KR101480873B1 - Apparatus and control method for crushing with uniform size coke using in sintering process - Google Patents

Abstract

The present invention relates to a crushing apparatus for crushing minute coke for sintering and a method of controlling the crushing apparatus, and more particularly, it relates to a crushing apparatus for crushing minute coke for sintering, It is possible to control the cutting amount so that the screen group and the secondary crusher group can be operated at the same time, and the effective particle size of the crushed coke can be improved by automatically controlling the roll interval of the crusher group. In addition, And crushing and then drying the crushed coke to improve the crushability and dryness of the crushed coke, thereby satisfying both the productivity and the quality of the sintered ores.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a homogeneous size crushing apparatus for crushing minute cokes for sintering,

More particularly, the present invention relates to a crushing apparatus for crushing minute cokes for sintering, and more particularly to a crushing apparatus for crushing minute crushing sintered compacts for sintering, which can always be crushed to a uniform particle size irrespective of initial particle size change of sintered crushed cokes, And a control method thereof.

In the sintering process, as shown in Fig. 1, a large amount of various raw materials and fuels, which are a large amount of various raw materials and fuels stored in the dowel bin 1, are extracted by the weigh belt 2 and then mixed together with moisture in the mixer 3 After the mixing, the belt is conveyed to the surge hopper 5 by the belt conveyor 4 and temporarily stored.

Thereafter, the upper light stored in the upper light hopper 6 and the blend material stored in the surge hopper 5 are conveyed in an appropriate amount on the truck 7 of the sintering machine, and the truck 7 carrying the blend material is conveyed to the igniter 8 ) Is ignited at the upper part of the blend material due to the fuel coke. The amount of air sucked into the main blower 11 through the wind box 12 installed in the lower portion of the sintering machine 10 is increased So that the complexed raw material is inhaled. When the bogie 7 reaches almost the direction of the crusher 9 due to the suction air volume of the main blower 11, the blended raw material on the bogie 7 is sintered down to the bottom, The sintered ores are crushed to a predetermined size or smaller and then loaded on the cooler 15.

In general, when sintering proceeds at a low temperature, bonding occurs by a diffusion reaction. The sintered ores obtained by this bonding have a high porosity, a good gas permeability and a reduced reactivity, but a somewhat weaker strength. On the other hand, when the sintering proceeds at a high temperature, the slag in the blended raw material acts as a fusing material, and the ore particles remaining in a solid state are firmly bonded to the slag component, so that the microporosity is low and the reducing ability is poor. .

Thus, the partial coke used as the fuel for sintering is an important factor in the physical properties, especially the particle size composition, rather than the influence on the chemical properties. Such particle composition also affects the combustion process and the maximum temperature reached in the sintering operation Which is a very important factor in sintering.

Generally, when all the conditions of the partial coke are kept constant and sintering is examined after sizing with various particle sizes, the sintering time tends to be shortened as the particle size of the minute coke increases, and when the particle size of the minute coke is too large There is unburned coke which does not function as a sintering heat source.

Therefore, in order to improve the effective particle size of the sintered fraction coke, conventionally, minute coke having various particle sizes has been crushed to the target particle size in the particle size adjustment crushing facility of Fig. 2 and used.

2, the coke is conveyed by the conveyor belt 20, stored in the first and second hoppers 22a and 22b, discharged using the feeder 23, And the wastewater is charged into the surge hopper 29. The wastewater is charged into the surge hopper 29 at a rate of 3 mm or more and crushed to 3 mm or less.

As described above, since the particle sizes of the coke to be crushed by the crushing plant are various, even when crushed by the crusher, crushing by the crusher causes not only a large deviation in particle size but also uniform crushing, .

Therefore, there is a need to always crush the minute coke, which is the fuel used in the sintering operation, at a uniform particle size regardless of the change in initial particle size.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a sintering method and a sintering method which are capable of uniformly distributing sintered coke, And to provide a particle crushing apparatus and a control method therefor.

Another object of the present invention is to provide a sintering apparatus capable of increasing the effective particle size of the coke oven by controlling the amount of cut so that the first screen group and the second crusher group can be operated simultaneously, And to provide a uniform particle size crushing apparatus and a control method thereof.

It is still another object of the present invention to improve crushing performance and dryness of a coke oven by performing addition of hot water at the time of crushing of coke oven and crushing and drying the coke oven to thereby simultaneously satisfy the productivity and quality of the sinter.

In order to achieve the above object, the present invention provides a uniform particle size crushing apparatus for sintering, comprising: a crushing unit for crushing a crushed sintered coke to a uniform particle size, A primary screen group consisting of a first screen for first dividing a minute coke charged from one or more import storage hoppers which are installed adjacent thereto to store the minute coke, based on a target particle size; A screening hopper installed to store minute cokes that are first quartzed from the first screen of the primary screen group and have a finer particle size greater than or equal to the granularity standard, a two-roll crusher for first crushing the minute cokes in the selective storage hopper A four-roll crusher for crushing the second coke to be crushed in the two-roll crusher, a two-roll interval adjusting unit for automatically adjusting the roll interval of the two-roll crusher by comparing the transport amounts of the two- A 4-roll interval adjusting section for automatically adjusting the roll interval of the 4-roll crusher by comparing the transport amount of the coke, and a 4-roll interval adjusting section for automatically adjusting the roll interval of the 4-roll crusher by passing the 2-roll crusher and the 4-roll crusher, A shredding and secondary screen group comprising screens; And a driving control unit for controlling operations of the primary screen group, the crushing screen and the secondary screen group.

Preferably, the primary screen group comprises a first sensor section for measuring an inventory of minute coke in the import storage hopper, a belt feeder for extracting minute cokes from the import storage hopper in response to the detection signal of the first sensor section, .

The crushing and secondary screen groups may include a second sensor unit for measuring an inventory of minute coke in the selective storage hopper and a second sensor unit for quantitatively cutting out the minute coke in the selective storage hopper in response to the detection signal of the second sensor unit Further comprising a first weigh belt conveyor and a second weigh belt conveyor for quantitatively cutting out the partial coke crushed in the two roll crusher, wherein the two roll distance adjuster comprises a first weigh belt conveyor and a second weigh belt conveyor The roll distance of the two-roll crusher is automatically adjusted by comparing the transport amounts.

The second crushing group may further comprise a third sensor portion for measuring a transport amount of the partial coke conveyed by the first basis belt conveyor and a fourth sensor portion for measuring the transport amount of the partial coke conveyed by the second basis belt conveyor, Roll distance adjusting unit and the four-roll distance adjusting unit adjust the roll spacing of the two-roll crusher and the four-roll crusher based on the deviation of the transport amount of the minute coke measured by the third sensor unit and the fourth sensor unit Adjust.

The sintering method of the present invention for crushing a sintered minute cokes to a uniform particle size and then supplying the same to a single minute coke storage hopper is a method of crushing a sintered minute cokes to a uniform particle size and supplying them to a single minute coke storage hopper 1. A method for controlling a uniform particle size crushing control method for sintering, comprising the steps of: dividing a minute coke extracted from an import storage hopper storing a minute coke into a first quartz based on a target particle size, wherein the minute coke having a sub- Storing the coke as a storage hopper and storing the partial coke having a fineness larger than the granularity reference as a selective storage hopper; The one-piece crushed coke was first crushed by the two-roll crusher from the selective storage hopper, and the one-crushed crushed coke was weighed by the second weigh belt conveyor in a four-roll crusher. Crushing; And a step of automatically adjusting the roll interval of the two-roll crusher when the minute coke transport amount is varied by comparing the minute cokes transported amount before the two-roll crusher is charged with the minute coke transported amount after being injected into the two-roll crusher .

Preferably, the method comprises the steps of passing the two-roll crusher and the four-roll crusher to separate the crushed coke into second quartiles based on the target particle size, and storing the sub-coke having sub- And storing the fractional coke having a finer particle size above the granularity reference as a selective storage hopper.

The details of other embodiments are included in the detailed description and drawings.

According to the present invention as described above, there is an effect that the minute coke, which is the fuel used in the sintering operation, can be always crushed and supplied at a uniform particle size irrespective of the change in the initial particle size. In addition, it is possible to improve the productivity by maintaining the stable quality of the sintered ores by increasing the effective granularity after crushing the minute cokes containing proper moisture and drying them at a constant moisture value at the time of use.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a schematic view of a sintering facility.
Fig. 2 is a schematic view of a plant for crushing the coke as raw material for sinter.
Fig. 3 is a schematic structural view of a uniform particle size crushing apparatus for sintering of fractionated coke according to the present invention.
4 and 5 are flowcharts for explaining a method of controlling the uniform particle size fracture of the sintered partial coke according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 to 5. FIG. These embodiments of the present invention are only for illustrating the present invention, and the present invention is not limited thereto.

Fig. 3 is a schematic structural view of a uniform particle size crushing apparatus for sintering of fractionated coke according to the present invention.

Referring to FIG. 3, the uniform particle size crushing apparatus for sintering includes a primary screen group, a crushing screen, and a secondary screen Group. ≪ / RTI >

First, the primary screen group includes a primary screen group comprising at least one import storage hopper 101a, 101b adjacent thereto for storing the minute cokes, and an inventory quantity of minute cokes in the import storage hoppers 101a, 101b Belt feeders 103a and 103b for extracting the minute coke from the import storage hoppers 101a and 101b in response to a detection signal from the first sensor unit 102, And a first screen 105 for first dividing the minute coke charged from the belt feeders 103a and 103b into a first quadrant based on the target particle size.

Next, the crushing and secondary screen groups are firstly quadranted from the first screen 105 of the primary screen group, so that the crushed and secondary screen groups are installed to store the minute cokes having a finer granularity above the granularity reference A second sensor part 108 for measuring the stock amount of the partial coke in the selective storage hopper 107 and a second sensor part 108 for measuring the stock amount of the partial coke in the selective storage hopper 107, A two-roll crusher 113 for first crushing the minute coke weighed by the first weigh belt conveyor 111, and a two-roll crusher 113 for crushing the two- A second basis belt conveyor 115 for quantitatively cutting out the partial coke crushed by the two roll crusher 113 and a four roll crusher 117 for secondarily crushing the minute coke crushed by the two roll crusher 113 ), A first weigh belt conveyor (111) and a second weigh belt conveyor (1) A two-roll interval adjusting unit 114 for automatically adjusting the roll interval of the two-roll crusher 113 by comparing the transport amounts of the two rolls of the four rolls 15, 15, And a second screen 119 that secondarily divides the crushed coke passing through the two-roll crusher 113 and the four-roll crusher 117 based on the target particle size. The transport amounts of the first and second weigh belt conveyors 111 and 115 are measured by the third sensor unit 112 and the fourth sensor unit 116, which are capable of measuring the weight of the transported minute coke, .

In addition, the apparatus includes a driving control unit (not shown) for controlling the operation of the primary screen group, the shredding and the secondary screen group. In particular, the control unit receives the detection signals from the sensor units 102, 108, 112, and 116 and receives the belt feeders 103a and 103b, the first basis belt conveyor 111, the two roll interval adjusting unit 114, And controls the operation of the adjustment unit 118.

In the first screen 105, a plurality of rubber bumps formed with 7 mm pastes are built to perform the first quadrant operation. The minute coke particles having an over-sized particle size exceeding the granularity reference are collected in the separator storage hopper 107, The hot water is added by 1 m 3 / h per 10 t / h by the hot water supply unit 123, and the minute coke particles having an under-sized particle size below the granularity standard are added to the component coke storage hopper 120 It will be built.

In the second screen 119, a plurality of rubber bumps having a 7 mm pasture like the first screen 105 are built to perform the second quadrant, and the second screen 119 has an over- The coke particles are transferred to the sorter storage hopper 107, and the minute coke particles having an under-sized particle size below the particle size standard are compacted into the fractional coke storage hopper 120.

The secondary crushing group may further include a third sensor unit 112 for measuring a transport amount of the partial coke conveyed by the first basis belt conveyor 111 and a second sensor unit 112 for transporting the second basis belt conveyor 115 And a fourth sensor unit 116 for measuring the transport amount of the minute coke. The two roll distance adjusting unit 114 and the four roll distance adjusting unit 118 are disposed between the third sensor unit 112 and the fourth sensor unit D2 and D3 of the two-roll crusher 113 and the four-roll crusher 117 based on the deviation of the transport amount of the minute coke measured at the two-roll crusher 113 and the four-

If the deviation of the minute cocos transport amount occurs, the 2-roll distance adjusting unit 114 enlarges the roll distance D1 of the 2-roll crusher 113 by 2 mm within a range of 8 to 30 mm.

If the deviation of the minute cocos transport amount does not occur, the two-roll distance adjusting unit 114 adjusts the roll distance D1 of the two-roll crusher 113 by 2 mm within a range of 8 to 30 mm.

The four roll interval adjusting section 118 adjusts the roll interval D2 of the upper and lower ends of the four roll crusher 117 according to the roll interval D1 of the two roll crusher 113 by the two roll interval adjusting section 114, D3).

Preferably, the 4-roll interval adjusting unit 114 adjusts the upper roll interval D2 of the 4-roll crusher 117 by 2 mm relative to the roll interval D1 of the 2-roll crusher 113 , D1-2 mm) and the lower roll gap D3 of the four roll crusher 117 is adjusted by -3 mm (i.e., D2 - 3 mm) with respect to the upper roll gap D2.

The following [Table 1] shows the subgrains selected from the conventional primary screen group and the crushing and secondary screen groups. Preferably, in one embodiment of the present invention, said roll interval is adjusted with reference to Table 1 below. Referring to Table 1, it can be seen that, for example, the subgrains selected in the first screen group have a deviation of about +/- 2 mm within the range of 0.5 to 0.125 mm. Therefore, in one embodiment of the present invention, it is preferable that the roll gap is set to be 2 mm in the sub-grain size of 8 to 30 mm, or to be adjusted in 2 mm increments.

For reference, the rolls of the two-roll crusher 113 are installed such that a pair of rolls are rotationally driven on a pair of stands. For example, one stand is fixed and the other stand is movable The roll interval is adjusted according to the motor driving in accordance with the adjustment value of the roll interval adjusting unit 114. [ On the other hand, the four-roll crusher 117 can be viewed as having a pair of rolls of the two-roll crusher 113. Hereinafter, specific examples of adjustment of the roll interval will be described in detail.

Hereinafter, a method for controlling the uniform particle size crushing of the sintered partial coke according to the present invention will be described.

4 and 5 are flowcharts for explaining a method of controlling the uniform particle size fracture of the sintered partial coke according to the present invention.

The operation of the primary screen group will be described with reference to FIG.

First, the stock quantity of the minute cokes in the import storage hoppers 101a and 101b storing the minute cokes is measured (S101), and the minute coke stock quantity of the import storage hoppers 101a and 101b is maintained at a predetermined reference value or more The belt feeders 103a and 103b installed below the import storage hoppers 101a and 101b are operated.

Preferably, the belt feeders 103a and 103b installed below the import storage hoppers 101a and 101b are operated in a state where the minute coke stock amount of the import storage hoppers 101a and 101b is maintained at 30% or more.

Next, when the belt feeders 103a and 103b are operated, the minute coke in the import storage hoppers 101a and 101b starts to be discharged and begins to be loaded on the first screen 105. [

The first screen 105 firstly subdivides minute cokes extracted from the import storage hoppers 101a and 101b storing the minute cokes based on the target size (S104).

The first screen 105 stores minute cokes having a sub-granular sub-granularity in the fractional coke storage hopper 120 (S105 to S109), and the minute cokes having a finer granularity larger than the granularity reference are stored in the selective storage hopper 107) (S110 to S111).

Particularly, when the partial coke having a finer particle size above the granularity standard is stored in the selective storage hopper 107, the transportation weight of the partial coke is measured (S106), and the hot water supply unit 123 is operated to add hot water to the divided coke (S107). Accordingly, since the minute coke is subjected to a post-crushing process containing an appropriate amount of water, the effective granular amount can be increased.

In one embodiment, the ratio of the partial coke to the hot water is 1 m3 / h of hot water per 10 t / h of coke added (S108). However, the ratio of the partial coke to the hot water is not limited to this, and it will be apparent that various ratios are changed.

Now, referring to FIG. 5, operation of the shredding and secondary screen groups will be described.

First, the minute coke stock amount in the selective storage hopper 107 in which the minute coke having the finer particle size of not less than the granularity reference (for example, 7 mm or more) is stored is measured (S120).

Then, in the state in which the minute coke stock amount in the selective storage hopper 107 is maintained at a predetermined reference value or more, preferably kept at 30% or more, the minute coke stock amount in the selective storage hopper 107 is increased (S122), and sets the roll intervals of the two-roll crusher 113 and the four-roll crusher 117 in advance (S123).

The initial operation roll interval of the 2 rolls crusher 113 and the 4 rolls crusher 117 is set to 8 mm for the 2 roll crusher 113 and 6 mm for the 4 roll crusher 117, 3 mm.

When the initial operation roll interval setting of the two-roll crusher 113 and the four-roll crusher 117 is completed, the first weigh belt conveyor 111 installed at the lower portion of the selective storage hopper 107 is operated (S124) The transport amount of the minute coke on the first basis belt conveyor 111 is measured (S125).

Next, the target stock amount (set amount) of the minute coke in the selective storage hopper 107 is compared with the measured stock amount (cut-out amount) of the partial coke in the selective storage hopper 107 (S126). In other words, the minute weight of the coke is discharged at the same time as the coke is discharged, and the deviation between the target value and the actual value of the transportation amount is calculated in real time.

As a result of the comparison, if the deviation of the minute coke stock amount does not occur (set amount = cutting amount), the crushing operation of the two-roll crusher 113 is executed (S127).

As a result of comparison, on-site inspections and measures are taken when there is a deviation in minute coke stock quantity.

In one embodiment, the speed of the first weigh belt conveyor 111 can be increased or decreased when a fraction of the coke stock is generated. Such a configuration has a range of upper and lower limits with respect to the speed of the first weigh belt conveyor 111 so as not to cause problems in the field facilities due to excessive setting.

Accordingly, in the present invention, it is possible to control the speed of the first weigh belt conveyor 111 so as to maintain the actual level of the selective storage hopper 107 at the target value, and to control the speed of the first weigh belt conveyor 111, So that the simultaneous operation of the second screen group can be continued.

Next, the partial coke extracted by the first weighing belt conveyor 111 from the selective storage hopper 107 is first crushed to 8 mm or less in the two-roll crusher 113 (S127).

Next, the crushed coke in the two-roll crusher 113 is discharged to the second weigh belt conveyor 115 (S128) and at the same time, the amount of the coke conveyed on the second weft belt conveyor 115 is measured (S129 ).

Next, the transport amount of the minute coke on the first basis belt conveyor 111 and the transport amount of the minute coke on the second basis belt conveyor 115 are compared with each other (S130).

As a result of the comparison, if there is a deviation in the minute coke transport amount, the roll interval of the two-roll crusher 113 is automatically adjusted (S132).

As an example, when a deviation in the amount of bulk carcass is generated, the two-roll interval adjusting unit 114 enlarges and adjusts the roll interval of the two-roll crusher 113 by 2 mm within a range of 8 to 30 mm.

In general, when the secondary transfer amount is less than 1% by weight in comparison with the primary transfer amount, the distance between the two rolls of crusher 113 is enlarged by about 2 mm. At this time, It is possible to know indirectly that the amount of crushing has been reduced.

If there is no deviation in the amount of the minute cocos transport after a predetermined time (10 minutes), the 2-roll interval adjusting unit adjusts the roll interval of the 2-roll crusher by 2 mm per 10 minutes within a range of 8 to 30 mm (S133 and S134).

Preferably, the roll spacing D1 at the upper and lower ends of the four roll crusher 117 is controlled to be automatically adjusted according to the roll spacing of the two roll crusher 113, and the crushing operation is started (S135).

The intervals D2 and D3 of the rolls at the upper and lower ends of the four-roll crusher 117 are automatically adjusted after the roll interval of the two-roll crusher 113 is appropriately adjusted according to the grain size of the minute coke, The upper roll gap D2 is adjusted to -2 mm relative to the roll gap D1 of the two roll crusher 113 in accordance with the roll gap D1 of the crusher 113 and the lower roll gap D3 ) Is automatically adjusted to be about -3 mm with respect to the interval D2 of the upper roll (D2 - 3 mm). However, this step can be omitted if necessary.

Next, the second screen 119 is operated to divide the broken pieces of coke passing through the two-roll crusher 113 and the four-roll crusher 117 into second quadrants based on the target particle size (S136).

The second screen 119 stores minute cokes having a sub-granular sub-granularity in the minute granulated coke storage hopper 120 (S140 and S141) and transfers the minute coke having a finer granularity larger than the granular size reference to the selective storage hopper 107 (S138 and S139).

Particularly, the drying operation by the dry unit 125 (for example, a large blower) is performed together with the quadrant operation on the second screen 119 (S137). Accordingly, it is possible to maintain the stable quality of the sintered ores by improving the productivity by drying the minute coke at a constant moisture value at the time of use.

In the second screen 119, a plurality of rubber bumps having a 7 mm pasture like the first screen 105 are built to perform the second quadrant, and the second screen 119 has an over- The coke particles are transferred to the sorter storage hopper 107, and the minute coke particles having an under-sized particle size below the particle size standard are compacted into the fractional coke storage hopper 120.

On the other hand, during the separation operation of the primary screen group, the crushing and the secondary screen group, adverse effects may occur in the production of the sintered ores due to the variation in particle size on the first and second screens. The level and the actual value of the selective storage hopper are compared with each other to increase or decrease the speed of the first weigh belt conveyor when a deviation occurs.

As described above, the present invention provides a device capable of crushing minute coke, which is a fuel used in sintering operation, at a uniform particle size regardless of initial particle size change, and a control method thereof. In addition, it is possible to increase the effective granulometry after crushing the minute cokes containing proper moisture, and to dry the granular cokes at a constant moisture value at the time of use, thereby maintaining the stable quality of the sintered ores and improving the productivity.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the following claims.

120: Characteristic coke storage hopper 101a, 101b: Import storage hopper
103a, 103b: belt feeder 105: first screen
107: selective storage hopper 111: first weigh belt conveyor
113: 2 roll crusher 114: 2 roll interval adjuster
115: second basis weight belt conveyer 117: 4 roll crusher
118: 4 roll interval adjusting unit 119: second screen

Claims (15)

A homogeneous size crushing apparatus for sintering a two-component coke for sintering, which comprises crushing a sintered coke to a homogeneous particle size and supplying it to a coke storing hopper,
A primary screen group consisting of a first screen for first dividing a minute coke charged from one or more import storage hoppers which are installed adjacent thereto to store the minute coke, based on a target particle size;
A screening hopper installed to store minute cokes that are first quartzed from the first screen of the primary screen group and have a finer particle size greater than or equal to the granularity standard, a two-roll crusher for first crushing the minute cokes in the selective storage hopper A four-roll crusher for crushing the two-roll crushed secondary coke by the two-roll crusher, a two-roll interval adjusting unit for automatically adjusting the roll interval of the two-roll crusher by comparing the transport amounts of the two- A four-roll interval adjusting section for automatically adjusting the roll interval of the four-roll crusher by comparing the transport amounts of the two-roll crushers, the two-roll crusher and the four-roll crusher, A shredding and secondary screen group consisting of a second screen; And
And a control unit for controlling the operation of the primary screen group and the crushing and secondary screen groups. The method according to claim 1,
Wherein the primary screen group further comprises a first sensor unit for measuring an inventory of minute coke in the import storage hopper and a belt feeder for extracting minute coke from the import storage hopper in response to the detection signal of the first sensor unit Wherein the sintering step is carried out in the same manner as in the first step. The method according to claim 1,
Wherein the crushing and secondary screen groups comprise a second sensor section for measuring an inventory of minute coke in the selective storage hopper and a second sensor section for measuring the stock of minute coke in the selective storage hopper, Further comprising a second weigh belt conveyor for weighing and discharging the partially cokes crushed in the two-roll crusher, wherein the two-roll distance adjuster adjusts the conveyance amount of the first weigh belt conveyor and the second weigh belt conveyor And the roll interval of the two-roll crusher is automatically adjusted in comparison with that of the two-roll crusher. The method according to claim 1,
The second crushing group comprises a third sensor unit for measuring a transport amount of the minute coke conveyed by the first basis belt conveyor and a fourth sensor unit for measuring the transport amount of the minute coke conveyed by the second basis belt conveyor Further,
Wherein the two-roll interval adjusting unit and the four-roll interval adjusting unit adjust the roll intervals of the two-roll crusher and the four-roll crusher based on the deviation of the transport amount of the minute coke measured by the third sensor unit and the fourth sensor unit A uniform particle size crushing apparatus for sintering minute cokes. 5. The method of claim 4,
Wherein the 4-roll interval adjusting unit automatically adjusts the roll interval at the upper and lower ends of the 4-roll crusher according to the roll interval of the 2-roll crusher. The method according to claim 1,
Wherein the secondary crushing group is further provided on top of the selective storage hopper and further comprises a hot water supply for adding hot water to the partial coke in the selective storage hopper. The method according to claim 1,
Wherein the secondary crushing group further comprises a drying unit installed on one side of the second screen to dry the minute coke divided in the second screen. A method for controlling a uniform particle size crushing method for sintering, comprising the steps of: crushing a sintering minute coke to a homogeneous particle size and supplying the homogeneous minute coke to a property minute coke storage hopper,
The minute coke extracted from the imported storage hopper storing the minute coke is quadrified in the first quartile based on the target size, and the minute coke having the subdivided granularity lower than the granule size is stored as the property minute coke storage hopper, Storing the fractional coke having the coke as a selective storage hopper;
The one-piece crushed coke was first crushed by the two-roll crusher from the selective storage hopper, and the first-crushed crushed coke was weighed by the second weigh belt conveyor in the four-roll crusher. Crushing;
And a step of automatically adjusting the roll interval of the two-roll crusher when the minute coke transport amount is varied by comparing the minute coke transported amount before the two-roll crusher is charged with the minute coke transported amount discharged after being input to the two-roll crusher Characterized in that the method for controlling the uniform particle size crushing of the sintered coke is as follows. 9. The method of claim 8,
The two-roll crusher and the four-roll crusher were crushed and crushed, and the crushed coke was subdivided into quadrants based on the target granularity. Subsequently, the coke having sub-granular grains smaller than the granular granularity was stored as a fractional coke storage hopper, Characterized in that the partial coke having a particle size is stored in a selective storage hopper. 9. The method of claim 8,
Further comprising the step of automatically adjusting the roll interval at the upper and lower ends of the four-roll crusher according to the roll interval of the two-roll crusher. 9. The method of claim 8,
Measuring an inventory of minute cokes in an import storage hopper storing the minute cokes; And
Further comprising the step of measuring an inventory of minute coke in said selective storage hopper. 10. The method of claim 9,
Wherein the target stock amount of the minute coke in the selective storage hopper is compared with the measured stock amount of the minute coke in the selective storage hopper to increase or decrease the speed of the first weigh belt conveyor upon occurrence of a deviation in the minute coke stock amount, A method for controlling the homogeneous size crushing of minute coke. 9. The method of claim 8,
Further comprising the step of adding hot water to the partial coke having a finer particle size above the granularity standard stored in the selective storage hopper. 14. The method of claim 13,
Wherein the ratio of the minute cokes to the hot water is 1 m 3 / h of hot water per 10 t / h minute coke. 10. The method of claim 9,
Further comprising the step of secondarily quenching the crushed coke passing through the two-roll crusher and the four-roll crusher based on the target particle size, thereby drying the coke to be stored in the selective storage hopper Method for controlling uniform particle size fracture.

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