JP2741219B2 - Raw material cutting control device for sintering equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a raw material cutout control device in a sintering facility.

[Prior art] A sintering facility distributes one sintering material pile from a blending yard to a plurality of blending or (BO) bins, and the sintering material cut out by the plurality of blending or bins. It is guided to a sintering machine and sintered.

In such a conventional sintering equipment, the total weight of one sintering material pile distributed to the plurality of blending or bins is divided into n equal to the number n of the bins. Raw material was cut out. The cut-out raw material is conveyed by a conveyor and supplied to a surge hopper, and the raw material is supplied to the sintering machine from the surge hopper at a predetermined supply speed.

[Problems to be Solved by the Invention] However, in a system having such a blending yard and supplying a sintering raw material by a blending or bin, if the pile in the blending yard changes,
The chemical composition of BO changes. For example, the levels in a blending or bin with 8 to 10 bins are not necessarily at the same level, so the pile supplied from the blending yard changes to the next pile, and when a pile change occurs, the same amount is cut out. It was inevitable that the pile supplied to the sintering machine would be mixed as long as the sintering was performed in each bin. Therefore, the pile change part of one pile and another pile is tracked,
It is important to keep the blending or piles stored in each raw material bin on the sintering facility side mixed and not to cut out to ensure the quality of the sintered ore.

Therefore, a technical problem of the present invention is to provide a raw material cutout control device in a sintering facility that can improve the quality and stability of a sinter by matching the calculated compounding ratio with the actual compounding ratio.

[Means for Solving the Problems] According to the present invention, one sintering material pile from a blending yard is distributed to a plurality of blending ores, and the sintering material cut out by the plurality of blending ores. A plurality of weight detecting means provided in each of the plurality of blending OR bins to detect the weight of the sintering raw material in each of the blending OR bins. Distribution end detecting means for detecting a point at which distribution of the sintering material pile to the plurality of blending or bins is completed and outputting a distribution end signal; and a sintering material per unit time required for the sintering machine. A control unit for outputting an instruction signal indicating the weight; and a total weight of the sintering raw materials contained in the plurality of blending OR bins and a finger based on the instruction signal. The ratio of the weight of the raw material contained in each blending ore bin to the total weight based on the indicated weight of the sintering raw material per unit time and the detected weight of the plurality of weight detection means, and A cutting set value for each blending OR bin, and calculating means for instructing each of the plurality of blending OR bins, respectively, and a calculating means for instructing each of the plurality of blending OR bins. A device is obtained.

[Operation] The operation of the present invention will be described.

In the raw material cutout control device in the sintering equipment of the present invention, one sintering raw material pile from the blending yard is distributed to a plurality of blending ores. The distribution end is detected by the distribution end detecting means, and a distribution end signal is output.

Also, the weight of the sintering raw material in the bin is always detected by the weight detecting means provided in each of the plurality of blending or bins. The control section sets the weight of the sintering raw material per unit time necessary for the sintering machine, and outputs an instruction signal from the control section. The instruction signal is received by the arithmetic unit, and the arithmetic means calculates the total weight of the sintering raw materials contained in the plurality of blending or bins, the weight of the sintering raw material per unit time indicated by the instruction signal, and the plurality of sintering raw materials. The cutout set value of each blending or bin is calculated based on the weight detected by the weight detecting means. The calculated multiple cutout setting values are
A corresponding plurality of blending or bins are instructed respectively. The cutout set value is obtained by dividing the detected weight of the weight detector provided in the corresponding blending or bin by the total weight, and adding the weight of the sintering raw material per unit time indicated by the instruction signal to the value obtained by dividing the weight by the total weight. It is a value obtained by multiplying. Therefore, when cutting is performed from the blending or bin, each bin can finish cutting of one sintering raw material at the same time, and do not cut by mixing different piles as described above.

Example An example of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a raw material cutout control device in a sintering facility according to one embodiment of the present invention.

In this figure, a sintering facility supplies each of a plurality of sintering material piles at intervals with a blending yard 1 for supplying.
And a blending ore bin 2 for containing and cutting one pile, a sintering machine 3 for sintering the supplied raw material, and a surge hopper for adjusting the supply of the cut out raw material to the sintering machine 3. And 4. Further, the sintering equipment includes a first conveyor 5 having a two-stage structure for transporting the pile supplied from the blending yard 1 to the inlet of the blending ore bin 2, and a surge hopper 4 from the blending ore bin 2.
And a second conveyor 6 having a two-stage structure for transporting to a charging port.

In such a sintering facility, the raw material cutout control device includes a weight detection unit 7 provided on each of the n blending or bins 2, a distribution end detection unit 8 disposed on the first conveyor 5, and a control unit. 9 and an operation unit 10.

When the supply of one pile of sintering raw material from the blending yard 1 is completed, a pile change signal 16 is output from the blending yard 1 to the control unit 9. Distribution end detection unit 8
Detects when distribution of one sintering material pile from the blending yard 1 to a plurality of blending OR bins 2 is completed, for example, optically detects the end (cut) of one sintering material pile, The distribution end signal 11 is output.

After receiving the pile change signal and receiving the distribution end signal 11, the control unit 9 outputs an instruction signal 15 indicating the weight F _{BO of the} sintering raw material per unit time required for the sintering machine 3.

When receiving the instruction signal 15, the calculation unit 10 refers to the detected weights (Wi) 13 of the plurality of weight detection units 7 and calculates the total weight of the sintering raw material contained in the plurality of blending OR bins 2. (ΣWi) and each blending or bin calculated based on the total weight, the weight F _{BO of the} sintering raw material per unit time indicated by the instruction signal 15 and the detected weights Wi of the plurality of weight detection units. Are respectively instructed to the feeder 12 of the corresponding blending or bin 2.

This cutout set value Fi is determined by the detected weights W1 to Wn of the weight detector 7 provided in the corresponding blending or bin.
(N is the number of the blending or bin)
The value obtained by multiplying the weight F _{BO of the} sintering raw material per unit time indicated by the instruction signal 12 from the control unit 9 with the value Wi / ΣWi obtained by dividing, ie, Fi = It is represented by F _BO × Wi × ΣWi.

Where F _BO (T / H) is the weight of the sintering raw material per required unit time, Fi (T / H) is the cut-out set value of the i-th blending ore bin, and Wi (T) is the i-th blending ore. Indicates the detected weight of the bottle. Thus, the set value Fi
By continuing to cut out from the blending or bin, the same kind of pile sintering material can be cut out at the same point in each bin and reach the lower end of each bin. Furthermore, the mixture with the pile after cutting is almost eliminated. Therefore, based on the chemical composition of the first pile and the second pile, there is no difference between the calculation of the mixing ratio and the actual mixing, which is the quality target of the sinter.

In the above embodiment, the total weight of the sintering raw materials accommodated in the plurality of blending OR bins 2 is obtained by calculating (adding) the detected weights (Wi) of the plurality of weight detection units 7.
In addition to this means, a conveyor case is installed on each of the conveyor 5 for supplying piles to the blending ore bin 2 and the conveyor 6 for carrying out the raw material cut out from the blending ore bin 2, and the unloading weight is subtracted from the supply weight. The total weight in a plurality of blending OR bins 2 can also be obtained.

[Effects of the Invention] As described above, according to the present invention, the calculated compounding ratio matches the actual compounding ratio, and the basicity of the sinter, SiO ₂ , FeO, RDI
Thus, it is possible to provide a raw material cutout control device in a sintering facility in which the quality is improved and stability is achieved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a raw material cutout control device in a sintering facility according to one embodiment of the present invention. In the figure, 1 is a blending yard, 2 is a blending ore bin, 3 is a sintering machine, 4 is a surge hopper, 5 is a first conveyor, 6 is a second conveyor, 7 is a weight detector, and 8 is a distribution end detector. , 9 is a control unit, 10 is a calculation unit, 11 is a distribution end detection signal, 12 is a feeder, 13 is a weight detection signal, 14 is a cutout set value, 15 is an instruction signal, and 16 is a pile change signal.

Claims (1)

(57) [Claims] 1. A sintering raw material pile from a blending yard is distributed to a plurality of blending orbs, and the sintering raw material cut out by the plurality of blending orbs is led to a sintering machine and sintered. A plurality of weight detecting means provided in each of the plurality of blending orbs to detect the weight of the sintering raw material in each of the blending orbs; and the plurality of blending orbs of the one sintering raw material pile. Distribution end detecting means for detecting a point in time when the distribution to the sintering is completed and outputting a distribution end signal; and a control unit for outputting an instruction signal indicating a required weight of the sintering raw material per unit time for the sintering machine. The total weight of the sintering raw materials contained in the plurality of blending OR bins and the weight of the sintering raw materials per unit time indicated by the instruction signal. Based on the amount and the weight detected by the plurality of weight detecting means, the ratio of the weight of the raw material contained in each blending ore bin to the total weight and the weight of the sintering raw material per unit time are integrated. And a calculating means for determining a cutting set value of each blending orbin and instructing each of the plurality of blending orbins.