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GB/T 18856.6-2008: Test methods for coal water mixture -- Part 6: Determination of the density
Status: Valid GB/T 18856.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 18856.6-2008 | English | 169 |
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Test methods for coal water mixture -- Part 6: Determination of the density
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GB/T 18856.6-2008
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| GB/T 18856.6-2002 | English | 279 |
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Test methods for quality of coal water mixture -- Part 6: Determination of calorific value of coal water mixture
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GB/T 18856.6-2002
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Basic data | Standard ID | GB/T 18856.6-2008 (GB/T18856.6-2008) | | Description (Translated English) | Test methods for coal water mixture -- Part 6: Determination of the density | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D21 | | Classification of International Standard | 75.160 | | Word Count Estimation | 7,744 | | Date of Issue | 2008-07-29 | | Date of Implementation | 2009-04-01 | | Older Standard (superseded by this standard) | GB/T 18856.9-2002 | | Quoted Standard | GB/T 6682 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.12 (Total No.125) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for determining the density of coal water slurry feed, reagents, equipment, measuring step, results of calculation and precision. This section applies to a variety of CWS. | GB/T 18856.6-2008: Test methods for coal water mixture -- Part 6: Determination of the density---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test methods for coal water mixture Part 6. Determination of the density
ICS 75.160
D21
National Standards of People's Republic of China
Replacing GB/T 18856.9-2002
CWS Test Method
Part 6. Density Determination
Posted 2008-07-29
2009-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This revision of GB/T 18856 "CWS Test Method" is divided into seven sections.
--- Part 1. Sampling;
--- Part 2. Determination of the concentration;
--- Part 3. screening tests;
--- Part 4. Determination of apparent viscosity;
--- Part 5. Determination of stability;
--- Part 6. Determination of density;
Part --- Article 7. pH value measurement.
This standard replaces GB/T 18856-2002 "Test methods for quality of coal water."
This standard compared with GB/T 18856-2002, the main differences are as follows.
--- Deleted - Part 6. Determination of calorific value coal water slurry;
--- Deleted Part 7. CWS industry analysis;
--- Deleted Part 8. Determination of total sulfur in coal water slurry;
--- Deleted Part 10. Determination of the ash fusion CWS;
--- Deleted Part 11. Determination of Hydrocarbon CWS;
--- Deleted Part 12. CWS nitrogen determination method;
--- Deleted Part 13. CWS ash component measurement method.
Delete the contents were integrated into the standard measurement method related to coal and coal ash.
This section edition GB/T 18856 Part 6.
This Part replaces GB/T 18856.9-2002 "CWS Quality Test methods - Part 9. CWS method of density determination."
This section compared with the GB/T 18856.9-2002, the main changes are as follows.
--- Deleted Table 2 indicates an error symbol% \u200b\u200b(2002 Edition Chapter 8, Chapter 9 edition);
--- Corrected the formula (2) Error (2002 edition Chapter 7, Chapter 8 edition).
This part is proposed by the China Coal Industry Association.
This part of the National Standardization Technical Committee centralized coal.
This section is drafted. CCRI coal analysis laboratory, the National Engineering Research Center CWS.
The main drafters of this section. Fu Cong, Wang Min.
This part of the standard replaces the previous editions are.
--- GB/T 18856.9-2002.
CWS Test Method
Part 6. Density Determination
1 Scope
GB/T 18856 provisions of this part of the summary methods, reagents, equipment, coal-water slurry density measurement, the measuring step, and the results of the calculation
Precision.
This section applies to a variety of CWS.
2 Normative references
The following documents contain provisions which, through reference GB/T 18856 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encouraged to reach under this section
Research into whether the parties to the agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
Laboratory use specifications and test methods GB/T 6682 Analysis
3 Method summary
Density bottle method with a certain amount of time by measuring the quality of coal water slurry sample of 20 ℃ to its volume (ie the volume of water discharged) measured CWS
Density.
4 Reagents
4.1 Distilled water (without CO2)
This part of the water used for the third grade water requirements GB/T 6682 may require. Freshly boiled and cooled to room temperature.
4.2 lotion
4.2.1 light gasoline or other solvents. to remove contaminants on the density bottle and stopper.
4.2.2 chromic acid lotion. Weigh potassium dichromate (GB/T 642) 20g in 500mL beaker, add 40mL water, heating dichromate
Potassium is dissolved, cooled to room temperature. Under constant stirring, 360mL of concentrated sulfuric acid (GB/T 625) was added to the slowly cooled to room temperature
Solution.
5 Equipment
5.1 Density bottle. volume of 60mL. As shown in Figure 1.
5.2 mercury thermometers. 0 ℃ ~ 50 ℃, indexing 0.2 ℃.
5.3 Analysis of balance. a sense of the amount of 0.0001g.
5.4 constant temperature water bath. to maintain the water temperature (20 ± 0.5) ℃.
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