Đánh giá sự biến đổi thành phần phóng xạ môi trường trong hoạt động khai thác, chế biến quặng đồng khu mỏ Sin Quyền, tỉnh Lào Cai.

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Dinh Huan Trinh, Dinh Thuan Dao, Dung Nguyen Van

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ Việt Nam - B, 2020

Mô tả vật lý: tr.8

Bộ sưu tập: Báo, Tạp chí

ID: 308533

Thêm vào giỏ Liên kết toàn văn

Mỏ đồng Sin Quyền được đưa vào khai thác từ năm 1992 trên diện tích 140 ha, với trữ cấp 121 được đánh giá là 650.000 tấn, sản lượng kim loại ước tính 10.000 tấn/năm. Hiện nay mỏ được cấp phép mở rộng quy mô khai thác ở khu Đông và khu Tây với diện tích là 210 ha, tổng trữ lượng khoảng 55 triệu tấn quặng đồng, hàm lượng quặng trung bình 2,52%, hàm lượng urani trong quặng đồng từ 25÷120 ppm, hàm lượng thori khoảng 3÷15 ppm. Mỏ đang được khai thác với khối lượng đất đá hàng năm 8,1 triệu m3, hai dây chuyền chế biến với sản lượng khoảng 1,5 triệu tấn quặng nguyên khai. Bài báo trình bày kết quả nghiên cứu sự gia tăng các thành phần phóng xạ môi trường do hoạt động khai thác, chế biến quặng đồng tại khai trường, xưởng tuyển, bãi thải và phát tán các chất phóng xạ đến môi trường xung quanh
đồng thời đề xuất các giải pháp phòng ngừa, giảm nhẹ ảnh hưởng tác hại ô nhiễm phóng xạ đối với cán bộ, công nhân tham gia sản xuất và khu vực dân cư lân cận.The Sin Quyen copper mine in the area of 140 ha has been exploited and processed since 1992. Ore reserve at 121 level was evaluated to be 650,000 tons and estimated annual copper production was about 10,000 tons per year. Currently, mining licence was approved for extending in the East and the West zones on the area of 210 ha. The total copper ore reserve was estimated to be 55 million tons with average ore content of 2.52%, uranium content in copper ore varies from 25 to 120 ppm, thorium content varies from 3 to 15 ppm. Mine has been extracting with annual volume of rocks and soils equivalent to 8.1 million cubic meters and two production lines with about 1.5 million tons of crude ore. In this paper, the authors presented the increasing results of the enviromental radioactive components due to copper mining and processing activities in the mining sites, sifting units, and dumping sites which disseminated radioactive elements into the surrounding environment. Additionally, the prevention and mitigation solutions for radioactive pollution for workers and staffs involved in the mining activities as well as for people in adjacent residential areas were also proposed.

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