Copper deoxidizer: 

◆ Commonly used particle size：20～100mesh；20～60mesh；-20mesh
◆ Alcium hexaboride :The Excellent oxygen  deoxidizer which used for free copper, The results show that the deoxidizing capacity of calcium hexaboride deoxidizer is higher than that of copper boron alloy and phosphor copper . and it has enhancement effect on copper matrix and no pollution to copper liquid. Add amount of the Alcium hexaboride  >0.60 % Can reduce the oxygen content of copper liquid to  < 20 ×10- 6, Which can be reached the domestic standard of first-grade oxygen-free copper.
◆ Calcium hexaboride have little impact on the electrical conductivity of copper . Add range of the Alcium hexaboride (0.69 %～1.12 %).
◆ With increase the amount of calcium hexaboride, the tensile strength of copper will continues improve, when the add amount of the calcium hexaboride reach 0.88 % reach the maximum value.