Đang chuẩn bị liên kết để tải về tài liệu:
Extractive Metallurgy of Copper Part 7

Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ

Tham khảo tài liệu 'extractive metallurgy of copper part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Continuous Converting 157 The methods by which Mitsubishi Outokumpu and Noranda converting avoid foaming are described in Sections 10.2.4 10.3.2 and 10.4.5. 10.1.3 Choice of matte grade for continuous converting The matte that continuous converters receive from smelting is 68-75 Cu. Production of this high-Cu matte a generates most of the Fe and s oxidation heat in the smelting furnace where it is needed for heating and melting b gives maximum impurity removal before continuous converting c minimizes slag production in the converting furnace. Minimization of converter slag is important because continuous converting slags a contain 10 to 20 Cu b are usually recycled to smelting to recover this Cu at extra cost . 10.2 Downward Lance Mitsubishi Continuous Converting See also Chapter 13 Mitsubishi converting blows oxygen-enriched air downwards through lances onto a molten slag matte copper bath Figure 10.1. Tables 10.1 13.1 and 13.2 give operating data. The Mitsubishi converter is used mostly as part of the Mitsubishi continuous smelting converting system Chapter 13 four operating systems in 2002 . It is used in one case to convert the matte from a Noranda smelting furnace Table 10.1. 10.2.1 Description The Mitsubishi continuous converter consists of a a wall opening for continuously feeding molten matte into the furnace b vertical lances for blowing oxygen-enriched air and limestone flux continuously into the incoming matte c a siphon for continuously underflowing the converter s molten copper product d an overflow hole for continuously overflowing molten slag. It also has an enclosed push-chute for periodically pushing scrap anodes purchased scrap and large reverts through its roof Oshima et al. 1998 . 158 Extractive Metallurgy of Copper Fig. 10.1. Mitsubishi downward lance continuous converter 12.5 m diameter. It converts up to 1500 tonnes of matte per day. The 10 rotating vertical lances are notable. Continuous Convening 159 During operation the converter contains

Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.