CN210367741U

CN210367741U - Temporary skimmer

Info

Publication number: CN210367741U
Application number: CN201920760517.9U
Authority: CN
Inventors: 蔺艳辉; 王建强; 杨俊章
Original assignee: Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-04-21
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses an interim skimmer belongs to iron-smelting blast furnace corollary equipment, including fire baffle, insulation can and the iron pipe way that advances that sets up at insulation can one side lower extreme, fire baffle is made by refractory material and steel sheet combination, and fire baffle passes through connecting device slope and sets up on insulation can enterprising iron pipe way one side, and fire baffle passes through the relative insulation can of connecting device and reciprocates, and fire baffle slope is placed and is blocked into iron pipe way outside advancing when fire baffle descends, the utility model discloses can discharge the slag iron safely, reduce energy consumption, avoided skimmer's jam damage, improved work efficiency, protection workman health safety has certain economic benefits.

Description

Temporary skimmer

Technical Field

The utility model relates to a skimmer, in particular to an temporary skimmer, which belongs to the iron-making blast furnace corollary equipment.

Background

Molten iron and slag are the main products produced by blast furnaces. During the tapping process of the blast furnace, slag iron, namely slag and molten iron are discharged from a tapping hole simultaneously. The slag skimmer is a device for separating iron slag, and can work normally to directly determine whether the blast furnace production can be continuously carried out. In the periods of, for example, the blast furnace is opened and the special furnace conditions are recovered, such as the blast furnace accretion and the like, because the fluidity of the slag-iron mixed liquid is poor and the separation effect is poor, the slag and the molten iron are directly separated by the skimmer, so that the passage hole below the skimmer is stuck, the tapping condition in front of the furnace is interrupted, and even the blast furnace is forced to stop blowing. In order to solve the problem, the conventional treatment method is to make the slag and the molten iron directly flow into a slag storage container or enter a water slag flushing process through a slag runner without passing through a slag skimmer. However, the slag storage container is generally made of iron, and if slag with more iron flows into the slag storage container, the slag storage container is easily burnt through, and even a conveying channel of the slag storage container is burnt out. In addition, if the slag is treated by a water slag flushing process, the slag is easy to explode after meeting water due to high iron content, so that potential safety hazards are aggravated. If the slag iron which is not separated is directly treated as slag, the iron loss of the blast furnace is increased, and the economic loss is serious. In addition, in the normal production process of the blast furnace, short-term or long-term poor slag-iron separation effect may be caused due to poor slag-iron separation effect of smelting ore species such as vanadium-titanium ore smelting or the limitation of poor raw fuel conditions such as poor coke quality, higher furnace temperature level control, high slag-iron viscosity and poor separation effect, slag after passing through the skimmer still contains a large amount of molten iron, and if the molten iron directly enters a slag storage container or a water-flushing slag process is used, economic loss and potential safety hazard are also caused.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a temporary skimmer used during furnace opening, furnace condition recovery and other special conditions.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides an interim skimmer, includes fire-resistant baffle, insulation can and sets up into iron pipe way in insulation can one side lower extreme, and fire-resistant baffle is made by refractory material and steel sheet combination, fire-resistant baffle passes through connecting device slope setting and is in iron pipe way one side is gone up to the insulation can, fire-resistant baffle passes through connecting device is relative the insulation can reciprocates, when fire-resistant baffle descends fire-resistant baffle slope is placed and is blocked into iron pipe way in the iron pipe way outside.

The utility model discloses technical scheme's further improvement lies in: the steel plate of the fire-resistant baffle is uniformly distributed with protrusions with barbs, the fire-resistant material is poured on the steel plate, the protrusions fix the fire-resistant material, and the steel plate is opposite to the iron inlet pipeline.

The utility model discloses technical scheme's further improvement lies in: the connecting device comprises a pulley fixed on the insulation can body and a steel wire rope, one end of the steel wire rope is fixed at the upper end of the fire-resistant baffle, and the other end of the steel wire rope is connected with the lifting device through the pulley.

The utility model discloses technical scheme's further improvement lies in: the connecting device comprises a supporting rod, one end of the supporting rod is hinged to the baffle, the other end of the supporting rod is hinged to the heat preservation box body, and the supporting rod is connected with a traction device.

The utility model discloses technical scheme's further improvement lies in: the iron inlet pipeline is communicated with an iron supporting ditch in the heat insulation box, a sand dam is arranged on the iron supporting ditch, a slag blocking plate is arranged on one side of the sand dam, a passageway hole is formed in one side, far away from the sand dam, of the slag blocking plate, a fixing frame is arranged at the top of the iron supporting ditch, and a slag ditch is arranged on one side of the slag blocking plate.

The utility model discloses technical scheme's further improvement lies in: the heat insulation box is internally provided with a heating device and a temperature monitoring device.

The utility model discloses technical scheme's further improvement lies in: the heating device is an oxygen tank.

The utility model discloses technical scheme's further improvement lies in: the temperature monitoring device is a temperature sensor.

The utility model discloses technical scheme's further improvement lies in: the surface of the insulation can box body is provided with a control panel, the control panel is respectively connected with the temperature rising device and the temperature monitoring device, and the control panel is provided with a display, a switch and an alarm lamp.

Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:

the refractory baffle arranged outside the skimmer prevents the slag-iron mixture from entering the skimmer to block the skimmer, and the service life of the equipment is prolonged. The protrusion arranged in the steel plate increases the contact area with the refractory material, enhances the bonding strength and is convenient for heat conduction. The connecting device uses the steel wire rope and the pulley to move the fire-resistant baffle, so that the working strength is reduced, and the working efficiency is improved. The connecting device uses the supporting rod and the traction device to lift the fire-resistant baffle plate, the fire-resistant baffle plate is convenient to pack up rapidly, and the working efficiency is improved. The iron inlet pipeline is connected with an iron supporting channel in the heat preservation box, so that the slag iron is effectively preserved heat, the temperature of the slag iron is prevented from being reduced, the slag iron becomes sticky and is difficult to move. The temperature rising device arranged in the heat preservation box can heat up the slag iron, so that the fluidity of the slag iron is improved. The temperature monitoring device arranged in the heat preservation box can improve the heating efficiency, avoid heat waste and avoid slag iron from rapidly reducing and blocking the skimmer. The oxygen tank is convenient to replace and supplement, and the cost is saved. The temperature sensor is convenient for improve the temperature monitoring precision, reduces the energy waste. The control panel that insulation can box body surface set up is convenient for the staff to control, and the display shows insulation can interior slag-iron temperature in real time, and the alarm lamp reports to the police when temperature monitoring device detects the temperature and is less than the setting value, helps improving work efficiency.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

wherein, 1, the refractory baffle, 2, the insulation can, 3, advance the iron pipeline, 4, connecting device.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

when the blast furnace is opened and the special furnace condition is recovered during the blast furnace tapping operation, when the fluidity of the slag-iron mixed liquid is poor and the separation effect is poor, a baffle plate is arranged in front of a main skimmer, one side of the baffle plate is made of poured refractory material, the other side of the baffle plate is made of steel plate, protrusions with barbs are uniformly distributed on the steel plate, the baffle plate is obliquely inserted into a main channel, one side of the refractory material faces an iron notch, yellow sand is used for filling and tamping the side gap between the baffle plate and the main channel, the blast furnace iron notch is opened to discharge the slag, the effluent cannot enter the main skimmer when the effluent is blocked by the baffle plate in the main channel, the whole effluent flows into a slag channel, molten iron flows into a branch iron channel through a temporary skimmer on one side of the slag channel, and the slag flows into the slag channel. The slag iron enters the iron inlet pipeline 3 from the slag runner. After entering, the iron slag is accumulated at the baffle plate, the heat preservation box is heated, the temperature of the heat preservation box is raised to 1400 ℃, the baffle plate is pulled up, and the iron slag enters the iron inlet pipeline 3. The iron inlet pipeline 3 is communicated with an iron supporting ditch in the insulation can 2, a sand dam is arranged on the iron supporting ditch, a slag blocking plate is arranged on one side of the sand dam, a passageway hole is formed in one side, away from the first sand dam, of the slag blocking plate, a fixing frame is arranged at the top of the iron supporting ditch, an iron supporting ditch is arranged on the other side of the passageway hole, and a slag ditch is formed in one side of the slag blocking plate. The slag iron enters the supporting iron runner in the heat preservation box 2 from the iron inlet pipeline 3, the slag is shunted with the molten iron at the slag blocking plate, the slag flows to the slag runner channel, the molten iron flows out to the iron outlet through the sand dam and the passageway hole, and the molten iron flows into the supporting iron runner.

Example 1

As shown in figure 1, the temporary skimmer comprises a fire-resistant baffle 1, an insulation box 2 and an iron inlet pipeline 3, wherein the fire-resistant baffle 1 is made by combining a fire-resistant material and a steel plate, the fire-resistant baffle 1 is obliquely arranged on one side of the iron inlet pipeline 3 on the insulation box 2 through a connecting device 4, the fire-resistant baffle 1 vertically moves relative to the insulation box 2 through the connecting device 4, and the fire-resistant baffle 1 is obliquely arranged between the iron inlet pipeline 3 and a slag runner when the fire-resistant baffle 1 descends. The slag iron is blocked by the refractory baffle 1 after entering the slag channel and can not enter the insulation can 2. After the slag iron is accumulated to a certain height, the heat insulation box 2 is heated to raise the temperature in the box, the refractory baffle 1 is removed, and the slag iron enters the iron inlet pipeline 3.

The fire-resistant baffle plate 1 is made by pouring a fire-resistant material on a steel plate, and the fire-resistant material is fixed by the uniformly distributed protrusions with barbs on the steel plate. The bonding strength of the refractory material and the steel plate is enhanced, and the manufacturing cost is also saved.

The connecting device 4 is a supporting rod, one end of the supporting rod is hinged with the fire-resistant baffle 1, the other end of the supporting rod is hinged on the box body of the heat preservation box 2, a traction device is arranged on the supporting rod, the traction device pulls the supporting rod and the fire-resistant baffle 1 hinged on the supporting rod, and the fire-resistant baffle 1 moves up and down relative to the heat preservation box 2. When the traction device works, the refractory baffle 1 is driven by the support rod to rise, and the iron slag enters the iron inlet pipeline 3. The traction device is loosened, the refractory baffle 1 drives the support rod to descend to block the iron inlet pipeline 3, and the iron slag can not enter the iron inlet pipeline 3.

The heat preservation box 2 is internally provided with a heating device and a temperature monitoring device, and the surface of the box body of the heat preservation box 2 is provided with a control panel. The temperature raising device is an oxygen tank, the oxygen tank is opened when the temperature needs to be raised, and oxygen enters the branch iron runner to contact with the hot slag iron to heat the slag iron. The temperature monitoring device is a temperature sensor which detects the temperature of the iron slag and the temperature of the heat preservation box 2 and transmits data to the control panel of the heat preservation box 2. When the temperature is detected to fall, the oxygen tank in the insulation can 2 is opened in time to heat the insulation can 2, the temperature is raised, the fluidity of the slag is prevented from being reduced, and iron blocking is avoided. The control panel is provided with a display, a switch and an alarm lamp. The display is used for showing the temperature data that temperature monitoring device detected, the operating condition of rising temperature device, opening and closing of on off control rising temperature device oxygen jar, triggers the alarm lamp when the slag iron is less than the predetermined temperature and reports to the police and reminds the staff in time to open rising temperature device, and the alarm lamp has avoided the slag iron temperature to hang up insulation can 2 excessively.

Example 2

As shown in fig. 2, the main difference between the embodiment 2 and the embodiment 1 is that the connection device 4 is a pulley and a wire rope fixed on the cabinet of the heat insulation box 2, and the lifting device is a lifting winch. One end of the steel wire rope is fixed at the upper end of the fire-resistant baffle 1, and the other end of the steel wire rope is connected with the hoisting winch through the pulley. The pulley is fixedly hung on a door-shaped frame, and the door-shaped frame is fixed above the heat preservation box 2. And lifting the winch to work, pulling the steel wire rope, lifting the fireproof baffle 1 by the steel wire rope, lifting the fireproof baffle 1, and allowing the iron slag to enter the iron inlet pipeline 3 from the slag runner. The hoisting winch stops working, and the refractory baffle 1 descends to block the iron inlet pipeline 3.

Claims

1. The utility model provides a temporary skimmer, includes fire-resistant baffle (1), insulation can (2) and sets up into iron pipe way (3) at insulation can (2) one side lower extreme, its characterized in that: the fire-resistant baffle (1) is made by combining a fire-resistant material and a steel plate, the fire-resistant baffle (1) is obliquely arranged on one side of the iron inlet pipeline (3) on the heat preservation box (2) through a connecting device (4), the fire-resistant baffle (1) moves up and down relative to the heat preservation box (2) through the connecting device (4), and the fire-resistant baffle (1) is obliquely arranged outside the iron inlet pipeline (3) to block the iron inlet pipeline (3) when the fire-resistant baffle (1) descends.

2. The temporary skimmer of claim 1, wherein: the steel plate of the fire-resistant baffle (1) is uniformly distributed with protrusions with barbs, the fire-resistant material is poured on the steel plate, the protrusions fix the fire-resistant material, and the steel plate is opposite to the iron inlet pipeline (3).

3. A temporary skimmer as claimed in claim 2, wherein: the connecting device (4) comprises a pulley and a steel wire rope which are fixed on the box body of the heat insulation box (2), one end of the steel wire rope is fixed at the upper end of the fire-resistant baffle (1), and the other end of the steel wire rope passes through the pulley and is connected with the lifting device.

4. A temporary skimmer as claimed in claim 2, wherein: the connecting device (4) comprises a supporting rod, one end of the supporting rod is hinged with the fire-resistant baffle (1), the other end of the supporting rod is hinged on the box body of the heat preservation box (2), and the supporting rod is connected with a traction device.

5. A temporary skimmer as claimed in claim 3 or 4, wherein: the iron inlet pipeline (3) is communicated with an iron supporting channel in the heat preservation box (2), a sand dam is arranged on the iron supporting channel, a slag blocking plate is arranged on one side of the sand dam, a passageway hole is formed in one side, far away from the sand dam, of the slag blocking plate, a fixing frame is arranged at the top of the iron supporting channel, and a slag channel is arranged on one side of the slag blocking plate.

6. The temporary skimmer of claim 5, wherein: a heating device and a temperature monitoring device are arranged in the heat preservation box (2).

7. The temporary skimmer of claim 6, wherein: the heating device is an oxygen tank.

8. The temporary skimmer of claim 7, wherein: the temperature monitoring device is a temperature sensor.

9. The temporary skimmer of claim 8, wherein: the surface of the box body of the heat preservation box (2) is provided with a control panel, the control panel is respectively connected with the temperature rising device and the temperature monitoring device, and the control panel is provided with a display, a switch and an alarm lamp.