CN103898271B - A kind of feed bin automatic weighing control method of converter alloy production system - Google Patents
A kind of feed bin automatic weighing control method of converter alloy production system Download PDFInfo
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- CN103898271B CN103898271B CN201210572919.9A CN201210572919A CN103898271B CN 103898271 B CN103898271 B CN 103898271B CN 201210572919 A CN201210572919 A CN 201210572919A CN 103898271 B CN103898271 B CN 103898271B
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Abstract
A kind of feed bin automatic weighing control method of converter alloy production system, its concrete steps are as described below: 1) add the trade mark and addition according to pre-determined alloy, set up control benchmark to be respectively, set up duration of blast benchmark by time system and set up blowing oxygen quantity benchmark by oxygen amount system; 2) distinguish and weigh the time period according to duration of blast benchmark and blowing oxygen quantity benchmark and be, the weighing time period in the weighing time period in converting process and tapping; 3) according to the data of the weighing time period in the converting process obtained and the data of the weighing time period in tapping, these two data are carried out weighing time period predesigne, and calculation result is carried out manual confirmation and revision; 4) by calculation result input control weigh bridge and scale hooper, automatic weighing is carried out.The present invention can weigh the aluminum series alloy of complex process in the requirement of interior all alloy automatic weighings, reduces error, improves the integral level of converter alloying operation, is applicable to various alloy converter and weighs field.
Description
Technical field
The present invention relates to a kind of production operation control method, particularly relate to a kind of feed bin automatic weighing control method of the converter alloy production system be applied in field of steel production.
Background technology
At present, each steel production enterprise converter alloy production system generally have 12 to 20 feed bins, the corresponding weigh bridge of every 3 to 4 feed bins, alloy is delivered to scale hooper from feed bin through vibro-feeder, be delivered to middle hopper through vibratory feeder after being weighed by weigh bridge, cut out in ladle during converter tapping.
The alloy feed bin of converter alloy production system under prior art and the control of weighing machine, more advanced converter Alloy Steel Plant adopts artificial or semiautomatic fashion usually both at home and abroad, alloy designations, weighing value, weighing moment are set on PLC by operative employee, artificial directly control.
But execute-in-place workman find in actual application, there is following defect in the weighing mode that is artificial or semiautomatic fashion under prior art:
1, artificial or semi-automatic weighing mode wastes time and energy, and substantially prolongs the waiting time;
2, inconsistent needed for each converter, artificial or be semi-automaticly difficult to the converter alloy production system tackling different demand;
3, weigh because operator's level is different, individual operations differs greatly, and result in weighing data inaccurate, directly affects carrying out smoothly of subsequent production.
In sum, now need a kind of novel weighing technique, can fast and effeciently weigh the feed bin of converter alloy production system, and it is reliably controlled to weigh benchmark, and the individual difference owing to bringing due to operator's level difference can be eliminated.
Summary of the invention
In order to the artificial or semiautomatic fashion solving the converter alloy production system under prior art weighs all drawbacks of mode, the invention provides a kind of feed bin automatic weighing control method of converter alloy production system, adopt duration of blast benchmark and the accurate control techniques of oxygen amount benchmark double-basis, alloy weighs sequence list control techniques and the virtual feed bin control techniques of aluminum series alloy automatic weighing, achieve converter alloy and weigh full automatic control, system is according to the practical situation formation control decision-making of every stove steel, automatically Weighting and Controlling pattern is produced, and control the execution of alloy weigh bridge, change converter alloy and weigh the traditional method adopting manual or semi-automatic operation, thus by alloying regularized operation, stdn, automatization, improve the individual state of the art deviation of operator, be conducive to the integral level improving the operation of converter alloying, stablize converter producing.Concrete steps of the present invention are as described below:
A feed bin automatic weighing control method for converter alloy production system, comprise and determine that alloy adds the trade mark and addition thereof in advance, its concrete steps are as follows:
1) add the trade mark and addition according to pre-determined alloy, set up and control benchmark, described control benchmark is respectively, and sets up duration of blast benchmark and set up blowing oxygen quantity benchmark by oxygen amount system by time system;
2) also distinguish the weighing time period according to the duration of blast benchmark in step 1 and blowing oxygen quantity benchmark, the described weighing time period is, the weighing time period in converting process and the weighing time period in tapping;
3) according to the data of the weighing time period in the converting process obtained in step 2 and the data of the weighing time period in tapping, these two data are carried out weighing time period predesigne, and calculation result is carried out manual confirmation and revision;
4) by the calculation result input control weigh bridge through manual confirmation and revision that obtains in step 3 and scale hooper, automatic weighing is carried out.
According to the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, it is characterized in that, described duration of blast benchmark is specially, set up oxygen blast per-cent and duration of blast mapping table, form length is divided into 100 sections, represent from oxygen blast per-cent from duration of blast in seconds corresponding to the blowing oxygen quantity of every 1 percentage point of 1% to 100%, duration of blast is carried out circulative accumulation addition calculation, namely, every 1% blowing oxygen quantity required time is calculated and cumulative addition from initial oxygen blast flow, the oxygen blast per-cent that aggregate-value is corresponding can extrapolate current blowing oxygen quantity, write corresponding position in oxygen blast per-cent and duration of blast mapping table, wherein, newly-increased 1% oxygen amount required time=current oxygen flow in predetermined oxygen amount × 36/.
According to the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, it is characterized in that, described blowing oxygen quantity benchmark is specially, set up duration of blast and blowing oxygen quantity mapping table, length is divided into 2500 sections, represent the blowing oxygen quantity that in the 1st second to the 2500th second, p.s. is corresponding from blowing, blowing oxygen quantity circulative accumulation is calculated, namely, blowing oxygen quantity accumulating p.s. is calculated from initial oxygen blast flow, accumulated value is current blowing oxygen quantity, the corresponding position of write duration of blast and blowing oxygen quantity mapping table, current oxygen blast per-cent=current blowing oxygen quantity/predetermined blowing oxygen quantity, find oxygen blast flow by current oxygen blast per-cent correspondence again and obtain current oxygen blast flow, thus start to calculate next second.
According to the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, it is characterized in that, the weighing time period in described converting process, its design parameter having weighed point control is:
1) alloy total amount is 0 ~ 4 ton, when blowing oxygen quantity accounts for 60% of the total blowing oxygen quantity of this stove steel, starts to weigh;
2) alloy total amount is 4 ~ 7 tons, when blowing oxygen quantity accounts for 50% of the total blowing oxygen quantity of this stove steel, starts to weigh;
3) alloy total amount is 7 ~ 10 tons, when blowing oxygen quantity accounts for 40% of the total blowing oxygen quantity of this stove steel, starts to weigh;
4) alloy total amount is 10 ~ 13 tons, when blowing oxygen quantity accounts for 30% of the total blowing oxygen quantity of this stove steel, starts to weigh;
5) alloy total amount is 13 ~ ∞ ton, when blowing oxygen quantity accounts for 20% of the total blowing oxygen quantity of this stove steel, starts to weigh.
According to the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, it is characterized in that, the weighing time period in described tapping, it has weighed being specially of point control, extract the actual tapping time of the upper one heat steel of this stove steel, it is weighed the time opening divided by 2 as current heat, and controlled between 3 ~ 5min, when calculation result starts to weigh according to 5min more than during 5min, calculation result starts to weigh according to 3min when being less than 3min, if new blow-on, namely furnace life is 1 or new tap hole, namely when the tap hole life-span is 1, according to tapping to starting during 5min to weigh.
According to the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, it is characterized in that, described weighing time period predesigne, it is specially, before weighing time period predesigne, first check that this alloy is pure storehouse or bin double, if weighing time period predesigne is then directly carried out in pure storehouse, if be bin double, partition first claims than large feed bin, if partition is than identical, then check weigh bridge size, the first title that weigh bridge is large, and then launch weighing pattern and carry out weighing time period predesigne, during calculating, each weighing pattern comprises feed bin number, weighing order, weighing start time and weighing are worth four item numbers according to composition, if current feed bin residual content, within this feed bin maximum capacity scope, once weighs complete, if exceed maximum capacity scope, first claim 90% of maximum capacity value, remaining person weighs once again, weighing speed is unified is per minute 2 tons, each weighs mode sequence and weighs, fixed intervals 50 seconds, calculate accordingly and weigh start time, weighing order, and by all pattern Unified numbers.
The feed bin automatic weighing control method of a kind of converter alloy production system of the present invention is used to obtain following beneficial effect:
1. the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, applied widely.Be not only applicable to the basic automation systems controlled by duration of blast, be applicable to the basic automation systems controlled by blowing oxygen quantity yet;
2. the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, its alloying technology all standing.Can realize comprising the aluminum series alloy all alloy automatic weighings requirement weighing complex process, be conducive to the integral level improving the operation of converter alloying, stablize converter producing.
Accompanying drawing explanation
Fig. 1 is the particular flow sheet of the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention;
Fig. 2 is oxygen blast per-cent and the duration of blast mapping table of the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention;
Fig. 3 is duration of blast and the blowing oxygen quantity mapping table of the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention;
Fig. 4 is the oxygen blast flow schematic diagram of the feed bin automatic weighing control method of a kind of converter alloy production system of the present invention.
Embodiment
Be further described below in conjunction with the feed bin automatic weighing control method of drawings and Examples to a kind of converter alloy production system of the present invention.
Embodiment
As shown in Figure 1, a kind of feed bin automatic weighing control method of converter alloy production system, comprise and determine that alloy adds the trade mark and addition thereof in advance, its concrete steps are as follows:
1) add the trade mark and addition according to pre-determined alloy, set up and control benchmark, described control benchmark is respectively, and sets up duration of blast benchmark and set up blowing oxygen quantity benchmark by oxygen amount system by time system;
2) also distinguish the weighing time period according to the duration of blast benchmark in step 1 and blowing oxygen quantity benchmark, the described weighing time period is, the weighing time period in converting process and the weighing time period in tapping;
3) according to the data of the weighing time period in the converting process obtained in step 2 and the data of the weighing time period in tapping, these two data are carried out weighing time period predesigne, and calculation result is carried out manual confirmation and revision;
4) by the calculation result input control weigh bridge through manual confirmation and revision that obtains in step 3 and scale hooper, automatic weighing is carried out.
As shown in Figure 2, duration of blast benchmark described in above-mentioned steps 1 is specially, set up oxygen blast per-cent and duration of blast mapping table, form length is divided into 100 sections, represent from oxygen blast per-cent from duration of blast in seconds corresponding to the blowing oxygen quantity of every 1 percentage point of 1% to 100%, duration of blast is carried out circulative accumulation addition calculation, namely, (every 1% blowing oxygen quantity required time is calculated and cumulative addition with reference to figure 4) from initial oxygen blast flow, the oxygen blast per-cent that aggregate-value is corresponding can extrapolate current blowing oxygen quantity (such as: when aggregate-value reaches 600 seconds, corresponding oxygen blast per-cent is about 60%, if total blowing oxygen quantity (known parameters) is 10000m
3, namely current blowing oxygen quantity is 10000m
3* 60%=6000m
3), write corresponding position in oxygen blast per-cent and duration of blast mapping table, wherein, newly-increased 1% oxygen amount required time=current oxygen flow in predetermined oxygen amount × 36/.
As shown in Figure 3, blowing oxygen quantity benchmark described in above-mentioned steps 1 is specially, set up duration of blast and blowing oxygen quantity mapping table, length is divided into 2500 sections (in order to simply represent that event duration of blast was only drawn to 990 seconds in Fig. 3), represent the blowing oxygen quantity that in the 1st second to the 2500th second, p.s. is corresponding from blowing, blowing oxygen quantity circulative accumulation is calculated, namely, (blowing oxygen quantity accumulating p.s. is calculated with reference to figure 4) from initial oxygen blast flow, accumulated value is current blowing oxygen quantity, the corresponding position of write duration of blast and blowing oxygen quantity mapping table, current oxygen blast per-cent=current blowing oxygen quantity/predetermined blowing oxygen quantity (known parameters), find oxygen blast flow by current oxygen blast per-cent correspondence again and obtain current oxygen blast flow (as shown in Figure 4, such as, when known current oxygen blast per-cent is 40%, oxygen blast flow is 65000m
3/ hour), thus start to calculate next second.
The weighing time period in converting process described in above-mentioned steps 2, its design parameter having weighed point control is:
1) alloy total amount is 0 ~ 4 ton, when blowing oxygen quantity accounts for 60% of the total blowing oxygen quantity of this stove steel, starts to weigh;
2) alloy total amount is 4 ~ 7 tons, when blowing oxygen quantity accounts for 50% of the total blowing oxygen quantity of this stove steel, starts to weigh;
3) alloy total amount is 7 ~ 10 tons, when blowing oxygen quantity accounts for 40% of the total blowing oxygen quantity of this stove steel, starts to weigh;
4) alloy total amount is 10 ~ 13 tons, when blowing oxygen quantity accounts for 30% of the total blowing oxygen quantity of this stove steel, starts to weigh;
5) alloy total amount is 13 ~ ∞ ton, when blowing oxygen quantity accounts for 20% of the total blowing oxygen quantity of this stove steel, starts to weigh.
Alloy in this converting process weighs sequence list to be seen as following table 1.
| Weighing order | Alloy code | Alloy designations | Alloy nomenclature |
| 1 | 1401 | H-MN | Gao Meng |
| 2 | 1402 | M-MN | Middle manganese |
| 3 | 1409 | MTMN | Electrolytic manganese |
| 4 | 1425 | MN-C | Manganese carbon ball |
| 5 | 1432 | MCCR | Ferrochrome |
| 6 | 1433 | LCCR | Ferrochrome |
| 7 | 1406 | SIMN | Silicomanganese |
| 8 | 1404 | FESI | Ferrosilicon |
| 9 | 1407 | P-SI | High board silicon |
| 10 | 1463 | T-SI | High purity ferrosilicon |
| 11 | 1459 | FE-P | Ferrophosphorus |
| 12 | 1420 | ASMN | Aluminium silicomanganese |
| 13 | 1418 | FEAL | Ferro-aluminum |
| 14 | 1414 | B-AL | Platform aluminium |
| 15 | 1415 | S-AL | Grain aluminium |
| 16 | 1419 | SABC | Aluminium silicon barium calcium |
Alloy in table 1 converting process weighs sequence list
The weighing time period in tapping described in above-mentioned steps 2, it has weighed being specially of point control, extract the actual tapping time of the upper one heat steel of this stove steel, it is weighed the time opening divided by 2 as current heat, and controlled between 3 ~ 5min, when calculation result starts to weigh according to 5min more than during 5min, calculation result starts to weigh according to 3min when being less than 3min, if new blow-on, namely furnace life is 1 or new tap hole, namely when the tap hole life-span is 1, according to tapping to starting during 5min to weigh.
Alloy in this tapping weighs sequence list and sees as following table 2:
| Weighing order | Alloy code | Alloy designations | Alloy nomenclature |
| 1 | 1480 | AL5D | Aluminium slag |
| 2 | 1481 | AL2D | Aluminium slag |
| 3 | 1483 | DTAD | Aluminium slag |
| 4 | 1290 | SCHP | Little steel disc |
Alloy in table 2 tapping weighs sequence list
Weighing time period predesigne described in above-mentioned steps 3, it is specially, before weighing time period predesigne, first check that this alloy is pure storehouse or bin double, if weighing time period predesigne is then directly carried out in pure storehouse, if be bin double, partition first claims than large feed bin, if partition is than identical, then check weigh bridge size, the first title that weigh bridge is large, and then launch weighing pattern and carry out weighing time period predesigne, during calculating, each weighing pattern comprises feed bin number, weighing order, weighing start time and weighing are worth four item numbers according to composition, if current feed bin residual content, within this feed bin maximum capacity scope, once weighs complete, if exceed maximum capacity scope, first claim 90% of maximum capacity value, remaining person weighs once again, weighing speed is unified is per minute 2 tons, each weighs mode sequence and weighs, fixed intervals 50 seconds, calculate accordingly and weigh start time, weighing order, and by all pattern Unified numbers.
The feed bin automatic weighing control method of a kind of converter alloy production system of the present invention, applied widely, be not only applicable to the basic automation systems controlled by duration of blast, also the basic automation systems controlled by blowing oxygen quantity are applicable to, the present invention can also realize comprising the aluminum series alloy all alloy automatic weighings requirement weighing complex process, alloy weighs full-automatic enforcement ratio and reaches more than 85%, not only greatly alleviate the labour intensity of operator, and decrease manual weighing's error, create good conditions for improving converter operation automation level, be conducive to the integral level improving the operation of converter alloying, stablize converter producing, be applicable to various alloy converter and weigh field.
Claims (2)
1. a feed bin automatic weighing control method for converter alloy production system, comprise and determine that alloy adds the trade mark and addition thereof in advance, its concrete steps are as follows:
1) add the trade mark and addition according to pre-determined alloy, set up and control benchmark, described control benchmark is respectively, and sets up duration of blast benchmark and set up blowing oxygen quantity benchmark by oxygen amount system by time system;
2) also distinguish the weighing time period according to the duration of blast benchmark in step 1 and blowing oxygen quantity benchmark, the described weighing time period is, the weighing time period in converting process and the weighing time period in tapping;
3) according to the data of the weighing time period in the converting process obtained in step 2 and the data of the weighing time period in tapping, these two data are carried out weighing time period predesigne, and calculation result is carried out manual confirmation and revision;
4) by the calculation result input control weigh bridge through manual confirmation and revision that obtains in step 3 and scale hooper, automatic weighing is carried out;
Described duration of blast benchmark is specially, set up oxygen blast per-cent and duration of blast mapping table, form length is divided into 100 sections, represent from oxygen blast per-cent from duration of blast in seconds corresponding to the blowing oxygen quantity of every 1 percentage point of 1% to 100%, duration of blast is carried out circulative accumulation addition calculation, namely, every 1% blowing oxygen quantity required time is calculated and cumulative addition from initial oxygen blast flow, the oxygen blast per-cent that aggregate-value is corresponding can extrapolate current blowing oxygen quantity, write corresponding position in oxygen blast per-cent and duration of blast mapping table, wherein, newly-increased 1% oxygen amount required time=current oxygen flow in predetermined oxygen amount × 36/,
Described blowing oxygen quantity benchmark is specially, set up duration of blast and blowing oxygen quantity mapping table, length is divided into 2500 sections, represent the blowing oxygen quantity that in the 1st second to the 2500th second, p.s. is corresponding from blowing, blowing oxygen quantity circulative accumulation is calculated, namely, blowing oxygen quantity accumulating p.s. is calculated from initial oxygen blast flow, accumulated value is current blowing oxygen quantity, the corresponding position of write duration of blast and blowing oxygen quantity mapping table, current oxygen blast per-cent=current blowing oxygen quantity/predetermined blowing oxygen quantity, find oxygen blast flow by current oxygen blast per-cent correspondence again and obtain current oxygen blast flow, thus start to calculate next second,
The weighing time period in described converting process, its design parameter having weighed point control is:
1) alloy total amount is 0 ~ 4 ton, when blowing oxygen quantity accounts for 60% of the total blowing oxygen quantity of this stove steel, starts to weigh;
2) alloy total amount is 4 ~ 7 tons, when blowing oxygen quantity accounts for 50% of the total blowing oxygen quantity of this stove steel, starts to weigh;
3) alloy total amount is 7 ~ 10 tons, when blowing oxygen quantity accounts for 40% of the total blowing oxygen quantity of this stove steel, starts to weigh;
4) alloy total amount is 10 ~ 13 tons, when blowing oxygen quantity accounts for 30% of the total blowing oxygen quantity of this stove steel, starts to weigh;
5) alloy total amount is 13 ~ ∞ ton, when blowing oxygen quantity accounts for 20% of the total blowing oxygen quantity of this stove steel, starts to weigh;
The weighing time period in described tapping, it has weighed being specially of point control, extract the actual tapping time of the upper one heat steel of this stove steel, it is weighed the time opening divided by 2 as current heat, and is controlled between 3 ~ 5min, when calculation result starts to weigh according to 5min more than during 5min, start to weigh according to 3min when calculation result is less than 3min, if new blow-on, namely furnace life is 1 or new tap hole, namely when the tap hole life-span is 1, according to tapping to starting during 5min to weigh.
2. the feed bin automatic weighing control method of a kind of converter alloy production system as claimed in claim 1, it is characterized in that, described weighing time period predesigne, it is specially, before weighing time period predesigne, first check that this alloy is pure storehouse or bin double, if weighing time period predesigne is then directly carried out in pure storehouse, if be bin double, partition first claims than large feed bin, if partition is than identical, then check weigh bridge size, the first title that weigh bridge is large, and then launch weighing pattern and carry out weighing time period predesigne, during calculating, each weighing pattern comprises feed bin number, weighing order, weighing start time and weighing are worth four item numbers according to composition, if current feed bin residual content, within this feed bin maximum capacity scope, once weighs complete, if exceed maximum capacity scope, first claim 90% of maximum capacity value, remaining person weighs once again, weighing speed is unified is per minute 2 tons, each weighs mode sequence and weighs, fixed intervals 50 seconds, calculate accordingly and weigh start time, weighing order, and by all pattern Unified numbers.
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| CN110343805B (en) * | 2018-04-04 | 2021-07-09 | 上海梅山钢铁股份有限公司 | Molten steel silicon-manganese component control device and method for ladle refining furnace |
| CN115125358B (en) * | 2021-03-25 | 2023-09-12 | 宝山钢铁股份有限公司 | Automatic weighing virtual bin control method for converter alloy |
| CN116144874A (en) * | 2023-02-23 | 2023-05-23 | 广东中南钢铁股份有限公司 | Automatic steelmaking feeding method and system for converter |
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| CN102409130A (en) * | 2010-09-26 | 2012-04-11 | 鞍钢股份有限公司 | Automatic feeding device and method for converter flux |
| CN102424889A (en) * | 2011-12-05 | 2012-04-25 | 济南钢铁股份有限公司 | Automatic feeding system for automatic steel smelting converter and control method thereof |
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| CN102409130A (en) * | 2010-09-26 | 2012-04-11 | 鞍钢股份有限公司 | Automatic feeding device and method for converter flux |
| CN202216745U (en) * | 2011-08-09 | 2012-05-09 | 中冶华天南京自动化工程有限公司 | Automatic material preparation device provided with multiple storage bins and single weighing hopper |
| CN102424889A (en) * | 2011-12-05 | 2012-04-25 | 济南钢铁股份有限公司 | Automatic feeding system for automatic steel smelting converter and control method thereof |
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