Loss   of  [Als

]

and [Si

]

   and   change   of   inclusions   in   low   alloy   steel (electrode-0.030%[Als

]

0.29% [Si

]

20×10

-6

T[O

]

) remelted   by   a   15   kg   electroslag   remelting (ESR)furnace   with   CaF

2

-Al

2

O

3

-CaO-SiO

2

slag   system  in argon atmosphere with argon flow rate 25 L/min and in air atmosphere have been studied. Results showed that remelted in   air   atmosphere

T[O

]

   of  ESR   ingot   increased   to   36×10

-6

while [Als

]

  and [Si

]

decreased respectively   to   0.011%  and    0. 17%;remelted    in    argon    atmosphere

T[O

]

    of    ESR    ingot    was    24×10

-6

[Als

]

and [Si

]

    were    respectively 0.024%  and  0.28%.As  compared  with  that  remelted  in  air  atmosphere

the  size  of inclusions  in  ingot  remelted  in  argon atmosphere was minor

and the distribution of inclusions was more homogeneous and dispersed.