KR20020088691A - Device for control biased accumulated sinter in sintering cooler - Google Patents

Abstract

PURPOSE: An apparatus for controlling vertical segregation of sinter in a sintering cooler is provided which improves cooling efficiency by guiding vertical segregation of sinter after completing sintering. CONSTITUTION: The apparatus for controlling vertical segregation of sinter in a sintering cooler comprises a grain size separation unit part(110) having screening function that is installed at the lower part of an ore discharging part(140) in which first crusher(107) is installed so that sinter(180a,180b) is separated into large sinter(180a) and small sinter(180b); and a sinter discharging control unit part(190) that is installed at side and lower parts of the grain size separation unit part(110) and controls discharging direction and amount of sinter depending on the sinter piling state of a cooling transfer car(123), wherein the grain size separation unit part(110) comprises a conical distribution cone(151) installed underneath the first crusher(107) of the ore discharging part(140), a bamboo hat shaped grain size separation frame extended to the lower side from the distribution cone(151), a separation improving frame that has a shape corresponding to the grain size separation frame and is inserted into the grain size separation frame, and a separation improving film which has a certain thickness and is circumferentially adhered onto the separation improving frame, separation holes having a size of 130±30 mm for performing screening function are formed on the grain size separation frame, the sinter discharging control unit part(190) comprises a large sinter discharging chute(142), a small sinter discharging chute(141), separation films, discharging dampers(160,160'), a control part(200), and infrared ray level gauges(170,170'), and a triangular prism shaped segregation guiding tripods(143,143') are installed at lower parts of the small and large sinter discharging chutes that are divided by the separation films.

Description

Vertical segregation control device for sintered ore sintered cooler {DEVICE FOR CONTROL BIASED ACCUMULATED SINTER IN SINTERING COOLER}

The present invention relates to a sintered ore vertical segregation control device in a sinter cooler of steelworks, and more particularly, to a sintered ore vertical segregation control device of a sintered cooler which induces vertical segregation of the sintered ore after sintering is completed to improve cooling efficiency.

In general, the sintered ore manufacturing process, as shown in Figures 1 to 2c, in the raw material storage bin 100, the fixed iron ore of less than 8mm and the auxiliary materials such as limestone, silica sand, serpentine and the like and the fuel coke, anthracite, etc. Adjust the appropriate moisture (approximately 6-7%) in the primary mixer 101 by cutting it out at a ratio, and perform pseudo granulation (fine particles of 1 mm or less are attached around nuclear particles of 1 mm or more) and secondary mixer. In order to improve the strength of the pseudo raw granulated raw material at 102, after driving between raw materials, the belt hopper is stored in the surge hopper 103.

The blended raw materials thus stored are charged into the sintering machine 106 and the upper surface is ignited due to the combustion heat of air and COG (COKE OVEN GAS), and the exhaust gas pipe (25) is passed through the 25 wind phases 111 in the downward direction of the sintering machine 106. 112 is melted and reduced while sucking air to produce sintered ores 180a and b.

The sintered ore 180a, b is charged into the primary crusher 107 as a sintered body 130 and crushed to a size of 250 mm or less, sent to the cooler 108 and cooled to an appropriate temperature, and then the secondary crusher 109 as a ratio. ) Is crushed again to the proper particle size (5 ~ 50mm) and used in the later process.

However, although these processes are continuously repeated to manufacture the sintered ores 180a and b, as shown in FIG. 2C, the sintered compact 130 is driven after the primary shredding in the primary shredder 107. By loading directly into 108, a phenomenon occurs that is biased and loaded as a part of the cooler 108.

Thus, the cooling air introduced for cooling the sintered ore 180a, b is supplied through the cooling air duct 128 under the cooling bogie 123. As mentioned above, the sintered ore 180a, b is the unloading material of the sintered ore 180a, b. Due to the weak deflection, the cooling air passes through, while the other part is not cooled at all, and the continuous flow of the sintered ores 180a and b is simply induced as the chute 132, so no vertical segregation is made. Only part of 180a, b is being cooled.

That is, the flow of cooling air is formed at a portion lower than a portion having a high density between the sintered ore particles 180a and b. As a result, the sintered ores 180a and b loaded on the upper portion of the cooler 108 are discharged to the transport belt conveyor without being completely cooled, causing a fire hazard.

In order to solve this problem, a number of proposals such as Korean Patent Application Nos. 97-37598, 99-6701, and Japanese Patent Laid-Open No. 6-228665 have been published, but they are not effective in inducing complete cooling of sintered ore. I can't do it.

The present invention has been made to solve the above problems, by installing a particle size separating means on the lower side of the primary shredder in the light distribution unit and having a control means for varying the discharge and discharge direction according to the separated particle size sinter cooler It is an object of the present invention to provide a sintered ore vertical segregation control device of a sintered cooler which is charged to form a uniform packed layer in the sintered ore to improve cooling efficiency of the sintered ore.

The above object of the present invention includes a particle size separation device having a screen function installed at the lower end of the light distribution unit in which the primary crusher is installed so as to separate the sintered ore into allied sintered or small sintered ore; Sintered ore segregation control device of the sintered cooler, which is installed on the side and the lower portion of the particle size separator, and comprises a sintered light discharge control unit for controlling the discharge direction and the amount of discharge according to the sintered ore loading state of the cooling bogie. Is achieved by.

1 is a process chart showing a typical sintered ore manufacturing process,

2a to 2c is a plan view of a conventional sinter cooler, operation state diagram,

3 is a cross-sectional view showing an installation state of the device of the present invention;

Figure 4 is a detailed view showing the particle size separating device portion of the present invention device,

Figure 5 is a detailed view showing a sintered light emission control unit of the present invention.

Explanation of symbols on the main parts of the drawings

107: primary crusher 108: cooler

110: particle size separator unit 123: cooling cart

130: lump compaction 140: light distribution unit

141: small discharging chute 142: confrontational chute chute

151: dispersion cone 160,160 ': discharge damper

190: sintered light emission control unit

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

3 is a cross-sectional view of an installation state of the apparatus of the present invention.

Referring to FIG. 3, the apparatus of the present invention is installed on the lower side of the light distribution unit 140 so that the sintered ore 180a and b, which have largely passed through the primary crusher 107, can be separated into the small particles 180b and the opposing 180a. The particle size separator device 110 and each of the separated sintered ore particles (allele, small particles) 180a, b may be charged while forming a uniform packing layer in the cooler 108. Sintered light emission control unit 190 is provided on both sides and the bottom.

As shown in FIG. 4, the particle size separator 110 is installed below the light distribution unit 140 in which the primary crusher 107 is installed; The dispersion cone 151, the particle size separation frame 162, the separation enhancement frame 163, and the separation enhancement membrane 164.

The dispersion cone 151 has a conical shape, and is coupled to the upper portion of the particle size separator 162.

The particle size separation frame 162 is composed of a screen formed in the shape of a hat, the size of the separation hole 165 may be changed due to the characteristics of the operation 130 ± 30mm is suitable.

Like the particle size separation frame 162, the separation enhancement frame 163 is shaped like a hat shade, but is formed smaller than the particle size separation frame 162 to be coupled to the lower portion of the particle size separation frame 162. do.

In addition, the separation enhancement frame 163 is provided with a plurality of separation enhancement membranes 164 in a columnar shape and coupled to each other.

The material of the particle size separator unit 110 is preferably provided as a material that is not damaged or worn by friction and collision in proportion to the strength of the sintered ore (180a, b).

As shown in FIG. 5, the sintered light emission control unit 190 is installed at both lower ends of the light distribution unit 140 and at the lower end of the particle size separation unit 110; It consists of an allotment dispensing chute 142 and a small dispensing chute 141, a dispensing damper 160 and 160 ', a segregation induction tripod 143 and 143', an infrared level meter 170 and 170 'and a controller 200.

The allotment chute 142 is a polygonal material conveying tube connected to the four directions of the particle size separator device 110, the other part is located above the cooler 108.

And, the small discharge chute 141 is provided in the lower portion of the particle size separator device 110, the other part is located in the upper portion of the cooler 108, in the driving (forward) direction of the cooler 108 Rather than the allotment chute 142 is located in front.

The middle and lower portions of the allotment discharge chute 142 and the small delivery chute 141 are divided into a plurality of separation membranes 144 and 144 'inside the discharge chute 141 and 142, and the discharge dampers 160 and 160' are respectively formed in the divided parts. Is provided.

The end of the discharge chute 141, 142 is provided with a seismic induction tripod (143, 143 ') of the triangular prism shape, respectively, the end of the discharge chute (141, 142) is formed with a lower length and both sides are longer than the upper surface, Segregation induction tripods (143, 143 ') are provided at the upper portion of the lower surface, respectively.

That is, the upper portion where the segregation induction tripods 143 and 143 'are located is open.

Since the strength of the sintered ore (180a, b) is relatively hard as described above, the components of each part is preferably provided as a material that does not wear and break.

The infrared level meters 170 and 170 'are positioned at the upper portion of the cooler 108, but are positioned at predetermined intervals in front of the respective small and opposing discharge chutes in the traveling direction of the cooler 108.

In addition, the quantity of the infrared level gauges 170 and 170 'is preferably provided in proportion to the quantity of the discharge dampers 160 and 160'.

Referring to the operation and effects of the present invention configured as described above are as follows.

The sintered compacts 130 produced in the continuous sintering process are first broken by the primary crusher 107 with a particle size of 250 mm or less.

The sintered ore crushed 180a, b is dropped to the particle size separator 110.

The dropped sintered ore 180a, b is first dispersed in all directions by the dispersion cone 151 and passes through the particle size separation frame 162.

The sintered ore 180b having a smaller size than the hole of the particle size separating frame 162 falls to the bottom, that is, is directed to the small particle chute 141, and the sintered ore 180a having a size larger than the hole of the particle size separating frame 162. ) Are eventually gathered into the conflict dispensing suit 142.

However, since the sintered ore 180a, b dropped from the primary crusher 107 moves at a continuous and high speed, the particle size separation frame 162 may not play a role, and thus the efficiency of particle size separation may be reduced. As the two separation enhancement films 164, the flow rates of the sintered ores 180a and b are reduced and the separation of the small sintered ores 180b and the allergic ore 180a is induced.

The small and allied sintered ores 180b and 180a separated in this way are finally charged into the cooler 108 through the respective discharge chutes 141 and 142, but first, the sintered ore 180a and b is separated from the discharge chutes 141 and 142. (144, 144 ') is divided into a plurality of parts and accumulated and at the same time detect the bias of the opposing (180a) and small sintered light (180b) being charged to the cooler 108 by the level signal of the infrared level meter (170,170'). do.

The detected signal is sent to the controller 200, and the controller 200 adjusts the opening degree of each discharge damper 160, 160 'so that the level is high depending on whether the sintered light 180a, b in the cooler 108 is decentralized. Controls the opening degree of the corresponding discharge dampers 160 and 160 'in the cross direction, and the low level part controls the opening degree of the corresponding discharge dampers 160 and 160' in the open direction to sinter the ore 180a. when b is charged to the cooler 108, it is charged to a uniform level.

In addition, the sintered ore having a large particle size passes through the segregation induction tripods 143 and 143 'before the respective sintered ores 180a and b are charged into the cooler 108. The vertical segregation in the cooler 108 is perfectly achieved by falling farther in the direction opposite to) and sintered ore of smaller particle size falling closer.

Therefore, according to the present invention, when the sintered ore manufactured in the continuous sintering process is charged into the cooler, the vertical vertical segregation does not occur, thereby completely eliminating the cooling failure and maximizing the cooling efficiency of the sintered ore. It is effective in preventing the risk of fire.

Claims (5)

Particle size separator unit 110 having a screen function installed at the lower end of the light distribution unit 140 in which the primary crusher 107 is installed so as to separate the sintered ore (180a, b) into the sintered ore (180a) and small sintered ore (180b). Wow; It is installed on the side and the bottom of the particle size separator 110, characterized in that it comprises a sintered light emission control device 190 for controlling the discharge direction and the amount of discharge according to the sintered ore accumulation state of the cooling bogie 123 Vertical segregation control device for sintered ore of sinter cooler. According to claim 1, wherein the particle size separation unit 110 includes a cone-shaped dispersion cone 151 installed directly below the primary shredder 107 of the light distribution unit 140; A granular particle size separating frame 162 formed downward in the dispersion cone 151; A separation enhancement frame 163 having a shape corresponding to the particle size separation frame 162 and inserted therein; Sintered ore vertical segregation control device of the sintered cooler, characterized in that it comprises a separation enhancement film 164 attached to have a thickness along the peripheral direction of the separation enhancement frame (163). The sintered ore of the sintered cooler according to claim 2, wherein the particle size separation frame 162 is provided with a separation hole 165 for performing a screen function, and the separation hole 165 has a size of 130 ± 30 mm. Vertical segregation control. According to claim 1, wherein the sintered light emission control unit 190 is an opposing discharge chute 142 in communication with the light distribution unit 140 and formed on the side of the particle size separation unit 110; A particle discharging chute 141 connected to the lower part of the particle size separator 110; Separation membranes 144 and 144 'installed at the lower ends of the small and allele discharging chutes 141 and 142; Discharge dampers (160,160 ') installed to be openable and open to each part divided by the separation membrane (144,144'); A control unit 200 installed on the outer side of the opposing discharge chute 142 to control opening and closing the discharge dampers 160 and 160 '; Sintered ore vertical segregation control device of the sintered cooler, characterized in that it comprises an infrared level meter (170,170 ') installed on the cooling bogie (123) and electrically connected to the control unit (200). [5] The vertical segregation control apparatus for sintered ore of the sintered cooler according to claim 4, wherein a seismic induction tripod (143, 143 ') having a triangular prism shape is installed at each lower end separated by the separation membranes (144, 144').