Silica Produced From Rice Husk Ash. Rice Husk Ash Silica Manufacture. Emerging Investment Opportunities in agriculture waste processing Industry

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Silica Produced From Rice HuskAsh. Rice Husk Ash Silica Manufacture. Emerging Investment Opportunities inagriculture waste processing Industry

Silicaoccurs as amorphous to crystalline form in many types of igneous, metamorphic,and sedimentary rocks, but in sediments and sedimentary rocks much of thesilica is detrital material. The chief forms of silica are hydrous opal,cryptocrystalline chalcedony, and crystalline quartz.

Asa byproduct of the combustion of rice husk to generate energy, rice husk ash(RHA) is formed by silica and carbon, apart from small amounts of otherconstituents. Several treatments can be used to increase the purity of thesilica obtained, or even produce pure silica. Rice Husk Ash. Rice husk ash(RHA) is a highly reactive pozzolan obtained when rice husks are calcinatedbelow the crystallization temperature at 780°C (Yu et al 1999). 

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