The ash shrinkage starting temperature is an important property of ash melting behaviour. It is defined as the temperature at which the area of the ash test piece falls below 95% of the original test piece area at 550 C. This shrinkage may be due to a number of factors, including the liberation of carbon dioxide, volatile alkali compounds, and/or sintering.

This property is determined in a reducing atmosphere using a carbon monoxide/carbon dioxide gas mix or a hydrogen and carbon dioxide gas mix. This characteristic temperature can also be determined in an oxidising atmosphere, using air or carbon dioxide, using analysis package P41 - Ash Melting Behaviour (Oxidising Conditions).

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Analysis Packages for Ash Shrinkage Starting Temperature (Reducing)

The Celignis Analysis Package(s) that determine this constituent are listed below:

P42   Ash Melting Behaviour (Reducing Conditions)
Ash Shrinkage Starting Temperature (Reducing), Ash Deformation Temperature (Reducing), Ash Hemisphere Temperature (Reducing), Ash Flow Temperature (Reducing) Further Details

P50   Ultimate Combustion Package

Volatile Matter, Fixed Carbon, Moisture, Ash, Carbon, Hydrogen, Nitrogen, Sulphur, Oxygen, Gross Calorific Value, Net Calorific Value, Chlorine, Ash Shrinkage Starting Temperature (Reducing), Ash Deformation Temperature (Reducing), Ash Hemisphere Temperature (Reducing), Ash Flow Temperature (Reducing), Aluminium, Calcium, Iron, Magnesium, Phosphorus, Potassium, Silicon, Sodium, Titanium Further Details

P393   Biochar Thermal Properties Deluxe

Moisture, Ash Content (815C), Carbon, Hydrogen, Nitrogen, Sulphur, Oxygen, Chlorine, Volatile Matter, Fixed Carbon, Aluminium, Calcium, Iron, Magnesium, Phosphorus, Potassium, Silicon, Sodium, Titanium, Gross Calorific Value, Net Calorific Value, Ash Shrinkage Starting Temperature (Reducing), Ash Deformation Temperature (Reducing), Ash Hemisphere Temperature (Reducing), Ash Flow Temperature (Reducing) Further Details

P394   Biochar Thermal Properties Ultimate

Thernogram - Under Nitrogen, Thermogram - Under Air, Moisture, Inherent Moisture, Ash Content (815C), Carbon, Hydrogen, Nitrogen, Sulphur, Oxygen, Organic Carbon, Inorganic Carbon, Chlorine, Volatile Matter, Fixed Carbon, Aluminium, Calcium, Iron, Magnesium, Phosphorus, Potassium, Silicon, Sodium, Titanium, Gross Calorific Value, Net Calorific Value, Ash Shrinkage Starting Temperature (Reducing), Ash Deformation Temperature (Reducing), Ash Hemisphere Temperature (Reducing), Ash Flow Temperature (Reducing) Further Details

P399   Biochar Complete Evaluation Package

Thernogram - Under Nitrogen, Thermogram - Under Air, Moisture, Inherent Moisture, Ash Content (815C), Carbon, Hydrogen, Nitrogen, Sulphur, Oxygen, Organic Carbon, Inorganic Carbon, Chlorine, Volatile Matter, Fixed Carbon, Specific Surface Area (Nitrogen Gas Adsorption), Calcium, Iron, Magnesium, Phosphorus, Potassium, Silicon, Sodium, Titanium, Gross Calorific Value, Net Calorific Value, Ash Shrinkage Starting Temperature (Reducing), Ash Deformation Temperature (Reducing), Ash Hemisphere Temperature (Reducing), Ash Flow Temperature (Reducing) Further Details

Equipment Used for Ash Shrinkage Starting Temperature (Reducing) Analysis

Additional Material

We can determine the Ash Shrinkage Starting Temperature (Reducing) content of biomass, click here to learn more about our various biomass analysis methods.