Abstract: A copper converter which includes: a converter body; a plurality of tuyeres disposed to the converter body, each tuyere having an outer end portion; a first concentrate blowing pipe assembly disposed at least one of said tuyeres, the concentrate blowing pipe assembly including an introducing pipe inserted into the at least one tuyere; a blowing unit, connected to the concentrate blowing pipe assembly, for blowing a material including a concentrate through the introducing pipe into the converter; an air supplying unit, disposed to the tuyeres, for supplying pressurized air to the tuyeres; and formations, disposed to said outer end of each tuyere and said concentrate blowing pipe assembly, for detachably interlocking the introducing pipe with the at least one tuyere.