When coal is combusted in the furnace of a power plant a powder-shaped residue or a glassy slag (clinker) forms and must be removed. Large coal furnaces suffer from clinker build-up and therefore expensive maintenance due to closure for removal of clinker. If the fusibility characteristics are known, control of temperature can avoid clinker formation.
Ash fusibility testing is designed to simulate as closely as possible the behaviour of coal ash when heated in either a reducing or an oxidising atmosphere, giving data indicating temperatures for sintering, melt and flow.
The new Carbolite CAF G5 ash fusibility furnace has been designed to test ash fusibility and optionally the increasingly popular determination of biomass or solid recovered fuels testing.
The CAF G5 comes with a new software package offering the choice of automatic or manual analysis of samples. For manual analysis a grid overlay feature ensures accurate comparisons of the height and width of each sample.
The CAF G5’s automatic and continuous recording of digital images and increased camera resolution along with a zoom facility provide excellent quality test results. The large diameter work tube ensures that only one furnace is required to test more than six test pieces at any one time and fast heat up and cool down rates allow up to three tests per day to be completed.
An optional work tube integrated lighting system is also available when testing low ‘initial deformation’ temperature of SRF or biomass samples. The CAF G5 is designed to conform to relevant ISO, ASTM, DD and PD Standards