Iron bath molten pool smelting furnace tapping house

Abstract

The utility model belongs to the technical field of direct smelting equipment, and particularly relates to an iron bath molten pool smelting furnace tapping house, which is characterized in that a first-layer tapping house, a second-layer tapping house and a platform above a slag hole are sequentially arranged at intervals from bottom to top along the height direction of a furnace body; a residual iron residue operation area is arranged in a first-layer tapping house, a front-arranged furnace tapping operation area and a slag tapping operation area are arranged in a second-layer tapping house, the front-arranged furnace tapping operation area is located on the right side of a front-arranged furnace, and the residual iron residue operation area and the slag tapping operation area are both located on the front side of a furnace body, so that the space around an iron bath molten pool smelting furnace is effectively utilized; iron tapping and slag tapping are separately arranged, so that all operation areas are tightly connected and are mutually independent, and the occupied area of the overall arrangement is small. The first overhaul hoisting equipment is arranged above the iron bath molten pool smelting furnace, and the hot air spray gun hoisting overhaul area is arranged on the left side of the iron bath molten pool smelting furnace in a matched mode, so that the iron bath molten pool smelting furnace is convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of direct smelting equipment, and specifically relates to an iron-making site of an iron bath molten pool smelting furnace. Background Art

[0002] The casthouse is an important place for the production and equipment maintenance of the iron bath smelting furnace. The layout of the casthouse is usually closely related to the plant topography, general layout, and molten iron transportation methods.

[0003] Patent document CN1771339A (CN200480009578.8) discloses a direct smelting device for producing molten metal from metal supply raw materials. In this patent, only the arrangement of the metal discharge device, the final metal discharge device, the slag discharge device and the final slag discharge device is considered, and no corresponding maintenance device is provided for the smelting equipment, which is not convenient for subsequent maintenance.

[0004] In addition, the above patent only sets up a slag collection pit and a metal collection pit for recycling the final slag and the final metal, which cannot be effectively utilized, increasing the subsequent treatment costs of the slag in the slag collection pit and the metal in the metal collection pit. In addition, the above patent does not set up relevant dust removal equipment, which is not conducive to environmental protection control. Utility Model Content

[0005] The utility model aims to solve the above-mentioned problems and provides an iron-bath molten pool smelting furnace tapping yard, in which the front furnace tapping operation area and the slag tapping operation area are separately arranged, so as to facilitate the installation of dust removal and maintenance devices respectively, and is equipped with a first maintenance lifting equipment and a hot air spray gun lifting and maintenance area, so as to achieve the purpose of convenient equipment maintenance and low production cost.

[0006] The technical problem to be solved by the utility model is achieved by adopting the following technical scheme: an iron bath molten pool smelting furnace tapping house, comprising an iron bath molten pool smelting furnace, a first-layer tapping house, a second-layer tapping house and a platform above the slag outlet;

[0007] The iron bath molten pool smelting furnace comprises a furnace body and a front furnace which are interconnected, and the front furnace is located on the right side of the furnace body;

[0008] The first-layer iron-casting yard, the second-layer iron-casting yard and the platform above the slag hole are arranged in sequence from bottom to top along the height direction of the furnace body;

[0009] The first-floor iron-casting yard is provided with a residual iron and residual slag operation area, the second-floor iron-casting yard is provided with a pre-furnace iron-casting operation area and a slag-casting operation area, and the platform above the slag opening is used for spot inspection of the material spray gun;

[0010] The pre-furnace iron-out operation area is located on the right side of the pre-furnace;

[0011] The residual iron and slag operation area and the slag discharge operation area are both located at the front side of the furnace body;

[0012] A first maintenance hoisting device is arranged above the iron bath molten pool smelting furnace, and a hot air spray gun lifting and maintenance area is arranged on the left side of the iron bath molten pool smelting furnace.

[0013] Preferably, the pre-furnace iron-out operation area is provided with an iron-out ditch and a swing chute which are sequentially connected to the pre-furnace;

[0014] A molten iron tank is arranged below the swing chute. The tapping chute and the swing chute are arranged on the right side of the pre-furnace in sequence, and the tapping operation is performed by cooperating with the tapping chute and the molten iron tank, which can effectively shorten the tapping chute length and reduce the temperature drop of the molten iron during the tapping process.

[0015] Preferably, the slag discharge operation area is provided with a slag treatment device and a dry slag pit respectively connected to the furnace body. When slag is discharged, the molten slag flows out from the slag outlet and is directed to the slag treatment device through the slag groove for direct treatment and utilization. When the slag treatment device is under maintenance, it can be diverted to the dry slag pit to avoid affecting normal operation.

[0016] Preferably, the residual iron and slag operation area is provided with a residual iron pit connected to the furnace body and the front furnace as a residual iron backup facility. When operating under special working conditions, the residual iron can flow into the residual iron pit through the residual iron ditch;

[0017] The residual iron and residual slag operation area is provided with a residual ditch connected to the dry slag pit, and the residual ditch is connected to the furnace body. The final slag at the bottom of the furnace body can flow into the dry slag pit through the residual ditch.

[0018] Preferably, the residual iron and slag operation area is further provided with a residual iron recovery tank connected to the furnace body and the front furnace respectively. During normal operation, the residual iron in the furnace body and the front furnace can be diverted to the residual iron recovery tank through the residual iron groove, thereby improving the residual iron recovery efficiency in the furnace.

[0019] Preferably, the pre-furnace iron-out operation area is connected to the desulfurization station and the steel-making workshop respectively through rails. The pre-furnace iron-out operation area is connected to the desulfurization station and the steel-making workshop respectively through rails, which facilitates the desulfurization and steel-making operations of the molten iron in the molten iron tank in sequence, avoids the secondary transportation of the molten iron, and reduces the transportation cost of the molten iron.

[0020] Preferably, the pre-furnace iron-tapping operation area and the desulfurization station are respectively provided with a dust removal device for the iron-tapping tank and a dust removal device for molten iron desulfurization. The molten iron desulfurization is arranged separately from the iron-tapping tank and arranged on the right side of the swing chute. The dust removal of the iron-tapping tank is arranged separately from the dust removal of the molten iron desulfurization, which can improve the dust removal effect.

[0021] Preferably, the furnace body is provided with a slag outlet, the slag outlet is located above the second-layer iron-casting yard, a dust suction chamber connected to a dust removal device is provided in front of the slag outlet, and the dust suction chamber is located between the second-layer iron-casting yard and the platform above the slag outlet;

[0022] A dust hood connected to a dust chamber is arranged above the slag outlet, and the dust hood is located on the platform above the slag outlet. A dust chamber connected to a dust removal device is arranged above the slag outlet, so that the area above the slag outlet forms a closed area, which can effectively avoid unorganized emission of smoke during slag discharge and opening of the plugging port, and achieve the effect of clean production. At the same time, the upper platform of the slag outlet can be used for the operation space of the material spray gun for spot inspection, which is convenient for equipment inspection and maintenance.

[0023] Preferably, a second maintenance hoisting device is provided above the iron outlet groove and the swing chute. By providing the second maintenance hoisting device above the iron outlet groove and the swing chute, maintenance work on the iron outlet groove and the swing chute is facilitated.

[0024] The utility model preferably further comprises an iron casting machine operation area, wherein the iron casting machine operation area and the residual iron recovery tank are both arranged below the molten iron tank hoisting;

[0025] The scrap iron recovery tank is transported to the iron casting machine operation area through the iron molten tank hoisting span for recycling. The iron casting machine operation area and the scrap iron recovery tank are arranged in the transport span. When the furnace is stopped, the molten iron in the furnace can be diverted to the scrap iron recovery tank through the scrap iron ditch, and then the molten iron is transported to the iron casting machine to be cast into iron blocks for recycling.

[0026] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model arranges the first-floor iron-casting yard, the second-floor iron-casting yard and the platform above the slag mouth in order from bottom to top along the height direction of the furnace body; arranges the residual iron and slag operation area in the first-floor iron-casting yard, and arranges the pre-furnace iron-casting operation area and the slag-discharging operation area in the second-floor iron-casting yard. Since the pre-furnace iron-casting operation area is located on the right side of the pre-furnace and the residual iron and slag operation area and the slag-discharging operation area are both located on the front side of the furnace body, the space around the iron bath molten pool smelting furnace is effectively utilized, and the iron-casting and slag-discharging are arranged separately, so that each operation area is closely connected and independent of each other, and the overall layout occupies a small area. The present application facilitates the maintenance of the iron bath molten pool smelting furnace by arranging the first maintenance hoisting equipment above the iron bath molten pool smelting furnace and arranging a hot air spray gun hoisting maintenance area on the left side of the iron bath molten pool smelting furnace.

[0027] In addition, the utility model uses the platform above the slag opening for the operation of the material spray gun, thereby improving the utilization rate of the vertical space. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a plan view of the iron-making field of the iron bath molten pool smelting furnace in the embodiment of the utility model;

[0029] Figure 2 It is a vertical layout diagram of the iron-making field of the iron bath molten pool smelting furnace in the embodiment of the utility model;

[0030] In the figure, 1 is the iron bath smelting furnace, 2 is the first-floor iron-casting yard, 3 is the second-floor iron-casting yard, 4 is the platform above the slag hole, and 5 is the first maintenance hoisting equipment;

[0031] 101 furnace body, 102 pre-furnace;

[0032] 100 residual iron and slag operation area, 200 pre-furnace iron-making operation area, 300 slag-making operation area, 400 hot air spray gun hoisting and maintenance area, 500 desulfurization station;

[0033] 6 iron tapping ditch, 7 swing chute, 8 molten iron tank, 9 dry slag pit, 10 residual iron pit, 11 residual ditch, 12 residual iron recovery tank;

[0034] 13 dust collection room, 14 dust collection hood, 15 second maintenance lifting equipment, 16 molten iron ladle lifting. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] like Figure 1 and Figure 2 As shown, an iron-bath molten pool smelting furnace tapping house comprises an iron-bath molten pool smelting furnace 1, a first-layer tapping house 2, a second-layer tapping house 3 and a platform 4 above the slag outlet.

[0037] The iron bath molten pool smelting furnace 1 includes a furnace body 101 and a front furnace 102 which are connected to each other, and the front furnace 102 is located on the right side of the furnace body 101 .

[0038] The first-layer iron casting floor 2, the second-layer iron casting floor 3 and the platform above the slag hole 4 are sequentially arranged from bottom to top along the height direction of the furnace body 101. The first-layer iron casting floor 2, the second-layer iron casting floor 3 and the platform above the slag hole 4 are arranged circumferentially around the furnace body 101.

[0039] The first-floor casting yard 2 is provided with a residual iron and slag operation area 100, the second-floor casting yard 3 is provided with a pre-furnace casting operation area 200 and a slag casting operation area 300, and the platform 4 above the slag opening is used for spot inspection of the material spray gun.

[0040] The pre-furnace iron-out operation area 200 is located on the right side of the pre-furnace 102 .

[0041] The residual iron and slag operation area 100 and the slag discharge operation area 300 are both located at the front side of the furnace body 101. The residual iron and slag operation area 100 is located at the right side of the slag discharge operation area 300 and is arranged side by side.

[0042] A first maintenance hoisting device 5 is arranged above the iron bath molten pool smelting furnace 1, and a hot air spray gun hoisting maintenance area 400 is arranged on the left side of the iron bath molten pool smelting furnace 1. The hot air spray gun hoisting maintenance area 400 is provided with various processing machine tools and equipment for maintenance.

[0043] The pre-furnace iron-out operation area 200 is provided with an iron-out channel 6 and a swing chute 7 which are sequentially connected to the iron-outlet of the pre-furnace 102 .

[0044] A molten iron tank 8 is arranged below the swing chute 7 .

[0045] The slag discharge operation area 300 is provided with a slag treatment device and a dry slag pit 9 respectively connected to the furnace body 101. The slag treatment device and the dry slag pit 9 are both connected to the slag outlet on the furnace body 101. Specifically, the slag treatment device is a device for water quenching the slag.

[0046] The scrap iron and slag operation area 100 is provided with a scrap iron pit 10 connected to the furnace body 101 and the pre-furnace 102. The scrap iron pit 10 is used as a backup facility for placing scrap iron during special working conditions.

[0047] The residual iron and slag operation area 100 is provided with a slag ditch 11 connected to the dry slag pit 9 , and the slag ditch 11 is connected to the slag opening of the furnace body 101 .

[0048] The scrap iron and slag operation area 100 is also provided with a scrap iron recovery tank 12 connected to the scrap iron outlets of the furnace body 101 and the pre-furnace 102. The scrap iron recovery tank 12 is located on the right side of the scrap iron pit 10 and in front of the molten iron tank 8.

[0049] The pre-furnace iron-out operation area 200 is connected to the desulfurization station 500 and the steelmaking workshop through rails. The desulfurization station 500 is located on the right side of the pre-furnace iron-out operation area 200, and the molten iron tank 8 is set on the track by an electric flatbed car. The molten iron tank 8 is transported to the desulfurization station 500 through the track for desulfurization operation.

[0050] A dust removal device for the iron-tapping tank position and a dust removal device for molten iron desulfurization (not shown in the figure) are respectively arranged above the pre-furnace iron-tapping operation area 200 and the desulfurization station 500.

[0051] The furnace body 101 is provided with a slag outlet, which is located above the second-layer iron-making yard 3. A dust suction chamber 13 connected to a dust removal device is provided in front of the slag outlet. The dust suction chamber 13 is located between the second-layer iron-making yard 3 and the platform 4 above the slag outlet. The dust suction chamber 13 is sealed to avoid dust pollution during the slag discharge process.

[0052] A dust hood 14 communicating with the dust chamber 13 is arranged above the slag outlet, and the dust hood 14 is located on the platform 4 above the slag outlet.

[0053] A second maintenance hoisting device 15 is provided above the iron outlet groove 6 and the swing chute 7 .

[0054] The iron bath molten pool smelting furnace tapping site also includes an iron casting machine operating area (not shown in the figure), and the iron casting machine operating area and the residual iron recovery tank 12 are both arranged below the molten iron tank hoisting 16.

[0055] The residual iron recovery tank 12 is transported to the iron casting machine operation area through the molten iron tank hoisting 16 for recycling.

[0056] Working principle: When the iron bath molten pool smelting furnace 1 is tapping iron, the molten iron flows out from the tapping port of the pre-furnace 102, and is guided to the molten iron tank 8 through the tapping groove 6 and the swing chute 7. The molten iron tank 8 is transported to the desulfurization station 500 by an electric flatbed truck. After the desulfurization and slagging process is completed, it is transported to the steelmaking workshop by an electric flatbed truck.

[0057] When slag is discharged, the molten slag flows out from the slag outlet of the furnace body and is guided to the slag treatment device through the slag ditch. The slag treatment device can be diverted to the dry slag pit 9 when the slag treatment device is overhauled.

[0058] When the furnace is under maintenance, the scrap iron in the furnace can be discharged through the scrap iron outlet, and then discharged through the scrap iron ditch to the scrap iron recovery tank 12 in the scrap iron recovery area, and then hoisted to the cast iron machine for casting by a hoisting crane.

Claims

1. An iron-bath molten pool smelting furnace tapping site, characterized in that: It comprises an iron bath molten pool smelting furnace (1), a first-layer iron casting floor (2), a second-layer iron casting floor (3) and a platform above a slag outlet (4); The iron bath molten pool smelting furnace (1) comprises a furnace body (101) and a front furnace (102) which are connected to each other, and the front furnace (102) is located on the right side of the furnace body (101); The first-layer iron-casting floor (2), the second-layer iron-casting floor (3) and the platform above the slag hole (4) are arranged in sequence from bottom to top along the height direction of the furnace body (101); The first-floor iron-casting yard (2) is provided with a residual iron and residual slag operation area (100), the second-floor iron-casting yard (3) is provided with a pre-furnace iron-casting operation area (200) and a slag-casting operation area (300), and the platform (4) above the slag opening is used for spot inspection of the material spray gun; The pre-furnace iron-out operation area (200) is located on the right side of the pre-furnace (102); The residual iron and slag operation area (100) and the slag discharge operation area (300) are both located at the front side of the furnace body (101); A first maintenance hoisting device (5) is arranged above the iron bath molten pool smelting furnace (1), and a hot air spray gun hoisting maintenance area (400) is arranged on the left side of the iron bath molten pool smelting furnace (1).

2. The iron bath molten pool smelting furnace tapping house according to claim 1, characterized in that: The pre-furnace iron-out operation area (200) is provided with an iron-out channel (6) and a swing chute (7) which are sequentially connected to the pre-furnace (102); A molten iron tank (8) is arranged below the swing chute (7).

3. The iron-bath molten pool smelting furnace tapping site according to claim 1, characterized in that: The slag discharge operation area (300) is provided with a slag processing device and a dry slag pit (9) respectively connected to the furnace body (101).

4. The iron-bath molten pool smelting furnace tapping house according to claim 3, characterized in that: The residual iron and slag operation area (100) is provided with a residual iron pit (10) connected to the furnace body (101) and the front furnace (102); The residual iron and slag operation area (100) is provided with a slag ditch (11) connected to the dry slag pit (9), and the slag ditch (11) is connected to the furnace body (101).

5. The iron-bath molten pool smelting furnace tapping house according to claim 4, characterized in that: The residual iron and slag operation area (100) is also provided with a residual iron recovery tank (12) respectively connected to the furnace body (101) and the front furnace (102).

6. The iron-bath molten pool smelting furnace tapping site according to claim 1 or 2, characterized in that: The pre-furnace iron-out operation area (200) is connected to the desulfurization station (500) and the steelmaking workshop respectively through rails.

7. The iron-bath molten pool smelting furnace tapping house according to claim 6, characterized in that: A dust removal device for the iron-tapping tank position and a dust removal device for molten iron desulfurization are respectively arranged above the pre-furnace iron-tapping operation area (200) and the desulfurization station (500).

8. The iron-bath molten pool smelting furnace tapping house according to claim 1, characterized in that: The furnace body (101) is provided with a slag outlet, the slag outlet is located above the second-layer iron-casting yard (3), a dust collection chamber (13) connected to a dust removal device is provided in front of the slag outlet, and the dust collection chamber (13) is located between the second-layer iron-casting yard (3) and the platform (4) above the slag outlet; A dust hood (14) communicating with the dust chamber (13) is arranged above the slag outlet, and the dust hood (14) is located on the platform (4) above the slag outlet.

9. The iron-bath molten pool smelting furnace tapping house according to claim 2, characterized in that: A second maintenance hoisting device (15) is arranged above the iron outlet groove (6) and the swing chute (7).

10. The iron-bath molten pool smelting furnace tapping house according to claim 5, characterized in that: It also includes an iron casting machine operation area, wherein the iron casting machine operation area and the residual iron recovery tank (12) are arranged below the molten iron tank hoisting (16); The residual iron recovery tank (12) is transported to the iron casting machine operation area via the molten iron tank hoist (16) for recovery and treatment.

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