Some standard content:
GB/T3715--1996
This standard is a revision of GB3715-91 based on the international standard IS(）1213-2:1992 "Terms for Solid Fuels". It is equivalent to the international standard in terms of technical content and the same in terms of writing rules, with only slight differences in format. Through the revision, this standard is further aligned with the international standard to meet the needs of international trade, science and technology, and economic exchanges. In order to combine the specific conditions of my country, the relevant common terms of coal quality and coal analysis in the "Coal Science and Technology Terms" (June 1994) approved by the National Terminology Committee of my country and the first part of GB3358.1-93 "Statistical Terms" General Statistical Terms are also adopted in the revision, making the revised terminology standard more suitable for China's national conditions. The terms in this standard include the following 7 parts: coal and its products;
classification of coal;
sampling and sample preparation of coal;
coal quality analysis:
method of expressing coal quality analysis results;
coal processability test;
commonly used mathematical and statistical terms for coal quality analysis.
According to the provisions of GB/T1.11993, the foreword and ISO foreword are added. In order to make this standard equivalent or equivalent to international standards, some terms have been significantly revised. 1. Add some new terms. For the terms that are in IS () 1213-2: 1992 but not in GB3715-91, they are basically adopted as equivalent; in addition, according to the "coal science and technology terms", the commonly used terms in China are listed in the revised standard and given clear definitions. 2. The definitions of some terms are modified to make the new terminology standard technically equivalent to ISO and make the definitions more complete and accurate. 3. The English translations of some terms that are inconsistent with ISO have been modified according to ISO terminology to make the revised English names of the terms fully consistent with IS.
4. The arrangement order of some terms has been changed to make the arrangement of the revised terms more reasonable. This standard shall be implemented from July 1, 1997. All standard submissions that adopt the terms of this standard shall comply with the provisions of this standard from July 1, 1997.
This standard shall replace GB3715--91 from the date of entry into force. This standard was proposed by the Ministry of Coal Industry of the People's Republic of China. This standard is under the jurisdiction of the National Coal Standardization Technical Committee. This standard was drafted and interpreted by the Beijing Coal Chemistry Research Institute of the China Coal Research Institute. The main drafters of this standard are Wu Chunlai, Duan Yunlong, Chen Peng, Li Wenhua, and Chen Huaizhen. This standard was first issued in 1983 and revised in May 1991. 5--1996
GB/T3715
ISO1213 Foreword
ISO () (International Organization for Standardization) is a worldwide federation of national standardization bodies (ISO group members). The development of international standards is usually carried out by ISO's technical committees. Each group member has the right to send representatives to participate in the committee if it is interested in a subject for which a technical committee has been established. International organizations associated with ISO, both official and unofficial, may also participate in this work. Draft international standards accepted by the technical committees shall be submitted to the group members for voting. At least 75% of the group members participating in the vote must agree to publish them as international standards. International Standard ISO) 1213-2 was developed by ISO)/TC 27 Technical Committee on Solid Mineral Fuels. This standard replaces ISO Recommended Standards R1213-2: 1971 and R1213-3: 1971 and subsequent technical revisions. IS0) 1213 consists of the following parts: Solid fuels - Terminology Part 1: Terminology for coal preparation Part 2: Terminology for sampling, testing and analysis 1 Scope National Standard of the People's Republic of China Terms relating to properties and analysis of coal This standard specifies the terms and their translated names, definitions and symbols related to properties and analysis of coal. This standard applies to relevant standards, documents, teaching materials, books and manuals. 2 Referenced standards GB/T 3715-1996 Replaces GB 3715 1991 The following standards contain provisions that constitute the provisions of the standard by reference in this standard. At the time of publication of the standard, the versions shown are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards: IS()1213-2:1992 Terminology of solid mineral fuels Part 2 GB/T1.193 Guidelines for standardization Unit 1: Rules for the drafting and presentation of standards Part 1: Basic provisions for the preparation of standards GBT3358.1-93 Statistical terms 3 Terms 3.1 Coal and its products Term name Coal equivalent Commercial coal Washed coal English term Coal equivalent Run-mine coal Raw coal Commercial coal Washed coal coal
Approved by the State Bureau of Technical Supervision on December 19, 1996, Part - General statistical terms
A unified unit of measurement for solid organic combustible sedimentary rock
energy formed by the compaction, complex biochemical and physicochemical reactions and transformation of plant remains under the covering strata. Any energy source that can produce 29.27MJ/kg of low-grade heat can be converted into 1kg of coal equivalent value. Coal produced by coal mines without any processing. Coal after gravel of specified particle size (including pyrite and other impurities) is selected from raw coal. Coal sold as a commodity. Coal added after washing. Standard coal. Implementation of 199707-01. Term name. Screened coal. Granular coal. Limit rate. English term. Cleaned coal. Imictdtlings. Washery rejects. Islime. Screened coal. Size coal. Undersize coal. fraction
Upper limit
oversize fraction
siultra-large coal
(>100 mm)
large coal
largecoal
(>50 mm)
medium-sized coal
(25～50 mm）
small coal
small coal
(13~25 mm）
peacoal
(6~13 mm)
mixed lump coal
mixed lump coal
(≥13mm)
GB/T 3715--1996
Products produced by coal selection (dry or wet) that meet quality requirements
Products obtained after coal selection, with a quality between clean coal and ground stone
High-ash products discharged during coal washing
Washed coal with a particle size below 0.5mm
A type of washed coal product
Coal processed by screening
Particle size
Products produced by coal screening or washing, with a particle size lower limit greater than 6mm
Oversize products Mass percentage of the part with smaller particle size
Mass percentage of the part with larger particle size in the undersize product
Coal with particle size larger than 100 mm
Coal with particle size larger than 50 mm
Coal with particle size between 25 and 50 mm
Coal with particle size between 13 and 25 mm
Coal with particle size between 6 and 13 mm
Coal with particle size larger than 1.3 mm
2 Mixed medium-sized coal Mixed medium-sized coal with particle size between 13 and 80 mm 3.1.22
coal(13~80 mm)
mixed coal
(<50 mm）
coal with particle size less than 50 mm
fine coal
[Term name
English term
GB/T 3715-—1996
slack coal(<25 mm
particle size less than 25 mm or less than 13 mm
or<13 mm)
fine coal
(<6 mm)
refuse
dirt band
refuse-content
[Term name
Subbituminous coal
Anthracite
English term
Coal with a particle size of less than 6 mm
Rocks mixed into the coal from the roof, floor or coal seam during mining and excavation
Mineral layer sandwiched in the coal seam
1The mass percentage of rock with a particle size greater than 50 mm in coal
The major categories into which coal is divided according to the degree of coalification and process performance indicators
The major categories are further subdivided according to the nature and use of coal
The stage of the depth of coalification
brown coal/lig-
subbituminous
bituminous coal
anthracite
hard coal
Coal with a low degree of coalification, mostly brown and dull in appearance, containing high intrinsic moisture and varying amounts of humic acid
In the international coal seam coal classification, low-rank coal with a water-free ash-free high calorific value equal to, greater than 20 to less than 24 MJ/kg
Coal with a coalification degree higher than lignite but lower than anthracite, characterized by a wide range of volatile matter yields, ranging from no coking to strong coking when coking alone, and smoke when burning
Coal with a high degree of coalification, low volatile matter, high density, and high ignition point , non-adhesive, usually smokeless when burning
A general term for bituminous coal and anthracite, or refers to coal with a constant humidity ash-free high calorific value equal to or greater than 24MI/kg or less than 24MJ/kg but
the average random reflectivity of the vitrinite group is equal to or greater than 0.5%
Term name
Long flame coal
Non-sticky coal
Weakly sticky coal
Medium sticky coal
1/3 coking coal
Gas fertilizer coal
English term
long flame coal
I non-caking coal
weaklycaking
1/2 medium
caking coal
gas coal
1/3 coking coal
gas-fat coal
fat coal
primary coking
lean coal
I lean coal
meager
meager coal.
GB/T 3715 -
Bituminous coal with the lowest degree of metamorphism and the highest volatile matter, generally does not coke and has a long flame when burned.Bituminous coal with a low degree of metamorphism, a wide range of volatile matter and no caking
Bituminous coal with a low degree of metamorphism and a wide range of volatile matter. The coking property is between non-coking coal and 1/2 medium coking coal
The coking property is between gas coal and weak coking coal
, and the volatile matter range is wide
The bituminous coal with low metamorphism and high volatile matter. When coking alone, the coke is mostly slender, brittle, and has more longitudinal cracks
The strong coking property
coal with medium or high volatile matter between coking coal, fat coal and gas coal. When coking alone, it can produce coke with high strength
Bituminous coal with high volatile matter and strong coking property. When coking with single coal, it can produce a large amount of coal gas and colloid, but it cannot produce coke with high strength. The bituminous coal with medium metamorphism. When coking alone, it can produce coke with good melting property, but it has more transverse cracks, and there is honeycomb at the root of the coke
Bituminous coal with high metamorphism. When coking alone, the resulting colloid has good thermal stability, and the resulting coke has large size, few cracks, and high strength. Bituminous coal with a high degree of metamorphism. When coking alone, most of them can form coke. Coke has large size, few cracks, poor melting, and low wear resistance
Bituminous coal with a high degree of metamorphism, poor adhesion, and low volatility. The coking property is lower than that of lean coal
Bituminous coal with a high degree of metamorphism and the lowest volatile content. Non-coking
Main coking coal
Term name
Weathered coal
Natural coke
English term
weathered coa!
natural coke
3.3 Sampling and sample preparation of coal
Term name
Sampling unit
Random sampling
English term
coal sample
sampling
sampling unit
increment
gross sample
partial sample
random
Systematic sampling
multiple sampling
systematic sam-
reduplicate
sampling
GB/T 3715
Coal with significantly changed properties such as increased oxygen content, reduced calorific value and containing regenerated humic acid due to weathering
Coal is invaded by magma and is heated and dried under the influence of high temperature and hydrothermal fluids and volatile gases in the magma to form coke
A representative part of the sample taken according to the prescribed method to determine certain characteristics of coal. The process of taking representative coal samples according to the prescribed method
A total sample of coal taken from a batch of coal
A quantity of coal. A batch of coal can be one or more sampling units, an independent amount of coal that needs to be measured for overall properties, a sample taken from a single operation of the sampling device or a full section of a coal flow, a coal sample formed by combining all sub-samples taken from a sampling unit, a sub-sample that can represent a part of the entire sampling unit, for the preparation of laboratory samples or test samples. When taking sub-samples, no artificial will is imposed on the sampling location or time, so that coal from any location can have the opportunity to be sampled. Sub-samples are taken at the same time, space or mass intervals, but the first sub-sample is randomly taken within the and intervals, and the remaining sub-samples are taken at the selected intervals. Several sub-samples are taken from a sampling unit and placed in each container in turn. The coal sample in each container constitutes a coal sample of similar quality, each coal sample can represent the coal quality of the entire sampling unit
natural coke
Term name
coal seam coal sample
stratified coal sample
mineable coal sample
production coal sample
commercial coal sample
floating coal sample
sinking coal sample
laboratory
--general analysis
analysis coal sample
coal sample preparation
coal sample crushing
coal sample mixing
coal sample reduction
English term
seam-sample
stratified
sample
workable seam
sample
sample for pro-
duction
sample for com
mercial coal
float sample
sink sample
laboratory sam-
GB/T 3715—1996
Coal sample taken from each coal seam in the mining working face, exploration lane or tunnel according to regulations
Samples taken from each natural layer of coal and interlayer according to regulations
All samples (including coal layers and interlayers) to be taken according to the specified thickness of coal mining
Coal sample that can represent the physical, chemical and technological characteristics of coal in the production coal seam mined in a full shift under normal production conditions
Coal sample representing the average properties of commercial coal,
Coal sample that floats on the top after separation with a certain density of heavy liquid
Coal sample that sinks to the bottom after separation with a certain density of heavy liquid
Coal sample reduced from the total sample or medium sample and sent to the laboratory for further preparation
general analysis
1 The coal sample is reduced to a particle size less than
coal sample
certifide
refer-
cnce coal
sample prepara-
sample
0.2mm, and reach
equilibrium with the surrounding air humidity. Coal sample that can be used for most physical and
chemical properties determination
Coal sample with high uniformity, good stability and accurate value
The process of making coal sample reach the state required by the test, including crushing, screening, mixing, reducing and air drying of coal sample
reduc-
The process of reducing the particle size of coal sample by mechanical or artificial methods during the sample preparation process
sanple mixing
sample division
The process of mixing the coal sample evenly
In the preparation of dry samples, the process of dividing the sample into several representative parts and keeping one or more parts
Air in
Dry the coal sample
Term name
Cone four
Divider
3.4 Coal quality analysis
English term
coning
quartering
riffle
Term name
Industrial analysis
External moisture
GB/T 3715
and: Distribute the coal sample evenly from the end of the page into a circular body and then press it into a circular cake with uniform thickness and divide it into four equal sectors, and take the relatively weak part as the coal sample. Method of shrinking the coal sample
A tool for shrinking the coal sample composed of a series of parallel and alternating
inclined grooves of equal width
English terms
proximate anal-
moisture;
surface
moisture in air-
intrinsic moisture
dried-coal;
a general term for the analysis of moisture, ash, volatile matter and fixed carbon
the moisture lost when the coal sample reaches equilibrium with the humidity of the surrounding air under certain conditions
The coal sample reaches air drying under certain conditions! Moisture retained in the in-"state"
herent moisture
total moisture
·Generally analyzed coal sample
highest internal moisture
chemical moisture
total moisture
the sum of the external moisture and intrinsic moisture in the coal! Under laboratory conditions, the moisture in the airdried sample is the moisture contained in the coal sample when it reaches a roughly equilibrium with the humidity of the surrounding air. The intrinsic moisture of the coal sample measured when it reaches equilibrium at a temperature of 30°C and a relative humidity of 96%. The intrinsic moisture of the mineral substance after all the water is removed. matter
Remaining moisture
Inorganic matter in coal, excluding free water but including combined water
, the residue obtained after the coal sample is completely burned under normal coking conditions
1Analysis of coal
Dry coal sample
Sample moisture
Term name
Extraneous ash
English term
extraneous ash
3.4.11Inherent ash
Carbonate
Bon dioxide
Volatile matter
Char residue
Fixed carbon
Fuel ratio
Organic sulfur
Inorganic sulfur
Elemental sulfur
Pyritic sulfur
Sulfate sulfur
Fixed sulfur
True relative
carbonate
bon dioxide
volatile matter
characteristic of
char residue
fixed carbon
Ifuel ratio
organic sulfur
inorganic
fur;mineral sulph-
elemental sulfur
total sulfur
pyritic sulfur
GB/T 3715--1996
Ash formed by minerals mixed into coal during coal production
Ash formed by minerals in the original coal-forming plants and that enter the coal seam during the coal-forming process
Carbon dioxide in the form of carbonate in coal
The mass loss of a coal sample after it is isolated from air and heated under specified conditions and corrected for moisture
The caking and coking properties of the residue of a coal sample after the determination of volatile matter
From the determination of coal The residue after deducting the ash from the volatile matter of the sample, usually calculated by subtracting moisture, ash and volatile matter from 100. The ratio of fixed carbon to volatile matter in coal. Sulfur combined with organic matter in coal. The general term for sulfide sulfur, pyrite sulfur, sulfate sulfur and elemental sulfur in the minerals of coal. Sulfur existing in a free state in coal. The sum of inorganic sulfur and organic sulfur in coal. Sulfur existing in the form of pyrite or marcasite in the minerals of coal. Sulfate sulfur. chlorine
density
relative
Sulfur in the form of sulfate in coal minerals
Sulfur in the residue after thermal decomposition of coal
The sum of inorganic phosphorus and organic phosphorus in coal
The sum of inorganic chlorine and organic chlorine in coal
The ratio of the mass of coal (excluding coal pores)
at 20C to the mass of the same volume of water
Mineral sulfur||t t||True specific gravity
Term name
Apparent relative
Bulk density
Block density
Porosity
Heating value
Constant volume high
Positive calorific value
Constant volume low
Positive calorific value
Element analysis
Ash composition
Ignition temperature
English term
apparent
tive density
hulk density
density of lump
porosity
GB/T 3715---1996
ratio of the mass of coal (including coal pores) to the mass of the same volume of water at 20(h)
mass of unit volume of loose coal in a container under specified conditions
mass of unit volume of a whole piece of coal
percentage of the capillary pore volume of coal to the apparent volume
(including tender pores) of coal
calorific
heat generated by the combustion of unit mass of sample in an oxygen bomb under excess oxygen calorific
at constant volume
net calorific val.
lle at constant$
volume
ultimate analy-
ash analysis
ignition temper-
methods of expressing coal quality analysis results
term name
as received basis
dry basis
under dry basis
dry free
dry free ore
material basis
constant humidity free
English term
as reccived ba-
air dried basis
dry basis
dry ash-free ba-
The heat generated by the combustion of the coal sample in the oxygen bomb minus the correction values of sulfur and nitrogen
The calorific value of the constant volume high calorific value of coal minus the latent heat of evaporation of water in the coal sample and water generated during combustion
The general term for coal quality analysis of five items: carbon, hydrogen, oxygen, nitrogen and sulfur
Analysis of the elemental composition of ash (usually expressed as oxides)
The lowest combustion temperature at which coal releases enough volatile matter to form a combustible mixture with the surrounding atmosphere
Based on the coal in the received state
Based on the coal in a state of equilibrium with air humidity
Based on the coal in a hypothetical water-free state
Based on the coal in a hypothetical water-free and ash-free state
dry mineral free
Based on the hypothetical coal without water and minerals
ashfree
Based on the hypothetical coal with the highest inherent moisture content and without ash
Bulk density
Apparent specific gravity,
Bulk specific gravity
Porosity
Application basis
Analysis basis
Combustible basis
Organic basis
Term namebzxz.net
Constant humidity free
Mineral basis
English term
mineral-
matter free basis
coking property
caking property
swelling property
plastic property
swelling property
plastic layer
plastic layer
maximum thickness
plastic layer
volume curve
shrinkage
Roga index
caking index
swelling property
plastic property
swelling property-
plastometer
maximum thick-
ness of plastic
volume curve of
plastic layer
final contraction
metric
plasto-
shrink
Roga index
caking index
crucible
swelling
GB/T3715.-.- 1996
Based on the assumed coal with the highest internal moisture content and no minerals
The properties of coal formed into coke by dry distillation
The ability of coal to adhere to itself or to added inert substances during dry distillation
The viscosity, flowability, and air permeability of the colloid formed by coal during dry distillation
The volume expansion or contraction of coal during dry distillation
An index proposed by Sapozhnikov to characterize the plasticity of bituminous coal, expressed in terms of the maximum thickness Y value of the colloid layer and the final shrinkage X value
The maximum value of the difference between the upper and lower layers of the colloid layer measured by the probe in the determination of the bituminous coal colloid layer index
The curve of the upper surface position of the colloid recorded in the determination of the coal colloid index as a function of temperature
The distance between the end point of the volume curve and the zero line at a temperature of
730℃ in the determination of the bituminous coal colloid index
Proposed by Roca, under specified conditions, the coal is completely mixed with standard anthracite, and the mechanical strength of the coke obtained after carbonization is used to determine the cohesive force of the coal
The ability of bituminous coal to adhere to special anthracite after heating under specified conditions
The expansion degree of the coke block obtained by heating coal in a crucible under specified conditions is used to characterize the expansion and plasticity index of coal
G index
Free expansion
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