Some standard content:
National Standard of the People's Republic of China
Classification of Chinese coals
Classification of Chinese coalsThis standard applies to the classification of anthracite, bituminous coal and lignite. Relevant standards and regulations: GB482-81
GB 481— 64
GB 473 - 83
GB 474 - 83
GB 212
GB 476—79
GB 5447—85
GB 479— 64
Method for sampling coal seams
Method for sampling production coal
Method for sampling commercial coal
Method for preparing coal samples
Method for analyzing coal industrially
Method for analyzing coal elements
Method for determining the caking index of bituminous coal
Method for determining the colloid layer index of bituminous coal
GB 150 -- 85Method for determining the light transmittance of young coal in sub-dilometer test of bituminous coal
GB 2566 —81:
Method for determining the calorific value of coal
GB 213—79
GB4632—84
Method for determining the maximum intrinsic moisture content of coal
Promulgated by the Ministry of Coal (1979) Procedure for taking coal samples for coal resource exploration 2 Classification parameters
2.1 This standard classifies coal according to its coalification degree and process performance. 2.2 The coalification degree parameters are used to distinguish anthracite, bituminous coal and lignite. UDC 662.642+662
.66.001.33
GB 5751 8 6
2.3 The parameters of the coalification degree of anthracite use the dry ash-free basis volatile matter and the dry ash-free basis hydrogen content as indicators to distinguish the sub-categories of anthracite.
2.4 Two parameters are used to determine the category of bituminous coal. One is a parameter that characterizes the degree of coalification of bituminous coal, and the other is a parameter that characterizes the cohesiveness of bituminous coal.
The parameter of the degree of coalification of bituminous coal uses the dry ash-free volatile matter as an indicator. The parameter of the cohesiveness of bituminous coal uses the cohesive index and the maximum thickness of the colloid layer (or the degree of expansion) as indicators according to the different cohesiveness to distinguish the categories of bituminous coal. 2.5 The parameter of the degree of coalification of lignite uses the transmittance as an indicator to distinguish between lignite and bituminous coal, and to divide the coal into small categories. The constant humidity ash-free high calorific value is used as an auxiliary to distinguish bituminous coal and lignite. 3 Division and coding of coal categories
3.1 Each type of coal is represented by a two-digit digit, and the ten-digit digit is grouped according to the volatile matter of the coal. Anthracite is 0, bituminous coal is 1-1, and lignite is 5, which are single digits. Anthracite is 1-3, indicating the degree of coalification. Bituminous coal is 1-2, indicating cohesiveness; lignite is 1-2, indicating the degree of coalification.
3.2 Coding and classification according to China's coal classification table and diagram 3.2.1 General table of coal classification (Table 1)
National Bureau of Standards 1986-01-09
1986·1001 trial
Anthracite
GB 5751-86
General table of coal classification
01,02,03
11,12,13,14,15,16
21, 22,23, 21, 25,26
31,32,33.34,35,36
41, 42, 43, 41. 45, 4f
Classification index
+Vr37.n%,G, and then use the transmittance Pm water to distinguish bituminous coal and lignite (in geological exploration, Vr>37.0%, the coke slag characteristics measured under the condition of no cake pressing for coal No. 1 to 2, and then use P to distinguish bituminous coal and lignite) *Vr37.0%, P50% is bituminous coal, Pm30~50% coal, if the constant humidity ash-free high calorific value Q is greater than 24MJ:kg (5700cal/g): it is classified as long-term coal. Q7*in (MJ/kg) -Quw (cal/g)x
3.2.2 Classification of anthracite (Table 2)
Anthracite No. 1
Anthracite No. 2
Especially anthracite No. 3
·In the production mines where the first bituminous coal sub-classification has been determined, 100 (100 - We)
100 (100 -Wt) —A (100- Wa)
Table 2 Classification of anthracite
X 4. 1816 × 10 3
3. 5 ~6. 5
26. 5 ~ 10.0
For the new area to determine the sub-class or
factory scale, only the classification can be used: In geological exploration work, small-scale mines, factories and other units need to re-check the sub-class, and V and H should be measured at the same time, and then the sub-classification should be classified. If there is a conflict between the two results, the combination of H\sub-class shall prevail.
3.2.3 Classification of bituminous coal (Table 3)
Lean coal
1/3Coking coal
Gas-rich coal
1,2Medium wax coal
Weakly sticky coal
Non-sticky
GB5751--86
Classification of bituminous coal
10.0 -20.0
10.0 ~20.0
210.0~20.0
2-10.0~20,0
10:0~20.0
22,0 -28 .0
20.0~28.0
10.0 ~20.0
20.0~28.0
28.0 ~- 37 .0
>28.0 ~37 .0
228 .0 ~ 37 .0
: 20 . .0 ~28.0
>28 .0 ~ 37.0
20,0 ~ 28 .0
28.0 -- 37 .0
·20～50
+50 ~ 65
50 - 65
(>85)*
50 ~ 65
>35 ~50
5 ~ 65
30 ~ 60
>30~ 50
5~ 30
5~ 35
Y，mr
(>220)Www.bzxZ.net
(-220)
，4 When the cohesive index of bituminous coal is less than or equal to weak, the dry ash-free volatile matter Vr and the cohesive index G are used to classify the coal. When the cohesive index G is greater than 8, the dry ash-free volatile matter Vr and the maximum thickness of the colloid layer Y, or the dry ash-free volatile matter Vr and the maximum thickness of the colloid layer b are used to classify the coal.
When G8, Y and Vr are used as classification indicators. When Vr is 28.0%, Vr is tentatively set as 1505: when Vr is 280%, Vr is tentatively set as 2202. When there is a conflict between the b value and the Y value: Y is used to classify the coal. If the ash content of the raw coal is less than or equal to 10%, and there is no ash reduction, the coal with an ash content of 10% or more shall be classified according to the coal sample of GB474-83. The super-preparation method is to use zinc chloride heavy liquid to reduce the ash and then classify. 3.2.4 Classification of lignite (Table 1)
Jie coal No. 1
Lignite No. 2
GB 5T51-86
Classification of lignite
::30 ~ 50
Classification index
For coal with V: 37.1)5, PM30~5U\, if the ash-free high calorific value is greater than 24MJ/kg (5700ca1/g), it is classified as long flame coal.
Simple table of coal classification in China (Table 5)
Anthracite
Lean coal
【/3Coking coal
Gas-fertilizer coal
172Medium sticky coal
Weak sticky coal
Non-sticky coal
Including numbers
16,26,36
23,33
22,32
41,42
Simple table of coal classification in China
10.0 ~-201
[0.1~ 20.0
1.0 - 28.0
1.0 ~37.0
-28.0 ~ 37.0
28.6-37.0
20.t01 -- 37 .0
-20 .0 ~37.0
-2F, non-~ 37
50 ~65
30-·5m
:5~ 3m
（.220）
（>220)
+30 ~ 50
Q·CN++
For G8 coal. Then use Y value and b value to distinguish fat coal and other types of fat coal. When Y25.0mm is attached, it should be classified as fat coal or gas fat coal: such as Y25.Umm, it is classified into other corresponding coal types according to the size of its V\. When the categories are divided by b value, VF28.0, tentatively 515\ is fat coal: VF28.0\, tentatively 622.0% is fat coal or gas fat coal. If there is a contradiction between the categories divided by 5 value and Y value, the category divided by Y value shall prevail. 58
GR 5751-86
*For coal with V37-n%, G5, the light rate Pm is used to distinguish whether it is long flame coal or drinking coal. +*For coal with V37.0%, Pu: 3~0, Q% is measured. If its value is > 2AMJ/kg (0cal/), it should be classified as long flame coal. Note: For coal samples used for classification, except for A*. 10.0%, which does not need to be reduced in ash, for coal samples with A*. 10.0 light rate, floating coal samples after zinc chloride re-selection should be used (for coal that is easy to mud, raw coal with lower calorific value can also be used). For details, please refer to GB 47A-3.3.2.6 China Coal Classification Chart.
(6=150%)
Cargo coal《PM）21
Coal (FM)
(b = 220%)
1/3JM
1/2Jin coal
(1/3ZN)
Coal (RN)
No 3 (
China coal classification chart
Gas fertilizer coal
Indicator transfer line
Changfeng disc
QeGN- 24MJ/kg
Fuzhou coal No. 3
Dry coal No. 1
j30 Pm, %
Dry ash-free volatile matter V, %
Note: 1. The reduction of coal samples for classification shall be in accordance with GB-174 1. The raw coal sample with ash content less than or equal to 10% does not need to be sorted and ash reduced. Or the coal sample with ash content greater than 10% needs to be deashed with the specified zinc oxide heavy liquid before classification (for the low coalification degree lignite that is easy to mud, the raw coal with the lowest ash content can be used). 2. G = B85 is the index conversion line. When (85, Y and b values are used in parallel as classification indicators to distinguish fat coal or gas fat coal from other coal types. Y25.0mm is classified as fat coal or gas fat coal: when Vr, 28.0%, b value is temporarily set at 15%; when V≥2%-0, b value is temporarily set at 220%. When b value and value are conflicting in classifying coal, Y value shall prevail. 3. Anthracite is divided into subcategories according to H and V: When the classification results are contradictory: the subcategory classified by H shall prevail. 4. V≥37.0%, P50% is bituminous coal. When P>30~30%, Q ≥24 MJ/kg is long flame coal, 4 symbols
4, 1 classification indicators are expressed by the following symbols: 59
Dry ash-free volatile matter, normal;
H--—F dry ash-free hydrogen content, %
GR.1 (abbreviated G)-
Bituminous coal caking index;
GB 57 51 86
The maximum thickness of the colloid layer of bituminous coal, mm; (mm) b
The Oya expansion of bituminous coal, %;
The light transmittance of coal sample, shrimp:
QA·GN
The high calorific value of coal on constant humidity ash-free basis, MJ/kg. 4.2 The names of various types of coal can be represented by the following Chinese phonetic letters: wY-.
·Anthracite,
Bituminous coal,
Lean coal;
Lean lean coal,
Lean coal:
-Coking coal;
Fat coal;
-113 Coking coal#
Gas fat coal,
Linear coal;
1/２ZN
1/2 Medium coking coal:
Weak coking coal:
Non-coking coal:
Long flame coal:
Lignite.
5 Sampling and sample preparation
5.1 Coal samples for classification shall be collected in accordance with GB4.82-81, GB481-61, GB475-83 and the "Regulations for Coal Sampling in Coal Resource Exploration" promulgated by the Ministry of Coal in 1979.
5.2 The preparation of coal samples for classification shall be carried out in accordance with GB474-83. Coal samples with ash content less than 10% do not need to be deashed, and coal samples with ash content greater than 10% need to be deashed with specified gasified zinc heavy liquid before classification. 5.3 The special anthracite used for the determination of the bituminous coal caking index shall be collected and the quality shall be determined in accordance with the provisions of the appendix of GB5447-85 "Method for Determining the Caking Index of Bituminous Coal".
6 Analysis method
The volatile matter during the dry light ash period shall be determined in accordance with GB212-77: 6.2 The hydrogen content of the dry ash-free basis shall be determined in accordance with CB476-79. 6.3 The caking index shall be determined in accordance with GB 5417-85. 6.4 The maximum thickness of the colloid layer shall be determined in accordance with GB47964: 6.5 The degree of expansion shall be determined in accordance with GB5450-85. 6.6 The light transmittance shall be determined in accordance with GB 2566-81. The calorific value shall be determined in accordance with GB213-79.
6.8 The maximum intrinsic moisture content of coal shall be determined in accordance with GB 4632-81. 6
Additional Notes:
GB 5751—86
This standard was proposed by the Ministry of Coal Industry of the People's Republic of China and approved by the Beijing Coal Chemistry Research Institute of the Coal Science Research Institute. The Beijing Coal Chemistry Research Institute of the Coal Science Research Institute of the Ministry of Coal Industry, the Anshan Thermal Energy Research Institute of the Ministry of Metallurgical Industry, the Coalfield Geological Exploration Branch of the Ministry of Coal Industry and the Anshan Iron and Steel Company of the Ministry of Metallurgical Industry were responsible for drafting this standard. The main drafters of this standard are:
Anthracite: Chen Misheng, Tao Feiling, Zhang Xiuyi; Bituminous coal: Yang Jinhe, Chen, Feng Anzu, Qu Yusheng, Hao Qi, Shi Mingchang; Coal: Chen Wenmin, Zhu Chunsheng, Gong Zhicongxin This standard will be implemented for three years from October 1, 1986 and will be implemented from January 1, 1989.When V≥2%-0%, the b value is temporarily set at 15%; when V≥2%-0, the b value is temporarily set at 220%. When the b value and the value are in conflict, the Y value shall prevail. 3. When the anthracite is divided into subcategories according to H and V: When the results are in conflict, the subcategories divided by H shall prevail. 4. V≥37.0%, P50% is bituminous coal. When P>30%~dynamic, Q ≥24 MJ/kg is long flame coal. 4 Symbols
4, 1 Classification indicators are expressed by the following symbols: 59
Dry ash-free volatile matter, normal;
H--—FDry ash-free hydrogen content, %
GR.1 (abbreviated as G)-
Bituminous coal adhesion index;
GB 57 51 86
The maximum thickness of the colloid layer of bituminous coal, millimeter; (mm) b
Oya expansion degree of bituminous coal, %;
The transmittance of coal sample, shrimp:
QA·GN
The constant humidity ash-free high calorific value of coal, MJ/kg. 4.2 The names of various types of coal can be represented by the following Chinese phonetic letters: wY-.
·Anthracite,
Bituminous coal,
Lean coal;
Lean lean coal,
Lean coal:
-Coking coal;
Fat coal;
-113 Coking coal#
Gas fat coal,
Linear coal;
1/2ZN
1/2 Medium sticky coal:
Weakly sticky coal:
Non-sticky coal:
Long flame coal:
Lignite.
5 Sampling and sample preparation
5.1 Coal samples for classification shall be collected in accordance with GB4.82-81, GB481-61, GB475-83 and the "Coal Sample Collection Procedure for Coal Resource Exploration" promulgated by the Ministry of Coal in 1979.
5.2 The preparation of coal samples for classification shall be carried out in accordance with GB474-83. Coal samples with ash content less than 10% do not need to be deashed, and coal samples with ash content greater than 10% need to be deashed with specified zinc oxide heavy liquid before classification. 5.3 Special anthracite for determination of bituminous coal agglomeration index shall be collected and quality-qualified in accordance with the provisions of the appendix of GB5447-85 "Determination Method of Bituminous Coal Caking Index".
6 Analysis method
The volatile matter during dry light ash period shall be determined in accordance with GB212-77: 6.2 The hydrogen content on dry ash-free basis shall be determined in accordance with CB476-79. 6.3 Adhesion index shall be determined according to GB 5417-85. 6.4 Maximum thickness of colloid layer shall be determined according to GB47964: 6.5 Oya expansion shall be determined according to GB5450-85. 6.6 Light transmittance shall be determined according to GB 2566-81. Calorific value shall be determined according to GB213-79.
6.8 Maximum intrinsic moisture of coal shall be determined according to GB 4632-81. 6
Additional remarks:
GB 5751-86
This standard was proposed by the Ministry of Coal Industry of the People's Republic of China and approved by the Beijing Coal Chemistry Research Institute of the Coal Science Research Institute. This standard was drafted by the Beijing Coal Chemistry Research Institute of the Coal Science Research Institute of the Ministry of Coal Industry, Anshan Thermal Energy Research Institute of the Ministry of Metallurgical Industry, Coalfield Geological Exploration Branch of the Ministry of Coal Industry and Anshan Iron and Steel Company of the Ministry of Metallurgical Industry. The main drafters of this standard are:
Anthracite: Chen Misheng, Tao Feiling, Zhang Xiuyi; Bituminous coal: Yang Jinhe, Chen, Feng Anzu, Qu Yusheng, Hao Qi, Shi Mingchang; Coal: Chen Wenmin, Zhu Chunsheng, Gong Zhicongxin This standard will be implemented for three years from October 1, 1986 and will be implemented from January 1989.When V≥2%-0%, the b value is temporarily set at 15%; when V≥2%-0, the b value is temporarily set at 220%. When the b value and the value are in conflict, the Y value shall prevail. 3. When the anthracite is divided into subcategories according to H and V: When the results are in conflict, the subcategories divided by H shall prevail. 4. V≥37.0%, P50% is bituminous coal. When P>30%~dynamic, Q ≥24 MJ/kg is long flame coal. 4 Symbols
4, 1 Classification indicators are expressed by the following symbols: 59
Dry ash-free volatile matter, normal;
H--—FDry ash-free hydrogen content, %
GR.1 (abbreviated as G)-
Bituminous coal adhesion index;
GB 57 51 86
The maximum thickness of the colloid layer of bituminous coal, millimeter; (mm) b
Oya expansion degree of bituminous coal, %;
The transmittance of coal sample, shrimp:
QA·GN
The constant humidity ash-free high calorific value of coal, MJ/kg. 4.2 The names of various types of coal can be represented by the following Chinese phonetic letters: wY-.
·Anthracite,
Bituminous coal,
Lean coal;
Lean lean coal,
Lean coal:
-Coking coal;
Fat coal;
-113 Coking coal#
Gas fat coal,
Linear coal;
1/2ZN
1/2 Medium sticky coal:
Weakly sticky coal:
Non-sticky coal:
Long flame coal:
Lignite.
5 Sampling and sample preparation
5.1 Coal samples for classification shall be collected in accordance with GB4.82-81, GB481-61, GB475-83 and the "Coal Sample Collection Procedure for Coal Resource Exploration" promulgated by the Ministry of Coal in 1979.
5.2 The preparation of coal samples for classification shall be carried out in accordance with GB474-83. Coal samples with ash content less than 10% do not need to be deashed, and coal samples with ash content greater than 10% need to be deashed with specified zinc oxide heavy liquid before classification. 5.3 Special anthracite for determination of bituminous coal agglomeration index shall be collected and quality-qualified in accordance with the provisions of the appendix of GB5447-85 "Determination Method of Bituminous Coal Caking Index".
6 Analysis method
The volatile matter during dry light ash period shall be determined in accordance with GB212-77: 6.2 The hydrogen content on dry ash-free basis shall be determined in accordance with CB476-79. 6.3 Adhesion index shall be determined according to GB 5417-85. 6.4 Maximum thickness of colloid layer shall be determined according to GB47964: 6.5 Oya expansion shall be determined according to GB5450-85. 6.6 Light transmittance shall be determined according to GB 2566-81. Calorific value shall be determined according to GB213-79.
6.8 Maximum intrinsic moisture of coal shall be determined according to GB 4632-81. 6
Additional remarks:
GB 5751-86
This standard was proposed by the Ministry of Coal Industry of the People's Republic of China and approved by the Beijing Coal Chemistry Research Institute of the Coal Science Research Institute. This standard was drafted by the Beijing Coal Chemistry Research Institute of the Coal Science Research Institute of the Ministry of Coal Industry, Anshan Thermal Energy Research Institute of the Ministry of Metallurgical Industry, Coalfield Geological Exploration Branch of the Ministry of Coal Industry and Anshan Iron and Steel Company of the Ministry of Metallurgical Industry. The main drafters of this standard are:
Anthracite: Chen Misheng, Tao Feiling, Zhang Xiuyi; Bituminous coal: Yang Jinhe, Chen, Feng Anzu, Qu Yusheng, Hao Qi, Shi Mingchang; Coal: Chen Wenmin, Zhu Chunsheng, Gong Zhicongxin This standard will be implemented for three years from October 1, 1986 and will be implemented from January 1989.
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