CN201924026U

CN201924026U - Heat baking furnace for converter steel slag

Info

Publication number: CN201924026U
Application number: CN2010206903220U
Authority: CN
Inventors: 廖卫军; 胡金海; 谢东和; 许红军
Original assignee: HUNAN LIANGANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Current assignee: HUNAN LIANGANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2011-08-10
Anticipated expiration: 2020-12-28

Abstract

The utility model discloses a heat baking furnace for converter steel slag. A furnace cover is arranged on the top of a furnace body, a plurality of water spray pipes are mounted on the inner side of the top of the furnace cover, a plurality of water spray holes are arranged on each water spray pipe, heat-resistant protecting layers are manufactured on the inner peripheral wall and the bottom wall of the furnace body, a first lateral wall lining, a second lateral wall lining and a bottom lining are mounted on the heat-resistant protecting layers in a closely attached manner, an inclination alpha is formed between the first lateral wall lining and the inner wall of the furnace body, an inclination alpha' is formed between the second lateral wall lining and the inner wall of the furnace body, an inclination beta is formed between the bottom lining and the inner wall of the furnace body, a steam exhaust pipe penetrates through the heat-resistant protecting layer and the first lateral wall lining prior to being mounted at the upper end of the furnace body, and a water draining pipe penetrates through the second lateral wall lining and the heat-resistant protecting layer prior to being mounted on the lower side of an inclination line of the bottom lining. The heat baking furnace for converter steel slag is convenient in manufacture and maintenance, saves production cost, can be used for treating the converter steel slag and has great popularization valve, and the service life of the heat baking furnace can be prolonged by twice to three times.

Description

The stewing stove of bessemer furnace slag heat

Technical field

The utility model relates to a kind of stewing stove of bessemer furnace slag heat that is applied in the bessemer furnace slag Water Quenching technology, belongs to the recrement treatment facility.

Background technology

In the steelmaking process of smelter, there is big steel slag to transport,, also makes a big impact to environment if untimely processing is consequently piled up with face greatly.The treatment facility of steel-making residue (as pre-slag or the later stage slag and the electric furnace slag of converter) is all adopted basically the water quenching oven (also claiming heat stewing stove) of different structure type, one deck flame retardant coating is constructed in inboard at body of heater (or furnace shell), settle the stewing hot inner lining of furnace of one deck steel material near flame retardant coating, this liner comprises sidewall liner and bottom liner, and be with the pattern of sidewall liner perpendicular to the bottom liner for the mounting structure of sidewall liner, if it is the general steel plate of 20-30mm that these liners adopt thickness, very easily distortion at high temperature; For adopt thickness be the continuously cast bloom of 160mm as liner material and vertical the installation, the disadvantage of this phase with vertical installation is when laying-in life-time service this type of in after because high temperature deformation meeting thermotropism is boiled in a covered pot over a slow fire the stove centre collapses, and causes whole heat to boil in a covered pot over a slow fire stove and scraps.Work-ing life is short, and more changeable liner (cycle) number of times is frequent, and maintenance load is big, has increased the production cost of enterprise.

Summary of the invention

Task to be solved in the utility model provides a kind of long service life, reduces the stewing stove of bessemer furnace slag heat of maintenance load.

For finishing above-mentioned task; the technical solution adopted in the utility model is: the stewing stove of described bessemer furnace slag heat comprises bell, water jet standpipe, steam discharge pipe, body of heater, the first side wall liner and the second sidewall liner, bottom liner and water shoot; on the inboard wall of body of heater and diapire, be manufactured with refractory protection; top in body of heater is provided with bell; the installed inside of bell has quantity more than or equal to 1 water jet standpipe, offers quantity more than or equal to 1 spout hole towards the inner chamber of body of heater on every water jet standpipe.The installed inside of being close to refractory protection has the first side wall liner, the second sidewall liner and bottom liner, and the first side wall liner is α to the pitch angle of inboard wall of furnace body, and the second sidewall liner is α ' to the pitch angle of inboard wall of furnace body, and the pitch angle of bottom liner is β.Quantity is passed the upper end that is installed in body of heater behind the refractory protection of inboard wall of furnace body and the first side wall liner more than or equal to 1 steam discharge pipe, and quantity is passed the parallax below that is installed in the bottom liner behind the second sidewall liner and the refractory protection more than or equal to 1 water shoot.

Adopt the stewing stove of a kind of bessemer furnace slag heat that as above technical scheme provides compared with prior art, technique effect is:

1. improve the bulk life time of the stewing stove of heat: use 20-30mm thickness common iron as liner, life-span has only 2-3 month, and present work-ing life is minimum to reach 3 years, compares with using 160mm thickness continuously cast bloom, its life-span can be improved 1-3 doubly, greatly reduces maintenance load;

2. used liner material has been saved cost for can not enter the continuously cast bloom of stocking program, also can be used as steel scrap and send experienced steel operation behind life-time service.

Description of drawings

Fig. 1 is the forward cross-sectional schematic of the stewing stove of a kind of bessemer furnace slag heat described in the utility model, also is Figure of abstract of the present utility model.

Fig. 2 is the A-A line cross-sectional schematic along Fig. 1.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

The stewing stove of a kind of bessemer furnace slag heat described in the utility model comprises bell 2, water jet standpipe 3, steam discharge pipe 4, body of heater 5, refractory protection 6, the first side wall liner 7 and the second sidewall liner 8, bottom liner 11 and water shoot 9; the barrel-shaped body of heater in side that described body of heater 5 is (5 * 5 * 7) m can certainly be made into drum shape body of heater.Be manufactured with refractory protection 6 on the inboard wall of body of heater 5 and diapire, it is the asbestine refractory matter that its material can be selected refractory mortar for use.The installed inside of being close to refractory protection 6 has the first side wall liner 7; the second sidewall liner 8 and diapire liner 11; described the first side wall liner 7; the material that the second sidewall liner 8 and bottom liner 11 are selected for use is the continuous casting steel billet of thickness 230mm; the first side wall liner 7 and the second sidewall liner 8 all are paved with the refractory protection 6 of body of heater 5 inwalls; accomplish tight as far as possible; and to make the first side wall liner 7 be α to the pitch angle of body of heater 5 inwalls; the second sidewall liner 8 is α ' to the pitch angle of body of heater 5 inwalls; optional α=α '; α＞α ' or α＜α ' get α=5～10 degree angles usually.Quantity is passed the upper end that is installed in body of heater 5 behind the refractory protection 6 of body of heater 5 inwalls and the first side wall liner 7 (or second sidewall liner 8) more than or equal to 1 steam discharge pipe 4; bottom liner 11 is assemblied on the stewing furnace bottom refractory protection 6 of heat near the first side wall liner 7 and the second sidewall liner 8; and the diapire liner 11 β angle that is tilted to the left; promptly bottom liner 11 becomes the β angle with sea line; get β=3～8 degree angles; below the parallax of bottom liner 11, pass second sidewall liner 8 (or the first side wall liner 7) and refractory protection 6 and dispose quantity more than or equal to 1 water shoot 9, water shoot 9 communicated drainage ditches 10.

Be provided with bell 2 at the top of body of heater 5, the shape of described bell 2 identical (or similar) is in the top shape of body of heater 5.Quantity is installed more than or equal to 1 water jet standpipe 3 bell 2 inboard parallel or non-parallel, water jet standpipe 3 shared water inlet pipes have quantity more than or equal to 1 spout hole 1 towards body of heater (5) inner chamber on every water jet standpipe 3.

During enforcement, with the slag of steel melting furnace (as oxygen coverter) (is red slag, temperature is about 900 ℃) transport to slag processing scene by special-purpose vehicle, open bell 2, the high temperature slag is poured in the stewing stove of heat, when high temperature slag quantity arrives to a certain degree, cover bell 2, in water jet standpipe 3, supply water, water directly is sprayed onto on the hot high temperature slag of boiling in a covered pot over a slow fire in the stove from each spout hole 1 the high temperature slag is carried out shrend, a large amount of steam that slag is produced in the Water Quenching process are discharged by steam discharge pipe 4 and are sent into other place (as dining room steamed rice or public place heating etc.) as thermal source, the hot water that is produced enters waterways 10 by water shoot 9 and uses it for anything else, slag after Water Quenching is as building materials usefulness, and the metal charge of selecting the slag after handling reclaims and send other operation of smelter (as ironmaking or steel-making etc.).Because the first side wall liner 7 becomes α and α ' pitch angle with the second sidewall liner 8 with vertical line, in the stewing process (being the shrend process) of slag heat though in be heated and a small amount of deformation takes place the phenomenon that the stewing stove of thermotropism central authorities tilt also can not occur, prolong the work-ing life of hot stewing stove, reached purpose described in the utility model.

Claims

1. a bessemer furnace slag heat is boiled in a covered pot over a slow fire stove, comprise bell (2), water jet standpipe (3), steam discharge pipe (4), body of heater (5), the first side wall liner (7) and the second sidewall liner (8), bottom liner (11) and water shoot (9), the inboard wall of body of heater (5) and diapire are manufactured with refractory protection (6), the top of body of heater (5) is provided with bell (2), the installed inside of bell (2) has quantity more than or equal to 1 water jet standpipe (3), go up towards body of heater (5) inner chamber at every water jet standpipe (3) and to offer quantity more than or equal to 1 spout hole (1), it is characterized in that: be close to refractory protection (6) the first side wall liner (7) is installed, the second sidewall liner (8) and bottom liner (11), the first side wall liner (7) is to body of heater (5) inwall tilt alpha angle, the second sidewall liner (8) is to body of heater (5) inwall tilt alpha ' angle, and the pitch angle of bottom liner (11) is β;

Quantity is passed the upper end that is installed in body of heater (5) behind the refractory protection (6) of body of heater (5) inwall and the first side wall liner (7) more than or equal to 1 steam discharge pipe (4), and quantity is passed the parallax below that is installed in bottom liner (11) behind the second sidewall liner (8) and the refractory protection (6) more than or equal to 1 water shoot (9).

2. the stewing stove of a kind of bessemer furnace slag heat according to claim 1 is characterized in that: the same inclined angle alpha of inclined angle alpha ' the desirable α=α ' of relation, α＞α ' or α＜α '.

3. the stewing stove of a kind of bessemer furnace slag heat according to claim 1 is characterized in that: quantity can be arranged in parallel more than or equal to 1 water jet standpipe (3) and install or non-parallel arrangement is installed.