CN105842272B - A kind of coking coal coal quality critical-temperature test method - Google Patents
A kind of coking coal coal quality critical-temperature test method Download PDFInfo
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- CN105842272B CN105842272B CN201610370272.XA CN201610370272A CN105842272B CN 105842272 B CN105842272 B CN 105842272B CN 201610370272 A CN201610370272 A CN 201610370272A CN 105842272 B CN105842272 B CN 105842272B
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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 present invention provides a kind of coking coal coal quality critical-temperature test method, includes the following steps：(1) 500g coal samples are taken, are divided into two parts, a naturally empty dry, another dry 2h at 107 DEG C；(2) two parts of coal samples are crushed respectively, naturally empty dry coal sample is done into caking index；(3) it takes the coal sample of 5g drying free moistures to be put into metal tube, measures coal temperature when room temperature；(4) metal tube with point thermometer is put into the baking oven of certain temperature, observes the temperature change of coal sample heating process；(5) after coal sample reaches certain temperature, rapid taking-up is poured on cooling in disk and scatters, and does caking index test；(6) (3)~(5) are repeated, the caking index numerical value under different coal temperature is obtained；(7) difference is more than allowable error, and corresponding coal temperature is the coal quality critical-temperature of coal sample under the granularity.This method starts deterroration convenient for surveying the required coal quality for understanding coking coal, and actual temp data supporting is provided to ensure that the coal quality of coking coal is unaffected.
Description
Technical field
The present invention provides the temperature testing method in a kind of substance smelting process, and in particular to a kind of coking coal coal quality is critical
Temperature testing method belongs to coking coal detection technique field.
Background technology
Coking coal is a kind of coal resources having compared with high volatile, is widely used in refining blast furnace raw material --- coke
Important source material causes to go bad, loses coking coal and refining since its height volatilization is easy to happen oxidation in stacking storage and drying process
The burnt due effect of process.Currently, the traditional sensing techniques of coking coal are more mature both at home and abroad.But these detection skills
Art is all based on the acquired results under the static conditions such as room temperature mostly.For heating etc. to coking coal property research in dynamic processes
It is less.
Temperature of this patent based on coal varitation process, find out coking coal causes its rotten critical during heating etc.
Temperature has the function that keep coal quality by controlling coal sample temperature.
Invention content
This patent provides a kind of coking coal coal quality critical-temperature test method, and coking coal can be kept in dry heat mistake
The coal quality of journey is unaffected.
What the present invention was specifically realized in：
A kind of coking coal coal quality critical-temperature test method, includes the following steps：
(1) 500g coal samples are taken, are divided into two parts, for 24 hours, another does portion at 107 DEG C for drying under the conditions of natural air
The free moisture of dry 2h to coal loses completely；
(2) two parts of coal samples are crushed to respectively in the required particle size range surveyed, naturally empty dry coal sample are done into caking index,
Caking index numerical value as raw coal sample；
(3) it takes the coal sample of 5g drying free moistures to be put into 10 × 60mm of metal tube Ф of bottom seal, point thermometer is inserted
Enter among metal tube, measures coal temperature when room temperature；
(4) metal tube with point thermometer is put into the baking oven of certain temperature, observes the temperature change of coal sample heating process；
(5) after coal sample reaches certain temperature, rapid taking-up is poured on cooling in disk and scatters, and does caking index test；
(6) (3)~(5) are repeated, the caking index numerical value of (room temperature~200 DEG C) under different coal temperature is obtained；
(7) the caking index numerical value under different coal temperature is compared with raw coal sample, when difference is more than to allow specified in national standard
Error, corresponding coal temperature is the coal quality critical-temperature of coal sample under the granularity at this time.
Wherein, when in the particle size range surveyed needed for being crushed to respectively in two parts of coal samples, the granularity of two parts of coal sample reductions is identical.
Wherein, allowable error specified in national standard refers to caking index quantity difference within ± 3.
This patent provides a kind of test method of coal quality critical-temperature, and the coal quality convenient for understanding coking coal needed for survey starts
Deterroration provides actual temp data supporting to ensure that the coal quality of coking coal is unaffected.
Specific implementation mode
Embodiment 1：
1,500g coal samples are taken, are divided into two parts, it is a through it is naturally empty it is dry for 24 hours, another dries 2h to external at 107 DEG C
Moisture loses completely；
2, two parts of coal samples are crushed within 0.1mm respectively, naturally empty dry coal sample are done into caking index, result is
83.5, the caking index numerical value as raw coal sample；
3, it takes the coal sample of 5g drying free moistures to be put into 10 × 60mm of metal tube Ф, point thermometer is inserted into metal tube
Between, coal temperature when measuring room temperature is 15 DEG C；
4, the metal tube with point thermometer is put into 200 DEG C of baking oven, observes the temperature change of coal sample heating process；
5, after coal sample reaches 75 DEG C, rapid taking-up is poured on cooling in disk and scatters, and does caking index test, result is
83.8,75 DEG C of comparison coal temperature and the caking index number of raw coal sample find to have almost no change, so temperature is not coal under the granularity
The coal quality critical-temperature of sample；
6, it takes the coal sample of 5g drying free moistures to test again, waits for that coal temperature is raised to 90 DEG C, rapid take out does caking index, ties
Fruit is 83.6, again without variation, so temperature is not the coal quality critical-temperature of coal sample under the granularity；
7, it taking the coal sample of 5g drying free moistures to test again, waits for that coal temperature is raised to 108 DEG C, rapid take out does caking index,
As a result it is 81.6, without departing from allowable error is measured, so temperature is not the coal quality critical-temperature of coal sample under the granularity；
8, it taking the coal sample of 5g drying free moistures to test again, waits for that coal temperature is raised to 126 DEG C, rapid take out does caking index,
As a result be 80.2, beyond measure allowable error, therefore think 126 DEG C be coal sample under the granularity coal quality critical-temperature.
Embodiment 2：
1,500g coal samples are taken, are divided into two parts, it is a through it is naturally empty it is dry for 24 hours, another dries 2h to external at 107 DEG C
Moisture loses completely；
2, two parts of coal samples are crushed within 0.1~0.2mm respectively, naturally empty dry coal sample are done into caking index, as a result
It is 74.8, the caking index numerical value as raw coal sample；
3, it takes the coal sample of 5g drying free moistures to be put into 10 × 60mm of metal tube Ф, point thermometer is inserted into metal tube
Between, coal temperature when measuring room temperature is 15 DEG C；
4, the metal tube with point thermometer is put into 200 DEG C of baking oven, observes the temperature change of coal sample heating process；
5, after coal sample reaches 81 DEG C, rapid taking-up is poured on cooling in disk and scatters, and does caking index test, result is
74.0, it finds to have almost no change, so temperature is not the coal quality critical-temperature of coal sample under the granularity；
6, it takes the coal sample of 5g drying free moistures to test again, waits for that coal temperature is raised to 92 DEG C, rapid take out does caking index, ties
Fruit is 75.0, again without variation, so temperature is not the coal quality critical-temperature of coal sample under the granularity；
7, it taking the coal sample of 5g drying free moistures to test again, waits for that coal temperature is raised to 114 DEG C, rapid take out does caking index,
As a result it is 74.5, without departing from allowable error is measured, so temperature is not the coal quality critical-temperature of coal sample under the granularity；
8, it taking the coal sample of 5g drying free moistures to test again, waits for that coal temperature is raised to 134 DEG C, rapid take out does caking index,
As a result be 70.6, beyond measure allowable error, therefore think 134 DEG C be coal sample under the granularity coal quality critical-temperature.
Claims (2)
1. a kind of coking coal coal quality critical-temperature test method, it is characterised in that include the following steps：
（1）500g coal samples are taken, are divided into two parts, portion is dried for 24 hours under the conditions of natural air, another dry 2h at 107 DEG C
Free moisture to coal loses completely；
（2）Two parts of coal samples are crushed to respectively in the required particle size range surveyed, naturally empty dry coal sample is done into caking index, as
The caking index numerical value of raw coal sample；
（3）It takes the coal sample of 5g drying free moistures to be put into 10 × 60mm of metal tube Ф of bottom seal, point thermometer is inserted into gold
Belong among pipe, measures coal temperature when room temperature；
（4）Metal tube with point thermometer is put into the baking oven of certain temperature, the temperature change of coal sample heating process is observed；
（5）After coal sample reaches certain temperature, rapid taking-up is poured on cooling in disk and scatters, and does caking index test；
（6）It repeats（3）~（5）, obtain the caking index numerical value under the different coal temperature of room temperature~200 DEG C；
（7）The caking index numerical value of caking index numerical value and raw coal sample under different coal temperature is compared, when difference is more than ± 3,
Corresponding coal temperature is the coal quality critical-temperature of coal sample under the granularity at this time.
2. coking coal coal quality critical-temperature test method according to claim 1, it is characterised in that：Two parts of coal samples difference
In the particle size range surveyed needed for being crushed to, the granularity of two parts of coal sample reductions is identical.
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| 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 |
| CN102175710B (en) * | 2011-02-25 | 2012-08-01 | 首钢总公司 | Method for predicting yield of coal tar |
| WO2013145677A1 (en) * | 2012-03-27 | 2013-10-03 | Ｊｆｅスチール株式会社 | Method for evaluating inter-coal adhesion |
| CN103196801B (en) * | 2013-03-04 | 2015-08-19 | 神华集团有限责任公司 | The dynamic thermal stability assay method of solid particle and device |
| CN104330542B (en) * | 2014-11-10 | 2016-04-20 | 武汉钢铁(集团)公司 | Height based on charred coal organization structure goes bad the coal property evaluation of coking coal and application method |
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