Aiming at much end oxygen content， little aluminum absorptivity and more cost of low carbon steel alumi- num-killed in the steel works No.3， Hangang. The analysis and test were carried out in converter process adopted steel grit aluminum deoxidizer instead of aluminum ingots. The good practice effect has been achieved at converter No.9 and No.4 for a month. The aluminum absorption rate and its stability of converter steel deoxidizing was im- proved obviously and refining process got easy. Finished Al s control level was improved obviously and comprehen- sive product cost was reduced by 1.13 yuan/ton.