CN102621028A - Method for determining saturated moisture of coke - Google Patents
Method for determining saturated moisture of coke Download PDFInfo
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- CN102621028A CN102621028A CN2012100892599A CN201210089259A CN102621028A CN 102621028 A CN102621028 A CN 102621028A CN 2012100892599 A CN2012100892599 A CN 2012100892599A CN 201210089259 A CN201210089259 A CN 201210089259A CN 102621028 A CN102621028 A CN 102621028A
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Abstract
The invention discloses a method for determining saturated moisture of coke, comprising crushing treatment on the coke and drying treatment on the coke. The method comprises the following steps of: crushing appropriate amount of coke sample acquired from a production field, and screening the crushed coke according to different fractions within the particle size range of 5-30mm; placing the coke at different fractions into a drying box, and carrying out full forced air drying at the temperature of 95-115 DEG C; mixing the dried coke according to weight percentage of different fractions, and immersing the mixed coke into water to be fully soaked; and weighing the soaked coke on a balance, and calculating content of the saturated moisture of the coke when reading of the balance is stable. The invention provides a method for determining the saturated moisture of the coke for the coke with high moisture content in production, thus being beneficial to finding that whether excessive moisture is contained in the coke to judge whether excessive water is sprinkled into the coke, being beneficial to coke quality monitoring and improving use quality of the coke and being beneficial to reducing usage of the coke and production cost in a smelting reduction process.
Description
Technical field
The present invention relates to the coke property technical field of measurement and test, be specifically related to the method for saturated determination of moisture in a kind of coke.
Background technology
Coke is a main fuel of producing molten iron, it mainly coal pyrolysis under the condition of high temperature secluding air generate.Coke has served as effects such as exothermic mixture, carbon skeleton, reductive agent, carburizer in the blast furnace of producing molten iron, the quality of coke quality directly influences the production of molten iron.
Coke moisture how much be the key factor of weighing the coke quality quality, can directly have influence on blast furnace production.What some enterprises adopted at present is Dry Quenching Technology, so coke moisture is very low, below 1%.But domestic what also have that a lot of enterprises adopt is the coke wet quenching technology, and the moisture of coke is generally at 5-10%.These moisture of coke generally all are inherent moisture and part free moisture, are not the saturation moisture of coke.The COREX ironmaking technique of fusion and reduction is as unique industrialized blast furnace iron-making process that is different from, and on the fuel utilization structure, compared revolutionary change with blast furnace.But the fuel of COREX3000 technology uses and be unable to do without coke; The quality of coke quality influences the ventilative liquid permeability of COREX melting gasification furnace semicoke bed and the fuel consumption of production to a great extent, and the while also influences the gas penetration potential of shaft furnace and then influences the degree of metalization of mineral reduction.Calculate the fuel moisture of every increase by 1% according to research, fuel ratio will increase about 17kg.The production cost that how much directly influences the COREX molten iron of coke moisture, coke moisture is many, and the heat energy of consumption is just many, thereby just needs more fuel, consumes more oxygen.
COREX3000 produces with coke and is mainly the burnt and Baosteel nut coke in purchase Shanxi; Shanxi Jiao gets into its moisture of groove use process down detection all more than 12% behind the stock ground; Have a strong impact on COREX production, because the stock ground generally belongs to another management process, so coke moisture becomes the emphasis that the COREX of enterprise pays close attention to; Measure the coke saturation moisture and can judge whether directly that water spray too much simultaneously also can reduce the stock ground handling cost in cargo handling process.The method of measuring coke as analysed basis moisture at present is GB 2001-1991, and patent CN1482462, CN201096762 have all proposed the method for automatic measurement coke as analysed basis moisture, but the method for measurement coke saturation moisture is not appeared in the newspapers.
Summary of the invention
Therefore, the present invention's technical matters that will solve is to provide a kind of method of measuring the coke saturation moisture.
Technical scheme of the present invention is: a kind of method of measuring the coke saturation moisture, comprise the break process of coke and the dried of coke, and this method may further comprise the steps:
A. the break process of said coke is broken with get an amount of coke sample from the production scene, and the coke after the fragmentation is sieved by size fractionated in the 5mm-30mm particle size range;
B. the dried of said coke is that the coke of the above-mentioned size fractionated that obtains is put into drying box, fully forced air drying under 95-115 ℃ of temperature;
C. with the percentage by weight batching of dried coke, the coke for preparing is immersed in the water fully soak again by size fractionated;
D. soaked coke is weighed at balance, when treating that balance reading is stablized, can calculate the saturation moisture content of coke.
According to the method for mensuration coke saturation moisture of the present invention, preferably, the said grade of step a is 3-6.As, can coke be carried out utilizing the sieve of 30mm, 25mm, 20mm, 16mm, 8mm and 5mm sieve aperture to sieve after the fragmentation, be divided into 30-25mm, 25-20mm, 20-16mm, 16-8mm and five grades of 8-5mm.The grade that also can be divided into other.The purpose that coke-screening arrangement is divided into size fractionated is, makes specimen more even, and is more representative, makes it to be consistent with feedstock property as far as possible.
Wherein preferably, the time of the said forced air drying of step b is 3-5 hour.Forced air drying is so that the abundant drying of coke is advisable, and slightly different according to the moistening degree of coke, 3-5 hour is the general preferred time.
Preferably, the said temperature of step b is 100-110 ℃.
Preferably, the said soak time of step c is 15-30 hour.The saturation moisture of coke is the absorbent maximum moisture of coke, and the purpose of immersion is that coke is fully absorbed water, and reaches supersaturation.The purpose of above comminuting coke also is to make it abundant suction.The required time chien shih coke abundant inspiration moisture of soaked in water gets final product.
Further, said soak time is 20-28 hour.
The present invention's beneficial effect compared with prior art is:
1, filled up the blank of coke saturation moisture measuring method;
2, the measurement through the coke saturation moisture can judge whether moisture is excessive in the wet dedusting process of stock ground aspect environmental protection, thereby can further guarantee to get into the quality of the coke that ironmaking produces, and is beneficial to subsequent production;
3, through the measurement of coke saturation moisture, can effectively control the excessive problem of the moisture in the coke, reduce the fuel consumption in the COREX3000 iron-making production, the direct motion that helps producing reduces COREX3000 ironmaking production cost.
Description of drawings
Fig. 1 measures the process chart of coke saturation moisture for the present invention.
Embodiment
Embodiment 1
It is 0.66% that water intaking divides Mad; Ash content Ad is 14.26%; Volatile matter Vd is 1.62% the burnt 20kg in Shanxi; Put into disintegrating machine and carry out fragmentation, the coke after the fragmentation utilizes the sieve of 30mm, 25mm, 20mm, 16mm, 8mm, 5mm sieve aperture to sieve record and calculates the content of each grade coke, and the computational data after the screening is as shown in table 1.Sample after the screening is taken out after being put in 105 ℃ of dry 4h of drying box, press the particle size range weight ratios batchings at different levels in the table 1, dosage is 3kg for 1 part, joins 2 parts and does parallel kind.The coke that is 30-25mm is prepared burden by 1.54% weight ratio by 13.97% weight ratio, the coke of 8-5mm by 13.31% weight ratio, the coke of 16-8mm by 24.08% weight ratio, the coke of 20-16mm by 47.1% weight ratio, the coke of 25-20mm; Coke after preparing is put in the hanging basket immerses in the water together; In water, take out behind the immersion 24h and be hung on below the balance; 5min reads the balance data No. one time; When coke drips when reducing near state of saturation, when the balance data are constant in 5min, just think the state of reaching capacity, the moisture in this moment coke is the coke saturation moisture; Record balance reading this moment, recording the burnt saturation moisture in Shanxi through calculating is 12.43%.
Table 1 coke grade scope
| Particle size range | 30-25mm | 25-20mm | 20-16mm | 16-8mm | 8-5mm |
| Shanxi burnt (%) | 47.10 | 24.08 | 13.31 | 13.97 | 1.54 |
Embodiment 2
It is 0.59% that water intaking divides Mad, and ash content Ad is 11.55%, and volatile matter Vd is 0.89% Baosteel nut coke 20kg; Put into disintegrating machine and carry out fragmentation, the coke after the fragmentation utilizes the sieve of 30mm, 25mm, 20mm, 16mm, 8mm, 5mm sieve aperture to sieve record and calculates the content of each grade coke, and the computational data after the screening is as shown in table 2; Sample after the screening is taken out after being put in 105 ℃ of dry 4h of drying box, and by front size data batching, dosage is 3kg for 1 part; Join 2 parts and do parallel appearance; Coke after preparing is put in immerses together in the hanging basket in the water, in water, soak to take out behind the 24h and be hung on below the balance, 5min reads the balance data No. one time; When the balance data are constant in 5min, just think the state of reaching capacity; Moisture in the coke is the coke saturation moisture at this moment, record balance reading this moment, and the saturation moisture that records the Baosteel nut coke through calculating is 9.18%.
Table 2 coke grade scope
| Particle size range | 30-25mm | 25-20mm | 20-16mm | 16-8mm | 8-5mm |
| Baosteel nut coke (%) | 40.42 | 27.00 | 16.31 | 14.20 | 2.07 |
Embodiment 3
It is 0.8% that water intaking divides Mad; Ash content Ad is 14.40%; Volatile matter Vd is 1.62% the burnt 20kg in Shanxi; Put into disintegrating machine and carry out fragmentation, the coke after the fragmentation utilizes the sieve of 30mm, 20mm, 12mm, 5mm sieve aperture to sieve record and calculates the content of each grade coke, and the computational data after the screening is as shown in table 3.Sample after the screening is taken out after being put in 110 ℃ of dry 5h of drying box, press the particle size range weight ratios batchings at different levels in the table 3, dosage is 3kg for 1 part, joins 2 parts and does parallel kind.Other are with embodiment 1, and recording the burnt saturation moisture in Shanxi is 13.01%.
Table 3 coke grade scope
| Particle size range | 30-20mm | 20-12mm | 12-5mm |
| Shanxi burnt (%) | 71.50 | 16.23 | 12.27 |
Embodiment 4
It is 0.61% that water intaking divides Mad; Ash content Ad is 11.61%; Volatile matter Vd is 0.89% Baosteel nut coke 20kg; Put into disintegrating machine and carry out fragmentation, the coke after the fragmentation utilizes the sieve of 30mm, 25mm, 20mm, 15mm, 10mm sieve aperture to sieve record and calculates the content of each grade coke, and the computational data after the screening is as shown in table 4.Sample after the screening is taken out after being put in 115 ℃ of dry 3.5h of drying box, press the particle size range weight ratios batchings at different levels in the table 4, dosage is 3kg for 1 part, joins 2 parts and does parallel kind.After preparing material, coke is placed in the hanging basket in water, to soak to take out behind the 30h is hung on below the balance. other are with embodiment 2.The saturation moisture that records the Baosteel nut coke is 9.10%.
Table 4 coke grade scope
| Particle size range | 30-25mm | 25-20mm | 20-15mm | 15-10mm |
| Baosteel nut coke (%) | 40.60 | 27.12 | 17.35 | 14.93 |
The present invention proposes a kind of method of measuring the coke saturation moisture; To the wet dedusting because a large amount of dust pollution employing is sprayed water in the coke cargo handling process; Whether excessively whether particularly to the too high coke of moisture in producing a kind of method of measuring saturated moisture in the coke is provided, being beneficial to find has excess water in the coke, thereby judge coke watering; Be beneficial to the coke quality monitoring and improve the coke service property (quality), reduce the use and the production cost of amount of coke in the smelting reduction process.
Claims (6)
1. a method of measuring the coke saturation moisture comprises the break process of coke and the dried of coke, and it is characterized in that: this method may further comprise the steps:
A. the break process of said coke is broken with get an amount of coke sample from the production scene, and the coke after the fragmentation is sieved by size fractionated in the 5mm-30mm particle size range;
B. the dried of said coke is that the coke of the above-mentioned size fractionated that obtains is put into drying box, fully forced air drying under 95-115 ℃ of temperature;
C. with the percentage by weight batching of dried coke, the coke for preparing is immersed in the water fully soak again by size fractionated;
D. soaked coke is weighed at balance, when treating that balance reading is stablized, can calculate the saturation moisture content of coke.
2. the method for mensuration coke saturation moisture according to claim 1 is characterized in that: the said grade of step a is 3-6.
3. the method for mensuration coke saturation moisture according to claim 1 is characterized in that: the time of the said forced air drying of step b is 3-5 hour.
4. the method for mensuration coke saturation moisture according to claim 1 is characterized in that: the said temperature of step b is 100-110 ℃.
5. the method for mensuration coke saturation moisture according to claim 1 is characterized in that: the said soak time of step c is 15-30 hour.
6. the method for mensuration coke saturation moisture according to claim 5 is characterized in that: said soak time is 20-28 hour.
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| CN201210089259.9A CN102621028B (en) | 2012-03-30 | 2012-03-30 | Method for determining saturated moisture of coke |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840943A (en) * | 2016-08-28 | 2017-06-13 | 郑州赛斯工业技术转化研究院有限公司 | A kind of device and test method for detecting construction refuse regenerated aggregate water absorption character |
| CN112129916A (en) * | 2020-10-30 | 2020-12-25 | 江苏沙钢集团有限公司 | Coke sample detection preparation method |
| CN115541337A (en) * | 2022-09-20 | 2022-12-30 | 宝武集团鄂城钢铁有限公司 | Method for alternately analyzing dry and wet quenched coke |
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| CN1482462A (en) * | 2003-07-29 | 2004-03-17 | 罗华东 | Combined measuring method for technical analysis of coal quality and analyzer thereof |
| CN201096762Y (en) * | 2007-10-29 | 2008-08-06 | 株洲职业技术学院 | Diversified quick testing analyzer for coal quality |
| US20110033247A1 (en) * | 2009-08-06 | 2011-02-10 | American Accutech Ltd. Co. | Effective Approach to Preventing and Remedying Distresses in Soils and Construction Materials |
| CN101974680A (en) * | 2010-10-29 | 2011-02-16 | 中南大学 | Method for quickly testing appropriate granulation moisture content of iron ore sinter mixture |
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2012
- 2012-03-30 CN CN201210089259.9A patent/CN102621028B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1482462A (en) * | 2003-07-29 | 2004-03-17 | 罗华东 | Combined measuring method for technical analysis of coal quality and analyzer thereof |
| CN201096762Y (en) * | 2007-10-29 | 2008-08-06 | 株洲职业技术学院 | Diversified quick testing analyzer for coal quality |
| US20110033247A1 (en) * | 2009-08-06 | 2011-02-10 | American Accutech Ltd. Co. | Effective Approach to Preventing and Remedying Distresses in Soils and Construction Materials |
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Non-Patent Citations (1)
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| 沈珍瑶 等: "盐溶液法测定非饱和膨润土的水分特征曲线", 《水文地质工程地质》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840943A (en) * | 2016-08-28 | 2017-06-13 | 郑州赛斯工业技术转化研究院有限公司 | A kind of device and test method for detecting construction refuse regenerated aggregate water absorption character |
| CN106840943B (en) * | 2016-08-28 | 2019-05-24 | 华北水利水电大学 | A kind of device and test method detecting construction refuse regenerated aggregate water absorption character |
| CN112129916A (en) * | 2020-10-30 | 2020-12-25 | 江苏沙钢集团有限公司 | Coke sample detection preparation method |
| CN115541337A (en) * | 2022-09-20 | 2022-12-30 | 宝武集团鄂城钢铁有限公司 | Method for alternately analyzing dry and wet quenched coke |
| CN115541337B (en) * | 2022-09-20 | 2024-05-07 | 宝武集团鄂城钢铁有限公司 | Method for alternately analyzing dry-wet quenched coke |
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| CN102621028B (en) | 2014-12-17 |
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Owner name: BAOGANG GROUP CO., LTD. Free format text: FORMER OWNER: BAOSHAN IRON + STEEL CO., LTD. Effective date: 20121231 |
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Effective date of registration: 20121231 Address after: 200122 No. 370 Pu circuit, Shanghai, Pudong New Area Applicant after: Baosteel Group Corporation Address before: 201900 Fujin Road, Shanghai, No. 885, No. Applicant before: Baoshan Iron & Steel Co., Ltd. |
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Effective date of registration: 20200623 Address after: 830022 No. 1 Bayi Road, Toutun River District, the Xinjiang Uygur Autonomous Region, Urumqi Patentee after: XINJIANG BAYI IRON & STEEL Co.,Ltd. Address before: 200122 No. 370 Pu circuit, Shanghai, Pudong New Area Patentee before: BAOSTEEL Group Corp. |