It is available to carry out carbon pick-up operation by using 20%~30% hot metal charging
con- trolling oxygen blown rate and 1.8~2.8 basicity of binary slag for production of medium and high carbon steels such as 50CrVA
60Si2Mn and 77Mn during EAF steel making with 70 t EAF -LF-CCM flow sheet. The production statistical data showed that with EAF carbon pick-up operation the end C of steel was 0.25%~0.53%
P was 0.006%~0.015%
and temperature of steel 1593~1625 ℃.Although EAF carbon pick-up operation prolonged steel making period for 5~10 min
the LF feeding wire amount decreased more than 1/2
it obviously decreased melting cost and increased steel quality.