KR20030041722A - Apparatus for controlling segregation pushing of mixed raw material for sinter manufacture - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling segregation charging of blended raw material for sinter manufacture are provided to continuously measure content of iron oxide contained in the blended raw material and automatically control an angle in which the blended raw material is charged into sintering car according to the measured value. CONSTITUTION: The apparatus for controlling segregation charging of blended raw material for sinter manufacture comprises an information input device(200) for inputting information including an initial set value and setting a mode; an iron oxide measuring device(201) installed in front of a drum type feeder(107) to measure content of iron oxide (FeO) contained in the blended raw material charged into sintering car(110) through the drum type feeder(107); an instrumentation controller(202) for calculating charging angle according to the content of iron oxide measured by the iron oxide measuring device(201) in case that the mode is set to a charging angle control mode by the information input device(200), calculating angle deviation by comparing the calculated charging angle with current charging angles inputted, and controlling charging angle relative to the calculated angle deviation; an inclination plate(205) the lower part of which is rotationally installed at the upper part of the sintering car(110); an inclined angle control device(204) installed between a support(206) installed in rear of an installation position of the inclination plate(205) in the upper part of the sintering car(110) and the upper end part of the inclination plate(205) to control an inclined angle of the inclination plate according to controlling of the instrumentation controller(202); a potential meter transmitting the detected inclined angles to the instrumentation controller(202) by detecting current inclined angles according to controlling of inclined angle of the inclined angle control device(204); and a screen display device(206) for displaying information on measurement, control and state according to controlling of the instrumentation controller(202) on screen.

Description

Controlling apparatus and method for mixing segregation of raw materials for sintered ore production {APPARATUS FOR CONTROLLING SEGREGATION PUSHING OF MIXED RAW MATERIAL FOR SINTER MANUFACTURE}

The present invention relates to an apparatus and control method for segregation of segregated raw materials for producing sintered ore, in particular, continuously measuring the iron oxide (FeO) content contained in the mixed raw material to be charged prior to charging the mixed raw material in the sintered ore manufacturing furnace, and measuring The present invention relates to a mixing raw material segregation charging control device and method for producing a sintered ore to automatically adjust the angle of the compounding material cut out from the base hopper to the sintering machine truck according to the value.

In general, as shown in Figure 1, the general process for producing sintered ore is mixed with various iron ore having a particle size of 10mm or less by mixing water in a suitable ratio of coke and anthracite, such as limestone, silica sand, serpentine, etc. And a sprocket (not shown) installed in the driving unit and the follower by storing the assembled raw material for sintering (hereinafter, "blended raw material") in a surge hopper (106) and connecting a plurality of trucks (110) connected indefinitely. The volume is automatically calculated in the sintering machine 110 configured to proceed sequentially by the drum feeder (107) to charge the blending raw material by the drum feeder (107).

The cut compound material 117 is charged by inducing segregation in the trolley 110 using the inclined plate 108, and the surface layer portion while the trolley 110 sequentially passes through the fixed ignition furnace 109 immediately after the operation. A sintered ore is produced as the sintering reaction of oxidation and reduction proceeds as the fuel contained in the blended raw material 117 is burned by the suction force from the surface layer to the lower layer while igniting and effective image distance (effective firing area).

FIG. 2 is a diagram illustrating a charging process of a compounding material for manufacturing a conventional sintered ore, and FIG. 3 is a cross-sectional view illustrating a charging problem of a compounding material by a conventional charging process.

Referring to FIGS. 2 and 3, conventionally, when using the charging step of the raw material for producing sintered ore, the raw material for uniformly segregating the compounding material 117 evenly in the cart 110 by the angle of the inclined plate 108 117) There is a need for a method of charging vertical segregation that leads to alleles in the lower layer by forming a small iron ore with a particle size from the upper layer, and many studies have been actively conducted.

However, as shown in FIG. 3, as the iron oxide (FeO) content of the small particle ore is high, the vertical segregation decreases, which is formed in the lower layer of the bed at the time of charging, and the airflow resistance increases when the sintering reaction proceeds below the middle part. In addition, the sintering reaction rate is lowered, causing a problem of reducing the production and quality.

The present invention has been made to solve the above problems, and therefore, an object of the present invention is to continuously measure the iron oxide (FeO) content contained in the compounding material to be charged before charging the compounding material in the sintered ore manufacturing furnace, It is to provide a mixing raw material segregation charging control device and method for producing a sintered ore to automatically adjust the angle of the compounding material cut out of the holding hopper according to the measured value to the sintering machine bogie.

1 is a schematic diagram of a general sintered ore manufacturing process.

2 is an explanatory view of a charging process of the compounding material for manufacturing a conventional sintered ore.

Figure 3 is a balance cross-sectional view for explaining the charging problem of the blended raw materials by the conventional charging process.

Figure 4 is a block diagram of a mixing raw material segregation charging control device for producing sintered ore according to the present invention.

5 is a flowchart of the method for controlling the mixing of segregation of raw materials for producing sintered ore according to the present invention.

Explanation of symbols on the main parts of the drawings

101: iron ore storage tank 102,104: belt conveyor

103: drum mixer 105: main discharge door

106: surge hopper 107: drum type cutting machine

108: inclined plate 109: ignition furnace

110: sintering machine cart 111: wind

112: gas main duct 113: electric dust collector

114: suction pen 115: stack

116: post-layer detection rod 117: blended raw materials

118: upper light 119: main discharge door

120: sintering controller 130: cutting out controller

140: charging controller 200: information input device

201: iron oxide measuring instrument 202: instrumentation controller

204: electric cylinder 205: potential meter

206: screen indicator

As a technical means for achieving the above object of the present invention, the apparatus of the present invention, by the operation of the sintering machine bogie and the operation of the drum-type extruder, the main discharge door and drum type An apparatus for controlling segregation charging of the blended raw material during charging of a lower sintering machine bogie through an extruder, the apparatus comprising: an information input device for inputting information including an initial setting value and a mode setting; An iron oxide measuring device installed at the front end of the drum type extruder and measuring iron oxide (FeO) content contained in the blended raw material charged into the sintering machine truck through the drum type extruder; When the charging angle adjustment mode is set by the information input device, the charging angle according to the iron oxide content measured by the iron oxide measuring device is calculated, and the angle deviation is calculated by comparing the charging angle with the input current charging angle, An instrumentation controller for controlling the charging angle with respect to the angle deviation; An inclined plate installed at an upper end of the sintering machine cart so as to be rotatable; An inclination angle adjusting device installed between an upper end of the inclination plate and a support installed behind the installation position of the inclination plate among the upper portions of the sintering machine bogie, and adjusting the inclination angle of the inclination plate under the control of the instrument controller; A potential meter which detects a current inclination angle of the inclination plate according to the inclination angle adjustment of the inclination angle adjusting device and provides the potential inclination controller to the length controller; And a screen display for displaying measurement, adjustment, and status information according to the control of the instrumentation controller.

In addition, as another technical means for achieving the object of the present invention, the method of the present invention by the operation of the sintering machine bogie and the operation of the drum-type cutting machine, the main raw material, the drum In the method of controlling segregation charging of the blended raw material during charging into a lower sintering machine bogie through a die cutting machine and an inclined plate, the iron oxide (FeO) content contained in the blended raw material when the charging angle adjustment mode is set. Continuously measuring, and calculating a charging angle by using a predetermined relation using the measured iron oxide content; A second step of measuring a current charging angle by the inclined plate 205; A third step of comparing a charging angle corresponding to the measured iron oxide content with a current charging angle and adjusting the charging angle of the inclined plate 205 according to the comparison result; A fourth step of displaying measurement, adjustment, and status information related to the control on a screen; And if there is no end selection after determining the end, the process proceeds to the first step, and the fifth step ends when the end selection is made.

Hereinafter, with reference to the accompanying drawings for the blending raw material segregation charging control device for producing sintered ore according to the present invention will be described in detail the configuration and operation. In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

Figure 4 is a block diagram of the mixing raw material segregation charging control device for producing sintered ore according to the present invention, referring to Figure 4, the mixing raw material segregation charging control device for producing sintered ore according to the present invention is the operation of the sintering machine bogie 110 and drum type By the operation of the cutting machine 107, while charging the compounding material for sintering stored in the surge hopper 106 into the lower sintering machine truck 110 through the main discharge door 119 and the drum-type cutting machine 107, It is configured to control segregation charging of the blended raw material.

The mixed raw material segregation charging control device for producing sintered ore according to the present invention is installed in the front end of the drum-type breaker 107 and the information input unit 200 for setting information and mode setting including the initial set value, the drum-type cutting Iron oxide measuring device 201 for measuring the iron oxide (FeO) content contained in the blended raw material charged into the sintering machine truck 110 through the discharge unit 107, and the charging angle adjustment mode by the information input device 200 If set, the charging angle according to the iron oxide content measured by the iron oxide measuring device 201 is calculated, and the angle difference is calculated by comparing the charging angle with the input current charging angle, and the charging angle is calculated for this angle deviation. Instrument controller 202 to control, the inclined plate 205 is provided with the lower end is rotatable in the upper portion of the sintering machine trolley 110, the rear of the installation position of the inclined plate 205 of the upper part of the sintering machine trolley 110 On An inclination angle adjusting device 204 installed between the supported support 206 and the upper end of the inclination plate 205 to adjust the inclination angle of the inclination plate under the control of the instrumentation controller 202 and the inclination angle adjusting device 204. A potential meter 205 for detecting the current inclination angle of the inclination plate 108 according to the inclination angle control of the inclination plate 108 and providing it to the field controller 202, and measuring, adjusting, and status information according to the control of the instrumentation controller 202. It consists of the screen display 206 to display.

The iron oxide measuring device 201 is a contactless iron oxide measuring device, installed at the front end of the main discharge door 119 and installed at regular intervals from the blended raw material 117 to measure the content of iron oxide (FeO), which is the Existing device for measuring the content is sufficient, for example, a known technique, the electromagnetic force changes according to the iron content, and the frequency changes according to the change of the electromagnetic force, the frequency according to the iron content It is also possible to use frequency detection devices which are detected differently.

The inclination angle adjusting device 204 is a technical means for adjusting the inclination angle of the inclination plate according to the height change, which can be implemented by various technical methods, in the present invention, for simple implementation and installation, the sintering machine bogie 110 It is preferable that the upper part of the upper side) be configured with an electric cylinder installed between the support base 206 provided behind the installation position of the inclined plate 205 and the upper end of the inclined plate 205.

The instrumentation controller 202 uses the iron oxide content (X) measured by the iron oxide meter 201 in advance to determine the iron oxide content-loading angle relation, Is configured to calculate the charging angle, i.e., the inclined plate angle Y. "

When the contactless iron oxide measuring device 201 is implemented as a frequency detection device, the instrumentation controller 202 mixes the measurement of the iron oxide (FeO) content at a frequency measured by a built-in sensor in the compounding material 117. The iron oxide (FeO) content in the raw material 117 is calculated. At this time, the content of the iron oxide (FeO) of the blended raw material 117 feedback control the angle of the inclined plate 108 to 50 ~ 70 ° by the correlation between the content of iron oxide and segregation obtained in a number of operations Is carried out.

5 is a flowchart of the method for controlling the mixing of segregation of raw materials for producing sintered ore according to the present invention.

Based on the accompanying drawings, the operation of the preferred embodiment of the present invention configured as described above will be described in detail below.

In the raw material segregation charging control for producing sintered ore according to the present invention, the sintered compound raw material stored in the surge hopper 106 is operated by the operation of the sintering machine trolley 110 and the operation of the drum-type cutting machine 107. 119), segregation charging of the blended raw material is controlled during charging into the lower sintering machine trolley 110 through the drum-type plunger 107 and the inclined plate 205. That is, when the operation signal is input from each of the sinter controller 120, the cut-out controller 130 and the charging controller 140, it is determined that the sintered ore manufacturing operation, and then performs the control according to the present invention (S51) It explains in detail.

4 and 5, first, in the first step (S52, S53), when the charging angle adjustment mode is set, the iron oxide (FeO) content contained in the blended raw material 117 is continuously measured.

In detail, the iron oxide (FeO) content measured by the iron oxide measuring device is measured during the operation of the sintering machine 110 and at the front end of the main discharge door 119 installed under the surge hopper 106. Table 1 shows the values obtained by chemically analyzing a plurality of samples of the blended raw material 117 discharged.

[unit:%] division Test1 Test 2 Test 3 Test 4 Test 5 Remarks Measures 7.85 8.15 7.69 8.14 9.08 Chemical test value 7.83 8.07 7.81 8.16 9.11 Deviation 0.02 0.08 0.12 0.02 0.03

As shown in Table 1, it can be seen that the deviation between the actual measured value and the value directly chemically analyzed is almost negligible.

In addition, in the present invention, in order to find out the relationship between the iron oxide content and the loading segregation degree, the layer thickness of the blended raw material 117 is set to 700 mm and the sintering machine 110 speed is set to 2.90 m / min. After setting the inclined plate 108 at an acute angle (56 °) through the drum-type extruder 107, the degree of segregation of the iron according to the content of iron oxide (FeO) charged in the sintering machine trolley 110 is measured. The measurement results are as shown in Table 2 below.

[unit:%] division Test 1 Test 2 Test 3 Remarks Iron oxide content ≥7.45 7.46-7.89 7.90 ≤ Charge segregation 0.38 0.31 0.27

In general, when the segregation degree in the sintering machine 110 is 0.30% or less, the air permeability is lowered, which leads to a decrease in sintering productivity. As shown in Table 2, the iron oxide (FeO) content in the blending raw material 117 is 7.90. In the case of%, it can be seen that the segregation degree can be more than 0.30% by adjusting the inclination angle by gradually changing the inclination plate 108 of the present invention.

Here, the iron oxide (FeO) content in the range of 7.40 ~ 8.00% by changing the angle of the inclined plate 108 to maintain the segregation degree is always 0.3% or more, based on the information by this experiment iron oxide content ( A correlation between X) and the inclined plate angle (Y) was obtained, and the results are shown in Table 3 below.

[Unit: °,%] division Test 1 Test 2 Test 3 Test 4 Test 5 Test 6 Test 7 Remarks Iron oxide content 7.40 7.50 7.60 7.70 7.80 7.90 8.00 FeO ± 0.5 Inclined plate angle 55.0 55.5 56.2 57.6 59.3 62.5 68.4 Correlation Y = 6.0244 X3 91.139 X2 + 352.03 X (Y = slope plate angle, X = iron oxide content)

Using the iron oxide content measured in the first step to calculate the loading angle by a predetermined relation, wherein the iron oxide content-loading angle relation previously determined using the measured iron oxide content (X) is As shown in Equation 1, the charging angle, that is, the inclined plate angle Y is calculated by the following Equation 1.

"

Next, in the second step S54, the potential meter 205 measures the current inclination angle, that is, the charging angle, of the inclination angle and provides it to the instrumentation controller 202.

Next, in a third step S55, the instrument controller 202 compares the charging angle corresponding to the measured iron oxide content with the current charging angle, and adjusts the charging angle of the inclined plate 205 according to the comparison result. To this end, it will be described in detail, the charging angle adjustment range by the inclined plate 108 is set to approximately 50 ~ 70 ° range, and the angle adjustment according to the angle deviation is adjusted within this set adjustment range.

Next, in the fourth step S56, the measurement, adjustment, and status information related to the control are displayed on the screen, which is displayed on both the control state and the signal data on the cab screen, repeating the same method as described above. Stable ore with improved productivity is produced.

Finally, in the fifth step S57, if there is no end selection after determining the end, the process proceeds to the first step and ends at the end selection.

As described above, according to the present invention, by controlling the angle of the inclined plate 108 in accordance with the iron oxide (FeO) content of the blended raw material 117 used in the production of sintered ore, the segregation degree is automatically adjusted to 0.3% or more, compared with the conventional method. The quality of the sintered ore can be improved while improving productivity.

According to the present invention as described above, prior to charging the blended raw material in the sintered ore manufacturing furnace, the iron oxide (FeO) content contained in the blended raw material to be continuously measured and the blended raw material cut out in the holding hopper according to the measured value By automatically adjusting the angle of loading into the sintering machine bogie, fine particles can be introduced into the upper layer, so that charging with a segregation degree suitable for productivity is possible, thereby providing a special effect of improving productivity and manufacturing cost. It is.

The above description is only a description of specific embodiments of the present invention, and the present invention is not limited to these specific embodiments, and various changes and modifications of the configuration are possible from the above-described specific embodiments of the present invention. It will be apparent to those skilled in the art to which the present invention pertains.

Claims (6)

By the operation of the sintering machine trolley 110 and the operation of the drum-type extruder 107, the sintered compound raw material stored in the surge hopper 106 is lowered through the main discharge door 119 and the drum-type extruder 107. In the apparatus for controlling segregation charging of the blended raw material during charging into the sintering machine bogie 110 of An information input unit 200 for inputting information and mode setting including initial setting values; Iron oxide measuring device 201 installed at the front end of the drum-type cutting machine 107 to measure the iron oxide (FeO) content contained in the blended raw material charged into the sintering machine truck 110 through the drum-type cutting machine 107. ); When the charging angle adjustment mode is set by the information input unit 200, the charging angle according to the iron oxide content measured by the iron oxide measuring device 201 is calculated, and the charging angle is compared with the input current charging angle. An instrumentation controller 202 for calculating the angular deviation and controlling the charging angle with respect to the angular deviation; An inclined plate 205 installed at an upper end of the sintering machine cart 110 so as to be rotatable; The inclined plate is installed between the upper end of the inclined plate 205 and the support 206 provided at the rear of the installation position of the inclined plate 205 among the upper parts of the sintering machine cart 110, and the inclined plate under the control of the instrument controller 202. Tilt angle adjusting device for adjusting the tilt angle of the 204; A potential meter 205 which detects a current inclination angle of the inclination plate 108 according to the inclination angle adjustment of the inclination angle adjusting device 204 and provides the inclination controller 202 with the potential meter 205; And A raw material segregation charging control device for sintered ore manufacturing, characterized in that it comprises a screen display (206) for displaying the measurement, adjustment and status information under the control of the instrumentation controller (202). According to claim 1, wherein the inclination angle adjusting device 204 Compound raw material segregation for sintered ore manufacturing, characterized in that composed of an electric cylinder installed between the upper end of the support plate 206 and the upper end of the inclined plate 205 of the sintering machine trolley 110, the installation position of the inclined plate 205 Charging controls. The instrument of claim 1, wherein the instrument controller 202 The iron oxide content-loading angle relation previously determined using the iron oxide content (X) measured by the iron oxide meter 201, ie, " ", The charging angle, that is, the inclined plate angle (Y) to calculate the mixing raw material segregation charging control device for producing sintered ore. By the operation of the sintering machine trolley 110 and the operation of the drum-type cutting machine 107, the main raw material 119, the drum-type cutting machine 107 and the inclined plate In the method of controlling segregation charging of the blended raw material during charging into the lower sintering machine bogie 110 through 205, When the charging angle adjustment mode is set, the first step of continuously measuring the iron oxide (FeO) content contained in the blended raw material 117, and using the measured iron oxide content to calculate the charging angle by a preset relational formula ; A second step of measuring a current charging angle by the inclined plate 205; A third step of comparing a charging angle corresponding to the measured iron oxide content with a current charging angle and adjusting the charging angle of the inclined plate 205 according to the comparison result; And A fourth step of displaying measurement, adjustment, and status information related to the control on a screen; And And after the determination of the end, if there is no end selection, the process proceeds to the first step, and a fifth step of terminating the end selection is provided. The method of claim 4, wherein the first step The iron oxide content-loading angle relation previously determined using the measured iron oxide content (X), ie, " ", The charging angle, that is, the inclined plate angle (Y) to calculate the raw material segregation charging control method for producing sintered ore. The method of claim 4, wherein the fourth step The charging angle adjustment range by the inclined plate 108 is set to approximately 50 ~ 70 ° range, The method of controlling the segregation of the raw material segregation for sintered ore manufacturing, characterized in that for adjusting the angle adjustment according to the angle deviation within this set control range.