To solve the problem of low carbon content at the endpoint

high TFe and heavy smoke during dredging

new steelmaking process is put forward which by adding the silicon to semi-steel to thermal compensation. By researching and optimizing the process parameters

the new steelmaking process was industrial applied. Application effect indicated that the new process could reduce the carbon burning and temperature drop during charging semi-steel

and the heat and quality of semi-steel was improved

the proportion of carbon content at the endpoint of rail steel between 0. 07% 〜0. 12% was increased sharply from 32. 2% to 92. 38%

TFe in slag of rail steel reduced from 19. 9% to 18. 62%

while carbon-steel reduced from 20. 85% to 18. 89%. In addition

the new process greatly reduced the problem of heavy smoking during vanadium slag picking up process

which has obviously benefit of environmental protection.