Flux boilers
A river boiler (also known as a potash boiler ) is a former occupation in the glass industry .
A flux boiler took ordinary wood ash from the ash burner , leached out its constituents with water and thickened it into potash . He then handed these over to the glass manufacturers. Potash (chemical: potassium carbonate) is a white powder that is still added to the molten glass today. The name flux boiler originated from the boiling ("boiling") of the flux required for glass production . The factories in which the river boilers worked were called river boilers .
Individual evidence
- ↑ Josef Franz Dirscherl: The East Bavarian border mountains as the base of the glass industry. Dissertation 1938