Main causes and counter-measures for seasonal break of oxygen-free copper wire rod;

There are various manufacture processes of copper wire rod and also viarious sizes andquantities of Cu_2O particles in copper．As a result，there will be various structures and prop-erties of drawing of rod，Smaller and fewer Cu_2Oparticles will be helpful to for reduce frac-ture rate of drawing.

The paper describes the research on effect of rare earth additive on structure, physical property and impurity removal of low oxygen bright copper bars produced by continuous casting and rolling, and gives analysis and discussion on function and results of applying rare earth additive in continuous casting and rolling of copper bar.

Recovery of Copper from Copper-electroplating waste Liquor by Magnetic field fluidized Bed;