Production tech. of low carbon low silicon aluminium killed steel

The present invention relates to metallurgical technology, and is especially one low carbon and low silicon aluminum-killed steel producing process with converter and continuous small square billet casting machine. The technological scheme is that the low carbon and low silicon aluminum-killed steel producing process includes making steel with molten iron in a converter pre-slagging during tapping, deeply deoxidizing, slag forming fining, soft blowing fining and calcium treatment in an argon blowing station, and final protected casting in a continuous small square billet casting machine. The present invention has lowered production cost.