Taking copper sulphide mineral as study objects, the studies of chalcopyrite heating and pressure pre-oxidation leaching process were conducted in acid system adding chloride.

The sealing technique of FED is introduced in this papers, which include the selection, mixing and painting of low fusing point glass, the process of heating and pre-process of the flat glass.

For the process of the fiber taper drawing, the pre-heating time and stretching speed are carefully examined for parameter optimization.