KR20190023928A - Apparatus for measuring permeability and Sintering apparatus - Google Patents

Abstract

The present invention relates to an apparatus for measuring permeability, including: a hollow pipe which is spaced apart from and installed on an upper portion of an object to be processed and is extended toward the upper portion of the object to be processed, and in which at least a part thereof is elastically formed in a vertical direction and in a progress direction of the object to be processed; a flow velocity sensor mounted on the hollow pipe; and a support which is spaced apart from and installed on the object to be processed and on which the hollow pipe is mounted and supported, and also relates to sintering equipment having same, wherein provided are an apparatus for measuring permeability, which is capable of periodically precisely measuring permeability of the moving objet to be processed at a fixed position, and sintering equipment, which is capable of periodically precisely measuring permeability of a raw material layer at the fixed position.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring permeability and a sintering apparatus,

The present invention relates to a breathability measuring apparatus and a sintering apparatus, and more particularly, to a breathability measuring apparatus capable of precisely measuring the breathability of a moving object in a fixed position and a sintering apparatus having the same.

The sintered ore is a blast furnace made of iron ore, limestone, coke, and anthracite as raw materials and manufactured in a size suitable for blast furnace use. The sintered ores are produced by a process of preparing a raw material mixture and a process of sintering the raw material mixture by sintering. Among them, the process of producing the blending raw materials as the sintered ores is usually carried out in a dewatering sintering machine.

The Dwight Lloyd type sintering machine is a method in which a raw material layer is formed by charging a raw material mixture into a sintered bogie while advancing the sintering bogie in the order of a charging section, an ignition section, a sintering section and a cooling section, forming a combustion zone on the raw material layer, Air is forcedly sucked downward to move the combustion zone from the upper part of the raw material layer to the lower part, the raw material layer is sintered to form a sintered cake, and the sintered cake is lighted and cooled and crushed to produce sintered ores.

At this time, the air permeability of the raw material layer is a main factor determining the productivity and quality of the sintered ores. The air permeability of the raw material layer must be uniform in the width direction while being maintained within a desired value range so that the combustion to moving speed is uniform in the width direction of the raw material layer and the sintering reaction progresses smoothly in the entire width direction of the raw material layer, Can be obtained. Therefore, when producing the sintered ores, it is necessary to measure the air permeability of the raw material layer and to control various process conditions such as the raw material charging method so that the air permeability is uniform in the width direction.

Conventionally, a method of indirectly estimating the air permeability of the raw material layer after estimating the position of the combustion zone by using a temperature sensor provided under the sintering vehicle, or a method of vertically installing a hollow pipe on the upper side of the traveling path of the sintering vehicle, A method in which the gas flow rate in the pipe is measured after directly contacting the upper surface of the layer and a method of directly calculating the air permeability of the raw material layer is utilized for measuring the air permeability of the raw material layer.

Among them, the breathable indirect estimation method using the temperature sensor has a large error in the estimation value, and it is difficult to precisely control the air permeability of the raw material layer in the width direction thereof. In the direct air permeability calculation method using pipes, It is also difficult to precisely control the permeability of the raw material layer in the width direction with the measured value as the pipe wears at the contact surface and the gas leaks to affect the measured permeability. Therefore, conventionally, it has been difficult to accurately measure the breathability of the raw material layer in real time. Techniques that serve as the background of the present invention are disclosed in the following patent documents.

KR 10-2013-0090264 A

The present invention provides an air permeability measuring device capable of precisely measuring the permeability of a moving object in a fixed position.

The present invention provides a sintering facility capable of precisely measuring the air permeability of a raw material layer at a fixed position.

The air permeability measuring apparatus according to the embodiment of the present invention comprises: a hollow tube which is disposed apart from an upper surface of a treated material and extends toward an upper surface of the treated material; A flow velocity sensor mounted on the hollow tube; And at least a part of the hollow tube is formed so as to be stretchable in a direction in which the processed material is fed and in a direction facing the processed material, do.

And an operation part connected to at least a part of the hollow tube to adjust the expansion and contraction. The hollow tube may have an upper portion secured to the support and a lower portion periodically or selectively expanded and contracted and may contact and be spaced from the upper surface of the workpiece.

The actuating part extends toward the upper surface of the object to be processed, and the upper part and the lower part of the hollow tube are connected to each other. The operating portion is rotatably mounted on the upper and lower portions of the hollow tube, and the length can be adjusted in the extended direction. The operation portion may be formed to be capable of free rotation and load rotation with respect to the upper portion of the hollow tube, and may be formed to allow free extension and power shrinkage in the extended direction.

The hollow tube comprising: a cylinder extending toward the treated object and to which the flow rate sensor is mounted; And an expansion pipe mounted on a lower portion of the cylindrical body and capable of contacting the upper surface of the processed product. The hollow tube includes a ring-shaped weight attached to a lower portion of the extension pipe; And a ring-shaped pad mounted on the weight.

The operation unit may include: rotation means mounted on an upper portion of the hollow tube; A rotating shaft mounted on a lower portion of the hollow tube; And a guide extending toward an upper portion of the processed object and capable of adjusting the length in an elongated direction, wherein an upper portion is mounted to the rotating means and a lower portion is mounted to the rotating shaft.

The rotation means may include a motor capable of free rotation and load rotation, and the guide may include any one of an actuator, a linear motor, and an LM guide configured to allow free extension and power shrinkage.

A sintering equipment according to an embodiment of the present invention includes a sintering vehicle which is installed so as to be able to travel in a traveling direction of a car and into which a raw material is charged; And an air permeability measurement device which is installed on the sintered bogie so as to be spaced apart from the upper side of the sintered bogie toward the raw material layer charged in the sintered bogie and at least part of which is formed so as to be able to contact with the upper surface of the raw material layer, do.

Wherein the air permeability measurement apparatus is provided with a hollow tube spaced apart from an upper surface of the raw material layer and at least a lower portion being formed so as to be able to expand and contract in a traveling direction and a vertical direction; A flow velocity sensor mounted on the upper portion of the hollow tube; A support spaced from the raw material layer and fixing the upper portion of the hollow tube; And an actuating part mounted to connect the upper part and the lower part of the hollow tube and adjusting the expansion and contraction of the hollow tube.

Wherein the hollow tube includes: a cylinder extending toward the raw material layer, the cylinder being mounted on the flow sensor and fixed to the support; An extension pipe mounted on a lower portion of the cylinder and periodically or selectively expanded and contracted by the operation portion; A ring-shaped weight attached to the lower portion of the extension pipe; And a ring-shaped pad mounted on the lower part of the weight and capable of contacting and separating from the upper surface of the processed object.

The operation unit includes: rotation means mounted on an upper portion of the hollow tube and configured to be capable of free rotation and load rotation; A rotating shaft mounted on a lower portion of the hollow tube; And a guide extending toward the upper portion of the processed product and capable of free stretching and power shrinkage in an extended direction, an upper portion mounted to the rotating means, and a lower portion mounted to the rotating shaft.

According to the embodiment of the present invention, it is possible to obtain, for example, a partial-movement type air permeability measuring device capable of precisely measuring the air permeability of a moving object being processed at a fixed position. Therefore, a series of processes of precisely measuring the air permeability of the raw material layer and returning it while cyclically moving the part of the air permeability measuring device after bringing the air permeability measuring device into close contact with the upper surface of the raw material layer being transported in the traveling direction of the vehicle It can be repeated. That is, the air permeability measuring device is provided at a fixed position, and the air permeability of the raw material layer being conveyed can be periodically and precisely measured.

Therefore, while sintering the raw material layer using the sintering equipment, the air permeability of the raw material layer is precisely measured while a part of the air permeability measuring device is closely contacted with the raw material layer periodically, and the variation in the widthwise direction The widthwise loading pattern of the raw material for uniform flame propagation can be designed based on this calculation.

Therefore, according to the charging pattern reflecting the result of the real-time air permeability measurement of the raw material layer, the raw material can be charged in the widthwise direction of the raw material hopper and the raw material can be loaded in the sintering caravan in the width direction and segregated in the width direction. A uniform flame propagation can be achieved in the entire region in the width direction of the raw material layer.

From this, the sintering reaction in the raw material layer is smooth, so that sintering is delayed or the raw material layers can be uniformly sintered without sintering. Therefore, the production amount of the sintered ores is maximized and the intensity deviation of the sintered ores is reduced, thereby achieving economic benefits.

1 is a schematic view of a sintering plant having an air permeability measuring device according to an embodiment of the present invention.
FIG. 2 and FIG. 3 are operation diagrams respectively showing a return state and a breathability measurement state of the breathability measurement apparatus according to the embodiment of the present invention.
4 is a schematic view of an air permeability measuring apparatus according to an embodiment of the present invention.
5 is an operation diagram illustrating the operation of the breathability measurement apparatus according to the embodiment of the present invention in detail.
6 is a partial schematic view of a sintering plant according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various forms. It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS The drawings may be exaggerated for purposes of describing embodiments of the present invention, wherein like reference numerals refer to like elements throughout.

The present invention relates to a breathability measuring device which is installed at a fixed position and which can measure repeatedly or periodically and precisely the breathability of a moving object while moving at least partly with the object to be treated, To a sintering apparatus capable of periodically and precisely measuring the sintering temperature. The embodiment of the present invention will be described in detail with reference to the sintered light production process of a steel mill.

1 is a schematic view of a sintering plant having an air permeability measuring device according to an embodiment of the present invention. FIG. 2 is an operation diagram showing a return state of the breathability measurement apparatus according to an embodiment of the present invention, and FIG. 3 is an operation diagram illustrating a breathability measurement state of the breathability measurement apparatus according to an embodiment of the present invention.

4 is a schematic view of an air permeability measuring apparatus according to an embodiment of the present invention, wherein FIG. 4 (a) is a schematic view showing a hollow tube of the air permeability measuring apparatus cut vertically, and FIG. 4 (b) Fig. 3 is an enlarged schematic view showing an operating portion of the apparatus. Fig.

5 is an operation diagram illustrating the operation of the breathability measurement apparatus according to the embodiment of the present invention in detail. 5 (b) and 5 (c) show a free extension of the hollow tube for measuring the permeability of the treated product and a free extension of the hollow tube for measuring the permeability of the treated product. Fig. 5 5 (d) and 5 (e) are schematic views of the process of power shrinkage and load rotation of the hollow tube for returning to the predetermined contact area.

FIG. 6 is a schematic view of a furnace of a sintering equipment according to an embodiment of the present invention.

1 to 5, an air permeability measuring apparatus according to an embodiment of the present invention will be described. The air permeability measuring apparatus 700 according to the embodiment of the present invention is disposed so as to be spaced apart from the upper surface of the processed product and extends toward the upper surface of the treated product and at least a part of the air permeable measuring device 700 can be stretched in a direction An operating portion 730 connected to at least a part of the hollow tube 710 to adjust the elongation and contraction of the hollow tube 710, And a support 740 on which the hollow tube 710 is mounted and supported.

The treated material may include a raw material layer that is charged in the sintering bogie 60 of the sintering equipment according to the embodiment of the present invention and moves in the traveling direction of the car, for example, in the longitudinal direction X. Of course, the treatments may be varied and are not particularly limited in the examples. For example, the treatments may include various treatments satisfying that they are carried in a predetermined direction along various paths.

Hereinafter, each component of the air permeability measurement apparatus 700 will be described, and terms before that are defined as follows.

The extension is defined as the length of the component extending in the extension direction or the desired direction of the component, and the shrinkage is defined as the length of the component decreases in the extension direction or the desired direction of the component. At this time, the free extension means that the component freely expands in the direction of its own weight, load or external force due to self weight, load or external force. The free rotation means that the component is free to rotate in a direction tangential to the direction in which the component is rotated about a predetermined axis and its own weight, load, or external force is applied by its own weight, load or external force. Further, the power shrinkage means that the component moves or shrinks in the direction opposite to the direction in which the self weight, load, or external force is applied by the power. In addition, load rotation refers to applying a rotational load in the opposite direction to the rotational direction of the component using power when the component makes free rotation about the predetermined axis as the rotational center. That is, free extension and free rotation are motions without power, and power shrinkage and load rotation are motions using power.

The hollow tube 710 may be installed to be spaced upward from the upper surface of the treatment object and extend in the height direction Z, for example, up and down toward the upper surface of the treatment object. Here, the height direction Z may be a direction intersecting the upper surface of the treated product, and the upper surface of the treated product may be the surface of the treated product. The hollow tube 710 is fixed to the support 740 at its upper portion and the lower portion can be periodically or selectively or repeatedly expanded and contracted by the actuating portion 730 and contacted with and spaced from the upper surface of the treatment object.

The hollow tube 710 includes a tube body 711 that extends in the height direction Z toward the processed object and on which the flow rate sensor 720 is mounted and a cylindrical tube 711 that is attached to the lower portion of the tube body 711, A ring-shaped weight 713 mounted on the lower portion of the pipe 712, the extension pipe 712, and a ring-shaped pad 714 mounted on the weight 713. That is, the hollow tube 710 may be a composite tube structure such that different tubular members are connected in the extending direction.

The cylinder 711 is spaced from the upper surface of the treated material at a height higher than the upper surface of the treated material, and can face the upper surface of the treated material vertically. One side of the outer peripheral surface of the cylindrical body 711 is mounted and fixed to the support body 730, and movement can be restricted. The tubular body 711 is referred to as the upper portion of the hollow tube 711. And the upper portion of the operation portion 730 is mounted on the other side of the outer circumferential surface of the cylindrical body 711.

The cylinder 711 is formed with an opening (lower end opening) through the lower portion thereof. The lower end opening of the tubular body 711 is spaced apart from the upper surface of the processed product by a predetermined height. As the upper end of the processed product is spaced apart from the upper surface of the processed product by a height of several centimeters to several tens of centimeters, . The extension pipe 712 can be mounted and communicated with the lower end opening of the cylindrical body 711.

The upper end of the tubular body 711 is formed at a predetermined height higher than the lower end opening. The upper end of the tubular body 711 has a height of several tens of centimeters to several hundreds of centimeters As it is formed, the interference of the airflow due to the movement of the treated material can be suppressed or prevented. A passage connecting the upper end opening and the lower end opening of the cylinder 711 is formed in the inside of the cylinder 177 in the height direction Z and the flow rate sensor 720 measures the flow velocity of the gas passing through the passage, can do.

When the passage of the tubular body 711 is indirectly brought into contact with the upper surface of the treated product through the extension pipe 712, a flow of gas descending toward the treated product from the inside of the passage is formed by the suction force applied downward into the treated product do. The gas passes through the passage to reach the upper surface of the treated material, and then sucked into the treated material. At this time, the flow rate sensor 720 can measure the flow rate of the gas.

The extension pipe 712 extends in the height direction Z and is mounted to the lower portion of the cylindrical body 711 and is movable in the direction in which the processing material is conveyed, for example, in the longitudinal direction X and in the direction toward the processing object, It can be stretched and formed. Therefore, it can be indirectly contacted with and spaced from the upper surface of the processed product through the weight 713 and the pad 714.

The extension pipe 712 is mounted on the lower portion of the cylinder 711 and the upper portion communicates with the passage of the cylinder 711 and the lower portion can be disposed toward the upper side of the processing object. A weight 713 is attached to the lower portion of the extension and contraction tube 712 so that the weight 713 can communicate with each other. The expansion and contraction pipe 712 may include any one of a corrugated pipe, a flexible tube, and a tubular diaphragm so as to extend and contract in the height direction Z and the longitudinal direction X, and to adjust the length. Of course, in addition to the corrugated pipe, the flexible tube, and the tubular diaphragm, a pipe having various constructions that can be expanded and contracted can be used as the expansion pipe 712.

On the other hand, a thin film of an elastic material may be provided on the inner circumferential surface of the expansion and contraction tube 712 in the form of a liner. Mentioned thin film of elastic material is always provided on the inner circumferential surface of the expansion pipe 712 so as to be tensioned and tensioned so that the smooth flow of the gas passing through the expansion pipe 712 smoothly flows inside the expansion pipe 712 .

The maximum length of the extension pipe 712 can be determined by reflecting the moving distance of the contact area on the upper surface of the processing object and the distance between the processing object and the cylinder 711. The minimum length of the expansion pipe 712 May be shorter than the spacing height between the tubular bodies (711).

The extension pipe 712 is freely stretched in the height direction Z in the direction in which the hollow pipe 710 extends by the operation portion 730 and the weight 713 and the pad 714 are lowered, Can be brought into contact with the upper surface of the treated material. The extension pipe 712 is freely stretched in the process water traveling direction by the operation portion 730 and moves the pad 714 in the process water traveling direction as the process water to make contact between the pad 714 and the upper surface of the processed product And the same contact area on the upper surface of the treated object can be continuously and indirectly contact-connected to the passage of the cylinder 711 for a predetermined time.

The weight 713 is formed in a ring shape and the inside can be opened in the height direction Z. [ The weight 713 may be mounted on the lower portion of the extension pipe 712 and the upper portion of the pad 714 may be mounted on the lower portion. Thus, the weight 713 can connect between the pad 714 and the extension pipe 712. The weight 713 can communicate with the inside of the extension pipe 712 and the pad 714. The weight weight 713 pulls the lower portion of the expansion pipe 712 in the vertical direction during the free extension of the expansion pipe 712 and applies a load to smoothly guide the extension pipe 712 to the extension.

As a result, the pad 714 can be pressed and stably stuck on the upper surface of the processed article. The weight 713 is extended to a predetermined height, and the lower portion of the actuating portion 730 can be mounted on the outer circumferential surface thereof.

The pad 714 is formed in a ring shape and its interior is opened in the height direction Z and is detachably mounted on the lower portion of the weight 713 to communicate with the inside of the weight 713. The pad 714 is in direct contact with the upper surface of the article to be treated upon descending of the weight 713 and forms a cylindrical space between the article to be treated and the weight 713, It can be sealed. The tubular body 711, the extension pipe 712 and the weight 713 are connected to the upper surface of the processed product through the pad 714 and can indirectly communicate with the upper surface of the processed product via the pad 714.

The pad 714 seals the side of the cylindrical space formed between the weights 713 and the upper surface of the processed material while directly contacting the upper surface of the processed material and prevents or prevents the formation of a gap between the pad 714 and the upper surface of the processed material. Or the like.

That is, since the pad 714 must be in direct contact with the processed material, it must be stably usable in a high-temperature atmosphere and be able to adhere smoothly to the rough surface of the processed material. Accordingly, the pad 714 may include an elastic material having excellent durability, heat resistance, chemical resistance, and impact resistance, so that when the pad 714 contacts the upper surface of the object to be processed, a gap Thereby preventing or preventing the outflow of the gas.

For example, the pad 714 may comprise a rubber composition that is stretchable and heat resistant, or may comprise metal, alloy, and urethane materials. At this time, if the pad 714 is a rubber composition, it may be various rubber compositions having an appropriate numerical value of hardness, strength, elongation and modulus, and its physical properties are not particularly limited. The air permeability measuring apparatus 700 can improve airtightness and accuracy of measurement by the pad 714 and mitigate and alleviate the impact caused by contact with the object to be processed. On the other hand, when the pad 714 is worn, only the pad 714 can be replaced, so that maintenance and repair of the air permeability measuring apparatus 700 can be smooth and economical.

The assembly of the expansion and contraction tube 712, the weight 713 and the pad 714 is referred to as the lower portion of the hollow tube 710. The extension pipe 712, the weights 713 and the pads 714 are vertically coupled to each other so that the inner diameters of the pipes can be the same within the tolerance range so as to form the lower portion of the hollow pipe 710, The inner circumferential surfaces can be smoothly connected up and down. The extension pipe 712, the weight 713, and the pad 714 communicate with each other in the vertical direction and communicate with the passage of the cylinder 711. The assembly can be repeatedly or selectively connected between the tubular body 711 and the upper part of the treated object while the hollow tube 710 is stretched or contracted and the hollow tube 710 is connected to the upper surface of the processed object for a predetermined time, .

That is, the ring-shaped weight 713 and the ring-shaped pad 714 are kept in contact with the processed material for a predetermined time by the extension and contraction tube 712, The contact area with water can be maintained. Accordingly, the flow path of the gas flowing into the contact area on the upper surface of the treated product flows through the passage of the tubular body 711 for a predetermined time corresponding to the flow rate sensor 720 and the flow rate sensor 720 can be connected to the upper surface of the treated product for a predetermined time. Can be measured. It is possible to periodically and accurately measure the permeability of the treated material from the measured value of the flow rate sensor 720. [

The flow rate sensor 720 can be mounted on the cylinder 711 of the hollow tube 710 to measure the flow rate of the gas flowing through the passage of the cylinder 711. The flow rate sensor 720 can communicate with the inside of the cylinder 711 through one side of the cylinder 711. The kind of the flow rate sensor 720 may vary, and it is not necessary to limit the flow rate sensor 720 in the embodiment. The flow rate sensor 720 can precisely measure the permeability of the processed product at fixed positions at predetermined intervals at which the hollow tube 710 periodically contacts the upper surface of the processed product.

The actuating portion 730 may be connected to at least a portion of the hollow tube 710, for example the lower portion thereof, to control the expansion and contraction thereof. The operation portion 730 extends toward the upper surface of the processed object and can be mounted by connecting the upper portion and the lower portion of the hollow tube 710. [ At this time, the actuating part 730 may be rotatably mounted on the upper and lower parts of the hollow tube 710, and the length may be adjustable in the extended direction. The operation unit 730 may be formed to be capable of free rotation and load rotation with respect to the upper portion of the hollow tube 710, and may be configured to allow free extension and power shrinkage in the extended direction.

The operating portion 730 includes a rotating means 731 mounted on the cylinder 711, a rotating shaft 733 mounted on the weight 713, and a length extending toward the top of the processed object, And a guide 732 having an upper portion mounted to the rotating means 731 and a lower portion mounted to the rotating shaft 733. [

The rotating means 731 may include a motor capable of free rotation and load rotation and may be mounted on the outer circumferential surface of the cylinder 711 in the width direction Y. [ The rotating shaft 733 is mounted in the width direction Y on the outer peripheral surface of the weight 713 under the rotating means 731 and rotatably mounted.

The guide 732 may include a guide block 732a and a guide bar 732b. The guide block 732a is mounted on the output end 731a of the rotating means 731 and the guide bar 732b is mounted on the guide block 732a through the upper and lower portions and the upper portion is supported on the guide block 732a, And the lower portion can be mounted through the rotating shaft 733. [

The guide block 732a can be formed so that the guide bar 732b can be moved back and forth with respect to the processing object. In addition, the guide bar 732b can be formed to be movable by the guide block 732a.

For example, a guide block 732a is provided with a servo motor (not shown) therein, a roller (not shown) or gear (not shown) is provided at the output end of the servo motor, And a roller or a gear is connected to the rail or the gear so that a power transmission system is formed in the guide 732. The guide block 732a is driven by a power transmission system, The guide bar 732b can be moved back and forth.

One point located upstream on the basis of the traveling direction of the vehicle among the two side points spaced apart in the longitudinal direction X with the hollow tube 710 therebetween is referred to as an air permeability measurement starting point and a point located on the relatively downstream side If the other point is the air permeability measurement end point, the air permeability measurement starting point means a moment when a predetermined region on the upper surface of the object to be inspected for permeability passes the air permeability measurement starting point, and the air permeability measurement end point is the upper surface Refers to a moment when a predetermined region on the surface of the object passes the end point of the air permeability measurement and the start point of the next air permeability measurement means a moment when a predetermined region on the upper surface of the object to be processed for measurement of the next air permeability passes the air permeability measurement starting point.

In this way, during the transfer of the treated material, the starting point and the ending point of the air permeability measurement can be alternately determined, and predetermined regions on the upper surface of the object to be treated for air permeability specification on the upstream side of the hollow tube 710 are arranged in the traveling direction Predetermined regions on the upper surface of the treated product on which the air permeability is measured on the downstream side of the hollow pipe 710 may be arranged apart from each other in the traveling direction.

The servomotor is allowed to freely rotate the output stage in the off state from the start of the air permeability measurement to the end of the air permeability measurement so that the guide bar 732b can be freely dropped and the rotating means 731 is also turned off, The rotation can be made freely. Thus, the guide 732 can freely expand and can freely rotate.

From the end of the air permeability measurement to the start of the next air permeability measurement, the servo motor can be rotated in a predetermined direction in the ON state, and the guide bar 732b can be moved backward with respect to the processing object. At this time, the rotating means 731 is turned on and a rotating load can be applied to the output terminal 731a. As a result, the guide 732 contracts and can undergo load rotation.

Therefore, the guide 732 extends freely from the starting point to the ending point of the air permeability measurement and freely rotates so that the shrink tube 712 is extended in the height direction Z and the lower part of the shrink tube 712 is extended can do.

At this time, the force for extending the shrinking tube 712 in the height direction Z may be the load of the weight 713, and the force for extending the lower portion of the shrinking tube 712 in the traveling direction of the bulb 713 may be the weight 713, The friction force between the lower surface of the pad 714 and the upper surface of the processed article due to the load of the pad 714. [

Further, the guide 732 is subjected to power shrinkage and load rotation from the end of the air permeability measurement to the start of the next air permeability measurement so that the contraction pipe 712 contracts in the height direction Z, It is possible to return to the opposite direction of the traveling direction.

At this time, the force for shrinking the shrinking tube 712 in the height direction Z may be the output of the servo motor built in the guide block 732a, and the lower portion of the shrinking tube 712 may be returned May be a moment which is caught by the weight of the weight 713 and caught on the lower side of the retraction pipe 712.

The guide bar 732b can be advanced within the extension range of the extension pipe 712. [ To this end, the guide bar 732b may be formed so that a stopper (not shown) may protrude from the guide bar 732b to cross the guide bar 732b.

The guide 732 may include any one of various actuators, a linear motor, and an LM guide that are configured to allow free extension and power shrinkage.

The operation unit 730 may further include an operation control unit (not shown). The operation control unit senses the movement of the processing object by using a predetermined sensor and controls the elasticity of the hollow tube 710 by supplying and cutting off power to the rotating means 731 and the guide 732 at a desired time point, . At this time, the operation stop means that the movement of the rotation means 731 and the guide 732 does not stop, but moves to the non-moving state, and the rotation means 731 and the guide 732 can not move have. In addition, the operation control unit senses contact between the pad 714 and the upper surface of the processed article using a contact sensor such as a pressure sensor (not shown) or a limit switch (not shown) provided at a predetermined position of the pad 714, The operation of the flow rate sensor 720 can be controlled using the result.

In addition to the above-described structure, the actuating part 730 may be provided with various mechanical elements combined with various mechanisms in order to smoothly control the movement of the expansion and contraction tube 712.

The hollow tube 710, the flow rate sensor 720 and the actuating part 730 are respectively provided at a plurality of positions spaced apart in the width direction Y and a support body 740 may be provided to support the hollow tube 710,

The support 740 may be spaced above the workpiece and disposed in a direction transverse to the workpiece, e.g., in the width direction Y. [ The support 740 may include a horizontal bar and a protruding bar. The horizontal bar is installed in the width direction Y on the upper side of the processed product, and the protruding bar can be mounted by connecting the horizontal bar 711 with the horizontal bar. Accordingly, the hollow tube 710 can be mounted on the support 740 and supported.

The structure of the support body 740 need not be particularly limited in the embodiment, and may have various structures satisfying that the cylinder body 711 can be supported.

The air permeability measurement apparatus 700 according to the embodiment of the present invention may further include a calculation unit (not shown). The calculator can calculate the air permeability of the treated product by receiving the flow velocity value from the flow velocity sensor 720. [ The breathability value is expressed as a non-dimensional value, jpu (JPU). Here, JPU is the abbreviation of Japanese Permeability Unit. A method of calculating the air permeability at the flow rate value in the gas passage will be briefly exemplified below.

For example, a value obtained by dividing a thickness value [mm] in the height direction Z of the processed product by the denominator and dividing the suction pressure, for example, the negative pressure value [mmAq], applied to the treated product downward is obtained, . This value is referred to as a first value. Further, the flow rate value [m ³ / min] of the gas obtained by multiplying the flow rate value by the sectional area value of the passage is obtained to obtain a value obtained by dividing the surface area, such as the firing area [m ² ] This value is called the second value. Thereafter, the breathability value [JPU] can be obtained by multiplying the first value by the second value.

The above content is represented by the following expression (first formula).

...제1 식

... Formula 1

F is the air flow rate [m ³ / min], A is the cross sectional area of the bed [m ² ], L is the height of the bed [mm] and ΔP is the sump pressure across the bed (mmAq).

In this case, the thickness of the treated material, the negative pressure applied to the treated material, the cross-sectional area and the sintered area are values obtained from the sintering equipment and the sintered light production process, and the flow velocity value is a value periodically measured in the air permeability measuring device 700. That is, in the embodiment of the present invention, the air permeability value can be periodically measured. Of course, in addition to this approach, the permeability of the treated material can be determined from the flow rate values measured at the flow sensor 720 in a variety of ways.

1 to 6, a sintering equipment according to an embodiment of the present invention will be described. The sintering equipment according to the embodiment of the present invention is provided so as to be able to run in the traveling direction of the truck and includes a sintered bogie 60 into which the raw material M is charged and a sintered bogie 60 And an air permeability measurement device 700 (hereinafter, referred to as " air permeability measurement device ") 700, which is provided at a position spaced apart from the upper side of the vehicle width direction in the transverse direction Y and which is at least partially formed so as to be able to contact with the upper surface of the raw material layer, ).

Here, the upper side of the sintered bogie 60 refers to the upper side with reference to the surface of the raw material layer loaded in the sintered bogie 60. The sintering apparatus according to the embodiment of the present invention includes a hopper 10, a feeder 20, a gate 30, a chute 40, an ignition path 50, a widthwise charging controller 800, 900).

The raw material (M) may include a raw material for producing sintered ores. The raw materials for mixing are prepared by mixing the raw materials for iron and steel, the binder and the additives, and humidifying and assembling them. Crude steel raw materials include minute iron ore and fine iron ore, binders include minute cokes and anthracite, and additives include limestone or quick lime.

The raw material M is stored in the hopper 10 and can be opposed to the sintered bogie 60 running on the conveying path on the upper side of the conveyance path to be described later. As shown in FIG. The hopper 10 is rotatably provided with a feeder 20 at a lower portion thereof. A chute 40 is provided at an underside of the feeder 20 and a gate 30 is provided between the feeder 20 and the hopper 10. The feeder 20 and the chute 40 guide the dropping of the raw material M between the hopper 10 and the sintering bogie 60.

When the particle size segregation of the raw material layer is uniform in the width direction Y, the air permeability is unevenly formed in the width direction Y, and the propagation speed of the flame is different in the width direction Y of the raw material layer, The sintering is insufficient. It is preferable that the flame is uniformly propagated in the width direction (Y) of the raw material layer in order to improve the quality and productivity of the sintered ores.

Therefore, when the raw material M is charged into the sintering bogie 60, it is preferable that the grain size distribution in the width direction (Y) be charged differently. For example, a raw material having a relatively large particle size is loaded in the center section c of the plurality of sections in the width direction Y and a small particle size is loaded in the width direction Y so that a raw material having a relatively small particle size is loaded in the both- It is good to control segregation.

At this time, grain size segregation in the width direction (Y) of the raw material layer can be controlled by using the width direction charging controller 800 and the loading machine 900. This control method will be described when the widthwise charging controller 800 and the loading device 900 are described.

The ignition furnace 50 is spaced in one direction from the hopper 10 on the upper side of the sintered bogie 60 and a flame is sprayed on the raw material layer to ignite the flame on the surface of the raw material layer. The flame is ignited by the solid fuel contained in the raw material layer to form a combustion zone. The combustion zone can be moved from the upper part to the lower part of the raw material layer and the raw material layer can be sintered.

A plurality of wind boxes (not shown) may be provided at the lower part of the conveyance path and may be continuously arranged in one direction. The wind box can communicate with the interior of the sintering bogie 60 and can form a negative pressure to suck down the inside of the sinter bogie 60.

The wind box is installed on the lower side of the sintered bogie 60 by wrapping the lower part of the sintered bogie 60. The wind box can be arranged in a plurality of directions in the traveling direction of the bogie, for example, the longitudinal direction X. The wind box is communicated with the interior of the sintered bogie 60 through a bottom surface of the sintered bogie 60. A negative pressure is formed inside the saddle bogie 60 by an exhaust part Can be sucked downward. The raw material can be sintered while the combustion zone moves from the surface of the raw material layer through the upper portion to the lower portion by suction.

The sintering bogie 60 can be installed so as to process the raw material M while traveling in the longitudinal direction X of the conveyance path. A plurality of sintering carts 60 are provided and may be arranged in the longitudinal direction X and coupled to each other. The sintered bogie 60 can be loaded with the raw material M therein and can process the raw material M loaded in the saddle trailer 60 while traveling on the transport path. At this time, the longitudinal direction X may be the traveling direction of the bogie.

The inner space of the sintering bogie 60 is opened to the upper side, and the material M is dropped into the inner space to form a raw material layer. The sintering bogie 60 is provided in a structure in which the bottom can be ventilated, and the bottom can be provided by, for example, a grating bar of a grid structure. The inner space of the bogie 60 can communicate with the wind box and the inside of the bogie 60 can be sucked downward by the great bar of the lattice structure. The raw material layer can be sintered and cooled as it passes through the transport path.

A plurality of sintering trucks 60 are coupled in an endless manner to form a conveying path while traveling on the upper side of a conveyor (not shown) installed in the longitudinal direction X. The conveying path is formed by forming a conveying path while traveling on the lower side of the conveyor can do. The bogie 60 travels in one direction to heat the raw material layer, for example, sintering the raw material layer. The bogie 60 is rotated at a point where the conveyance path ends (a turning point) Travels along the return path, and can be returned to the return path at the point at which the return path ends.

The transport path includes a plurality of sections. The plurality of sections include a charging section, an ignition section connected to the charging section, and a sintering section connected to the ignition section on the opposite side of the charging section. The charging section, the ignition section, and the sintering section in the order of the traveling direction of the bogie. A light distribution chute (not shown) may be installed at a position where the conveyance path ends. The hopper 10 is placed in the loading section to load the raw material in the sintering bogie 60. An ignition furnace (50) is disposed in the ignition section to ignite the material layer loaded on the sintered bogie (60). The sintering zone is a zone in which the combustion zone formed on the surface of the raw material layer stacked on the sintered bogie 60 is moved to the lower portion of the raw material layer and the raw material layer is sintered. The raw material layer is sintered while traveling in the sintering section in one direction to produce sintered light. When the sintering bogie 60 passes one point in the sintering section and the combustion zone reaches the bottom of the sintering bogie 60 and the sintering of the raw material layer is completed, the sintering bogie 60 moves to the end point of the conveyance path The sintered light is cooled, and the sintered light can be distributed to the light distribution chute at the end of the conveyance path.

(Not shown) is connected to the light distribution chute, and the cake of the sintered light distributed from the sintering bogie 60 is supplied to the crusher and crushed, and then charged into a cooler (not shown) associated with the crusher to be cooled. The sintered ores cooled in the cooler can be transferred to the blast furnace process after the granularity is selected.

The air permeability measuring device 700 may be spaced above the sintering bogie 60 and may be installed in the width direction Y across the traveling direction of the bogie. The air permeability measuring device 700 can continuously measure the air permeability due to grain size segregation in the width direction (Y) of the raw material layer in each of a plurality of sections arranged in the direction transverse to the traveling direction of the vehicle.

The plurality of sections are a plurality of sections that are divided in the width direction of the material layer. A plurality of regions are formed by arranging a plurality of region lines extending in the longitudinal direction and spaced apart in the width direction Y on the upper surface and the lower surface of the raw material layer and then sintering them by a plurality of surfaces formed by connecting the region lines in the up- Means a plurality of sections formed on the truck 60. That is, the plurality of sections may extend in the longitudinal direction X and may be arranged in the width direction Y, respectively. For example, a plurality of sections may include a center section (c) and a side edge section (e), and the air permeability measuring apparatus 700 may periodically and precisely measure the above-described air permeability per section.

Since the air permeability measuring apparatus 700 has been described above in detail, the connection structure and operation of the components of the air permeability measuring apparatus 700 will be briefly described below in order to avoid duplication of description.

The air permeability measuring apparatus 700 includes a plurality of hollow tubes 710 that are provided so as to be spaced apart from the upper surface of the raw material layer and extend downward in the longitudinal direction X and in the upward and downward direction, A plurality of flow sensors 720 mounted on the upper portion of the hollow tube 710, a support body 740 spaced from the raw material layer and installed in the width direction Y and fixing the upper portions of the hollow tubes 710, And a plurality of operation portions 740 mounted to connect the upper and lower portions of the respective hollow tubes 710 and regulating the expansion and contraction of the hollow tube 710.

The hollow tube 710 includes a cylinder 711 extending toward the raw material layer and equipped with a flow velocity sensor 720 and fixed to the support body 740. The hollow tube 710 is mounted on the lower portion of the cylinder 711, A ring-shaped weight 713 mounted on the lower part of the extension pipe 712, and a ring-shaped weight 713 mounted on the lower part of the weight 713. The ring-shaped weight 713 is in contact with the upper surface of the raw material layer And a ring-shaped pad 714 that can be spaced apart.

The flow rate sensor 720 can be mounted on the cylinder 711 of the hollow tube 710 to measure the flow rate of the gas flowing through the passage of the cylinder 711. The calculator can calculate the air permeability of the treated product by receiving the flow velocity value from the flow velocity sensor 720. [

The operating portion 730 includes a rotating means 731 mounted on the upper portion of the hollow tube 710 and formed to be capable of free rotation and load rotation, a rotating shaft 733 mounted on a lower portion of the hollow tube 710, And may include a guide 732 that extends toward the top of the layer and is capable of free stretching and power shrinkage in an elongated direction and having an upper portion mounted to the rotating means 731 and a lower portion mounted to the rotating shaft 733. [ .

The support body 740 may include a horizontal bar spaced above the raw material layer and provided in a direction transverse to the workpiece, for example in the width direction Y, and a plurality of protruding bars mounted in connection with the horizontal barrel bodies 711 have.

In order to improve the recovery rate and strength of the sintered ores, the air permeability is measured at a plurality of positions in the width direction (Y) of the raw material layer in real time, and the grain size segregation in the width direction (Y) of the raw material layer is controlled so as to reduce the variation in the value.

In the embodiment of the present invention, after the widthwise charging controller 800 receives the breathability measured by the breathability measuring apparatus 700, the dresser 800 can be controlled using the value, And the porosity is uniform in the width direction (Y) of the width direction (Y). Accordingly, the propagation speed of the flame becomes uniform in the width direction (Y) of the raw material layer, whereby the recovery rate of the sintered light can be improved, and the variation in the strength can be reduced.

Referring to Fig. 5, the operation of the air permeability measuring apparatus 700 will be described. The raw material M is charged into the sintering bogie 60 to form a raw material layer and the raw material layer travels the feeding path at a speed of several m / s by the sintering bogie 60.

5 (a), the operation portion 730 is freely expanded and the lower end of the hollow tube 710 is lowered. 5 (b), when the lower end of the hollow tube 710 is in contact with the raw material layer to form a contact area, as shown in Fig. 5 (c), the actuating part 730 is freely stretched and freely rotates, The lower end of the pipe 710 can be moved together with the raw material layer in the traveling direction of the car using the traveling of the raw material layer while keeping the state in contact with the raw material layer. Thus, the lower end of the hollow tube 710 maintains a constant contact area at the same position on the upper surface of the raw material layer. At this time, the flow velocity sensor 720 measures the gas flow rate inside the hollow tube 710, and the calculation section receives the value and measures the air permeability of the raw material layer.

Thus, damage to the lower end of the hollow tube 710 due to friction with the rough surface of the raw material layer can be suppressed or prevented, and gas leakage through the rough surface of the raw material layer can be suppressed or prevented. That is, in operating the air permeability measuring apparatus 700, durability and airtightness can be improved, and the accuracy of measurement can be improved.

5 (d), the actuating part 730 is subjected to power cycling and undergoes load rotation so that the lower end of the hollow tube 710 is spaced apart from the upper surface of the raw material layer, It is possible to return to the opposite direction. At this time, the operation of the flow rate sensor 720 is temporarily stopped. 5 (e), the operating portion 730 is freely stretched so that the hollow portion of the raw material layer is hollow The lower end of the pipe 710 is lowered. Thus, measurement of the air permeability next time in the raw material layer can be repeated. As described above, the air permeability measuring apparatus 700 repeats the above-described process, and it is possible to periodically calculate the air permeability of the raw material layer by a plurality of sections in the width direction. The air permeability value of the raw material layer calculated for each of a plurality of sections in the width direction is utilized for controlling the grain size and grain size of the raw material layer. On the other hand, it is also possible to calculate the porosity by the grain size deviation of the raw material layer from the air permeability value.

The breathability of the raw material layer calculated for each of a plurality of sections in the width direction (Y) is measured by periodically repeating the breathability measurement by periodically repeating the breathability measurement in each breathability measurement apparatus (700) The grain size in the width direction (Y) of the layer can be utilized to control segregation. That is, the air permeability value in the width direction (Y) of the raw material layer measured by the air permeability measurement device 700 can be utilized as a reference value for controlling the grain size segregation in the width direction (Y) of the raw material layer. That is, during the sintering of the raw material layer, the gas leaking between the upper surface of the raw material layer and the air permeability measurement device is minimized, the air permeability of the raw material layer is measured in real time, the air permeability widthwise deviation is calculated with the measured value It is possible to design a charging pattern of the raw material M in the width direction Y for uniform flame propagation on the basis. On the other hand, it is also possible to calculate the porosity by the grain size deviation in the width direction (Y) of the raw material layer from the breathability value.

Hereinafter, a method of controlling the grain size segregation in the width direction (Y) of the raw material layer will be described together with the description of the width direction charging controller 800 and the loading machine 900. The widthwise charging controller 800 may include an operation unit 810 and a control unit 820. The calculating unit 810 can calculate the deviation value by receiving measured values from the respective air permeability measuring units. The air permeability value of the side edge section (e) can be obtained based on the air permeability value of the widthwise center section (c), for example. Of course, the deviation values can be obtained in various ways. The deviation value may be transmitted to the controller 820.

The control unit 820 determines the flow velocity difference between the center section c and the side edge section e using the input deviation value and determines the center section c and the side sections e of the width direction And controls the operation of the loading and unloading apparatus 900 so that the raw material having a small particle size is loaded in a region where the flow rate is high.

The loading device 900 may be referred to as a shuttle conveyor, for example. The loading device 900 includes a conveyor portion 910 capable of conveying the raw material M and a shuttle portion 910 capable of reciprocating the downstream side end portion of the conveyor portion 910 in the other direction Y, 920). At this time, the structure of the shuttle portion 920 is not particularly limited, and it may be a structure that can swing forward or backward in the width direction Y or expand and contract, for example, and have a cylinder structure.

The loading device 900 is installed such that the downstream end of the conveyor unit 910 is located on the inlet opening of the hopper 10 and the raw material M is loaded on the upstream side (not shown) Then, the raw material M is dropped into the hopper 10.

The downstream side end portion of the conveyor portion 910 is reciprocated in the width direction Y by the shuttle portion 920 to load the raw material M in the hopper 10, The raw material M can be charged so that the central portion forms a valley with a concave shape and the both side edges in the width direction form a convex shape. In this case, the top surface shape of the raw material M charged into the hopper 10 is referred to as a V shape. Alternatively, as shown in the drawing, the raw material M can be charged so that the central portion in the width direction forms a convex hill and the both side edges in the width direction form concave valleys. In this case, the shape of the top surface of the raw material M charged into the hopper 10 is referred to as an inverted V shape.

The raw material with large grain size (M) tends to roll down from the hill to the valleys, and the raw material with small grain size (M) remains on the hill side or rolls only a short distance toward the valley. This principle can be used to control the grain size Y segregation in the width direction Y of the raw material M in the hopper 10 and this leads to grain size segregation in the width direction Y of the raw material layer loaded in the sintered bogie 60 .

Accordingly, in the V-shaped upper surface shape, a relatively large number of raw materials M having a large particle size are gathered at a central portion in the width direction, and a phenomenon in which the raw material M having a large particle size at the center portion in the width direction Is deepened. At this time, the depth of the bone means a value obtained by subtracting the height H1 of the bone from the height H2 of the hill.

On the other hand, in the inverted V shape, relatively large amounts of raw materials M are gathered at both side edges in the width direction, and relatively large amounts of raw materials M are gathered in the center portion in the width direction. At this time, as the depth of the valley is deeper on the upper surface of the inverted V shape, the phenomenon that the raw material M having large particle size is gathered on both side edges in the width direction is intensified.

If the reciprocating speed in the width direction Y of the shuttle portion 920 and the conveying speed and conveying speed of the conveyor portion 910 are adjusted so that the raw material M charged into the hopper 10 has a V-shaped top surface shape, The raw material M having a relatively small grain size can be charged into the side edge section e while charging the raw material M having a relatively large grain size to the center section c of the layer. In this case, the larger the depth of bone, the greater the difference in particle segregation, and the smaller the depth of bone, the smaller the particle segregation difference.

On the other hand, if the reciprocating speed in the width direction Y of the shuttle portion 920 and the feed amount and conveying speed of the conveyor portion 910 are adjusted so that the raw material M to be loaded into the hopper 10 has an inverted V- It is possible to charge the raw material M at a relatively small grain size in the widthwise center section c of the raw material layer and to load the raw material M having a relatively large grain size in the both side edge sections e respectively. In this case, the larger the depth of bone, the greater the difference in particle segregation, and the smaller the depth of bone, the smaller the particle segregation difference.

In this case, if a plurality of bones and hills are formed in a desired position in the width direction Y inside the hopper 10, grain size segregation with respect to desired sections in the width direction Y of the raw material layer can be smoothly adjusted .

The operation of the loading machine 900 described above can be controlled by the widthwise loading controller 800 and the widthwise loading controller 800 can control the widthwise direction Y of the raw material layer based on the difference in air permeability The operation of the loading device 900 can be controlled so that the air permeability becomes uniform in the width direction Y of the raw material layer. The operation pattern of the loading device 900 for this purpose may be various and may be determined differently according to process conditions such as the hopper size, the amount of raw material, and the traveling speed of each sintered ores.

The loading device 900 is controlled by the width direction loading controller 800 and adjusts the transfer amount of the raw material, the feeding speed of the raw material, and the drop position in the width direction of the raw material in various patterns, The raw material is discharged from the hopper 10 and then charged into the sintered bogie 60 to have a grain size deviation in the width direction Y so that the width direction Y of the raw material layer is adjusted, Grain segregation can be controlled.

The air permeability can be uniformly adjusted in the width direction Y of the raw material layer by the loading device 900 and the gas is sucked at all the positions in the width direction Y of the raw material layer at a uniform speed, The radio waves can be made uniform in the width direction Y. [ The flow velocity of the gas passing through the raw material layer becomes uniform in the width direction (Y), and the propagation of the flame can be uniform in the width direction (Y). Therefore, a uniform thermal energy distribution in the width direction (Y) is formed inside the raw material layer. As a result, the recovery rate and the productivity of the sintered ores are improved, the intensity deviation is reduced, and the quality is improved.

The above-described embodiments of the present invention are for the explanation of the present invention and are not intended to limit the present invention. It should be noted that the configurations and the methods disclosed in the above embodiments of the present invention may be modified into various forms by combining or intersecting with each other, and such modifications may be considered within the scope of the present invention. That is, the present invention may be embodied in various forms within the scope of the claims and equivalents thereof, and it is possible for the technician skilled in the art to make various embodiments within the scope of the technical idea of the present invention. .

10; Hopper 60: sintered bogie
700: air permeability measuring device 710: hollow tube
712: Extension tube 713: Weight weight
714: Pad 730:

Claims (14)

A hollow tube spaced from the upper surface of the treated material and extending toward the upper surface of the treated material;
A flow velocity sensor mounted on the hollow tube; And
And a support body installed to be spaced apart from the object to be processed and to which the hollow tube is mounted,
Wherein at least a part of the hollow tube is formed so as to be stretchable in a direction in which the processed material is fed and in a direction toward the processed material. The method according to claim 1,
And an operation part connected to at least a part of the hollow tube to adjust the expansion and contraction. The method of claim 2,
Wherein the hollow tube has an upper portion fixed to the support and a lower portion periodically or selectively expanded and contracted and capable of contacting and separating from the upper surface of the processed product. The method of claim 3,
Wherein the operating portion extends toward an upper surface of the processed product and is mounted by connecting an upper portion and a lower portion of the hollow tube. The method of claim 4,
Wherein the operating portion is rotatably mounted on the upper and lower portions of the hollow tube, and the length is adjustable in the extended direction. The method of claim 5,
Wherein the operating portion is formed so as to allow free rotation and load rotation with respect to an upper portion of the hollow tube, and is formed so as to allow free stretching and power shrinkage in an elongated direction. The method according to claim 1,
In the hollow tube,
A cylinder extending toward said processed object and to which said flow rate sensor is mounted;
And an expansion pipe mounted on a lower portion of the tubular body and capable of contacting an upper surface of the processed material. The method of claim 7,
In the hollow tube,
A ring-shaped weight attached to the lower portion of the extension pipe;
And a ring-shaped pad mounted on the weight. The method of claim 2,
Wherein,
Rotating means mounted on the upper portion of the hollow tube;
A rotating shaft mounted on a lower portion of the hollow tube; And
And a guide extending toward an upper portion of the object to be processed and having a length adjustable in an elongated direction, an upper portion mounted to the rotating means, and a lower portion mounted to the rotating shaft. The method of claim 9,
Wherein the rotating means includes a motor capable of free rotation and load rotation,
Wherein the guide includes any one of an actuator, a linear motor, and an LM guide that is configured to allow free extension and power shrinkage. A sintering truck installed so as to be able to travel in the traveling direction of the truck, and charged with the raw material;
And an air permeability measurement device which is installed on the upper side of the sintered bogie toward the raw material layer charged in the sintered bogie and at least part of which is formed so as to be able to contact with the upper surface of the raw material layer Sintering plant. The method of claim 11,
The air permeability measurement device includes:
A hollow tube provided so as to be spaced apart from an upper surface of the raw material layer and at least a lower portion being formed so as to be able to expand and contract in a traveling direction and a vertical direction;
A flow velocity sensor mounted on the upper portion of the hollow tube;
A support spaced from the raw material layer and fixing the upper portion of the hollow tube;
And an operating part connected to an upper part and a lower part of the hollow tube to control expansion and contraction of the hollow tube. The method of claim 12,
In the hollow tube,
A cylinder extending toward the raw material layer, to which the flow rate sensor is mounted and fixed to the support;
An extension pipe mounted on a lower portion of the cylinder and periodically or selectively expanded and contracted by the operation portion;
A ring-shaped weight attached to the lower portion of the extension pipe; And
And a ring-shaped pad mounted on a lower portion of the weight and capable of contacting and separating from the upper surface of the raw material layer. The method of claim 12,
Wherein,
Rotating means mounted on an upper portion of the hollow tube and formed to be capable of free rotation and load rotation;
A rotating shaft mounted on a lower portion of the hollow tube; And
And a guide which extends toward an upper portion of the raw material layer and is capable of free stretching and shrinking in an elongated direction, an upper portion mounted to the rotating means, and a lower portion mounted to the rotating shaft.

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