). ​ 3. The sintering mix water replenishment system of claim 1, wherein: A third electric regulating valve, a third electromagnetic flowmeter, a third pressure transmitter, a third shut-off valve and a third manual regulating valve connected to the system workstation are arranged on the steam water supplement pipeline (15).

4. The sinter mix water replenishment system of claim 1, wherein: The system workstation comprises one industrial computer placed in a central control room and two touch screen operation terminals placed in a mixing site.

5. The sinter mix water replenishment system of claim 1, wherein: The normal temperature water supplement pipeline (14) serves as a backup water supplement pipeline.

6. The sinter mix water replenishment system of claim 1, wherein: The first anti-collision device (2), the first material leveling device (3), the second anti-collision device (6), the second material leveling device (7), the third anti-collision device (10) and the third material leveling device (11) are connected to the system workstation.

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