Bái viết Đánh giá khả năng tách đồng khỏi rác thải điện thoại di động bằng phương pháp hỏa luyện kết hợp thủy luyện đưa ra quy trình tách đồng giảm thiểu sự thoát khí độc hại ra môi trường, mà hiệu quả thu hồi đồng hiệu quả, đó là kết hợp phương pháp hỏa luyện và phương pháp thủy luyện. | TNU Journal of Science and Technology 227 11 61 - 67 EVALUATION OF THE ABILITY TO SEPARATE COPPER FROM MOBILE PHONE WASTE BY PYROMETALLURGICAL PROCESS COMBINED WITH HYDROMETALLURGICAL PROCESS Nguyen Thi Hong Hoa1 Nguyen Thi Hue2 Bui Minh Quy1 Nguyen Thi Ngoc Linh1 1 TNU - University of Sciences 2Vocational Education Continuing Education Center Tien Du Bac Ninh ARTICLE INFO ABSTRACT Received 14 4 2022 The recovery of metals in mobile phone waste is a matter of concern due to environmental issues and the increasingly depleted metal resources. There are Revised 14 7 2022 many methods to separate metal from mobile phone waste such as Published 14 7 2022 pyrometallurgical method hydrometallurgical method electrometallurgical method. Promoting the advantages of pyrometallurgical method and KEYWORDS hydrometallurgical method the article presents a copper separation process that minimizes the release of harmful gases to the environment but Mobile phone waste effectively recovers copper which is a combination of pyrometallurgical Pyrometallurgical process method and hydrometallurgical method. Pyrometallurgical stage mobile phone waste is chopped and calcined at 750 oC in a closed furnace that can Hydrometallurgical process recover the released gas in 2 hours. Hydrometallurgical stage the solid is Copper dissolved in a solution of sulfuric acid H2SO4 in the presence of hydrogen Separation process peroxide H2O2 . The factors affecting the copper separation process were studied such as H2SO4 concentration H2O2 concentration solid liquid ratio and temperature showing that H2SO4 4M H2O2 15 solid-liquid ratio and the temperature 40 oC the copper II sulfate CuSO4 solution obtained has a high concentration with separation efficiency of after 1 hour. ĐÁNH GIÁ KHẢ NĂNG TÁCH ĐỒNG KHỎI RÁC THẢI ĐIỆN THOẠI DI ĐỘNG BẰNG PHƢƠNG PHÁP HỎA LUYỆN KẾT HỢP THỦY LUYỆN Nguyễn Thị Hồng Hoa1 Nguyễn Thị Huệ2 Bùi Minh Quý1 Nguyễn Thị Ngọc Linh1 1 Trường Đại học Khoa học ĐH Thái Nguyên 2
