The rice husk ash process produces an organic amorphous silica of very small particle size.
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Plant Ash Toxicity
The hazards of using plant and wood ash in ceramic glazes
|Materials||Rice Straw Ash|