KR101400337B1 - Apparatus and method for producting sinter - Google Patents

Abstract

Disclosed are an apparatus and a method for producing a sintered ore, including: a sinter cart for accommodating a raw material for sintering; an ignition furnace installed on top of the sintering cart to ignite the surface of the raw material for sintering; a wind box prepared on the bottom of the sintering apparatus for sintering the raw material for sintering by inhaling the air of the raw material for sintering; an inhaling fan installed on the wind box to additionally inhale the air flowing in from the edge of the ignition furnace; and a control unit for controlling the operation of the inhaling fan.

Description

[0001] APPARATUS AND METHOD FOR PRODUCTING SINTER [0002]

The present invention relates to an apparatus and a method for producing sintered ores.

The sintering process is the first step in the sintering process, which is a process for making iron ore. It is a process to remove impurities in the iron ore to make the quality uniform and to make iron ores powder to a certain size. The resultant is the sintered ores, and the sintered ores are semi-finished products that are charged into the blast furnace for molten iron production.

The process for producing sintered ores is as follows. First, the raw material for sinter is supplied to the hopper by the conveyor and charged into the sintering machine. The surface layer portion of the raw material for sinter is ignited while passing through the ignition furnace. Thereafter, the temperature is raised by the solid fuel contained in the sintering raw material by the air sucked from the lower portion of the sintering machine bogie and burned from the upper layer to the lower layer, whereby the sintering raw material is melted and the sintered body (Bulking) is formed.

The sintered ores generated in this manner are transferred to the blast furnace.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2011-0034480 (April, 2011, method for producing sintered ores).

Embodiments of the present invention provide an apparatus and method for producing sintered ores having a high sintering rate.

According to an aspect of the present invention, there is provided a sintering machine comprising: a sintering machine carriage for receiving a raw material for sintering; An igniter provided on an upper portion of the sintering machine to ignite the surface of the raw material for sinter; A wind box provided under the sintering machine for sintering the sintering raw material by sucking air on the sintering raw material; A suction fan installed in the wind box for sucking additional air introduced at an edge of the ignition path; And a control unit for controlling the suction fan operation.

The suction fan may be installed on both sides of the wind box.

And a temperature sensor coupled to the ignition furnace for measuring the surface temperature of the raw material for sintering in each of the width direction sections.

And a pressure sensor installed in the wind box to measure a pressure of the air flowing into the wind box in the width direction of the wind box.

And a flow sensor installed in the wind box to measure the flow rate of the air flowing out from the inside of the wind box in the width direction.

And a dust collector for collecting the air sucked through the wind box and discharging it to the outside.

According to another aspect of the present invention, there is provided a sintering machine comprising: a sintering machine for receiving a raw material for sintering; By ignition to ignite the surface of the raw material for sinter; A wind box for sucking air on the raw material for sinter; And a suction fan installed in the windbox for sucking the additional air flowing from the edge of the ignition path, wherein the temperature sensor measures the surface temperature of the sintering raw material in the width direction Measuring; Measuring a pressure of air introduced into the wind box by the pressure sensor in each of the width direction sections when a deviation of the surface temperature of the sintering raw material measured by the temperature sensor occurs in each section; And actuating a suction fan installed in the wind box to cause the control unit to suck air in the wind box edge when the edge portion of the wind box is at a high pressure.

The control unit may calculate the pressure difference in the width direction within the wind box and operate the suction fan so that the pressure difference becomes zero.

According to the embodiments of the present invention, it is possible to prevent the occurrence of non-uniform sintering due to the inflow of outside air.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an apparatus for producing sintered ores according to an embodiment of the present invention; FIG.
2 is a view showing a part of an apparatus for producing sintered ores according to an embodiment of the present invention.
FIG. 3 is a graph showing a temperature distribution of sintered light sintered in an apparatus for producing sintered ores according to an embodiment of the present invention. FIG.
4 is a flowchart illustrating a method of manufacturing an sintered ores according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of an apparatus and method for producing sintered ores according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding elements throughout. A duplicate description will be omitted.

FIG. 1 is a view showing an apparatus for producing sintered ores according to an embodiment of the present invention, and FIG. 2 is a view illustrating a part of an apparatus for producing sintered ores according to an embodiment of the present invention. 3 is a graph showing a temperature distribution of sintered ores in sintered light production apparatus according to an embodiment of the present invention.

1 and 2, an apparatus 100 for producing sintered ores according to an embodiment of the present invention includes a sintering machine 110, an ignition furnace 120, a wind box 130, a suction fan 140, A controller 150 and a dust collector 160. [

The sintering bogie 110 can receive the raw sintering material 10. The sintering bogie 110 is located above the bed 112 coupled to the conveyor belt, which is repeatedly circulating a certain orbit, where the sintering feedstock 10 is burnt and the combustion of the sintering process is performed.

The sintering bogie 110 moves along the bed 112 until the sintering raw material 10 is burned and becomes sintered light and discharges the burned sintered organs from the end of the bed 112.

A surge hopper 111 is installed above the sintering machine carriage 110 and a surge hopper 111 stores the sintering raw material 10 and supplies it to the sintering machine carriage 110. A dividing gate (not shown) is provided on one side of the surge hopper 111 to divide and feed the raw material 10.

The raw material for sinter (10) is a material mixed with raw materials such as iron ore, additives, fuel, and semitransparent materials to be reacted in the sintering process and sintering process.

The ignition furnace 120 may be installed above the sintering bogie 110 to ignite the surface of the raw sintering material 10. A burner 121 is installed in the ignition furnace 120 and receives fuel (COG) and air through an external supply line.

The ignition furnace 120 may be a flame type multi-slit burner or a reflective side burner type. The flame-type multi-slit burner ignites the flame of the burner installed on the upper side directly in contact with the raw material for sinter 10. The reflective side burner ignites the sintering raw material 10 by radiation heat generated by flames on both sides of the ignition furnace 120. FIG. 2 shows a flame type multi-slit burner system.

The wind box 130 may be provided in the longitudinal direction of the bed 112 below the sintering machine carriage 110 so as to communicate with the sintering machine carriage 110 and the bed 112. The wind box 130 sucks air on the sintering machine carriage 110 so that the ignited fire on the sintering machine carriage 110 is continuously ignited to the lower side of the sintering machine carriage 110, So that the sintering raw material 10 charged into the entire interior of the sintering furnace 10 is uniformly sintered. At the same time, the exhaust gas generated in the sintering process may be discharged to the outside.

The suction fan 140 may be installed in the wind box 130 to suck up additional air flowing from the edge of the ignition furnace 120. At the edge of the ignition furnace 120, a sintering machine bogie 110 and a gap are formed, so that air can be introduced from the outside.

Accordingly, the temperature at the edge of the sintering machine bogie 110 may be lowered, which may cause microspheres. Referring to the graph of FIG. 3, it can be seen that the edge temperature on the sintering bogie 110 is lower than the center portion.

The suction fan 140 is installed on the side of the wind box 130 in correspondence with the position where the outside air of the wind box 130 is introduced, and can suck the introduced additional air. As a result, the fine sintering of the raw material for sinter 10 can be prevented. In this case, the suction fan 140 may be installed on both sides of the wind box 130.

When a plurality of wind boxes 130 are arranged, the suction fan 140 may be installed in the wind box 130 adjacent to the ignition furnace 120.

The control unit 150 controls the operation of the suction fan 140 and is connected to a temperature sensor 122, a pressure sensor 131 and a flow sensor 132 to control the operation of the suction fan 140.

The temperature sensor 122 may be installed in the ignition furnace 120 to measure the surface temperature of the sintering raw material 10 on the sintering bogie 110. The temperature sensor 122 can measure the temperature of the raw material 10 in the width direction. In this case, the temperature sensor 122 can measure the temperature by scanning the surface temperature of the raw material for sinter 10.

A sensing unit 113 is provided on the sintering bogie 110. When the temperature sensor 122 of the ignition furnace 120 and the sensing unit 113 on the sintering bogie 110 are connected, The temperature can be measured.

The pressure sensor 131 may be installed in the wind box 130 to measure the pressure in the width direction of the air flowing into the wind box 130. To this end, a plurality of pressure sensors 131 may be disposed above the inside of the wind box 130 at regular intervals.

The pressure sensor 131 measures the pressure of the air flowing into the wind box 130 and sends the result to the controller 150 so that the controller 150 can determine whether the pressure of the edge rises.

If the control unit 150 determines that a pressure rise of the edge occurs based on the measured air pressure value, the suction fan 140 may be operated to lower the pressure of the edge.

The control unit 150 calculates the pressure deviation value so that the control unit 150 can operate the suction fan 140 such that the pressure deviation in the wind box 130 is eliminated.

The flow sensor 132 can measure the flow rate of the air flowing in the wind box 130 in the width direction. To this end, a plurality of flow sensors 132 may be disposed in the lower part of the wind box 130 at regular intervals.

The flow rate sensor 132 measures the amount of air flowing out into the windbox 130 and transmits the result to the controller 150 so that the controller 150 can determine whether there is a flow rate variation within the windbox 130 .

The dust collector 160 communicates with the wind box 130 and discharges the air sucked by the wind box 130 to the outside. And may communicate with all the wind boxes 130 when there are a plurality of wind boxes 130.

The apparatus for producing a sintering machine according to an embodiment of the present invention has been described above. According to this, since the additional air introduced at the edge is removed by the suction fan 140, the edge of the sintered raw material 10 can be prevented from being undesirably smoothed. Next, a method of manufacturing a sintering machine according to an embodiment of the present invention will be described.

4 is a flowchart illustrating a method of manufacturing sintered ores according to an embodiment of the present invention.

4, there is shown a method for producing an sintered ores by using an apparatus for producing sintered ores 100 including a sintering machine bogie 110, an ignition furnace 120, a windbox 130 and a suction fan 140, A step S120 of measuring the surface temperature of the sintering raw material 10 by the sensor 122, a step S120 of determining whether a temperature deviation has occurred, a step of measuring the pressure of the upper part of the wind box 130 by the pressure sensor 131 The control unit 150 calculates the pressure difference S150, the control unit 150 activates the suction fan 140 (S160), the flow rate sensor (S160) (S170) of measuring the flow rate of the lower portion of the wind box (130), and determining whether the flow rate deviation has occurred (S180).

The step S110 of measuring the surface temperature of the sintering raw material 10 by the temperature sensor 122 is a step of measuring the surface temperature of the sintering raw material 10 by intervals of the temperature sensor 122 provided in the ignition furnace 120. In this case, the temperature sensor 122 can be activated when a particular portion of the sintering bogie 110 passes the temperature sensor 122, and can scan the surface temperature to measure the temperature.

Step S120 of determining whether a temperature deviation has occurred is a step in which the controller 150, which has received the surface temperature result measured by the temperature sensor 122, determines whether or not a deviation of the surface temperature by interval has occurred. The control unit 150 does not operate the suction fan 140 when the surface temperature of the edge is high.

The step S130 of measuring the pressure of the upper part of the wind box 130 by the pressure sensor 131 is a step in which the pressure sensor 131 provided on the upper side of the wind box 130 changes the pressure of the air flowing into the wind box 130 This is a step to measure by direction section.

Step S140 of determining whether a pressure deviation has occurred is a step in which the controller 150 having received the pressure value measured by the pressure sensor 131 determines whether or not a deviation of the pressure interval occurs. The control unit 150 does not operate the suction fan 140 when the pressure at the edge is not high and there is no pressure deviation.

The control unit 150 calculates the pressure difference in step S150 when the pressure difference measured by the pressure sensor 131 has occurred, and the controller 150 calculates the pressure deviation.

The control unit 150 activates the suction fan 140 (S160), and operates the suction fan 140 so that the pressure difference becomes zero based on the pressure difference calculated by the control unit 150. [ The suction fan 140 is installed at the edge of the wind box 130 to suck air introduced into the edge.

The step S170 of measuring the flow rate of the lower portion of the wind box 130 by the flow rate sensor 132 is performed such that the flow rate sensor 132 provided below the wind box 130 changes the flow rate of the air flowing out of the wind box 130 to a width And then transmits the measurement to the control unit 150

The step of determining whether a flow rate deviation has occurred is a step of determining whether or not a deviation of the flow rate measured by the flow rate sensor 132 has occurred in the control unit 150 in step S180. It is possible to stop the operation of the suction fan 140 because it can be regarded that the suction fan 140 sucks the additional air at the edge. However, when the flow rate deviation occurs, the suction fan 140 is operated by measuring the pressure again.

According to such a method for producing sintered ores, it is possible to prevent gradual phenomenon due to inflow of outside air at the edge of the raw material for sinter 10 step by step.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

Sintered raw material: 10
Sintering apparatus: 100
Sintering machine Balance: 110
Surge Hopper: 111
Bed: 112
Detection section: 113
By ignition: 120
Burner: 121
Temperature sensor: 122
Wind Box: 130
Pressure sensor: 131
Flow sensor: 132
Suction fan: 140
Control section: 150
Dust Collector: 160

Claims (8)

A sintering machine for receiving the sintering material;
An igniter provided on an upper portion of the sintering machine to ignite the surface of the raw material for sinter;
A wind box provided under the sintering machine for sintering the sintering raw material by sucking air on the sintering raw material;
A suction fan installed in the wind box for sucking additional air introduced at an edge of the ignition path; And
And a control unit for controlling the operation of the suction fan.
The method according to claim 1,
Wherein the suction fan is installed on both edges of the wind box.
The method according to claim 1,
And a temperature sensor coupled to the ignition furnace to measure the surface temperature of the raw material for sintering in each of the width direction sections. The method according to claim 1,
Further comprising: a pressure sensor installed in the wind box for measuring a pressure in each width direction of air flowing into the wind box.
The method according to claim 1,
Further comprising a flow sensor installed in the wind box to measure a flow rate of the air flowing out from the inside of the wind box in the width direction.
The method according to claim 1,
And a dust collector for trapping the air sucked through the wind box and discharging the air to the outside.
A sintering machine for receiving the sintering material; By ignition to ignite the surface of the raw material for sinter; A wind box for sucking air on the raw material for sinter; And a suction fan installed in the wind box for sucking the additional air introduced from the edge of the ignition path, the method comprising the steps of:
Measuring a surface temperature of the raw material for sintering in a width direction section by a temperature sensor;
Measuring a pressure of air introduced into the wind box by the pressure sensor in each of the width direction sections when a deviation of the surface temperature of the sintering raw material measured by the temperature sensor occurs in each section; And
And actuating a suction fan installed in the wind box to cause the control unit to suck air in the wind box edge when the edge portion of the wind box is at a high pressure.
8. The method of claim 7,
Wherein the control unit calculates the pressure difference in the width direction of the inside of the wind box and operates the suction fan so that the pressure difference becomes zero.

Images