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Determination of coal ash viscosity
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Basic data
| Standard ID | GB/T 31424-2015 (GB/T31424-2015) |
| Description (Translated English) | Determination of coal ash viscosity |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | D21 |
| Classification of International Standard | 73.040 |
| Word Count Estimation | 11,194 |
| Date of Issue | 2015-05-15 |
| Date of Implementation | 2015-07-01 |
| Quoted Standard | GB/T 212; GB 474; GB/T 483; GB/T 1593 |
| Regulation (derived from) | National Standard Announcement 2015 No. 15 |
| 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 terms and definitions of torque with a wire-type viscometer dynamic viscosity of coal ash, method summary, reagents and materials, equipment, sample preparation, test preparation, measurement procedure, results are expressed, the method precision and test reports. This Standard applies to coal ash and slag. |
GB/T 31424-2015: Determination of coal ash viscosity
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Determination of coal ash viscosity
ICS 73.040
D21
National Standards of People's Republic of China
Ash viscosity measurement method
Issued on. 2015-05-15
2015-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Coal Industry Association.
This standard coal by the National Standardization Technical Committee (SAC/TC42) centralized.
This standard was drafted. Detection of Coal Science Research Institute Branch, Shanxi Institute of Coal Chemistry.
The main drafters of this standard. Wuzeng Li, white Jin, Chen Baohua, Wang Qiuxiang, Ling science, Levin.
Ash viscosity measurement method
1 Scope
This standard specifies the terms and definitions wire torque type viscometer dynamic viscosity of coal ash, Method summary, reagents and materials, instruments
Equipment, sample preparation, test preparation, measurement procedure, results are expressed, precision of the method and test reports.
This standard applies to coal ash and slag.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Analysis Method GB/T 212 coal
GB 474 coal sample preparation
GB/T 483 coal analysis test methods - General provisions
GB/T 1598 platinum and rhodium 10 - platinum thermocouple wire, platinum and rhodium 13 - platinum thermocouple wire, platinum and rhodium 30 - 6 platinum and rhodium thermocouple wires
3 Terms and Definitions
GB/T 483 as defined in the following terms and definitions apply to this document.
3.1
Ash viscosity ashviscosity
Ash in the molten state a measure of the flow resistance.
[GB/T 483-2007, the definition 3.3.33]
3.2
Dynamic viscosity dynamicviscosity
Each area of \u200b\u200b1m2 and two fluid 1m apart, the internal friction at a speed 1m/s of the relative movement generated.
3.3
Critical Viscosity criticalviscosity
Ash viscosity - temperature curve in the intersection of two tangents temperature corresponding to the critical temperature viscosity, viscosity at this temperature is the critical viscosity.
4 Method summary
The ash made appropriately sized pellets, one by one into a high temperature furnace has been heated to a temperature of crucible melting, the wire torque formula
The viscometer spindle is inserted and allowed to melt at a constant speed. Use cool determination, beginning from the highest temperature every 20 ℃ ~
A temperature measuring point 50 ℃ wire twist angle until the viscosity is greater than 50 (or 100) Pa · s. Isolated on the twist angle of each temperature curve - from viscosity
Viscosity of the point at a temperature as abscissa and ordinate viscosity draw temperature - viscosity curve.
5 Reagents and materials
5.1 Viscosity Standards
5.1.1 Silicone oil. viscosity values \u200b\u200bare known (about 1Pa · s, 5Pa · s, 10Pa · s, 25Pa · s, 50Pa · s and 100Pa · s) of standard certified
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