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Số 62, Kỳ 3b, [07 - 2021] - BM Tuyển Khoáng

Tổng quan các phương pháp tái chế từ màn hình LCD phế thải

DOI:10.46326/JMES.2021.62(3b).09

  • Cơ quan:

    Trường Đại học Mỏ - Địa chất, Hà Nội, Việt Nam

  • *Tác giả liên hệ:
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  • Nhận bài: 11-02-2021
  • Sửa xong: 20-05-2021
  • Chấp nhận: 18-06-2021
  • Ngày đăng: 20-07-2021
Trang: 80 - 93
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Tóm tắt:

Indi là một kim loại khan hiếm và ngày càng được sử dụng rộng rãi trong nhiều lĩnh vực, nhờ tính năng bán dẫn và quang điện từ của nó. Nguyên liệu chính từ khoáng sản để sản xuất ra indi là các sản phẩm phụ của nhà máy tinh luyện kẽm. Tuy nhiên, nguồn tài nguyên thứ cấp là các màn hình LCD phế thải lại chứa hàm lượng indi cao hơn nhiều so với nguồn tài nguyên từ khoáng sản. Trong các màn hình LCD phế thải có chứa đến 1.400 g/t In (tương đương 0,7 g/m2), trong khi đó các sản phẩm phụ của nhà máy tinh luyện kẽm chứa khoảng 100÷200 g/t In. Quá trình tái chế indi từ màn hình LCD phế thải trải qua ba khâu công nghệ: tháo dỡ màn hình LCD, thu hồi tấm kính ITO chứa indi và thu hồi kim loại indi. Bài báo này trình bày đặc điểm của indi trong màn hình LCD phế thải và các kỹ thuật sử dụng trong từng khâu công nghệ. Từ đó, đưa ra một vài quy trình tái chế indi cụ thể phù hợp với điều kiện tại Việt Nam.

Trích dẫn
Phạm Văn Luận và Trần Trung Tới, 2021. Tổng quan các phương pháp tái chế từ màn hình LCD phế thải, Tạp chí Khoa học kỹ thuật Mỏ - Địa chất, số 62, kỳ 3b, tr. 80-93.
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