GB/T 31424-2015Determination of coal ash viscosity (English PDF)

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.

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 °C ~

A temperature measuring point 50 °C 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