CN109517936B - Efficient steelmaking process of steel furnace - Google Patents
Efficient steelmaking process of steel furnace Download PDFInfo
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- CN109517936B CN109517936B CN201910020388.4A CN201910020388A CN109517936B CN 109517936 B CN109517936 B CN 109517936B CN 201910020388 A CN201910020388 A CN 201910020388A CN 109517936 B CN109517936 B CN 109517936B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0025—Adding carbon material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention belongs to the technical field of steelmaking, in particular to an efficient steelmaking process of a steelmaking furnace, which comprises a base and a steelmaking furnace body arranged on the base; the device also comprises an oxygen charger, a smoke exhaust pipe, a treatment absorption unit, an air outlet pipe, a motor and a controller; the controller is used for controlling the operation of the steel furnace; the oxygen filling machine is arranged on the base, is communicated with the steelmaking furnace body through an oxygen conveying pipe and is used for filling oxygen into the interior of the steelmaking furnace body; one end of the smoke exhaust pipe is arranged at the top of the steel making furnace body, the preparation barrel is arranged in the steel making furnace, and the calcium hydroxide solution is prepared in the preparation barrel, so that the coke particles are efficiently heated and dried by utilizing heat generated by preparing the calcium hydroxide solution, the contact area of the coke particles and hot gas is greatly increased, the coke particles are efficiently heated and dried, and the steel making efficiency of the steel making furnace is greatly improved.
Description
Technical Field
The invention belongs to the technical field of steelmaking, and particularly relates to an efficient steelmaking process of a steelmaking furnace.
Background
The steel is a general name of iron-carbon alloy with the carbon content of 0.02-2.11% by mass, the application and research history of human beings on the steel is quite long, but the preparation of the steel is a high-cost and low-efficiency work until the invention of the 19 th century Behcet's steelmaking method, nowadays, the steel becomes one of the most used materials in the world with the low price and reliable performance, and is an indispensable component in the building industry, the manufacturing industry and the daily life of people, and the steel is obtained by smelting pig iron for steelmaking in a steelmaking furnace according to a certain process.
Patent 1 (CN 101717840A) discloses an electric furnace steelmaking method using graphite-like to replace pig iron for carbon blending, and specifically discloses: when the smelting method is adopted, the melting carbon is generally below 0.30 percent, the smelting end point is difficult to control, the molten steel peroxidation phenomenon is serious, the consumption of coke particles is above 15kg/t steel, the consumption is large, the steel iron material consumption index is high, and the smelting cost is increased. Patent 2 (CN 1121114A) discloses a slag pressing agent for oxygen top-blown converter and a production method thereof, and specifically discloses: the invention aims to provide a slag pressing agent for an oxygen top-blown converter, which comprises 20-40% of carbonized rice hulls, 20-40% of coke particles, 20-40% of carbon, 3-5% of fluorite and 0.5-5% of acidified graphite.
In the prior art, a small amount of coke particles are added into a steel making furnace for assistance during steel making, the coke particles are conveyed into a steel making plant and directly stacked in an open place before steel making, and are influenced by humidity in the air, so that when the coke particles are required to be used, a large amount of water is absorbed in the coke particles, the combustion of the coke particles is influenced, and the steel making efficiency of the steel making furnace is influenced; so that the technical solution is limited.
Disclosure of Invention
In order to make up the defects of the prior art, the problem that the combustion of coke particles is influenced due to more moisture in the coke particles is solved; the invention provides an efficient steelmaking process of a steelmaking furnace.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an efficient steelmaking process of a steelmaking furnace, which comprises the following steps:
s1: placing a preparation barrel for preparing a calcium hydroxide solution in a steelmaking furnace, and filling coke particles for steelmaking between the preparation barrel and the steelmaking furnace;
s2: a plurality of rows of iron pipes are uniformly arranged in the coke particles, two ends of each iron pipe are respectively contacted with the inner walls of the preparation barrel and the steel making furnace, a plurality of vent holes are formed in the iron pipes, and the iron pipes are used for transferring heat;
s3: pouring calcium oxide powder into a preparation barrel and adding water to prepare a calcium hydroxide solution, wherein the calcium oxide powder and the water react to release a large amount of heat so as to heat coke particles and an iron pipe outside the preparation barrel;
s4: taking out the preparation barrel, pouring out the calcium hydroxide solution for treating waste gas in steelmaking of the steelmaking furnace, sucking out an iron pipe in the steelmaking furnace through electromagnet, and only leaving coke particles in the steelmaking furnace;
s5: putting the steel material into a steelmaking furnace, and starting the steelmaking furnace to perform steelmaking;
the steel-making furnace adopted by the invention comprises a base and a steel-making furnace body arranged on the base; the device also comprises an oxygen charger, a smoke exhaust pipe, a treatment absorption unit, an air outlet pipe, a motor and a controller; the controller is used for controlling the operation of the steel furnace; the oxygen filling machine is arranged on the base, is communicated with the steelmaking furnace body through an oxygen conveying pipe and is used for filling oxygen into the interior of the steelmaking furnace body; one end of the smoke exhaust pipe is arranged at the top of the steelmaking furnace body, the other end of the smoke exhaust pipe is arranged in the treatment absorption unit, and the smoke exhaust pipe is used for exhausting smoke in the steelmaking furnace body into the treatment absorption unit; the treatment absorption unit is arranged on the base through the upright column and is used for efficiently treating the waste gas; the gas outlet pipe is arranged on the waste gas treatment device; the motor is arranged on the base and connected with the processing absorption unit, and the motor is used for providing power for the processing absorption unit; wherein the content of the first and second substances,
the treatment absorption unit comprises a first treatment box, a second treatment box, a cylinder, a limiting ring, a first spring, a first communicating pipe, a second communicating pipe, a straight pipe, an annular pipe, an air hole, a crushing blade, a telescopic rod, an impeller, a mounting plate, a rotating shaft, a cam, a sleeve, a filter screen, a sliding plate, a rack, a gear, a support plate and a second spring; the first treatment box is arranged on the base through an upright post, a calcium hydroxide solution is arranged in the first treatment box, and the calcium hydroxide solution is used for absorbing sulfur dioxide in waste gas; a smoke exhaust pipe penetrates through the top wall of the first treatment box; a limiting ring is rotatably sleeved on the air outlet of the smoke exhaust pipe; the limiting ring is arranged on the inner wall of the cylinder in a sliding manner and is used for limiting the cylinder, so that the cylinder cannot be separated from the smoke exhaust pipe; the smoke exhaust pipe penetrates through the air cylinder in a rotating mode, and the air cylinder can rotate on the smoke exhaust pipe; a first spring is sleeved on the smoke exhaust pipe; the first spring is positioned in the cylinder and used for resetting the cylinder; the first communicating pipe is arranged on the outer bottom wall of the cylinder; one end of the second communicating pipe is communicated with the side wall of the first communicating pipe, the other end of the second communicating pipe is communicated with the side wall of the cylinder, the second communicating pipe is used for communicating the first communicating pipe with the cylinder, and when the cylinder drives the second communicating pipe to slide downwards below the limiting ring, the first communicating pipe is communicated with the smoke exhaust pipe through the cylinder; the side wall of the first communicating pipe is provided with a plurality of layers of straight pipes in a penetrating manner, each layer of straight pipes are uniformly distributed in the circumferential direction of the first communicating pipe, the length of each layer of straight pipes is increased from bottom to top in sequence, and each layer of straight pipe is provided with an annular pipe in a penetrating manner; the annular pipe is provided with a plurality of air holes, and through the matching among the air holes, the annular pipe, the straight pipe and the first communicating pipe, the flue gas in the first communicating pipe can be sprayed out through the air holes; the crushing blades are arranged on the side wall of the first communicating pipe, the crushing blades are positioned above the annular pipe, and the crushing blades are positioned to crush bubbles blown out of the air holes; one end of the telescopic rod is arranged on the bottom wall of the first communicating pipe, the other end of the telescopic rod penetrates through the bottom wall of the first processing box in a rotating mode to reach the outside of the first processing box and is connected with an output shaft of a motor, and the motor is used for driving the first communicating pipe to rotate; the second treatment box is arranged on the right side wall of the first treatment box, the second treatment box is communicated with the first treatment box through a communication port, and an air outlet pipe is arranged on the right side wall of the second treatment box in a penetrating manner; the mounting plate is arranged at the bottom of the second processing box, and a rotating shaft is rotatably arranged on the mounting plate; one end of the rotating shaft is provided with an impeller, the other end of the impeller rotatably penetrates through the filter screen and is provided with a cam, the position of the impeller corresponds to the communication port, and the impeller can drive the cam to rotate under the blowing of smoke; the sleeve is arranged on the inner wall of the second treatment box, two symmetrical grooves are formed in the upper side and the lower side of the sleeve, and filter screens are arranged at the two ends of the sleeve; the upper end and the lower end of each sliding plate are respectively arranged in the grooves on the sleeve in a sliding manner, through holes for waste gas to flow are formed in the sliding plates, sliding grooves are formed in the sides, close to each other, of the two sliding plates, and racks are arranged in the sliding grooves in a sliding manner; both sides of the rack are connected with the side wall of the sliding chute through a second spring, and the two racks are simultaneously meshed and driven with the same gear; the gear is rotatably arranged on the second treatment box, a plurality of supporting plates are arranged on one sides, away from each other, of the two sliding plates, calcium oxide powder is placed on the supporting plates, and the calcium oxide powder is used for absorbing sulfur dioxide gas; the cam rolls and is arranged between the two supporting plates and the cam roll connection, and the cam, the supporting plates, the sliding plate and the second spring are arranged. The rack and the gear are mutually matched, so that the cam can drive the supporting plate to vertically rock when rotating.
Firstly, when a steel smelting furnace body smelts steel, an oxygenating machine is started, the oxygenating machine oxygenates oxygen into the steel smelting furnace body to accelerate combustion in the steel smelting furnace body, simultaneously exhaust gas is discharged from a smoke discharge pipe, the exhaust gas discharged from the smoke discharge pipe is inflated into a cylinder, the cylinder is pushed downwards by the exhaust gas due to the sealing effect of a limiting ring in the cylinder, the cylinder drives a first communicating pipe to move downwards, so that a ring pipe and a crushing blade are immersed in calcium hydroxide solution, when the cylinder drives a second communicating pipe to slide below the limiting ring, the exhaust gas in the smoke discharge pipe sequentially passes through the cylinder, the second communicating pipe, the first communicating pipe and a straight pipe to reach the ring pipe, the exhaust gas is ejected outwards through air holes in the ring pipe to form bubbles, the bubbles are contacted with the calcium hydroxide solution, so that sulfur dioxide gas in the bubbles is absorbed, a motor is started, and the motor drives the first communicating pipe to, because the lengths of all layers of straight pipes are sequentially increased from bottom to top, bubbles blown out from the air holes can be smashed by the straight pipes when floating upwards, so that the contact area between the bubbles and calcium hydroxide gas is increased, the absorption effect of sulfur dioxide gas is improved, the bubbles continuously float upwards, the smashing blades can smash the bubbles again, waste gas is fully reacted with calcium hydroxide, and the absorption effect of a calcium hydroxide solution on the sulfur dioxide gas is further improved; waste gas purified by calcium hydroxide solution is filled into the second treatment box through a communication port between the first treatment box and the second treatment box, the waste gas blows an impeller at the moment, the impeller drives a cam to rotate, the cam drives a supporting plate, the two sliding plates are shaken up and down through the matching between the sliding plate, the supporting plate, the second spring, the rack and the gear, the supporting plate is shaken up and down under the driving of the sliding plate, calcium oxide powder is lifted up, the contact area between calcium oxide and the waste gas is increased, the calcium oxide can efficiently absorb sulfur dioxide, and the content of the sulfur dioxide in the waste gas is further reduced; finally, discharging the purified waste gas from an air outlet pipe; after the steel-making furnace body stops discharging waste gas, the first spring recovers elasticity, the cylinder is jacked upwards to reset, the annular pipe is moved out of the calcium hydroxide solution upwards, and therefore the calcium hydroxide solution is prevented from being sucked into the smoke exhaust pipe.
Preferably, the smoke exhaust pipe is provided with a dust treatment unit, and the dust treatment unit is used for removing dust in the waste gas and reducing the temperature of the waste gas. The dust processing unit can avoid the dust in the waste gas to merge into calcium hydroxide solution, pollutes calcium hydroxide solution, avoids the waste gas of high temperature to evaporate the moisture in the calcium hydroxide solution simultaneously for the too high influence of calcium hydroxide solution viscosity is used.
Preferably, the dust treatment unit comprises a dust treatment box, a W-shaped channel, a drain pipe, a dust collection box, a spray header, a spray pipe, a water tank and a water pump; the dust collecting box is arranged on the side wall of the first processing box, one end of the dust processing box, which is provided with a drain pipe in a penetrating way, is arranged at the bottom of the dust processing box, and the other end of the drain pipe is arranged at the bottom of the dust processing box; the dust treatment box is arranged on the smoke exhaust pipe, a W-shaped channel is arranged in the dust treatment box, two ends of the W-shaped channel are respectively connected to the smoke exhaust pipe, a flow guide hole for discharging sewage is formed in the lower side of the W-shaped channel, and a spray head is arranged on the upper side of the W-shaped channel; the spray header is used for spraying water to the waste gas in the W-shaped channel and is connected with the water pump through a spray pipe; the water pump is arranged in the water tank and used for supplying water to the spray head; the water tank is arranged at the top of the first treatment box. The water pump is started, and the water pump sprays water to the high-temperature waste gas in the W type passageway through shower and shower nozzle, can carry out the efficient cooling to high-temperature waste gas on the one hand, and on the other hand can be drenched the dust in the waste gas, makes the dust become heavy to in the water conservancy diversion hole entering blow-off pipe that the downside through W type passageway was seted up, and fall into and retrieve in the dust collecting box.
Preferably, an air outlet of the air outlet pipe is provided with an air pump; the air suction pump is arranged on the outer side wall of the second treatment box and used for accelerating the flow of the smoke in the second treatment box. The aspiration pump has increased the flow of flue gas when bleeding, makes to make the flue gas can blow calcium oxide powder, with the more dispersion that calcium oxide powder blown, has further increaseed the area of contact of calcium oxide powder with the waste gas, has improved the absorption effect to sulfur dioxide gas, also makes the rotation of impeller rapider simultaneously, has improved the frequency of rocking of backup pad for calcium oxide powder is by better raising, has further improved the absorption effect to sulfur dioxide gas.
Preferably, the diameter of the air holes is 1-3mm, so that the volume of air bubbles blown out by the air holes is reduced, and the contact area of the waste gas and the calcium hydroxide is increased.
Preferably, the oxygen conveying pipe on the oxygen charger is wound on the smoke exhaust pipe and used for absorbing heat on the smoke exhaust pipe by the oxygen conveying pipe. After the oxygen charger is started, oxygen can be heated by the smoke exhaust pipe when being conveyed in the oxygen conveying pipe, so that the oxygen can be better combusted in the steelmaking furnace body in an auxiliary mode.
The invention has the following beneficial effects:
1. according to the efficient steelmaking process of the steel furnace, the preparation barrel is placed in the steel furnace, and the calcium hydroxide solution is prepared in the preparation barrel, so that the coke particles are efficiently heated and dried by utilizing the heat generated by preparing the calcium hydroxide solution, the contact area of the coke particles and hot gas is greatly increased, the coke particles are efficiently heated and dried, and the steelmaking efficiency of the steel furnace is greatly improved.
2. The steel-making furnace adopted by the invention realizes the full crushing of the waste gas in the calcium hydroxide solution by arranging the straight pipe, the annular pipe, the motor and the crushing blade, thereby greatly improving the absorption effect of the calcium hydroxide solution on the sulfur dioxide gas; the full absorption of calcium oxide to sulfur dioxide gas is realized by arranging the impeller, the cam, the supporting plate and the gear; the calcium hydroxide solution and the calcium oxide powder are adopted to carry out double absorption on the sulfur dioxide gas in the waste gas, so that the sufficient absorption of the sulfur dioxide gas is realized.
3. According to the steel making furnace, the dust treatment unit is arranged, so that the dust treatment unit can prevent dust in the waste gas from being fused into the calcium hydroxide solution to pollute the calcium hydroxide solution, and meanwhile, the high-temperature waste gas is prevented from evaporating water in the calcium hydroxide solution, so that the calcium hydroxide solution is prevented from being too high in viscosity to affect use.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a front view of a steel furnace used in the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a cross-sectional view of C-C of FIG. 2;
in the figure: the device comprises an oxygenator 1, a smoke exhaust pipe 2, a treatment absorption unit 3, a first treatment box 301, a second treatment box 302, an air cylinder 303, a limiting ring 304, a first spring 305, a first communicating pipe 306, a second communicating pipe 307, a straight pipe 308, an annular pipe 309, an air hole 310, a crushing blade 311, an expansion rod 312, an impeller 313, a mounting plate 314, a rotating shaft 315, a cam 316, a sleeve 317, a filter screen 318, a sliding plate 319, a rack 320, a gear 321, a support plate 322, a second spring 323, an air outlet pipe 4, an air suction pump 41, a dust treatment unit 5, a dust treatment box 51, a W-shaped channel 52, a sewage discharge pipe 53, a dust collection box 54, a spray head 55, a spray pipe 56 and a water tank 57.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in FIGS. 1 to 5, the high-efficiency steelmaking process of the steelmaking furnace of the present invention comprises the following steps:
s1: placing a preparation barrel for preparing a calcium hydroxide solution in a steelmaking furnace, and filling coke particles for steelmaking between the preparation barrel and the steelmaking furnace;
s2: a plurality of rows of iron pipes are uniformly arranged in the coke particles, two ends of each iron pipe are respectively contacted with the inner walls of the preparation barrel and the steel making furnace, a plurality of vent holes are formed in the iron pipes, and the iron pipes are used for transferring heat;
s3: pouring calcium oxide powder into a preparation barrel and adding water to prepare a calcium hydroxide solution, wherein the calcium oxide powder and the water react to release a large amount of heat so as to heat coke particles and an iron pipe outside the preparation barrel;
s4: taking out the preparation barrel, pouring out the calcium hydroxide solution for treating waste gas in steelmaking of the steelmaking furnace, sucking out an iron pipe in the steelmaking furnace through electromagnet, and only leaving coke particles in the steelmaking furnace;
s5: putting the steel material into a steelmaking furnace, and starting the steelmaking furnace to perform steelmaking;
the steel-making furnace adopted by the invention comprises a base and a steel-making furnace body arranged on the base; the device also comprises an oxygenator 1, a smoke exhaust pipe 2, a treatment absorption unit 3, an air outlet pipe 4, a motor and a controller; the controller is used for controlling the operation of the steel furnace; the oxygen filling machine 1 is arranged on the base, the oxygen filling machine 1 is communicated with the steel-making furnace body through an oxygen conveying pipe, and the oxygen filling machine 1 is used for filling oxygen into the furnace body; one end of the smoke exhaust pipe 2 is arranged at the top of the steelmaking furnace body, the other end of the smoke exhaust pipe 2 is arranged in the treatment absorption unit 3, and the smoke exhaust pipe 2 is used for exhausting smoke in the steelmaking furnace body into the treatment absorption unit 3; the treatment absorption unit 3 is arranged on the base through a vertical column, and the treatment absorption unit 3 is used for efficiently treating the waste gas; the gas outlet pipe 4 is arranged on the waste gas treatment device; the motor is arranged on the base and connected with the treatment absorption unit 3, and the motor is used for providing power for the treatment absorption unit 3; wherein the content of the first and second substances,
the treatment absorption unit 3 comprises a first treatment box 301, a second treatment box 302, a cylinder 303, a limiting ring 304, a first spring 305, a first communicating pipe 306, a second communicating pipe 307, a straight pipe 308, a ring pipe 309, an air hole 310, a crushing blade 311, an expansion rod 312, an impeller 313, a mounting plate 314, a rotating shaft 315, a cam 316, a sleeve 317, a filter screen 318, a sliding plate 319, a rack 320, a gear 321, a support plate 322 and a second spring 323; the first treatment tank 301 is arranged on the base through an upright post, a calcium hydroxide solution is arranged in the first treatment tank 301, and the calcium hydroxide solution is used for absorbing sulfur dioxide in the waste gas; a smoke exhaust pipe 2 penetrates through the top wall of the first treatment box 301; a limiting ring 304 is rotatably sleeved on the air outlet of the smoke exhaust pipe 2; the limiting ring 304 is arranged on the inner wall of the air cylinder 303 in a sliding manner, and the limiting ring 304 is used for limiting the air cylinder 303, so that the air cylinder 303 cannot be separated from the smoke exhaust pipe 2; the smoke exhaust pipe 2 penetrates through the air cylinder 303 in a rotating mode, and the air cylinder 303 can rotate on the smoke exhaust pipe 2; a first spring 305 is sleeved on the smoke exhaust pipe 2; the first spring 305 is positioned in the air cylinder 303, and the first spring 305 is used for resetting the air cylinder 303; the first communicating pipe 306 is arranged on the outer bottom wall of the cylinder 303; one end of the second communicating pipe 307 is in through connection with the side wall of the first communicating pipe 306, the other end of the second communicating pipe 307 is in through connection with the side wall of the cylinder 303, the second communicating pipe 307 is used for communicating the first communicating pipe 306 with the cylinder 303, and when the cylinder 303 drives the second communicating pipe 307 to slide downwards to the lower side of the limiting ring 304, the first communicating pipe 306 is communicated with the smoke exhaust pipe 2 through the cylinder 303; a plurality of layers of straight pipes 308 are arranged on the side wall of the first communicating pipe 306 in a penetrating manner, each layer of straight pipes 308 are uniformly distributed in the circumferential direction of the first communicating pipe 306, the length of each layer of straight pipes 308 increases from bottom to top in sequence, and each layer of straight pipes 308 is provided with an annular pipe 309 in a penetrating manner; a plurality of air holes 310 are formed in the annular pipe 309, and through the cooperation among the air holes 310, the annular pipe 309, the straight pipe 308 and the first communicating pipe 306, the flue gas in the first communicating pipe 306 can be ejected through the air holes 310; the crushing blades 311 are arranged on the side wall of the first communicating pipe 306, the crushing blades 311 are positioned above the annular pipe 309, and the crushing blades 311 are positioned to crush bubbles blown out from the air holes 310; one end of the telescopic rod 312 is arranged on the bottom wall of the first communicating pipe 306, the other end of the telescopic rod 312 penetrates through the bottom wall of the first processing box 301 in a rotating mode to reach the outside of the first processing box 301 and is connected with an output shaft of a motor, and the motor is used for driving the first communicating pipe 306 to rotate; the second treatment box 302 is arranged on the right side wall of the first treatment box 301, the second treatment box 302 is communicated with the first treatment box 301 through a communication port, and an air outlet pipe 4 is arranged on the right side wall of the second treatment box 302 in a penetrating manner; the mounting plate 314 is arranged at the bottom of the second processing box 302, and a rotating shaft 315 is rotatably arranged on the mounting plate 314; one end of the rotating shaft 315 is provided with an impeller 313, the other end of the impeller 313 penetrates through the filter screen 318 in a rotating manner and is provided with a cam 316, the position of the impeller 313 corresponds to the communication port, and the impeller 313 can drive the cam 316 to rotate under the blowing of smoke; the sleeve 317 is arranged on the inner wall of the second treatment box 302, two symmetrical grooves are formed in the upper side and the lower side of the sleeve 317, and filter screens 318 are arranged at the two ends of the sleeve 317; the upper end and the lower end of each of the two sliding plates 319 are respectively arranged in a groove of the sleeve 317 in a sliding manner, a through hole for flowing waste gas is formed in each sliding plate 319, sliding grooves are formed in the sides, close to each other, of the two sliding plates 319, and racks 320 are arranged in the sliding grooves in a sliding manner; both sides of the rack 320 are connected with the side wall of the chute through a second spring 323, and the two racks 320 are simultaneously meshed and driven with a same gear 321; the gear 321 is rotatably arranged on the second treatment box 302, a plurality of support plates 322 are arranged on the sides, away from each other, of the two sliding plates 319, calcium oxide powder is placed on the support plates 322, and the calcium oxide powder is used for absorbing sulfur dioxide gas; the cam 316 is arranged between two support plates 322 and the cam 316 in a rolling way, and passes through the cam 316, the support plates 322, a sliding plate 319 and a second spring 323. The rack 320 and the gear 321 cooperate with each other, so that the cam 316 can drive the support plate 322 to swing up and down when rotating.
Firstly, when steel is smelted in a steel smelting furnace body, the oxygenator 1 is started, the oxygenator 1 oxygenizes oxygen into the steel smelting furnace body, the combustion in the steel smelting furnace body is accelerated, simultaneously, waste gas is discharged from the smoke discharge pipe 2, the waste gas discharged from the smoke discharge pipe 2 is inflated into the cylinder 303, the cylinder 303 is pushed downwards by the waste gas due to the sealing effect of the limiting ring 304 in the cylinder 303, the cylinder 303 drives the first communicating pipe 306 to move downwards, the annular pipe 309 and the crushing blades 311 are immersed in a calcium hydroxide solution, when the cylinder 303 drives the second communicating pipe 307 to slide below the limiting ring 304, the waste gas in the smoke discharge pipe 2 sequentially passes through the cylinder 303, the second communicating pipe 307, the first communicating pipe 306 and the straight pipe 308 to reach the annular pipe 309, the waste gas is ejected outwards through the air holes 310 on the annular pipe 309 to form bubbles, the bubbles are contacted with the calcium hydroxide solution, and therefore sulfur dioxide gas in the bubbles is absorbed, the motor is started, the motor drives the first communicating pipe 306 to rotate through the telescopic rod 312, and as the lengths of all layers of straight pipes 308 are sequentially increased from bottom to top, bubbles blown out of the air holes 310 can be smashed by the straight pipes 308 when floating upwards, so that the contact area of the bubbles and calcium hydroxide gas is increased, the absorption effect of sulfur dioxide gas is improved, the bubbles continue to float upwards, the smashing blades 311 can smash the bubbles again, waste gas is fully reacted with calcium hydroxide, and the absorption effect of a calcium hydroxide solution on the sulfur dioxide gas is further improved; waste gas purified by calcium hydroxide solution is filled into the second treatment box 302 through a communication port between the first treatment box 301 and the second treatment box 302, at the moment, the waste gas blows the impeller 313, so that the impeller 313 drives the cam 316 to rotate, the cam 316 stirs the supporting plate 322, the two sliding plates 319 rock up and down through the matching among the sliding plate 319, the supporting plate 322, the second spring 323, the rack 320 and the gear 321, the supporting plate 322 rocks up and down under the driving of the sliding plate 319, calcium oxide powder is enabled to be lifted, the contact area between the calcium oxide and the waste gas is increased, the calcium oxide efficiently absorbs sulfur dioxide, and the content of the sulfur dioxide in the waste gas is further reduced; finally, the purified waste gas is discharged from the gas outlet pipe 4; after the steel-making furnace body stops discharging the waste gas, the first spring 305 recovers elasticity, the cylinder 303 is jacked upwards to reset, the annular pipe 309 is moved upwards out of the calcium hydroxide solution, and therefore the calcium hydroxide solution is prevented from being sucked into the smoke exhaust pipe 2.
In one embodiment of the present invention, the smoke exhaust pipe 2 is provided with a dust treatment unit 5, and the dust treatment unit 5 is used for removing dust in the exhaust gas and reducing the temperature of the exhaust gas. The dust processing unit 5 can prevent dust in the waste gas from being mixed into the calcium hydroxide solution to pollute the calcium hydroxide solution, and simultaneously prevent the high-temperature waste gas from evaporating water in the calcium hydroxide solution, so that the use of the calcium hydroxide solution is influenced by too high viscosity.
As an embodiment of the present invention, the dust processing unit 5 includes a dust processing box 51, a W-shaped passage 52, a soil discharge pipe 53, a dust collection box 54, a shower head 55, a shower pipe 56, a water tank 57, and a water pump; the dust collecting box 54 is arranged on the side wall of the first processing box 301, one end of a sewage discharge pipe 53 penetrates through the dust processing box 51, and the other end of the sewage discharge pipe 53 is arranged at the bottom of the dust processing box 51; the dust treatment box 51 is arranged on the smoke exhaust pipe 2, a W-shaped channel 52 is arranged in the dust treatment box 51, two ends of the W-shaped channel 52 are respectively connected to the smoke exhaust pipe 2, a flow guide hole for pollution discharge is formed in the lower side of the W-shaped channel 52, and a spray header 55 is arranged on the upper side of the W-shaped channel 52; the spray header 55 is used for spraying water to the waste gas in the W-shaped channel 52, and the spray header 55 is connected with a water pump through a spray pipe 56; the water pump is arranged in the water tank 57 and is used for supplying water to the spray head; the water tank 57 is provided at the top of the first treatment tank 301. The water pump is started, and the water pump sprays water to the high-temperature waste gas in the W-shaped channel 52 through the spray pipe 56 and the spray head, so that on one hand, the high-temperature waste gas can be efficiently cooled, on the other hand, the dust in the waste gas can be wetted, the dust becomes heavy, and therefore the water guide hole formed in the lower side of the W-shaped channel 52 enters the sewage discharge pipe 53 and falls into the dust collection box 54 to be recycled.
As an embodiment of the present invention, an air outlet of the air outlet pipe 4 is provided with an air pump 41; the suction pump 41 is arranged on the outer side wall of the second treatment tank 302, and the suction pump 41 is used for accelerating the flow of the flue gas in the second treatment tank 302. The aspiration pump 41 has increased the flow of flue gas when bleeding for the flue gas can blow the calcium oxide powder, with the more dispersion that the calcium oxide powder was blown, further increaseed the area of contact of calcium oxide powder and waste gas, improved the absorption effect to the sulfur dioxide gas, also make the rotation of impeller 313 quicker simultaneously, improved the frequency of rocking of backup pad 322, make the calcium oxide powder by better rais, further improved the absorption effect to the sulfur dioxide gas.
In one embodiment of the present invention, the diameter of the air holes 310 is between 1 mm and 3mm, so that the volume of the air bubbles blown out from the air holes 310 is reduced, thereby increasing the contact area between the waste gas and the calcium hydroxide.
As an embodiment of the invention, the oxygen conveying pipe on the oxygen charger 1 is wound on the smoke exhaust pipe 2 and is used for absorbing heat on the smoke exhaust pipe 2 by the oxygen conveying pipe. After the oxygen charger 1 is started, oxygen is heated by the smoke exhaust pipe 2 when being conveyed in the oxygen conveying pipe, so that the oxygen can be better combusted in the steel making furnace body in an auxiliary mode.
When in use, a preparation barrel for preparing a calcium hydroxide solution is placed in the steelmaking furnace, and coke particles for steelmaking are filled between the preparation barrel and the steelmaking furnace; a plurality of rows of iron pipes are uniformly arranged in the coke particles, two ends of each iron pipe are respectively contacted with the inner walls of the preparation barrel and the steelmaking furnace, a plurality of vent holes are formed in the iron pipes, and the iron pipes are used for transferring heat; pouring calcium oxide powder into the preparation barrel and adding water to prepare a calcium hydroxide solution, wherein the calcium oxide powder can release a large amount of heat after reacting with the water, so that coke particles and an iron pipe outside the preparation barrel are heated; the coke particles are heated to evaporate water in the coke particles, so that the coke particles become drier and are easy to burn; the iron pipe transfers heat, so that the heat is more uniformly transferred to the coke particles, water in the coke particles is more completely evaporated, the air in the iron pipe is heated and expanded, and the expanded gas is sprayed out through the vent holes in the iron pipe, so that the hot gas shuttles among the coke particles, the contact area between the coke particles and the hot gas is greatly increased, the coke particles are efficiently heated and dried, and the steelmaking efficiency of the steelmaking furnace is greatly improved; taking out the preparation barrel, pouring out the calcium hydroxide solution for treating waste gas in steelmaking of the steelmaking furnace, sucking out an iron pipe in the steelmaking furnace through an electromagnet, and only leaving coke in the steelmaking furnace; putting steel materials into a steelmaking furnace, starting the steelmaking furnace to perform steelmaking, starting an oxygenator 1 when the steelmaking furnace body smelts the steel materials, oxygenating oxygen into the steelmaking furnace body by the oxygenator 1 to accelerate combustion in the steelmaking furnace body, and simultaneously discharging waste gas from a smoke exhaust pipe 2; starting a water pump, spraying water to the high-temperature waste gas in the W-shaped channel 52 by the water pump through the spraying pipe 56 and the spray head, on one hand, efficiently cooling the high-temperature waste gas, on the other hand, wetting dust in the waste gas to make the dust heavy, so that the dust enters the sewage discharge pipe 53 through the flow guide hole formed in the lower side of the W-shaped channel 52 and falls into the dust collection box 54 to be recycled, the waste gas discharged from the smoke exhaust pipe 2 is filled into the cylinder 303, the cylinder 303 is pushed downwards by the waste gas due to the sealing effect of the limiting ring 304 in the cylinder 303, the cylinder 303 drives the first communicating pipe 306 to move downwards, the annular pipe 309 and the crushing blade 311 are immersed in the calcium hydroxide solution, and when the cylinder 303 drives the second communicating pipe 307 to slide below the limiting ring 304, waste bodies in the smoke exhaust pipe 2 sequentially pass through the cylinder 303, the second communicating pipe 307 and the first communicating pipe 306, The straight pipe 308 reaches the annular pipe 309, the waste gas is sprayed outwards through the air holes 310 in the annular pipe 309 to form bubbles, the bubbles are in contact with the calcium hydroxide solution, so that sulfur dioxide gas in the bubbles is absorbed, the motor is started, the motor drives the first communicating pipe 306 to rotate through the telescopic rod 312, and as the lengths of all layers of straight pipes 308 are sequentially increased from bottom to top, the bubbles blown out of the air holes 310 can be smashed by the straight pipes 308 when floating upwards, so that the contact area between the bubbles and the calcium hydroxide gas is increased, the absorption effect of the sulfur dioxide gas is improved, the bubbles continuously float upwards, the bubbles can be smashed again by the smashing blades 311, the waste gas is fully reacted with the calcium hydroxide, and the absorption effect of the calcium hydroxide solution on the sulfur dioxide gas is further improved; waste gas purified by calcium hydroxide solution is filled into the second treatment box 302 through a communication port between the first treatment box 301 and the second treatment box 302, at the moment, the waste gas blows the impeller 313, so that the impeller 313 drives the cam 316 to rotate, the cam 316 stirs the supporting plate 322, the two sliding plates 319 are shaken up and down through the matching among the sliding plates 319, the supporting plate 322, the second spring 323, the rack 320 and the gear 321, the supporting plate 322 is shaken up and down under the driving of the sliding plates 319, calcium oxide powder is lifted, the contact area between the calcium oxide and the waste gas is increased, the calcium oxide efficiently absorbs sulfur dioxide, and the content of the sulfur dioxide in the waste gas is further reduced; the air extracting pump 41 increases the flow of the flue gas when extracting air, so that the flue gas can blow the calcium oxide powder, the calcium oxide powder is blown more dispersedly, the contact area of the calcium oxide powder and the waste gas is further increased, the absorption effect on the sulfur dioxide gas is improved, meanwhile, the impeller 313 is rotated more quickly, the shaking frequency of the support plate 322 is improved, the calcium oxide powder is better lifted, and the absorption effect on the sulfur dioxide gas is further improved; finally, the purified waste gas is discharged from the gas outlet pipe 4; after the steel-making furnace body stops discharging waste gas, the first spring 305 recovers elasticity, the air cylinder 303 is jacked upwards to reset, the annular pipe 309 is moved out of the calcium hydroxide solution upwards, and therefore the calcium hydroxide solution is prevented from being sucked into the smoke exhaust pipe 2.
The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present invention.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Claims (6)
1. An efficient steelmaking process of a steelmaking furnace is characterized in that: the process comprises the following steps:
s1: placing a preparation barrel for preparing a calcium hydroxide solution in a steelmaking furnace, and filling coke particles for steelmaking between the preparation barrel and the steelmaking furnace;
s2: a plurality of rows of iron pipes are uniformly arranged in the coke particles, two ends of each iron pipe are respectively contacted with the inner walls of the preparation barrel and the steel making furnace, a plurality of vent holes are formed in the iron pipes, and the iron pipes are used for transferring heat;
s3: pouring calcium oxide powder into a preparation barrel and adding water to prepare a calcium hydroxide solution, wherein the calcium oxide powder can release a large amount of heat after reacting with the water, so that coke particles and an iron pipe outside the preparation barrel are heated;
s4: taking out the preparation barrel, pouring out the calcium hydroxide solution for treating waste gas in steelmaking of the steelmaking furnace, sucking out an iron pipe in the steelmaking furnace through an electromagnet, and only leaving coke particles in the steelmaking furnace;
s5: putting the steel material into a steelmaking furnace, and starting the steelmaking furnace to perform steelmaking;
the adopted steel-making furnace comprises a base and a steel-making furnace body arranged on the base; the device also comprises an oxygen filling machine (1), a smoke exhaust pipe (2), a treatment absorption unit (3), an air outlet pipe (4), a motor and a controller; the controller is used for controlling the operation of the steel furnace; the oxygen filling machine (1) is arranged on the base, the oxygen filling machine (1) is communicated with the steel-making furnace body through an oxygen conveying pipe, and the oxygen filling machine (1) is used for filling oxygen into the furnace body; one end of the smoke exhaust pipe (2) is arranged at the top of the steelmaking furnace body, the other end of the smoke exhaust pipe (2) is arranged in the treatment absorption unit (3), and the smoke exhaust pipe (2) is used for exhausting smoke in the steelmaking furnace body into the treatment absorption unit (3); the treatment absorption unit (3) is arranged on the base through the upright post, and the treatment absorption unit (3) is used for efficiently treating the waste gas; the gas outlet pipe (4) is arranged on the waste gas treatment device; the motor is arranged on the base and connected with the treatment absorption unit (3), and the motor is used for providing power for the treatment absorption unit (3); wherein the content of the first and second substances,
the treatment absorption unit (3) comprises a first treatment box (301), a second treatment box (302), an air cylinder (303), a limiting ring (304), a first spring (305), a first communicating pipe (306), a second communicating pipe (307), a straight pipe (308), an annular pipe (309), an air hole (310), a crushing blade (311), an expansion rod (312), an impeller (313), a mounting plate (314), a rotating shaft (315), a cam (316), a sleeve (317), a filter screen (318), a sliding plate (319), a rack (320), a gear (321), a support plate (322) and a second spring (323); the first treatment tank (301) is arranged on the base through the upright posts, a calcium hydroxide solution is arranged in the first treatment tank (301), and the calcium hydroxide solution is used for absorbing sulfur dioxide in waste gas and removing impurities in the waste gas; a smoke exhaust pipe (2) penetrates through the top wall of the first treatment box (301); a limiting ring (304) is rotatably sleeved on the air outlet of the smoke exhaust pipe (2); the limiting ring (304) is arranged on the inner wall of the cylinder (303) in a sliding manner, and the limiting ring (304) is used for limiting the cylinder (303) so that the cylinder (303) cannot be separated from the smoke exhaust pipe (2); the smoke exhaust pipe (2) penetrates through the air cylinder (303) in a rotating mode, and the air cylinder (303) can rotate on the smoke exhaust pipe (2); a first spring (305) is sleeved on the smoke exhaust pipe (2); the first spring (305) is positioned in the air cylinder (303), and the first spring (305) is used for resetting the air cylinder (303); the first communicating pipe (306) is arranged on the outer bottom wall of the cylinder (303); one end of the second communicating pipe (307) is in through connection with the side wall of the first communicating pipe (306), the other end of the second communicating pipe (307) is in through connection with the side wall of the cylinder (303), the second communicating pipe (307) is used for communicating the first communicating pipe (306) with the cylinder (303), and when the cylinder (303) drives the second communicating pipe (307) to slide downwards below the limiting ring (304), the first communicating pipe (306) is communicated with the smoke exhaust pipe (2) through the cylinder (303); a plurality of layers of straight pipes (308) are arranged on the side wall of the first communicating pipe (306) in a penetrating manner, each layer of straight pipes (308) is uniformly distributed in the circumferential direction of the first communicating pipe (306), the length of each layer of straight pipes (308) is sequentially increased from bottom to top, and each layer of straight pipes (308) is provided with a ring-shaped pipe (309) in a penetrating manner; a plurality of air holes (310) are formed in the annular pipe (309), and smoke in the first communicating pipe (306) can be sprayed out through the air holes (310) through the matching among the air holes (310), the annular pipe (309), the straight pipe (308) and the first communicating pipe (306); the crushing blades (311) are arranged on the side wall of the first communicating pipe (306), the crushing blades (311) are positioned above the annular pipe (309), and the crushing blades (311) are positioned to crush bubbles blown out from the air holes (310); one end of the telescopic rod (312) is arranged on the bottom wall of the first communicating pipe (306), the other end of the telescopic rod (312) penetrates through the bottom wall of the first processing box (301) in a rotating mode to reach the outside of the first processing box (301) and is connected with an output shaft of a motor, and the motor is used for driving the first communicating pipe (306) to rotate; the second treatment box (302) is arranged on the right side wall of the first treatment box (301), the second treatment box (302) is communicated with the first treatment box (301) through a communication port, and an air outlet pipe (4) is arranged on the right side wall of the second treatment box (302) in a penetrating manner; the mounting plate (314) is arranged at the bottom of the second processing box (302), and a rotating shaft (315) is rotatably arranged on the mounting plate (314); one end of the rotating shaft (315) is provided with an impeller (313), the other end of the impeller (313) rotatably penetrates through the filter screen (318) and is provided with a cam (316), the position of the impeller (313) corresponds to the communication port, and the impeller (313) can drive the cam (316) to rotate under the blowing of smoke; the sleeve (317) is arranged on the inner wall of the second treatment box (302), two symmetrical grooves are formed in the upper side and the lower side of the sleeve (317), and filter screens (318) are arranged at the two ends of the sleeve (317); the upper end and the lower end of each of the two sliding plates (319) are respectively arranged in a groove of the sleeve (317) in a sliding manner, through holes for waste gas to flow are formed in the sliding plates (319), sliding grooves are formed in the sides, close to each other, of the two sliding plates (319), and racks (320) are arranged in the sliding grooves in a sliding manner; both sides of the rack (320) are connected with the side wall of the sliding groove through a second spring (323), and the two racks (320) are simultaneously meshed and driven with the same gear (321); gear (321) rotates and sets up on No. two processing case (302), and one side that two slide (319) kept away from each other is provided with a plurality of backup pad (322), has placed calcium oxide powder on backup pad (322), and calcium oxide powder is used for absorbing sulfur dioxide gas, cam (316) roll set up between two backup pad (322) and cam (316) roll connection, through mutually supporting between cam (316), backup pad (322), slide (319), No. two spring (323), rack (320) and gear (321) for cam (316) can drive backup pad (322) and rock from top to bottom when rotatory.
2. The efficient steelmaking process of a steel furnace as claimed in claim 1, wherein: and a dust treatment unit (5) is arranged on the smoke exhaust pipe (2), and the dust treatment unit (5) is used for removing dust in the waste gas and reducing the temperature of the waste gas.
3. The efficient steelmaking process of a steel furnace as claimed in claim 2, wherein: the dust processing unit (5) comprises a dust processing box (51), a W-shaped channel (52), a drain pipe (53), a dust collecting box (54), a spray header (55), a spray pipe (56), a water tank (57) and a water pump; the dust collection box (54) is arranged on the side wall of the first processing box (301), one end of a drain pipe (53) is arranged on the dust processing box (51) in a penetrating manner, and the other end of the drain pipe (53) is arranged at the bottom of the dust processing box (51); the dust treatment box (51) is arranged on the smoke exhaust pipe (2), a W-shaped channel (52) is arranged in the dust treatment box (51), two ends of the W-shaped channel (52) are respectively connected to the smoke exhaust pipe (2), a flow guide hole for pollution discharge is formed in the lower side of the W-shaped channel (52), and a spray header (55) is arranged on the upper side of the W-shaped channel (52); the spray header (55) is used for spraying water to the waste gas in the W-shaped channel (52), and the spray header (55) is connected with the water pump through a spray pipe (56); the water pump is arranged in the water tank (57) and is used for supplying water to the spray head; the water tank (57) is arranged at the top of the first treatment tank (301).
4. The efficient steelmaking process of a steel furnace as claimed in claim 1, wherein: an air outlet of the air outlet pipe (4) is provided with an air pump (41); the air suction pump (41) is arranged on the outer side wall of the second treatment box (302), and the air suction pump (41) is used for accelerating the flow of the smoke in the second treatment box (302).
5. The efficient steelmaking process of a steel furnace as claimed in claim 1, wherein: the diameter of the air holes (310) is 1-3mm, so that the volume of air bubbles blown out from the air holes (310) is reduced, and the contact area of the waste gas and the calcium hydroxide solution is increased.
6. The efficient steelmaking process of a steel furnace as claimed in claim 1, wherein: the oxygen conveying pipe on the oxygen charging machine (1) is wound on the smoke exhaust pipe (2) and used for absorbing heat on the smoke exhaust pipe (2) by the oxygen conveying pipe.
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| CN201910020388.4A CN109517936B (en) | 2019-01-09 | 2019-01-09 | Efficient steelmaking process of steel furnace |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH438391A (en) * | 1965-06-11 | 1967-06-30 | Four Electr Delemont Sa Du | Furnace for continuous heat treatment of metal parts |
| CN2449077Y (en) * | 2000-10-16 | 2001-09-19 | 尤明奎 | Burning aid desulfurizing apparatus |
| CN107746973A (en) * | 2017-11-14 | 2018-03-02 | 临沂鑫海新型材料有限公司 | Utilize desulfurizer in the dry kiln kiln of RKEF method smelting ferronickels |
-
2019
- 2019-01-09 CN CN201910020388.4A patent/CN109517936B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH438391A (en) * | 1965-06-11 | 1967-06-30 | Four Electr Delemont Sa Du | Furnace for continuous heat treatment of metal parts |
| CN2449077Y (en) * | 2000-10-16 | 2001-09-19 | 尤明奎 | Burning aid desulfurizing apparatus |
| CN107746973A (en) * | 2017-11-14 | 2018-03-02 | 临沂鑫海新型材料有限公司 | Utilize desulfurizer in the dry kiln kiln of RKEF method smelting ferronickels |
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