CN104911291A - Blast furnace multiple-material preparation system and method in concentrated weighing mode - Google Patents
Blast furnace multiple-material preparation system and method in concentrated weighing mode Download PDFInfo
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- CN104911291A CN104911291A CN201510314783.5A CN201510314783A CN104911291A CN 104911291 A CN104911291 A CN 104911291A CN 201510314783 A CN201510314783 A CN 201510314783A CN 104911291 A CN104911291 A CN 104911291A
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Abstract
The invention provides a blast furnace multiple-material preparation system and method in a concentrated weighing mode. The system comprises a conveyor belt; a plurality of ore bins are orderly arranged above the conveyor belt in the length direction; feeders and ore vibrating screens are orderly arranged up and down between the ore bins and the conveyor belt; the feeders and the ore vibrating screens are as many as the ore bins and correspond to the ore bins one to one; an ore concentrated weighing hopper is arranged under the tail end of the conveyor belt; the conveyor belt is connected with a conveyor belt motor. The material preparation system is capable of realizing concentrated weighing preparation of a plurality of types of ores, and also capable of guaranteeing the weighing accuracy of the ores, and therefore, the distribution requirements of complex blast furnace charge are met and the production efficiency and production quality of the blast furnace are effectively improved; besides, the system is high in automation degree; the labor intensity of the operating personnel is low; meanwhile, the system has relatively high safety, and the problems of material accumulation, electrical apparatus overload and the like can be avoided.
Description
Technical field
The invention belongs to ore weighing technology field, the blast furnace multi-material related under a kind of concentrated weighing mode is got the raw materials ready system and method.
Background technology
In blast furnace under ore deposit groove concentrates weighing mode, be generally made up of equipment such as multiple ore storage bin and corresponding material feeder, vibratory screening apparatus, rotary conveyor, scale hoopers under groove, carried out the screening of ore and weighed.The coke that coke bin, ore bin disposing go out from groove, ore are transported in concentrated scale hooper by main haul belt, be transported to furnace roof, carry out cloth and enter stove by truck according to the batching material list program of setting.In recent years due to ore resource shortage problem, the iron ore kind that ironmaking enterprise uses gets more and more, and quality is different, for wine steel iron work, only pellet materials in 2011 just reach 13 kinds, and lump ore materials reach 7 kinds, and concentrate materials reach 8 kinds, for making blast furnace adapt to complicated crude fuel, after needing various mineral aggregate fully to mix, load blast furnace.
But adopt traditional program material list batching after concentrating the blast furnace under weighing mode to go into operation, the same time opens a scale hooper blowing and measures always.No matter be 4 car systems or 6 car systems, 2-3 car ore deposit is set at most in each program of material list, multiple ore deposit all cannot be set in a program, want polygamy material kind to arrange separately in other program, post operation personnel need in picture, manually to change material kind frequently, not only add the labour intensity of post work, and change material also may affect production not in time, nonetheless per car material is all single mineral, a various ore deposit point kind loads in batches, after uneven for quality mineral fully can not being mixed again cloth in burner hearth, it not the furnace charge after mixing, cannot provide potential of hydrogen rational crude fuel for blast furnace, have a strong impact on conditions of blast furnace and every economic and technical norms, such system, proportioning accuracy and cloth efficiency far can not meet the requirement of production.
Although operator skilled aborning can adopt manual mode to carry out multi-material mixing and get the raw materials ready, and operator must calculate the metering of each material kind, examine in melting process.So, first: the time of getting the raw materials ready will be increased largely; Second: the accuracy that cannot ensure each material kind proportioning; 3rd: the labour intensity virtually adding operator.Efficiency far of getting the raw materials ready like this can not meet the requirement of blast-furnace smelting.
Summary of the invention
The object of the invention is to for prior art Problems existing, provide a kind of weigh efficiency high and blast furnace multi-material under the concentrated weighing mode that tolerance range is higher is got the raw materials ready system.
Another object of the present invention is to provide the blast furnace multi-material stock method under a kind of concentrated weighing mode.
For this reason, the present invention adopts following technical scheme:
Blast furnace multi-material under a kind of concentrated weighing mode is got the raw materials ready system, comprise belt conveyor, the top of described belt conveyor is provided with some ore bins along its length successively, feeding machine and ore vibrating sieve is provided with successively up and down between described ore bin and belt conveyor, described feeding machine and one_to_one corresponding identical with ore bin quantity with ore vibrating sieve, the below of described belt conveyor end is provided with ore and concentrates scale hooper, and described belt conveyor is connected with conveying belt motor.
Further, the side of described belt conveyor end is provided with coke bin, and the below of described coke bin is provided with coke vibratory screening apparatus successively and coke concentrates scale hooper.
Further, described system also comprises upper computer and PLC, and described PLC concentrates scale hooper to be connected with upper computer, feeding machine, ore vibrating sieve, conveying belt motor and ore respectively.
A blast furnace multi-material stock method under concentrated weighing mode, adopts above-mentioned system of getting the raw materials ready, comprises the steps:
(1) by described ore bin corresponding different ore of expecting to plant respectively, when weighing a certain material kind ore, this ore is added ore bin corresponding with it, ore is sent into ore vibrating sieve through feeding machine and is sieved, the ore meeting granularity requirements falls into belt conveyor surface and sends into ore by belt conveyor concentrates scale hooper to weigh, upper computer obtains the weighing value of this ore in real time by PLC, the feeding machine corresponding with this ore bin is controlled by upper computer and PLC and ore vibrating sieve stops when weighing value meets the requirements, then the weighing of next material kind is carried out, the concentrated weighing of different material kind of ore is carried out with this,
(2), when weighing coke, coke is directly added coke bin, and coke is after coke vibratory screening apparatus sieves, and the coke meeting granularity requirements falls into coke scale hooper and weighs separately;
(3), when weighing multi-material ore, the ore for difference material kind sets the pre-full value Mi of a weighing respectively, when the setting weighing value of the ore that will weigh be greater than its weigh pre-full value Mi time, adopt pre-control mode of completely measuring to carry out Weighting and Controlling; When the setting weighing value of the ore that will weigh be less than or equal to its weigh pre-full value Mi time, adopt time controling mode to carry out Weighting and Controlling;
(4) described pre-control mode of completely measuring is specially: wherein in a kind of ore weighing process, when this ore setting weighing value and the difference of actual weighing value be less than weigh pre-full value Mi time, the feeding machine corresponding with this ore is controlled and ore vibrating sieve stops by upper computer and PLC, then carry out the weighing of next material kind, and the weighing order that material is planted is unrestricted;
(5) mode of described time controling is specially: according to the setting weighing value size setting vibratory screening apparatus start-stop time corresponding with this material kind ore and vibratory screening apparatus operating time Ti, after this ore enters corresponding ore bin, after the working hour of vibratory screening apparatus reaches setting operating time Ti, the feeding machine corresponding with this ore is controlled and ore vibrating sieve stops by upper computer and PLC, then carry out the weighing of next material kind, the weighing order of this control mode blanking kind is unrestricted equally.
When measuring the material heavily weighing value of each material kind, must section metering be adopted, otherwise the accuracy of each material kind weighing value cannot be ensured.Meanwhile, the time difference that each vibratory screening apparatus on same belt conveyor opens, stops, the accuracy of speed of getting the raw materials ready and each material kind weighing value will directly be affected.Be analyzed as follows:
(1) if first start the vibratory screening apparatus near concentrating scale hooper, when weighing value reaches set(ting)value, restarting next vibratory screening apparatus, speed of impact being got the raw materials ready, increasing and getting the raw materials ready the time, and then affecting charging of blast furnace;
(2) if first start vibratory screening apparatus far away, when weighing value reaches set(ting)value, restart the next one to get the raw materials ready vibratory screening apparatus, same like this speed that impact is got the raw materials ready;
(3) if first start the vibratory screening apparatus near scale hooper, restart the next one when not waiting weighing value to reach set(ting)value to get the raw materials ready vibratory screening apparatus, although do not affect the speed of getting the raw materials ready like this, but the requirement that compound material kind order can arbitrarily set cannot be met, and the material kind granularity near scale hooper vibratory screening apparatus can be caused little, easily leak the disadvantage of material;
(4) if first start from the vibratory screening apparatus away from scale hooper, restart the next one when not waiting weighing value to reach set(ting)value to get the raw materials ready vibratory screening apparatus, the accumulation that different material is planted can be caused like this, cannot weigh the title value of various material kind, more cannot ensure the accuracy of each material kind weighing value, and belt binder may be caused, and then the accident of flash or electric equipment overload etc.
And after employing stock method provided by the invention, the weighing of multiple material kind ore not by order restriction, and can meet the accuracy of weighing result preferably, the problems such as windrow are less likely to occur.
To sum up, beneficial effect of the present invention is: the concentrated weighing that can realize multi-material ore is got the raw materials ready, and can ensure the weighing precision of ore, meets the cloth requirement of the complicated furnace charge of blast furnace, effectively improves production efficiency and the quality of production of blast furnace; And present system level of automation is high, labor intensity of operating staff is low, also has higher security simultaneously, and the problem such as windrow and electric equipment overload is less likely to occur.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention is got the raw materials ready the structural representation of system;
In figure, 1-upper computer, 2-PLC controller, 3-ore bin, 4-feeding machine, 5-ore vibrating sieve, 6-belt conveyor, 7-conveying belt motor, 8-ore concentrates scale hooper, 9-coke bin, and 10-coke vibratory screening apparatus, 11-coke concentrates scale hooper.
Embodiment
As shown in Figure 1, blast furnace multi-material under a kind of concentrated weighing mode is got the raw materials ready system, comprise symmetrically arranged two groups of systems of getting the raw materials ready, for left-sided system in scheming, comprise belt conveyor 6, the top of belt conveyor 6 is provided with four ore bins 3 along its length successively, feeding machine 4 and ore vibrating sieve 5 is provided with up and down successively between ore bin 3 and belt conveyor 6, feeding machine 4 and one_to_one corresponding identical with the quantity of ore bin 3 with ore vibrating sieve 5, the below of belt conveyor 6 end is provided with ore and concentrates scale hooper 8, and belt conveyor 6 is connected with conveying belt motor 7; The side of belt conveyor 6 end is provided with coke bin 9, and the below of coke bin 9 is provided with coke vibratory screening apparatus 10 successively and coke concentrates scale hooper 11; Described system also comprises upper computer 1 and PLC 2, and PLC 2 concentrates scale hooper 8 to be connected with upper computer 1, feeding machine 4, ore vibrating sieve 5, conveying belt motor 7 and ore respectively.
A blast furnace multi-material stock method under concentrated weighing mode, adopts above-mentioned system of getting the raw materials ready, comprises the steps:
(1) by described ore bin corresponding different ore of expecting to plant respectively, when weighing a certain material kind ore, this ore is added ore bin corresponding with it, ore is sent into ore vibrating sieve through feeding machine and is sieved, the ore meeting granularity requirements falls into belt conveyor surface and sends into ore by belt conveyor concentrates scale hooper to weigh, upper computer obtains the weighing value of ore in real time by PLC, the feeding machine corresponding with this ore bin is controlled by upper computer and PLC and ore vibrating sieve stops when weighing value meets the requirements, then the weighing of next material kind is carried out, the concentrated weighing of different material kind of ore is carried out with this,
(2), when weighing coke, coke is directly added coke bin, and coke is after coke vibratory screening apparatus sieves, and the coke meeting granularity requirements falls into coke scale hooper and weighs separately;
(3), when weighing multi-material ore, the ore for difference material kind sets the pre-full value Mi of a weighing respectively, when the setting weighing value of the ore that will weigh be greater than its weigh pre-full value Mi time, adopt pre-control mode of completely measuring to carry out Weighting and Controlling; When the setting weighing value of the ore that will weigh be less than or equal to its weigh pre-full value Mi time, adopt time controling mode to carry out Weighting and Controlling;
(4) described pre-control mode of completely measuring is specially: wherein in a kind of ore weighing process, when this ore setting weighing value and the difference of actual weighing value be less than weigh pre-full value Mi time, the feeding machine corresponding with this ore is controlled and ore vibrating sieve stops by upper computer and PLC, then carry out the weighing of next material kind, and the weighing order that material is planted is unrestricted;
(5) mode of described time controling is specially: set the size of the vibratory screening apparatus start-stop time corresponding from this material kind ore and vibratory screening apparatus operating time Ti(Ti according to setting weighing value size according to setting weighing value and the different concrete setting of expecting to plant), after this ore enters corresponding ore bin, after the working hour of vibratory screening apparatus reaches setting operating time Ti, the feeding machine corresponding with this ore is controlled and ore vibrating sieve stops by upper computer and PLC, then carry out the weighing of next material kind, the weighing order of this control mode blanking kind is unrestricted equally.
Claims (4)
1. the blast furnace multi-material under a concentrated weighing mode is got the raw materials ready system, it is characterized in that, comprise belt conveyor, the top of described belt conveyor is provided with some ore bins along its length successively, feeding machine and ore vibrating sieve is provided with successively up and down between described ore bin and belt conveyor, described feeding machine and one_to_one corresponding identical with ore bin quantity with ore vibrating sieve, the below of described belt conveyor end is provided with ore and concentrates scale hooper, and described belt conveyor is connected with conveying belt motor.
2. the blast furnace multi-material under a kind of concentrated weighing mode according to claim 1 is got the raw materials ready system, and it is characterized in that, the side of described belt conveyor end is provided with coke bin, and the below of described coke bin is provided with coke vibratory screening apparatus successively and coke concentrates scale hooper.
3. the blast furnace multi-material under a kind of concentrated weighing mode according to claim 1 is got the raw materials ready system, it is characterized in that, described system also comprises upper computer and PLC, and described PLC concentrates scale hooper to be connected with upper computer, feeding machine, ore vibrating sieve, conveying belt motor and ore respectively.
4. the blast furnace multi-material stock method under concentrated weighing mode, is characterized in that, adopts system of getting the raw materials ready according to claim 1, comprises the steps:
(1) by described ore bin corresponding different ore of expecting to plant respectively, when weighing a certain material kind ore, this ore is added ore bin corresponding with it, ore is sent into ore vibrating sieve through feeding machine and is sieved, the ore meeting granularity requirements falls into belt conveyor surface and sends into ore by belt conveyor concentrates scale hooper to weigh, upper computer obtains the weighing value of ore in real time by PLC, the feeding machine corresponding with this ore bin is controlled by upper computer and PLC and ore vibrating sieve stops when weighing value meets the requirements, then the weighing of next material kind is carried out, the concentrated weighing of different material kind of ore is carried out with this,
(2), when weighing multi-material ore, the ore for difference material kind sets the pre-full value Mi of a weighing respectively, when the setting weighing value of the ore that will weigh be greater than its weigh pre-full value Mi time, adopt pre-control mode of completely measuring to carry out Weighting and Controlling; When the setting weighing value of the ore that will weigh be less than or equal to its weigh pre-full value Mi time, adopt time controling mode to carry out Weighting and Controlling;
(3) described pre-control mode of completely measuring is specially: wherein in a kind of ore weighing process, when this ore setting weighing value and the difference of actual weighing value be less than weigh pre-full value Mi time, the feeding machine corresponding with this ore is controlled and ore vibrating sieve stops by upper computer and PLC, then carry out the weighing of next material kind, and the weighing order that material is planted is unrestricted;
(4) mode of described time controling is specially: according to the setting weighing value size setting vibratory screening apparatus start-stop time corresponding with this material kind ore and vibratory screening apparatus operating time Ti, after this ore enters corresponding ore bin, after the working hour of vibratory screening apparatus reaches setting operating time Ti, the feeding machine corresponding with this ore is controlled and ore vibrating sieve stops by upper computer and PLC, then carry out the weighing of next material kind, the weighing order of this control mode blanking kind is unrestricted equally.
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| CN108254216A (en) * | 2018-03-15 | 2018-07-06 | 攀钢集团西昌钢钒有限公司 | Mineral aggregate sampling method, device and the readable storage medium storing program for executing of a kind of blast furnace |
| CN108486299A (en) * | 2018-04-04 | 2018-09-04 | 陈婷 | A kind of metallurgical equipment ingredient conveyor convenient for auto feed |
| CN110607408A (en) * | 2019-09-19 | 2019-12-24 | 大冶特殊钢有限公司 | Waste steel material adding device and adding method for blast furnace |
| CN110684876A (en) * | 2019-11-20 | 2020-01-14 | 山东钢铁股份有限公司 | Charging system and control method thereof |
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| CN115341055A (en) * | 2022-08-19 | 2022-11-15 | 马鞍山钢铁股份有限公司 | Automatic weighing and discharging method under blast furnace material shortage preventing tank |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108254216A (en) * | 2018-03-15 | 2018-07-06 | 攀钢集团西昌钢钒有限公司 | Mineral aggregate sampling method, device and the readable storage medium storing program for executing of a kind of blast furnace |
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| CN108486299A (en) * | 2018-04-04 | 2018-09-04 | 陈婷 | A kind of metallurgical equipment ingredient conveyor convenient for auto feed |
| CN110607408A (en) * | 2019-09-19 | 2019-12-24 | 大冶特殊钢有限公司 | Waste steel material adding device and adding method for blast furnace |
| CN110684876A (en) * | 2019-11-20 | 2020-01-14 | 山东钢铁股份有限公司 | Charging system and control method thereof |
| CN111020085A (en) * | 2020-01-03 | 2020-04-17 | 中冶赛迪工程技术股份有限公司 | Feeding unit with parallel under-tank screening and discharging, ore coke tank feeding system and method |
| CN111020085B (en) * | 2020-01-03 | 2024-02-06 | 中冶赛迪工程技术股份有限公司 | Feeding unit with parallel under-tank screening and discharging, ore coke tank feeding system and method |
| CN115341055A (en) * | 2022-08-19 | 2022-11-15 | 马鞍山钢铁股份有限公司 | Automatic weighing and discharging method under blast furnace material shortage preventing tank |
| CN115341055B (en) * | 2022-08-19 | 2023-07-18 | 马鞍山钢铁股份有限公司 | Automatic under-tank weighing and discharging method for preventing blast furnace from being deficient |
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Application publication date: 20150916 |