Abstract:
A method for collecting copper and molybdenum remaining in effluent generated in a manufacturing process is provided to reduce mineral import by recycling the copper and the molybdenum with a counter-current extraction mode. A method for collecting copper and molybdenum remaining in effluent generated in a manufacturing process includes the following steps of: collecting a molybdenum ion in an organic solvent by adding an Amine series organic solvent(S10); separating the collected organic solvent from the effluent(S20); performing a counter-current extraction process of the molybdenum ion by adding an ammonia solution(S30); and collecting molybdenum by adding acid on the ammonia solution(S40).
Abstract:
The present invention relates to a recovery method of high-purity silicone from a waste solar cell or a defective solar cell. The recovery method of high-purity silicone according to the present invention comprises the steps of: soaking a solar cell into an acidic solution to primarily remove impurities; soaking the solar cell of which impurities have been primarily removed into a basic solution to secondarily remove impurities; and washing the solar cell of which impurities have been secondarily removed, followed by recovering high-purity silicone. Accordingly, high-purity silicone can be recovered through a simple process from a waste solar cell or a defective solar cell. Therefore, the high-purity silicone can be used as a source of solar light (solar cell) in the future, thereby being considerably economical.
Abstract:
The present invention relates to a method for producing a high purity manganese compound from a material containing low purity manganese. The method according to the present invention comprises the steps of: obtaining a first manganese leachate by adding hydrochloric acid and a reducing agent in a material containing low purity manganese and by leaching manganese; obtaining a second leachate, from which first impurities are removed, by using potassium hydroxide in the first manganese leachate; obtaining a third manganese leachate, from which second impurities are removed, by adding sulfides in the second manganese leachate; and producing high purity manganese sulfate monohydrate by adding sulfuric acid in manganese oxide obtained by precipitating manganese in the third manganese leachate using potassium hydroxide.
Abstract:
본 발명은 실리콘이 포함된 폐기물로부터 실리콘을 회수하는 방법에 관한 것으로, 보다 구체적으로는 실리콘이 포함된 폐기물을 전처리하여 얻어진 실리콘과 실리카 또는 글라스 중 하나 이상이 포함된 혼합시료로부터 마찰하전형 정전선별장치를 이용하여 간단하여 실리콘입자를 분리하는 분리방법에 관한 것이다.
Abstract:
본 발명은 분리방법에 대한 것으로, 보다 구체적으로는 칼슘이온 및 마그네슘이온이 공존하여 존재하는 용액에서 칼슘 및 마그네슘을 선택적으로 각각 분리할 수 있는 칼슘 및 마그네슘 함유용액에서 칼슘 및 마그네슘의 선택적 분리방법, 상기 분리방법에 의해 얻어진 칼슘옥살레이트 및 마그네슘옥살레이트, 및 상기 옥살레이트들로부터 얻어진 칼슘옥사이드 및 마그네슘옥사이드에 관한 것이다.