CN112266996A

CN112266996A - Tapping equipment and tapping method for old blast furnace reconstruction

Info

Publication number: CN112266996A
Application number: CN202011155243.4A
Authority: CN
Inventors: 苟志远; 杨飞; 王含; 蒋昭祎; 孙云鹏
Original assignee: Panzhihua Pangang Group Design & Research Institute Co ltd
Current assignee: Panzhihua Pangang Group Design & Research Institute Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-01-26

Abstract

The invention discloses a tapping device and a tapping method for old blast furnace transformation, belonging to the field of blast furnace iron-making equipment. Through setting up a transporting tank beside current iron wire, utilize the swing stem bar to change a jar clearance at the hot metal bottle and introduce the transporting tank with the molten iron, wait to change and switch back again and go normally to fill after the jar is accomplished, guaranteed the continuous operation of blast furnace tapping, improved the operating efficiency, whole improvement simultaneously occupies that the place space is little, and is with low costs, fine solution current old blast furnace can't arrange two iron wires and realize the problem of tapping site planarization.

Description

Tapping equipment and tapping method for old blast furnace reconstruction

Technical Field

The invention relates to the field of blast furnace ironmaking equipment, in particular to tapping equipment and a tapping method for old blast furnace transformation.

Background

At present, most of domestic large-scale blast furnaces are built in the last century. Blast furnace tapping generally adopts a mode of fixing a tank position or swinging a spout to tap iron. The fixed tank positions are linearly arranged according to the iron output and the volume of the iron tank, and the gradient of the iron runner is considered, so that the occupied area is large. The swing spout process adopts two iron wires to arrange the iron cans in parallel, and when one iron can is filled, the other iron can is configured to be empty, so that the length of the iron runner is greatly shortened, and the flattening is facilitated.

In addition, the method is limited by the limitation of times, and the old blast furnace casting house has small area and little expanded space. At present, along with the requirement of the country for environmental protection is higher and higher, simultaneously, for having good change blast furnace stokehold operation environment, guarantee production, the blast furnace casting house all adopts the planarization design, is convenient for arrange that dust collecting equipment and heavy equipment go up casting house and wind gap platform and replace work such as artifical casting clear ditches, maintenance air inlet unit. The combination of the upgrade of the modern blast furnace smelting equipment, in particular the use of an iron storage type main channel and a swing spout creates conditions for the planarization. However, the old blast furnace overhaul cannot increase the iron wire, and the cast house cannot be flattened.

Disclosure of Invention

In order to overcome the problems of the prior old blast furnace, the invention aims to solve the technical problems that: provides a simple and practical tapping device and a tapping method for old blast furnace reconstruction.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a casting iron is equipped for old blast furnace transformation, include the blast furnace and be located the iron wire on blast furnace next door, be equipped with the hot metal bottle that can transport in succession on the iron wire, the blast furnace links to each other with the hot metal bottle through main iron runner and branch iron runner the iron wire is other to be equipped with a transportation tank, the exit end of branch iron runner is equipped with the swing stem bar, the hot metal bottle on the iron wire is aimed at in an export of swing stem bar, and another export is aimed at transportation tank.

Furthermore, the transfer tank is controlled by a locomotive to be arranged on a dead end iron wire, one end of the dead end iron wire extends to the side of the swing spout, and the other end of the dead end iron wire extends to the position close to the factory building and open.

The automatic positioning device further comprises a control system, and the control system is electrically connected with the swing flow nozzle, the automatic positioning locomotive on the iron wire and the transfer locomotive on the end iron wire.

The tapping method adopting the tapping equipment for old blast furnace reconstruction comprises the following steps:

a. determining the arrangement positions of the transfer tanks and the corresponding end iron lines according to the actual conditions of the plant;

b. arranging a swing spout and an iron outlet tank position on an iron wire;

c. setting a control program, so that molten iron is poured into a first molten iron tank positioned on an iron outlet tank position through a swinging flow nozzle, immediately switching the swinging flow nozzle to introduce the molten iron into a transfer tank after the first molten iron tank is filled, operating an automatic positioning locomotive on a steel wire, transporting a second molten iron tank to the iron outlet tank position, then switching the swinging flow nozzle to pour the second molten iron tank, and repeating the steps;

d. after the molten iron in the transferring tank reaches a certain amount, in the normal pouring stage of the swinging spout, the transferring tank is transported out by using a transferring locomotive on the end iron wire, and then a new empty tank is replaced to transport back to the original position.

The invention has the beneficial effects that: through setting up a transporting tank beside current iron wire, utilize the swing stem bar to change a jar clearance at the hot metal bottle and introduce the transporting tank with the molten iron, wait to change and switch back again and go normally to fill after the jar is accomplished, guaranteed the continuous operation of blast furnace tapping, improved the operating efficiency, whole improvement simultaneously occupies that the place space is little, and is with low costs, fine solution current old blast furnace can't arrange two iron wires and realize the problem of tapping site planarization.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Marked in the figure as 1-blast furnace, 11-main iron runner, 12-branch iron runner, 2-iron wire, 3-hot metal ladle, 4-transfer ladle, 5-swing spout, 6-end iron wire, 7-automatic positioning locomotive, 8-transfer locomotive.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in figure 1, the tapping equipment for old blast furnace transformation comprises a blast furnace 1 and a hot metal line 2 located beside the blast furnace 1, wherein a hot metal ladle 3 capable of being continuously transported is arranged on the hot metal line 2, the blast furnace 1 is connected with the hot metal ladle 3 through a main iron runner 11 and a branch iron runner 12, a reverse conveying tank 4 is arranged beside the hot metal line 2, an outlet end of the branch iron runner 12 is provided with a swing nozzle 5, one outlet of the swing nozzle 5 is aligned with the hot metal ladle 3 on the hot metal line 2, and the other outlet is aligned with the reverse conveying tank 4. The function of arranging the transportation tank 4 is as follows: the molten iron can be introduced into the transfer tank 4 by utilizing the tank changing gap of the molten iron tank 3 on the iron wire 2 through the swing spout 5, and the molten iron tank is switched back to the iron wire 2 for normal filling after the tank changing is finished, so that the continuous operation of blast furnace tapping is ensured, and the flattening of a tapping field is realized.

Although the ladle transfer 4 only takes a little molten iron in the ladle transfer gap, the ladle transfer is still needed for a long time, so when the ladle transfer 4 is arranged, in order to conveniently change the ladle, the ladle transfer 4 is arranged on a dead end iron wire 6 and is controlled by a ladle transfer vehicle 8, one end of the dead end iron wire 6 extends to the side of the swing spout 5, and the other end of the dead end iron wire extends to the nearby open position of a factory building. Thus, when the ladle 4 is nearly full of molten iron, the ladle is transported out to an open position by the ladle truck 8, replaced by an empty ladle and transported back to the original position for continuous operation.

Further, in order to realize the automation of tapping, a control system is also included, and the control system is electrically connected with the swing nozzle 5, the automatic positioning locomotive 7 on the iron wire 2 and the transfer locomotive 8 on the end iron wire 6. The control system is used for realizing tapping switching of the swing spout 5 and the matched operation of the hot metal ladle 3 and the transfer ladle 4, so that the working efficiency and the safety are improved, and the labor intensity of workers is reduced.

a. determining the arrangement positions of the transfer tank 4 and the corresponding end iron wire 6 according to the actual condition of the factory building;

b. arranging a swing spout 5 and an iron outlet tank position on the iron wire 2;

c. setting a control program, so that molten iron is poured into a first molten iron tank positioned on an iron outlet tank position through a swinging flow nozzle 5, immediately switching the swinging flow nozzle 5 to introduce the molten iron into a transfer tank 4 after the first molten iron tank is filled, operating an automatic positioning locomotive 7 on an iron wire 2, transporting a second molten iron tank to the iron outlet tank position, then switching the swinging flow nozzle 5 to pour the second molten iron tank, and circulating the steps;

d. after the molten iron in the transfer tank 4 reaches a certain amount, in the normal pouring stage of the swing spout 5, the transfer tank 4 is transported out by using the transfer locomotive 8 on the end iron wire 6, and then a new empty tank is replaced to transport back to the original position for continuous work.

The continuous operation of blast furnace tapping has been guaranteed to whole tapping process, has improved the operating efficiency, and whole improvement occupation site space is little simultaneously, and is with low costs, fine solution current old blast furnace can't arrange two iron lines and realize the problem of tapping site planarization, have fine practicality and using value.

Claims

1. A tapping is equipped for old blast furnace transformation, include blast furnace (1) and be located iron wire (2) on blast furnace (1) next door, be equipped with hot metal bottle (3) that can transport in succession on iron wire (2), blast furnace (1) links to each other characterized by through main iron runner (11) and branch iron runner (12) with hot metal bottle (3): the iron wire (2) is provided with a transportation tank (4) beside, the outlet end of the iron runner (12) is provided with a swing spout (5), one outlet of the swing spout (5) is aligned with the molten iron tank (3) on the iron wire (2), and the other outlet is aligned with the transportation tank (4).

2. The tapping rig for retrofitting an old blast furnace as claimed in claim 1, characterized in that: the transfer tank (4) is controlled by a locomotive to be arranged on a dead end iron wire (6), one end of the dead end iron wire (6) extends to the side of the swing spout (5), and the other end of the dead end iron wire extends to the position close to the factory building.

3. The tapping rig for retrofitting an old blast furnace as claimed in claim 2, characterized in that: the automatic positioning device further comprises a control system, and the control system is electrically connected with the swing spout (5), the automatic positioning locomotive (7) on the iron wire (2) and the transfer locomotive (8) on the end iron wire (6).

4. A tapping method using the tapping fitting for old blast furnace modification according to claim 3, comprising the steps of:

a. determining the arrangement positions of the transfer tank (4) and the corresponding end iron wire (6) according to the actual condition of the factory building;

b. arranging a swing spout (5) and an iron outlet tank position on the iron wire (2);

c. setting a control program, so that molten iron is poured into a first molten iron tank positioned on an iron outlet tank position through a swinging flow nozzle (5), switching the swinging flow nozzle (5) immediately after the first molten iron tank is filled, introducing the molten iron into a transfer tank (4), operating an automatic positioning locomotive (7) on an iron wire (2), transporting a second molten iron tank to the iron outlet tank position, switching the swinging flow nozzle (5) to pour the second molten iron tank, and circulating the steps;

d. after the molten iron in the transferring tank (4) reaches a certain amount, the transferring tank (4) is transported out by using a transferring locomotive (8) on a tail end iron wire (6) in the normal pouring stage of the swinging spout (5), and then a new empty tank is replaced to transport back to the original position.