Experimental Study On The Effect Of Cullet And Batch Water Content On The Melting Behaviour Of Flint And Amber Container Glass Batches

The melting behaviour of two commercial flint and amber glass batches with varied cullet content (O, 40, 65% and 0, 40, 76% respectively) and batch water additions (0-5%) were investigated. The cullet was a blend of up to five industrial types and grades, including ground cullet. Local temperature, electrical conductivity, and thermal diffusivity were determined in 200g scale tests as a function of temperature, while the vertical distribution of the former two properties was determined by 10kg tests in 5cm high batch piles charged on top of a pre-heated glass melt (7kg). The set of methods applied was established as a service tool for the quantitative comparison of the batch-to-melt conversion of different batches in general.