STUDY ON SiO2 SEPARATION IN RICE HUSK CHARCOAL BY MECHANICAL METHOD

Abstract

In Viet Nam, about 8.4 million tons of rice husks are released into the environment every year. Therefore, it is necessary to study the effective use of rice husks, avoid waste and environmental pollution. Coal husk charcoal to make materials in the lines as a water filter, ethanol production, fillers, additives, activated carbon, semiconductors...is a new direction. In rice husk charcoal, there are 55% C and 45% SiO₂ soit is necessary to study and separate two substances to improve application efficiency. Many topics research separation process but only get one of two substances while discharging a large number of other chemicals during the separationprocess. The research of separating SiO₂ in rice husk charcoal by the mechanical method will overcome these disadvantages. The initial mechanical separation process has yielded results, with the rich C coal, the SiO₂ ratio has decreased the most by 8% and in the rich SiO₂, the C content has decreased by 11% compared to the original rice husk with suction force airflow 0.23 m³/h.