CN2811306Y

CN2811306Y - Dedicated expanded steel fiber device for smelting blast furnace

Info

Publication number: CN2811306Y
Application number: CNU2005200792539U
Authority: CN
Inventors: 王彬海
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-16
Filing date: 2005-08-16
Publication date: 2006-08-30
Anticipated expiration: 2015-08-16

Abstract

The utility model provides a dedicated puffing steel fiber device for a smelting blast furnace, which is mainly used for solving the problem of clearing the furnace clinkers in the smelting blast furnace. The device is made into the puffing steel fiber device by utilizing the puffing principle to be driven into the furnace clinker to generate the puffing reaction at high temperature to burst and clear the surface of the furnace clinker. The whole device comprises a blasting pipe 2 of which the middle part is a hollow cavity in which puffing agents 4 are arranged. The front end of the blasting pipe is a tip-shaped fiber head 1, and the tail end of the blasting pipe is connected with a sealing cover 6. While in use, the sealing cover 6 of the device is connected with a dedicated hexagonal steel fiber, and after the sealing cover 6 is driven into the furnace clinker by a beetle, the puffing steel fiber device is caused to generate the puffing reaction at high temperature to generate the explosive force to crack the furnace clinker to enter a furnace chamber to reach the goal of driving the furnace clinker out. The utility model has the advantages of high safety and reliability, and high furnace clinker cleaning speed and the furnace needs not to be stopped. The utility model can be used for clearing the furnace clinkers of different kinds of smelting blast furnaces, and particularly can be served as the dedicated furnace clinker driving tool of a colored smelting blast furnace or a blast furnace and a cupola furnace.

Description

The fine device of steelmaking furnace special swelling steel

Technical field

The utility model belongs to field of mechanical technique, relates to special tool, and the fine device of specifically a kind of steelmaking furnace special swelling steel is mainly used in the furnace accretion of removing nonferrous smelting blast furnace or blast furnace, cupola furnace inside.

Background technology

Known in the industry, nonferrous smelting blast furnace or blast furnace machine, cupola furnace are in smelting the process of producing, because furnace charge incendiary non-uniform temperature forms partial gasification, produce caking, i.e. furnace accretion in cooling back, the top of furnace chamber inwall.After this furnace accretion is formed,, cause non-ferrous metal seriously to evaporate because its temperature height generally greater than 300 ℃, makes that the charge level temperature in the stove raises, particularly bigger for lead smelting harm, make plumbous output capacity obviously reduce, the smelting cost straight line increases.

Daily, along with the steelmaking furnace work continuity of runtime, the furnace accretion of stove internal upper part can increase gradually, when furnace accretion reaches certain thickness, will cause furnace roof scaffold and furnace roof to hold one's breath, and forces blowing out to remove furnace accretion.At present, the method for removing furnace accretion is manually to use steel fibre, sledgehammer perforating on furnace accretion earlier, puts into detonator then, explosive carries out explosion.There is following shortcoming in this method:

1. furnace outage time is long, and financial loss is big

For small-sized steelmaking furnace or gas blower, cupola furnace, generally need 2～3 days with artificial cupola drop knot after the blowing out, cause direct economic loss more than 10,000 yuan, and for large-scale steelmaking furnace or gas blower, cupola furnace, then longer after the blowing out with the time of artificial cupola drop knot, generally need 4～5 days, cause direct economic loss up to more than 20,000 yuan.

2. labour intensity is big, and accidents happened easily

Because furnace accretion is that a kind of toughness is bigger, and hard by part non-ferrous metal and the nonmetal blended solid that merges of part, be bonded to be difficult on the furnace wall break into pieces, so labor strength is very big.And because non-ferrous metal steam at high temperature is poisonous, particularly lead steam causes metal poisoning easily; Because of explosive blasting, tend to blow up body of heater simultaneously, cause the person, device security accident.

In sum, furnace accretion is the fatal place that influences the working of a furnace production cycle, is to cause can not the quantity-produced maximum bottleneck of smelter, for this reason, changes the means of handling furnace accretion and be the problem that will solve be badly in need of.

The content of utility model

The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, provides the expanded steel of a kind of steelmaking furnace fine device, as the special tool of handling furnace accretion, under the working order that is implemented in not blowing out, can remove the effect of furnace accretion safely, reliably, fast.

The technical scheme that realizes the object of the invention is: adopt expanded principle to make the fine device of expanded steel and squeeze in the furnace accretion, make it at high temperature produce expanded reversed stress the explosion of furnace accretion face is removed.The fine device of this expanded steel comprises a blasting cartridge, and the middle part of this blasting cartridge is hollow cavity, and swelling agent is housed in the cavity, and the front end of blasting cartridge is pointed fine head, and the tail end of blasting cartridge is connected with sealing cover.

Hollow chamber outer wall one side in the fine device of above-mentioned expanded steel is offered and is flute profile explosion face, to reduce thickness of pipe, is convenient to expanded explosion.

Sealing cover in the fine device of above-mentioned expanded steel is the double end plug wire, with sealing that realizes blasting cartridge and the double-deck function that is connected the fine instrument of six square steel.

Swelling agent in the fine device of above-mentioned expanded steel is mainly formed by the configuration of raw materials such as tritonal, powdered carbon, yellow mud.

Be filled with yellow mud in the afterbody cavity of the fine device borehole blasting of above-mentioned expanded steel pipe, to guarantee the peacefulness of swelling agent.

During use,, described device is connected on the six special-purpose square steel prickers steelmaking furnace blowing-out in short-term, after squeezing into furnace accretion with sledgehammer, make the fine device of expanded steel that expanded reaction at high temperature take place, produce bursting force, furnace accretion Cui split enter burner hearth, reach the purpose of destroying furnace accretion.

The utility model is owing to adopt the structure of the swelling agent of packing in blasting cartridge, and make bore bit enter behind the furnace accretion swelling agent and in blasting cartridge, be heated and expanded explosion takes place, thus can safe and reliable removing furnace accretion, reduced labour intensity greatly; Because head of the present utility model is pointed, realize quick explosion in the furnace accretion simultaneously so can make device be easy to squeeze into; In addition owing to use the utility model to need not blowing out, generally just whole furnace accretions can be disposed in 2～3 hours and continue production, thereby improve production efficiency greatly in blowing-out.

Description of drawings

Fig. 1 is a structure iron of the present utility model

Fig. 2 is a user mode synoptic diagram of the present utility model

Embodiment

Following with reference to accompanying drawing to structure of the present utility model and make as describing in further detail.

With reference to Fig. 1, the utility model adopts ∮ 50 or ∮ 45 garden steel processing and fabricatings, and its lower end is a bore bit, and the middle part is a blasting cartridge, and the upper end is a seal cartridge.Bore bit 1 is for pointed and be solidified as a whole with blasting cartridge 2; The inwall of blasting cartridge 2 is hollow cavity, in this hollow cavity swelling agent 4 is housed, and this swelling agent is mainly formed by the configuration of raw materials such as tritonal, powdered carbon, yellow mud; One side of this hollow chamber outer wall is processed into flute profile explosion face 3, to reduce the outer wall thickness of open tube, is convenient to swelling agent expanded back explosion fast; The intravital afterbody in blasting cartridge 2 chambeies is filled with yellow mud 5, in order to guarantee the security of swelling agent when manually with sledgehammer bore bit being squeezed into furnace accretion; The afterbody cavity inner wall of blasting cartridge 2 is provided with connecting thread 7, and connecting double end plug wire 6, this double end plug wire is both as the sealing cover of blasting cartridge 2 cavitys, again as with the connecting joint of the fine instrument 8 of six square steel, to constitute the fine one-piece construction A of expanded steel.

With reference to Fig. 2, when the utility model is handled lead smelting blast furnace furnace accretion, connecting joint 6 and the fine instrument 8 of six square steel are welded, by the fine bar of hammering six square steel expanded steel fibre device is squeezed into and carried out explosion in the furnace accretion.Smelting 9 in the blast furnace shown in Fig. 2 is the stove seat, and 10 is the air port, and 11 is furnace accretion, and 12 is charging workbench, and 13 is fire door, and 14 is petticoat pipe, 15 sledgehammers, and 16 is coke layer in the stove, 17 is the plumbous liquid of stove guiding principle.When using the utility model to handle furnace accretion, to smelt material in the blast furnace earlier leans on and stops phoenix after body is reduced to the air port, be about to stop phoenix after coke layer 16 is reduced to air port 10 in the stove, and add an amount of coke to tuyere zone, then with joint 6 welding of joint 8 with the fine device A of expanded steel of the six square steel pricker instruments of ready 3～4m, the people stands on the charging workbench 12, after squeezing in the expanded point the fine device A of expanded steel about dark 400mm fast with sledgehammer 15, the people leaves cleaning door fast and stands in secure location, and the fine tool bar of six square steel held with iron wire, prevent that the fine device of expanded steel from falling in the stove after expanded.When the fine device A of expanded steel enter furnace accretion under the high temperature after 4～8 minutes in, swelling agent 4 is heated to more than 300 ℃ in the fine device of expanded steel gradually, and at this moment, swelling agent in the fine device of expanded steel expanded reaction takes place, produce bursting force, furnace accretion 11 is shaken to split fall in the stove.In hearing stove behind the expanded sound, extract the fine instrument 8 of six square steel out and watch situation in the stove, choose once more expanded point, on the fine instrument 8 of six square steel, connect the fine device of another expanded steel again, operate by said process, explode the furnace accretion of the second secondary selected location, repeatable operation is till exploding all furnace accretions fall removing totally successively.

Experiment shows, it is very fast manually to beat the time that sledgehammer pounds the 400mm degree of depth in the furnace accretion with the utility model, and promptly having only is about 2 minutes; The time that expanded blast takes place in furnace accretion the fine device of expanded steel is 4～8 minutes; Handling the whole furnace accretions of whole blast furnace only needs 1～3 hour, and handling furnace accretion than prior art needs 4～5 days time to shorten nearly 20 times, and safety, reliable, need not blowing out.The utility model can be used for removing various steelmaking furnace furnace accretions, particularly can be used as the special-purpose cupola drop knot instrument of nonferrous smelting blast furnace or blast furnace, cupola furnace.

For those skilled in the art; after having understood content of the present utility model; all may be under the situation that does not deviate from technical solutions of the utility model; carry out various corrections and change on form and the details, but these are based on the correction of the utility model thought with change still within claim protection domain of the present utility model.

Claims

1. the fine device of a steelmaking furnace special swelling steel, it is characterized in that comprising a blasting cartridge (2), the middle part of this blasting cartridge is hollow cavity, and swelling agent (4) is housed in the cavity, the front end of blasting cartridge is a pointed fine head (1), and the tail end of blasting cartridge connects sealing cover (6).

2. the fine device of expanded steel according to claim 1 is characterized in that a side of described hollow chamber outer wall is provided with flute profile explosion face (3).

3. the fine device of expanded steel according to claim 1 is characterized in that described sealing cover (6) adopts the double end plug wire.

4. ask the fine device of 1 described expanded steel according to right, it is characterized in that described swelling agent (4) is mainly formed by tritonal, powdered carbon, yellow mud configuration.

5. the fine device of expanded steel according to claim 1 is characterized in that being filled with yellow mud (5) in the afterbody cavity of blasting cartridge (2).