CN103194572A

CN103194572A - Method for rapidly exchanging tapping hole

Info

Publication number: CN103194572A
Application number: CN2013101544874A
Authority: CN
Inventors: 马传庆; 王学利; 孟宪华; 杨波; 张君平; 杨密平; 刘金玲; 赵冠夫; 范夕荣; 吴兵; 倪友来; 周艳丽; 于学文; 于辉
Original assignee: Laiwu Iron and Steel Group Co Ltd
Current assignee: Laiwu Iron and Steel Group Co Ltd
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2013-07-10

Abstract

The invention discloses a method for rapidly exchanging a tapping hole of an electric furnace by an electric-arc furnace. The method comprises the following steps of 1, supporting a tapping hole tray by a support plate; 2, enabling the tray to fall automatically; 3, cleaning a tubing brick at the bottom part; and 4, positioning and mounting the tapping hole by three persons. By adopting the method for rapidly exchanging the tapping hole of the electric furnace by the electric-arc furnace disclosed by the invention, the mean tapping hole exchange time is reduced to 60 minutes from 120 minutes; the method is smooth in process, safe and effective; hot shutdown of the electric furnace is reduced; and the production efficiency is improved.

Description

A kind of quick replacing tap hole method

Technical field

The present invention relates to the Electric furnace steel making field, specifically, the present invention relates to a kind of method of quick replacing tap holes of electric furnace.

Background technology

Fig. 1 is the tap holes of electric furnace synoptic diagram, among the figure 1 for the pipe brick, 2 for square brick, 3 for the seam that connects material, 4 is pop-jump, existing electric furnace replacing tap hole method is as follows:

Electric furnace change tap hole be operating as molten steel go out clean after, body of heater shakes flat, water is from top cooling, hangs chain sling with overhead traveling crane and falls in the pipe brick and hang up properly cross supporting frame, the dismounting pallet behind the dismounting pallet, is dismantled the pipe brick from top to bottom with drill rod.Temperature height in the pipe brick puts down big, the consuming time length of difficulty with chain sling with overhead traveling crane in the pipe brick; Often have foreign matters such as anti-material, bits and stop up the tap hole phenomenon, cleaning just must be cleared up with instruments such as drill rod and pneumatic picks from top to bottom, and elapsed time is longer, wastes time and energy, and electric furnace prolonged between the hot stopping time.

Summary of the invention

A kind of quick replacing tap hole method that the objective of the invention is problems such as the difficult replacing, the replacing time that exist at above replacing tap hole is long and design.

For achieving the above object, the present invention by the following technical programs:

The invention discloses a kind of electric arc furnace and change the method for tap holes of electric furnace fast, this method comprises following four steps: the first step: supporting plate is held the tap hole pallet; Second step: pallet falls voluntarily; The 3rd step: bottom purge tube brick; The 4th step: three people's location and installation tap holes.

Specific as follows:

1) supporting plate is held the tap hole pallet

Molten steel go out clean after, shake the open hearth body, wait to meet the replacing condition after, utilize supporting plate to hold the tap hole pallet.

2) pallet falls voluntarily

Open locking gear, after the personnel for the treatment of withdraw, open pneumatic supporting plate, the tap hole pallet will fall voluntarily.

3) bottom purge tube brick

The bottom-up cleaning from the bottom is at first carried out spray cooling from bottom square brick and pipe brick gap, and after joint filler was washed down, the pipe brick came off, and after with drill rod foreign matter around the top square brick being cleaned out then tap hole can be installed.

4) many people location and installation tap hole

Check whether the tap hole tumbler pin is intact.Suspender (snubber, chain) is hung up properly, hangs pipe brick support to be placed under the tap hole on the buggy ladle service platform.Overhead traveling crane falls chain with withholding in the tap hole square brick and hangs pipe brick support, extraordinary chamotte is put on the end brick or the end brick forms the inclined-plane with around the pipe brick, prevents that joint filler from leaving out by mistake.

The special messenger commands overhead traveling crane, and 3 people adjust the position with pallet pilot hole and tumbler pin, and crawl lifting treats that the back that fits like a glove, pallet and body of heater tap hole bottom locks with pin, after the pin the other end insured the hole put on steel bar, prevent from giving up the throne.

Filler will be managed the brick mouth and be covered with asbestos, pour joint filler in pipe brick and square brick gap, and use the special tool tamping, and repetitive operation till filling up tamping, is had a snack ramming mass one deck at last, and cleaned out asbestos on top.

Utilize electric arc furnace of the present invention to change the tap holes of electric furnace method fast, change tap hole and reduced to 60 minutes by 120 minutes mean time, process smoothness, safe and effective, and realize changing tap hole and having a snack furnace bottom carrying out synchronously, reduce electric furnace heat and stopped, improved production efficiency.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings;

Fig. 1 is the synoptic diagram of tap holes of electric furnace;

Fig. 2 is tap holes of electric furnace supporting plate synoptic diagram;

Fig. 3 is that synoptic diagram is changed in the location.

Embodiment

The correlation technique content of not addressing below all can adopt or use for reference prior art.

In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.

A kind of method of quick replacing tap holes of electric furnace, this method may further comprise the steps:

1) pneumatic supporting plate is held the tap hole pallet

Molten steel go out clean after, shake the open hearth body, wait to meet the replacing condition after, close pneumatic supporting plate, utilize pneumatic supporting plate 5 to hold the tap hole pallet.As shown in Figure 2.

2) pallet falls voluntarily

Extract three pallet tumbler pins out, after the personnel for the treatment of withdraw, open pneumatic supporting plate, the tap hole pallet will fall voluntarily.

3) bottom purge tube brick

After hose (diameter 16 ㎜) tied, from bottom square brick and pipe brick gap spray cooling, after joint filler washed down, the pipe brick will come off.After the pipe brick comes off, after foreign matter cleans out with top square brick with drill rod tap hole can be installed on every side.

4) three people's location and installation tap holes

Check whether the tap hole tumbler pin is intact.Suspender (snubber, chain sling 6) is hung up properly, hangs pipe brick support to be placed on the buggy ladle service platform.Overhead traveling crane falls chain with withholding in the tap hole square brick and hangs pipe brick support, and the lower end is hanging scaffold 7, extraordinary chamotte is put on the end brick forms the inclined-plane with high 50mm * 30mm around the pipe brick, prevents that joint filler from leaving out by mistake.

The special messenger commands overhead traveling crane, and 3 people adjust the position with pallet pilot hole and tumbler pin, and crawl lifting treats that the back that fits like a glove, pallet and body of heater tap hole bottom locks with pin, as shown in Figure 3, after the pin the other end insured the hole put on steel bar, prevent from giving up the throne.

Utilize electric arc furnace of the present invention to change the tap holes of electric furnace method fast, change tap hole and reduced to 60 minutes by 120 minutes mean time, process smoothness, safe and effective has reduced electric furnace heat and has stopped, and has improved production efficiency.

The above only is the application's preferred implementation, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be apparent to one skilled in the art, and defined General Principle can realize under the situation of the spirit or scope that do not break away from the application in other embodiments herein.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.

Claims

1. method of changing fast tap holes of electric furnace, this method may further comprise the steps:

A, supporting plate are held the tap hole pallet

Molten steel shakes the open hearth body after going out only, utilizes supporting plate to hold the tap hole pallet, i.e. tap hole holder brick;

B, pallet fall voluntarily

Open the pallet stationary installation, namely extract three pallet tumbler pins out, after the personnel for the treatment of withdraw, open supporting plate, the tap hole pallet falls voluntarily;

C, bottom purge tube brick

Cleaning, pipe brick come off, and with drill rod foreign matter around the top square brick are cleaned out then;

D, many people location and installation tap hole

Check whether the tap hole tumbler pin is intact, suspender is hung up properly, hanging pipe brick support is placed under the tap hole on the buggy ladle service platform, overhead traveling crane falls chain with withholding in the tap hole square brick and hangs pipe brick support, extraordinary chamotte is put on square brick or the end brick forms the inclined-plane with pipe around the brick, prevents that joint filler from leaving out by mistake;

The special messenger commands overhead traveling crane, and 3 people adjust the position with pallet pilot hole and tumbler pin, and crawl lifting treats that the back that fits like a glove, pallet and body of heater tap hole bottom locks with pin, after the pin the other end insured the hole put on steel bar, prevent from giving up the throne;

2. quick replacing tap hole method as claimed in claim 1, the residual brick of bottom-up cleaning from the bottom, among the step C, at first carry out spray cooling from bottom square brick and pipe brick gap, after joint filler washed down, the pipe brick comes off, and after with drill rod foreign matter around the top square brick being cleaned out then tap hole can be installed.