CN105842272A - Coking coal critical temperature test method - Google Patents
Coking coal critical temperature test method Download PDFInfo
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- CN105842272A CN105842272A CN201610370272.XA CN201610370272A CN105842272A CN 105842272 A CN105842272 A CN 105842272A CN 201610370272 A CN201610370272 A CN 201610370272A CN 105842272 A CN105842272 A CN 105842272A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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Abstract
The invention provides a coking coal critical temperature test method. The method includes steps: (1) taking 500g of a coal sample, dividing into two parts, naturally airing one part of the coal sample, and drying the other part of the coal sample for 2h at 107 DEG C; (2) respectively crushing the two parts of the coal sample, and performing a coking index test of the naturally aired coal sample; (3) taking 5g of the coal sample without external moisture into a metal tube, and measuring a coal temperature at a room temperature; (4) putting the metal tube with a digimite into a drying oven at a certain temperature, and observing temperature variation in a coal sample heating process; (5) when the coal sample is heated to a certain temperature, quickly taking out and pouring to a plate, cooling, spreading and performing a coking index test; (6) repeating the steps (3) to (5) to obtain coking indexes at different coal temperatures; (7) when a difference value exceeds an allowable error, the corresponding coal temperature is a coal critical temperature of the coal sample in the corresponding particle size. The method is convenient for measurement of an initial metamorphic temperature of coking coal and provides specific temperature data support for guaranteeing coking coal quality against influences.
Description
Technical field
The present invention provides the temperature testing method in a kind of material smelting process, is specifically related to a kind of coking coal ature of coal critical temperature
Method of testing, belongs to coking coal detection technique field.
Background technology
Coking coal is the coal resources that a class has relatively high volatile, is widely used in the important of refining blast furnace raw material coke
Raw material, owing to its high volatilization is susceptible to oxidation in stacking storage and dry run, causes rotten, loses coking coal in coking
The due effect of process.At present, the traditional sensing techniques of domestic and international coking coal is the most ripe.But, these detect skill
Art is all based on the acquired results under the static conditions such as room temperature mostly.For in the dynamic processes such as intensification to coking coal character research
Less.
This patent temperature based on coal varitation process, finds out coking coal and causes its rotten stagnation temperature during heating waits
Degree, reaches to keep the effect of ature of coal by controlling coal sample temperature.
Summary of the invention
This patent provides a kind of coking coal ature of coal critical temperature method of testing, it is possible to keep coking coal in dry heat process
Ature of coal is unaffected.
The present invention is specifically achieved in that
A kind of coking coal ature of coal critical temperature method of testing, comprises the steps:
(1) taking 500g coal sample, be divided into two parts, a dry 24h under the conditions of natural air, another part is at 107 DEG C
Dry 2h loses completely to the free moisture of coal；
(2) two parts of coal samples are crushed to respectively in the particle size range of required survey, naturally empty dry coal sample are done caking index,
Caking index numerical value as raw coal sample；
(3) coal sample taking 5g drying free moisture puts into the metal tube Ф 10 × 60mm of bottom seal, and point thermometer is inserted
Enter in the middle of metal tube, measure coal temperature during room temperature；
(4) metal tube of band point thermometer is put into the baking oven of uniform temperature, observes the variations in temperature of coal sample heating process；
(5) after coal sample arrives uniform temperature, take out rapidly cooling in being poured on dish and scatter, do caking index test；
(6) repeat (3)～(5), obtain the caking index numerical value of (room temperature～200 DEG C) under different coal temperature；
(7) being contrasted with raw coal sample by the caking index numerical value under different coal temperature, in difference exceedes GB, the permission of regulation is by mistake
Difference, now corresponding coal temperature is the ature of coal critical temperature of coal sample under this granularity.
Wherein, when two parts of coal samples are crushed in the particle size range of required survey respectively, the granularity of two parts of coal sample reductions is identical.
Wherein, in GB, the allowable error of regulation refers to that caking index quantity difference is within ± 3.
This patent provides the method for testing of a kind of ature of coal critical temperature, it is simple to surveys the required ature of coal understanding coking coal and starts to go bad
Temperature, for ensureing the ature of coal unaffected offer actual temp data supporting of coking coal.
Detailed description of the invention
Embodiment 1:
1, taking 500g coal sample, be divided into two parts, a through naturally empty dry 24h, another part is dried 2h to outward at 107 DEG C
Lose completely at moisture；
2, within respectively two parts of coal samples being crushed to 0.1mm, naturally empty dry coal sample being done caking index, result is 83.5,
Caking index numerical value as raw coal sample；
3, the coal sample taking 5g drying free moisture puts into metal tube Ф 10 × 60mm, and point thermometer is inserted in the middle of metal tube,
Coal temperature when measuring room temperature is 15 DEG C；
4, the metal tube of band point thermometer is put into the baking oven of 200 DEG C, observes the variations in temperature of coal sample heating process；
5, after coal sample arrives 75 DEG C, taking out rapidly cooling in being poured on dish and scatter, do caking index test, result is 83.8,
Contrast coal temperature 75 DEG C and the caking index number of raw coal sample, find to have almost no change, so temperature is not coal sample under this granularity
Ature of coal critical temperature；
6, the coal sample taking 5g drying free moisture is tested again, treats coal temperature rise to 90 DEG C, takes out rapidly and does caking index, knot
Fruit is 83.6, again without change, so temperature is not the ature of coal critical temperature of coal sample under this granularity；
7, the coal sample taking 5g drying free moisture is tested again, treats coal temperature rise to 108 DEG C, takes out rapidly and does caking index,
Result is 81.6, without departing from measuring allowable error, so temperature is not the ature of coal critical temperature of coal sample under this granularity；
8, the coal sample taking 5g drying free moisture is tested again, treats coal temperature rise to 126 DEG C, takes out rapidly and does caking index,
Result is 80.2, beyond measuring allowable error, therefore thinks that 126 DEG C is the ature of coal critical temperature of coal sample under this granularity.
Embodiment 2:
1, taking 500g coal sample, be divided into two parts, a through naturally empty dry 24h, another part is dried 2h to outward at 107 DEG C
Lose completely at moisture；
2, within two parts of coal samples being crushed to 0.1～0.2mm respectively, naturally empty dry coal sample being done caking index, result is
74.8, as the caking index numerical value of raw coal sample；
3, the coal sample taking 5g drying free moisture puts into metal tube Ф 10 × 60mm, and point thermometer is inserted in the middle of metal tube,
Coal temperature when measuring room temperature is 15 DEG C；
4, the metal tube of band point thermometer is put into the baking oven of 200 DEG C, observes the variations in temperature of coal sample heating process；
5, after coal sample arrives 81 DEG C, taking out rapidly cooling in being poured on dish and scatter, do caking index test, result is 74.0,
Discovery has almost no change, so temperature is not the ature of coal critical temperature of coal sample under this granularity；
6, the coal sample taking 5g drying free moisture is tested again, treats coal temperature rise to 92 DEG C, takes out rapidly and does caking index, knot
Fruit is 75.0, again without change, so temperature is not the ature of coal critical temperature of coal sample under this granularity；
7, the coal sample taking 5g drying free moisture is tested again, treats coal temperature rise to 114 DEG C, takes out rapidly and does caking index,
Result is 74.5, without departing from measuring allowable error, so temperature is not the ature of coal critical temperature of coal sample under this granularity；
8, the coal sample taking 5g drying free moisture is tested again, treats coal temperature rise to 134 DEG C, takes out rapidly and does caking index,
Result is 70.6, beyond measuring allowable error, therefore thinks that 134 DEG C is the ature of coal critical temperature of coal sample under this granularity.
Claims (3)
1. a coking coal ature of coal critical temperature method of testing, it is characterised in that comprise the steps:
(1) taking 500g coal sample, be divided into two parts, a dry 24h under the conditions of natural air, another part is at 107 DEG C
Dry 2h loses completely to the free moisture of coal；
(2) two parts of coal samples are crushed to respectively in the particle size range of required survey, naturally empty dry coal sample are done caking index,
Caking index numerical value as raw coal sample；
(3) coal sample taking 5g drying free moisture puts into the metal tube Ф 10 × 60mm of bottom seal, and point thermometer is inserted
Enter in the middle of metal tube, measure coal temperature during room temperature；
(4) metal tube of band point thermometer is put into the baking oven of uniform temperature, observes the variations in temperature of coal sample heating process；
(5) after coal sample arrives uniform temperature, take out rapidly cooling in being poured on dish and scatter, do caking index test；
(6) repeat (3)～(5), obtain the caking index numerical value of (room temperature～200 DEG C) under different coal temperature；
(7) by the caking index numerical value contrast of the caking index numerical value under different coal temperature with raw coal sample, when difference exceedes GB
The allowable error of middle regulation, now corresponding coal temperature is the ature of coal critical temperature of coal sample under this granularity.
Coking coal ature of coal critical temperature method of testing the most according to claim 1, it is characterised in that: described two parts of coal samples
Being crushed to respectively in the particle size range of required survey, the granularity of two parts of coal sample reductions is identical.
Coking coal ature of coal critical temperature method of testing the most according to claim 1, it is characterised in that: described GB is advised
Fixed allowable error refers to that caking index quantity difference is within ± 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610370272.XA CN105842272B (en) | 2016-05-30 | 2016-05-30 | A kind of coking coal coal quality critical-temperature test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108264914A (en) * | 2017-12-27 | 2018-07-10 | 武汉钢铁有限公司 | The control method of coal quality stability in coking coal drying process |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187637A (en) * | 1981-05-13 | 1982-11-18 | Sumitomo Metal Ind Ltd | Discrimination of acidity for coal |
| JPS59120691A (en) * | 1982-12-27 | 1984-07-12 | Sumikin Coke Co Ltd | Assessment of degradation of noncaking coal |
| CN2411480Y (en) * | 1999-12-28 | 2000-12-20 | 朱芝蕾 | Automatic determination instrument for coal free expansion ordinal |
| CN101738351A (en) * | 2009-12-15 | 2010-06-16 | 武汉钢铁(集团)公司 | Measuring method of soft coal caking index F value |
| CN201561969U (en) * | 2009-12-14 | 2010-08-25 | 周英彪 | Coal component real-time measuring device |
| CN201673110U (en) * | 2010-04-19 | 2010-12-15 | 常州市方嘉电子仪器有限公司 | Automatic tester drum for bituminous bond indexes |
| CN102175710A (en) * | 2011-02-25 | 2011-09-07 | 首钢总公司 | Method for predicting yield of coal tar |
| CN103196801A (en) * | 2013-03-04 | 2013-07-10 | 神华集团有限责任公司 | Method and apparatus for measuring dynamic thermal stability of solid particles |
| CN104185783A (en) * | 2012-03-27 | 2014-12-03 | 杰富意钢铁株式会社 | Method for evaluating inter-coal adhesion |
| CN104330542A (en) * | 2014-11-10 | 2015-02-04 | 武汉钢铁(集团)公司 | Coal quality evaluating method and distributing method of highly-metamorphic coking coal based on coke optical texture structure |
-
2016
- 2016-05-30 CN CN201610370272.XA patent/CN105842272B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187637A (en) * | 1981-05-13 | 1982-11-18 | Sumitomo Metal Ind Ltd | Discrimination of acidity for coal |
| JPS59120691A (en) * | 1982-12-27 | 1984-07-12 | Sumikin Coke Co Ltd | Assessment of degradation of noncaking coal |
| CN2411480Y (en) * | 1999-12-28 | 2000-12-20 | 朱芝蕾 | Automatic determination instrument for coal free expansion ordinal |
| CN201561969U (en) * | 2009-12-14 | 2010-08-25 | 周英彪 | Coal component real-time measuring device |
| CN101738351A (en) * | 2009-12-15 | 2010-06-16 | 武汉钢铁(集团)公司 | Measuring method of soft coal caking index F value |
| CN201673110U (en) * | 2010-04-19 | 2010-12-15 | 常州市方嘉电子仪器有限公司 | Automatic tester drum for bituminous bond indexes |
| CN102175710A (en) * | 2011-02-25 | 2011-09-07 | 首钢总公司 | Method for predicting yield of coal tar |
| CN104185783A (en) * | 2012-03-27 | 2014-12-03 | 杰富意钢铁株式会社 | Method for evaluating inter-coal adhesion |
| CN103196801A (en) * | 2013-03-04 | 2013-07-10 | 神华集团有限责任公司 | Method and apparatus for measuring dynamic thermal stability of solid particles |
| CN104330542A (en) * | 2014-11-10 | 2015-02-04 | 武汉钢铁(集团)公司 | Coal quality evaluating method and distributing method of highly-metamorphic coking coal based on coke optical texture structure |
Non-Patent Citations (3)
| Title |
|---|
| 国家技术监督局: "《中华人民共和国国家标准 GB/T 5447-1997》", 17 April 1997 * |
| 张国星: "煤的氧化对煤质分析结果的影响", 《化学工程与装备》 * |
| 褚廷湘等: "煤的低温氧化实验研究及红外光谱分析", 《中国安全科学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108264914A (en) * | 2017-12-27 | 2018-07-10 | 武汉钢铁有限公司 | The control method of coal quality stability in coking coal drying process |
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Effective date of registration: 20170703 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Applicant after: Wuhan iron and Steel Company Limited Address before: 430083 Wuhan factory in Hubei Province before the door No. 2 Applicant before: WUHAN IRON AND STEEL CORPORATION |
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