Calculation of Co_2, SO_x, NO_x Emission form Nonferrous Metal Production Process Based on Economic Statistics

摘要

Co_2, SO_x, NO_x emissions form non ferrous metal processing were estimated by using economical statistical yearbook of the year 1999. The subjected processes were ore-mining, Cu-smelting, Cu-electrolysis, Pb-smelting, Pb-electrolysis, Zn-electroly- sis, distilled Zn, secondary Al, Al sheet rolling, wrought Cu, electric wire production, and optical fiber production. These invento- ry data were compared with the data of 1989. The "Cradle to Gate" emissions were also calculated. The greater part of emissions were put on the foreign countries.