전기 저항을 이용한 부유선별공정 광액-포말 경계 검출 기법
Detection of Boundary between Pulp and Froth in Flotation Process Using the Measurement of Electrical Resistance
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참고문헌
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초록
부선 공정에서 광액과 포말의 경계 검출은 공정제어를 위한 가장 중요한 측정 변수이다. 경계의 위치(높이)에 따라서 광액, 공기 및 시약의 공급량을 결정하며, 이에 따라 생산물의 품위 및 생산량에도 영향을 준다. 이 논문에서는 실험실에서 포말 생성기를 제작하여 다양한 조건의 포말에 대해서실시간 저항 측정 및 분석을 수행했으며, 전기 저항을 측정 이론을 이용하여 빠른 응답을 목표로 측정 장치에 대한 설계를 진행했다. 그 결과 경계치 검출을 위해서 저항값 및 저항비 이용을 제안했으며, 실제 부선 공정에 적용하여 성공적으로 광액과 포말의 경계를 검출할 수 있음을 확인했다. 제안한 방법은 부선 공정의 정말한 제어를 위한 측정시스템에 적용이 가능하며, 나아가 생산량 극대화를 위한 선광 공정 자동화에도 기여할 것으로 기대된다.
Abstract
Detection of the boundary between pulp and froth is critical to controlling the flotation process and developing excellent automated mineral processing systems. The amount of pulp, air, and reagent affects the grade and capacity of products and is determined by the level of the boundary. This paper suggests a practical method to detect the boundary by measuring electrical resistance. A froth generator in laboratoryis used to characterize electrical resistance for various conditions. Then, electrodes and a data acquisition system are designed in the view of fast response, which is an important factor in automated mineral processing. Two methods to detect the boundary using the electrical resistance and ratio are suggested and validated by application to a typical flotation process. The proposed methods are expected to achieve excellent process automation, thereby, maximizing production capacity.
참고문헌 (12)
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