Blast furnace slag runner head cooling protection device

Abstract

The utility model relates to a cooling protection device for a blast furnace slag runner head, and belongs to the technical field of blast furnace ironmaking slag runner head equipment. According to the technical scheme, a cooling water tank (1) is of a U-shaped structure matched with a slag trough head (8), the cooling water tank (1) is poured on the slag trough head (8) through pouring materials, one end of the cooling water tank (1) is welded to a water inlet connecting steel pipe (2), the water inlet connecting steel pipe (2) is in threaded connection with a water inlet quick connector (3), the other end of the cooling water tank (1) is welded to a water outlet connecting steel pipe (4), and the water outlet connecting steel pipe (4) is in threaded connection with the slag trough head (8). The water outlet connecting steel pipe (4) is in threaded connection with the water outlet quick connector (5), and a plurality of partition plates (7) are welded in the cooling water tank (1); a plurality of partition plates (7) welded in the cooling water tank (1) divide the interior of the cooling water tank (1) into an S-shaped cooling water flowing channel. The slag runner head can be prevented from being eroded, the service life of the slag runner head is prolonged, and the blast furnace slag punching effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blast furnace slag channel head cooling protection device belongs to metallurgical industry blast furnace ironmaking slag channel head equipment technical field. BACKGROUND

[0002] The slag channel head of general blast furnace uses the refractory material to pour and forms, and with the extension of service time, the refractory material can be eroded, the channel head is wide and the slag flow deviates from the center line, causes the slag flow to exceed the granulation head or the punching range of the punching box and further causes the granulation tower to pile up the slag or the slag channel to turn over the slag, and if the simple repair method is handled, the effective service time is short and needs frequent repair, and further waste the refractory material, and if the slag channel head is poured again, the service time is long from the material deduction, and for the blast furnace with two or below iron mouth number, it is undoubtedly unrealistic, so, the slag channel head with similar service life as the main channel is urgently needed, and the repair does not affect the normal production. CONTENT

[0003] The utility model discloses a blast furnace slag channel head cooling protection device can avoid the erosion of slag channel head, prolong the service life of slag channel head, improve the blast furnace slag punching effect, and solve the problems in the background art.

[0004] The technical scheme of the utility model is:

[0005] A blast furnace slag channel head cooling protection device, containing cooling water tank, water inlet connecting steel pipe, water inlet quick coupling, water outlet connecting steel pipe, water outlet quick coupling and baffle, the cooling water tank is the U type structure that cooperates with the slag channel head, the cooling water tank 1 is poured on the slag channel head through the castable, one end of the cooling water tank 1 is welded with the water inlet connecting steel pipe, the water inlet connecting steel pipe is connected with the water inlet quick coupling through the thread, the other end of the cooling water tank is welded with the water outlet connecting steel pipe, the water outlet connecting steel pipe is connected with the water outlet quick coupling through the thread, and the cooling water tank is welded with several baffle plates inside.

[0006] The several baffle plates welded inside the cooling water tank divide the cooling water tank into an S-shaped cooling water flow channel.

[0007] The anchor hook is welded on the tank body bottom surface of the cooling water tank.

[0008] The castable thickness on the tank body bottom surface of the cooling water tank is 50-150mm.

[0009] The utility model discloses an advantageous effect is: the utility model simple structure, convenient and fast, install this device in the ditch head when repairing slag ditch, connect the in and out cooling water when normal production uses, take away the heat through the cooling water, make the slag form a layer of slag skin in this device, not only can prolong the service life of slag ditch ditch head, reduce ton iron cost, but also can guarantee that slag flow center line always overlaps with the center line of granulation head or punching box, and then improve the problem that the punching efficiency declines and appears granulation tower heap slag or punch slag ditch heap slag, reduce the safety risk of post worker to enter granulation tower or punch slag ditch and clean the accumulated slag, and reduce the phenomenon of reducing wind caused by cleaning accumulated slag and forcedly prolonging the iron interval. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the front view of the utility model;

[0011] Figure 2 It is the left view of the utility model;

[0012] Figure 3 It is the A-A overhead sectional view of the utility model;

[0013] Figure 4 It is the B-B front sectional view of the utility model;

[0014] Figure 5 It is the installation combination drawing of the utility model and slag ditch;

[0015] In the drawing: cooling water tank 1, water inlet connecting steel pipe 2, water inlet quick connector 3, water outlet connecting steel pipe 4, water outlet quick connector 5, anchor hook 6, partition 7, slag ditch head 8, slag ditch bottom surface 9, tank bottom surface 10. DETAILED DESCRIPTION

[0016] The utility model is further described by examples in combination with the drawings.

[0017] Referring to the drawings Figures 1-5 A blast furnace slag ditch head cooling protection device, containing cooling water tank 1, water inlet connecting steel pipe 2, water inlet quick connector 3, water outlet connecting steel pipe 4, water outlet quick connector 5 and partition 7, cooling water tank 1 is the U type structure with slag ditch head 8 cooperation, cooling water tank 1 is poured on the slag ditch head 8 through the castable, one end of cooling water tank 1 is welded with water inlet connecting steel pipe 2, water inlet connecting steel pipe 2 is connected with water inlet quick connector 3 through screw thread, the other end of cooling water tank 1 is welded with water outlet connecting steel pipe 4, water outlet connecting steel pipe 4 is connected with water outlet quick connector 5 through screw thread, several partitions 7 are welded inside cooling water tank 1.

[0018] In the embodiment, referring to the drawings Figures 1-5The utility model relates to a device for improving the effect of slag flushing, comprising a cooling water tank 1, an inlet water connecting steel pipe 2, an inlet water quick connector 3, an outlet water connecting steel pipe 4, an outlet water quick connector 5, an anchor hook 6 and a partition plate 7, wherein:

[0019] The cooling water tank 1 is a U-shaped groove structure with an empty inner cavity, which is welded by steel plates with a thickness of not less than 10 mm, and the anchor hook 6 is welded on the bottom surface 10 of the tank body of the cooling water tank 1 to facilitate the fixation of the castable.

[0020] The inlet water connecting steel pipe 2 and the outlet water connecting steel pipe 4 are plain carbon steel pipes with a diameter of not less than 40 mm, one end of the cooling water tank 1 is welded with the inlet water connecting steel pipe 2, the inlet water connecting steel pipe 2 is connected with the inlet water quick connector 3 through threading, the other end of the cooling water tank 1 is welded with the outlet water connecting steel pipe 4, and the outlet water connecting steel pipe 4 is connected with the outlet water quick connector 5 through threading.

[0021] The partition plate 7 is welded inside the cooling water tank 1, and the partition plate 7 makes the flow direction of the cooling water in the cooling water tank 1 into an S shape. The cooling water is low-pressure cooling water for the second set of blast furnace tuyere, which can ensure the cooling strength of the cooling water without increasing redundant booster equipment.

[0022] When repairing the slag channel, it is installed at the channel head position, the tank bottom surface 10 of the cooling water tank 1 is 50-150 mm lower than the normal channel head bottom surface 9, different data can be selected according to the size of the blast furnace capacity, the larger the capacity, the larger the selected data, and vice versa, which facilitates the pouring of 50-150 mm thick refractory material on the tank bottom surface 10 of the cooling water tank 1.

[0023] When put into use, two hoses are connected with the inlet water quick connector 3 and the outlet water quick connector 5 respectively, the inlet water connecting steel pipe 2 is connected with the inlet water quick connector 3, and the outlet water connecting steel pipe 4 is connected with the outlet water quick connector 5, after the connection is completed, water is cooled, the cooling water enters the cooling water tank 1 through the inlet water connecting steel pipe 2, the partition plate 7 inside the cooling water tank 1 makes the flow direction of the cooling water in the cooling water tank 1 into an S shape, which improves the heat exchange efficiency, and in the process of slagging, the heat of the liquid slag is taken away by the cooling water, forming a layer of slag skin on the side wall and the bottom of the cooling water tank 1 to protect the cooling water tank from being washed away.

[0024] When the refractory material of the tank bottom surface 10 of the cooling water tank 1 is found to be too thin in the later use, the remaining refractory material is deducted and re-poured from the upstream of the channel head to keep the connection position between the cooling water tank 1 and the slag channel 8 tight.

Claims

1. A cooling protection device for a taphole of a blast furnace, characterized in that: The cooling water tank (1), the water inlet connecting steel pipe (2), the water inlet quick connector (3), the water outlet connecting steel pipe (4), the water outlet quick connector (5) and the partition plate (7) are included, the cooling water tank (1) is a U-shaped structure matched with the slag channel head (8), the cooling water tank (1) is poured on the slag channel head (8) through the castable, one end of the cooling water tank (1) is welded with the water inlet connecting steel pipe (2), the water inlet connecting steel pipe (2) is connected with the water inlet quick connector (3) through screw threads, the other end of the cooling water tank (1) is welded with the water outlet connecting steel pipe (4), the water outlet connecting steel pipe (4) is connected with the water outlet quick connector (5) through screw threads, and the cooling water tank (1) is internally welded with a plurality of partition plates (7).

2. A device for protecting the head of a trough of a blast furnace slag chute according to claim 1, characterized in that: The plurality of partition plates (7) welded in the cooling water tank (1) divide the cooling water tank (1) into an S-shaped cooling water flow channel.

3. A device for protecting the head of a trough of a blast furnace from cooling according to claim 1, characterized in that: An anchor hook (6) is welded on the tank bottom surface (10) of the cooling water tank (1).

4. A device for protecting the tip of a trough of a blast furnace from cooling according to claim 1, characterized in that: The thickness of the castable on the tank bottom surface (10) of the cooling water tank (1) is 50-150 mm.

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