열분해법(thermal decomposition method)을 이용하여 금 정광으로부터 비소를 제거하기 위해 $700^{circ}C$에서 반응시간을 변화시키면서 실험을 진행하였다. 또한, 금 정광으로부터 휘발된 비소는 bag-filter를 이용하여 회수하였다. 정광중의 비소 함량은 $700^{circ}C$에서 1시간 소성한 결과 12.62 wt.%에서 1.40 wt.%로 급격히 감소하였으며, 2시간 이후부터는 1 wt.%이하로 감소하여 대략 95%의 비소 제거율을 보였다.
A study on the removal of arsenic from gold concentrate was conducted using thermal decomposition method at $700^{circ}C$ as a function of reaction time. In addition, the arsenic removed from the concentrate was also collected in the bag-filter as a form of AsS. The content of arsenic in the concentrate was dramatically decreased from 12.62 wt/% to 1.40 wt.% for 1 hour and even lower than 1 wt.% after two hours. The removal efficiency of arsenic was finally achieved to be about 95% after 2 hours at a given temperature.
