Figure 3.
The image shows a bar graph illustrating total energy measured in megajoules per kilogram for various types of clay, specifically B 1, B 2, C 1, C 2, C 3, C 4, and D 1. The graph features two sets of bars, blue bars representing the energy required for the drying process and orange bars representing the energy needed for dehydroxylation. The vertical axis indicates total energy with values ranging from 0 to 3 megajoules per kilogram, while the horizontal axis denotes the different clay types. The data is organised in a side by side comparison for each clay type, allowing for straightforward visual analysis of the differences in energy requirements for the two processes.Total energy required for production of calcined clays