Slag blocking device, system and method suitable for use in a metallurgical lead smelting bottom-blown furnace

Abstract

The application belongs to the technical field of non-ferrous metal smelting. Disclosed are a slag blocking device suitable for a metallurgical lead smelting bottom blowing furnace, a slag blocking system suitable for the metallurgical lead smelting bottom blowing furnace and a slag blocking method suitable for the metallurgical lead smelting bottom blowing furnace. The slag blocking device comprises a fixed base, a truss, a hanging frame and a barrel. The first end of the truss is rotatably supported on the fixed base. The hanging frame is rotatably arranged at the second end of the truss. The first rotary shaft and the second rotary shaft are both in a vertical state. The barrel is rotatably supported on the hanging frame. The barrel is provided with a feeding driving part. The front end of the barrel is provided with a plug corresponding to the slag port of the kiln. The sidewall of the barrel is provided with a feeding opening. The plugging material in the barrel is pushed out from the end of the plug by the feeding driving part. The application has a separate structure, has a low requirement for the installation environment, is contracted as a whole when the device is stopped, and occupies a very small space. The application can be remotely controlled, is far away from the harsh environment of the slag port, and has a greatly improved safety performance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of non-ferrous metal smelting, and particularly relates to a slag blocking device, system and method suitable for a metallurgical lead smelting bottom blowing furnace. BACKGROUND

[0002] The bottom blowing furnace belongs to a molten bath smelting metallurgical furnace and is mainly used for molten bath slagging of lead smelting raw materials. At the end of each smelting cycle of the furnace, high-lead slag in the molten bath needs to be discharged from the furnace. The traditional slag blocking device is manually blocked on site, which makes the working environment of the operator poor and the labor intensity large, and meanwhile, the operator has a safety hazard of being scalded by the splashed high-temperature molten slag. The molten slag temperature of the hearth of the bottom blowing furnace reaches 1050-1150 DEG C, and the production is usually intermittent, and the post operation is also intermittent, such as feeding-discharging slag-cleaning the feeding chute-cleaning the slag hole and slag channel-entering the next furnace for feeding and slagging. The cleaning of the feeding chute, the slag hole and the slag channel all need to use forced water cooling, and if the water amount is not properly controlled, the water may flow into the hearth to cause explosion or the water vapor may directly injure people. The existing suspended slag blocking device is not fixed firmly due to the difference in expansion coefficients from the furnace, which affects the converter and other devices.

[0003] The newly added lead smelting production system of the applicant has been in normal operation. As one of the largest single series lead smelting production systems in the world, the furnace body has a large processing capacity, the bottom blowing furnace is φ5m*28m, the daily processing raw material is about 2700 tons, the slag amount is large, and the slag is easy to splash, so manual slag blocking becomes a big problem, which affects the normal production. Therefore, it is urgent to design a corresponding slag blocking device to solve the safety hazard of the slag blocking work of the metallurgical lead smelting bottom blowing furnace. SUMMARY

[0004] The application aims at the above problems and deficiencies, and provides a slag blocking device, system and method suitable for a metallurgical lead smelting bottom blowing furnace, which has low requirements for the installation environment on site, the device as a whole shrinks when the furnace is stopped, occupies very small space on site, does not affect other operations, and can improve the blocking effect.

[0005] To achieve the above purpose, the technical scheme adopted is:

[0006] A slag blocking device suitable for a metallurgical lead smelting bottom blowing furnace, comprising:

[0007] A fixed base;

[0008] A truss, a first end of the truss is supported on the fixed base through a first rotating shaft, and a first driving part for driving the truss to rotate is arranged on the fixed base;

[0009] A hanger is arranged on the second end of the truss through a second rotating shaft, a second driving part for driving the rotating action of the hanger is arranged on the fixed base or truss, and the axes of the first rotating shaft and the second rotating shaft are both in vertical state.

[0010] A material cylinder is supported on the hanger through a third rotating shaft, a third driving part for adjusting the rotating action of the material cylinder is arranged between the material cylinder and the hanger, and the axis of the third rotating shaft is in horizontal state.

[0011] The material cylinder is provided with a feeding driving part, the front end of the material cylinder is provided with a plug corresponding to the slag port of the kiln, the sidewall of the material cylinder is provided with a feeding port, and the feeding driving part pushes the plugging material in the material cylinder to flow out from the end of the plug.

[0012] According to the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace, preferably, the first rotating shaft is fixedly arranged on the fixed base, the upper end of the first rotating shaft is provided with a first supporting plate, the first rotating shaft and the second rotating shaft are both pivotally connected with the truss, the top of the second rotating shaft is fixedly provided with a second supporting plate, and the hanger is fixedly arranged at the bottom of the second rotating shaft.

[0013] According to the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace, preferably, the second driving part is a first forward and reverse rotation adjusting lead screw pivotally arranged between the first supporting plate and the second supporting plate, the pivot shafts at both ends of the first forward and reverse rotation adjusting lead screw are eccentrically arranged relative to the first rotating shaft and the second rotating shaft, and the third driving part is a second forward and reverse rotation adjusting lead screw arranged between the material cylinder and the second supporting plate or the hanger.

[0014] According to the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace, preferably, the first forward and reverse rotation adjusting lead screw and the second forward and reverse rotation adjusting lead screw both include a forward rotation screw rod, a reverse rotation screw rod and an adjusting lead pipe, and the two ends of the adjusting lead pipe are respectively provided with a forward rotation internal thread and a reverse rotation internal thread.

[0015] According to the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace, preferably, the first driving part and the feeding driving part are both air cylinders, hydraulic cylinders or electric push rods.

[0016] According to the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace, preferably, the first driving part includes a driving motor, a gear ring and a driving gear arranged at the output end of the driving motor, the driving motor is arranged on the fixed base, the gear ring is coaxially arranged with the first rotating shaft, the gear ring is fixed on the truss, and the driving gear is matched and engaged with the gear ring.

[0017] According to the application, the plug device for the bottom blowing furnace for smelting lead is provided with at least one supporting column between the first supporting plate and the fixed base.

[0018] According to the application, the plug device for the bottom blowing furnace for smelting lead is provided with at least one supporting column between the first supporting plate and the fixed base.

[0019] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0020] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0021] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0022] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0023] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0024] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0025] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0026] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0027] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0028] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0029] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0030] The application discloses a plug device for a bottom blowing furnace for smelting lead.

[0031] The overall structure of the application can adjust the height according to the field environment, accurately position, and at the same time, the structure can be constrained through the first positive and negative rotation adjusting lead screw and the second positive and negative rotation adjusting lead screw, so that the adjustment of the working state and the non-working state can be realized only by using the first driving part, the error of action is greatly reduced, and the reliability is better.

[0032] The application is an independent structure, and the requirement for the field installation environment is low. When stopping, the whole device is contracted, the space occupied in the field is very small, other operations are not affected, the plugging effect is improved, the control range of the application is far away from the slag port, the safety performance is greatly improved, manual close operation is not needed, and the hidden danger of the high temperature environment of the slag port to personal safety is avoided.

[0033] The whole plugging process of the application is more reliable, the overall structure can be adjusted to obtain the accurate position of the plug and the slag port, the switching of different stations can be completed through one driving part, compared with the existing equipment, the application effect is greatly improved, the slag port can be effectively plugged through the plug, the refractory mortar and the feeding driving part, manual close operation is not needed, the long-term plugging problem is solved, and the application effect in the super large lead smelting production system is particularly important. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments of the application will be briefly introduced below. The drawings are only used to show some embodiments of the application, and the whole embodiments of the application are not limited to this.

[0035] Figure 1 It is a structure schematic view of the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace in the embodiments of the application.

[0036] Figure 2 It is one of the structure schematic views of the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace in the embodiments of the application.

[0037] Figure 3 It is the second structure schematic view of the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace in the embodiments of the application.

[0038] Figure 4 It is a structure schematic view of the plug in the embodiments of the application.

[0039] Serial number in the figure:

[0040] 100 is a fixed base, 101 is a supporting column, and 102 is a first driving part.

[0041] 200 is a truss, 201 is a first rotating shaft, 202 is a second rotating shaft, 203 is a first supporting plate, 204 is a second supporting plate, 205 is a first forward and reverse rotation adjusting lead screw;

[0042] 300 is a hanger, 301 is a material cylinder, 302 is a feeding driving part, 303 is a feeding opening, 304 is a second forward and reverse rotation adjusting lead screw, 305 is a third rotating shaft;

[0043] 400 is a plug, 401 is a frustum segment, 402 is a cylindrical segment, 403 is a connecting flange;

[0044] 501 is a bottom blowing furnace, 502 is a slag opening, 503 is a chute, 504 is a dust collecting hood. DETAILED DESCRIPTION

[0045] In the following, the example schemes of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings of the specific embodiments of the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the common meanings understood by those skilled in the art.

[0046] In the description of the present application, it should be understood that the expressions of "first", "second" are used to describe the elements of the present application, and do not represent any order, quantity or importance limitation, but only to distinguish one component from another.

[0047] It should be noted that when an element is described as "connected", "coupled" or "linked" to another element, it can mean that it is directly connected, coupled or linked to the other element, but it should be understood that there can be intermediate elements between the two. That is, it covers both direct connection and indirect connection.

[0048] It should be noted that the use of "one" or "a" and similar words does not necessarily mean a quantity limitation. The words "including" or "containing" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, and do not exclude other elements or objects.

[0049] It should be noted that the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right" and the like are only used to represent the relative position relationship, which is for the convenience of describing the present application, and the described device or element does not necessarily have a specific orientation, and is not necessarily constructed and operated in a specific orientation. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0050] Example one: see Figures 1-4The application discloses a slag blocking device suitable for a metallurgical lead smelting bottom blowing furnace, which comprises a fixed base 100, a truss 200, a hanging frame 300 and a material cylinder 301. The fixed base can be a structure with a certain height or a structure capable of lifting. The first end of the truss 200 is supported on the fixed base 100 through a first rotating shaft 201, and a first driving part 102 for driving the truss 200 to rotate is arranged on the fixed base 100. The hanging frame 300 is arranged on the second end of the truss 200 through a second rotating shaft 202, and a second driving part for driving the hanging frame 300 to rotate is arranged on the fixed base 100 or the truss 200. The axes of the first rotating shaft 201 and the second rotating shaft 202 are in a vertical state. The material cylinder 301 is supported on the hanging frame 300 through a third rotating shaft 305, and a third driving part for adjusting the rotating action of the material cylinder 301 is arranged between the material cylinder 301 and the hanging frame 300. The axis of the third rotating shaft is in a horizontal state. A feeding driving part 302 is arranged in the material cylinder 301. The front end of the material cylinder 301 is provided with a plug 400 corresponding to a slag port 502 of a kiln. A feeding port 303 is arranged on the side wall of the material cylinder 301. The feeding driving part 302 pushes the blocking material in the material cylinder 301 to flow out from the end of the plug 400.

[0051] The structures of the first driving part, the second driving part and the third driving part can adopt various different forms. The three can be three power structures that act independently of each other. However, in order to reduce the size error caused by the action of each driving part, reduce the cost, facilitate the action control and the adjustment of the positioning, the second driving part of the application acts in a mode relying on the first driving part. Specifically,

[0052] The first rotating shaft 201 is fixedly arranged on the fixed base 100, and the upper end of the first rotating shaft 201 is provided with a first supporting plate 203. The first rotating shaft 201 and the second rotating shaft 202 are pivotally connected with the truss. The top of the second rotating shaft 202 is fixedly provided with a second supporting plate 204, and the hanging frame is fixedly arranged at the bottom of the second rotating shaft.

[0053] The second driving part is a first forward and reverse rotation adjusting lead screw 205 pivotally arranged between the first supporting plate and the second supporting plate. The pivot shafts at the two ends of the first forward and reverse rotation adjusting lead screw are eccentrically arranged relative to the first rotating shaft and the second rotating shaft. The third driving part is a second forward and reverse rotation adjusting lead screw 206 arranged between the material cylinder and the second supporting plate or the hanging frame. The first forward and reverse rotation adjusting lead screw 205 and the second forward and reverse rotation adjusting lead screw 206 each comprise a forward rotation screw, a reverse rotation screw and an adjusting lead pipe. The two ends of the adjusting lead pipe are respectively provided with forward rotation internal threads and reverse rotation internal threads.

[0054] The first driving part 102 and the feeding driving part 302 are air cylinders, hydraulic cylinders or electric push rods, and in the embodiment, the hydraulic cylinders are preferably adopted. Meanwhile, the feeding driving part 302 also adopts the hydraulic cylinder.

[0055] In the above structure, when the first driving part operates, the truss will rotate. Due to the relative position relationship between the first support plate and the second support plate, after the first forward and reverse rotation adjusting screw is adjusted to the position, the rotation of the hanger, the cylinder and the second support plate will be synchronized with the operation of the first driving part, so that the two degrees of freedom can be controlled by one driving part, the alignment accuracy of the plug at the end of the cylinder and the slag port is guaranteed, and the practicability is better.

[0056] For the structure of the first driving part, other structure forms can also be adopted. For example, the first driving part 102 comprises a driving motor, a gear ring and a driving gear arranged at the output end of the driving motor. The driving motor is arranged on the fixed base. The gear ring is coaxially arranged with the first rotating shaft. The gear ring is fixed on the truss. The driving gear is matched and engaged with the gear ring.

[0057] Further, in order to guarantee the effective connection between the first support plate and the fixed base, at least one support column 101 is arranged between the first support plate 203 and the fixed base 100 of the application, so that the structure of the first support plate is more stable.

[0058] Further, the plug 400 of the application comprises a conical frustum section 401 and a cylindrical section 402 which are coaxially connected. A connecting flange plate 403 is arranged at the end of the conical frustum section 401. The plug 400 is connected to the end of the cylinder 301 through the connecting flange plate 403. An opening and closing door is arranged at the charging port of the cylinder 301. The plug can be replaced according to the actual situation to meet the slag port of the kiln with different structure forms.

[0059] Embodiment two: The application also discloses a slag plugging system suitable for a metallurgical lead smelting bottom blowing furnace, which comprises the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace, a chute 503, a dust collecting hood 504 and a controller. The controller is used for controlling the actions of the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace and the negative pressure dust collecting and removing system. The slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace is arranged correspondingly to the slag port 502 of the kiln. The chute 503 is correspondingly arranged on the lower side of the slag port 502 of the kiln. The dust collecting hood 504 is correspondingly arranged on the upper side of the slag port 502 of the kiln. The dust collecting hood 504 is connected with the negative pressure dust collecting and removing system.

[0060] Embodiment three: The application also discloses a slag plugging method suitable for a metallurgical lead smelting bottom blowing furnace. The slag is plugged by using the slag plugging system suitable for the metallurgical lead smelting bottom blowing furnace. The method comprises the following steps:

[0061] Debugging the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace and returning the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace to the initial standby state; as Figure 2 The position shown in FIG. 6, at this time in the retracted state, the overall volume is small, and the space occupied is small.

[0062] When the bottom blowing furnace discharges slag through the chute, the dust hood and the negative pressure dust collection system are started; after the slag discharge is completed, the refractory sealing material is added into the barrel, and the plug at the front end of the barrel is driven to correspond to the slag port; as Figure 3 The position shown in FIG. 6, at this time in the retracted state, the overall volume is small, and the space occupied is small.

[0063] Start the feeding drive part to push the refractory sealing material into the slag port;

[0064] After the slag plugging is completed, the slag plugging device suitable for the metallurgical lead smelting bottom blowing furnace is driven to return to the initial standby state.

[0065] The preferred embodiments for implementing the present application have been described in detail above, but it should be understood that the role of these embodiments is only for example, and does not limit the scope, application or structure of the present application in any way. The scope of protection of the present application is defined by the appended claims and their equivalents. Those skilled in the art can make many changes to the foregoing embodiments under the teaching of the present application, and these changes all fall within the scope of protection of the present application.

Claims

1. A slag-blocking device suitable for a bottom-blown furnace in lead smelting, characterized in that, include: Fixed base; A truss, the first end of which is supported on the fixed base by a first slewing shaft, and a first drive unit for driving the truss to rotate is provided on the fixed base; A hanger, wherein the hanger is mounted at the second end of the truss via a second rotating shaft, and a second drive unit for driving the hanger to rotate is provided on the fixed base or the truss; the axes of both the first and second rotating shafts are vertical; and A material cylinder is supported on the bracket by a third rotating shaft. A third drive unit for adjusting the rotation of the material cylinder is provided between the material cylinder and the bracket. The axis of the third rotating shaft is horizontal. The material cylinder is equipped with a feeding drive unit, and the front end of the material cylinder is equipped with a plug corresponding to the slag outlet of the kiln. The side wall of the material cylinder is equipped with a feeding port. The feeding drive unit pushes the sealing material in the material cylinder to flow out from the end of the plug. The first rotating shaft is fixedly mounted on the fixed base, and a first support plate is provided at the upper end of the first rotating shaft; both the first rotating shaft and the second rotating shaft are pivotally connected to the truss, a second support plate is fixedly mounted at the top of the second rotating shaft, and the hanger is fixedly mounted at the bottom of the second rotating shaft; The second drive unit is a first forward and reverse rotation adjusting screw pivotally disposed between the first support plate and the second support plate, wherein the pivot shafts at both ends of the first forward and reverse rotation adjusting screw are eccentrically arranged relative to the first rotation shaft and the second rotation shaft; the third drive unit is a second forward and reverse rotation adjusting screw disposed between the material cylinder and the second support plate or the hanger. The plug includes a frustum section and a cylindrical section coaxially connected. A connecting flange is provided at the end of the frustum section. The plug is connected to the end of the material cylinder through the connecting flange. An opening and closing door is provided at the feeding port of the material cylinder.

2. The slag-blocking device for a bottom-blown furnace in lead smelting according to claim 1, characterized in that, The first and second forward and reverse rotation adjusting screws each include a forward rotation screw, a reverse rotation screw, and an adjusting screw tube. The two ends of the adjusting screw tube are respectively provided with a forward rotation internal thread and a reverse rotation internal thread.

3. The slag-blocking device for a bottom-blown furnace in lead smelting according to any one of claims 1-2, characterized in that, Both the first drive unit and the feeding drive unit are pneumatic cylinders, hydraulic cylinders, or electric push rods.

4. The slag-blocking device for a bottom-blown furnace in lead smelting according to any one of claims 1-2, characterized in that, The first drive unit includes a drive motor, a gear ring, and a drive gear disposed at the output end of the drive motor. The drive motor is disposed on the fixed base. The gear ring is coaxially arranged with the first rotating shaft. The gear ring is fixed on the truss. The drive gear meshes with the gear ring.

5. The slag-blocking device for a bottom-blown furnace in lead smelting according to any one of claims 1-2, characterized in that, At least one support column is provided between the first support plate and the fixed base.

6. A slag-blocking system suitable for bottom-blown furnaces in metallurgical lead smelting, characterized in that, include: The slag-blocking device for a bottom-blown furnace for lead smelting as described in any one of claims 1-5 is configured to correspond to the slag opening of the furnace. The chute is located below the slag opening of the kiln. A dust collection hood is installed above the slag inlet of the kiln, and the dust collection hood is connected to a negative pressure dust collection and removal system; and The controller is used to control the operation of the slag-blocking device and negative pressure dust collection system for the bottom blowing furnace of metallurgical lead smelting.

7. A slag-blocking method suitable for a bottom-blown furnace in metallurgical lead smelting, comprising using the slag-blocking system for a bottom-blown furnace in metallurgical lead smelting as described in claim 6, characterized in that, Specifically, the following steps are included: Debug the slag-blocking device suitable for the bottom blowing furnace of metallurgical lead smelting, and return the slag-blocking device suitable for the bottom blowing furnace of metallurgical lead smelting to the initial standby state; When the bottom-blown furnace discharges slag through the chute, the dust collection hood and negative pressure dust collection and removal system are activated; after the slag discharge is completed, refractory mud is added into the material cylinder to seal it, and the plug at the front end of the material cylinder is driven to correspond to the slag opening. Start the feed drive unit to push the refractory mortar sealing material into the slag inlet; After the slag plugging is completed, the slag plugging device suitable for bottom blowing furnaces in metallurgical lead smelting is driven back to the initial standby state.

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