Rice husk ash is increasingly being used in silicon production for electronics, which is required to be cleaned off water soluble alkali (and alkaline earth, to some extent) oxides. In Agriculture dominant area, rice husk ash is simply dumped outdoor as landfills by Rice mills. would it be better to use the dumped ashes for further purification to electronics, especially if not spoiled by soil/clay?
Dear Sumit,
welcome,
The percentage of the silica in the ash of rice hask makes about 85-95 percent which is much lower than that of silica in mines of about 99 percent. In order to increase the percent of silica in the ash one has to undertake an extraction process which may be costly. However, if one reaches 99.8 percent one can use it in silicon extraction for electronic industry.
Please follow this topic in the link: http://www.ijerd.com/paper/vol12-issue3/Version-2/H12326974.pdf
Best wishes
Dear Summit,
while it seems to be a great idea to use rice husk ash for silicon production (and there are a number of patents about processing this ash for silicon and silicon carbide production - see e.g. https://www.poerner.at/technologies/ricehusks/ ), there's a number of topics to be considered:
Summarizing:
I'm not sure that using rice husk (ash) for silicon exploitation will last longer than for a blink.
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