LF The furnace achieves the effects of deoxidation, desulfurization and removal of inclusions by means of arc heating, bottom blowing and stirring, and making white slag. The deoxidizer is an important part of the LF furnace’s many refining functions. Therefore, people have been looking for a deoxidizer that can deoxidize the slag quickly, effectively, and with low consumption . Common Deoxidizer C, Si, Al, Ba wait, C Deoxygenation is slow under normal pressure. Ba The utilization rate is too low. Si Poor deoxidation ability and increased [Si], only AL deoxidation Widely adopted due to its strong capabilities and fast speed, but usually AL It needs to be processed into aluminum chips before it can be used. This method has two disadvantages:
Under the conditions of high-temperature furnace gas and negative pressure dust removal, the combustion loss of aluminum powder is large.
Aluminum powder is added unevenly. The aluminum powder part of the top slag is aluminum-enriched, and the return of silicon and phosphorus is serious, which is easy to increase AL.
For this purpose, we developed a deoxidizer with the following purpose: 1. Rapidly foam the slag to form arc-bubbling slag, thus shortening the foaming and arc-bubbling time of the slag; ②、
Evenly and continuously melt and release aluminum. Deoxidize the slag; ③, the slag composition after slagging has good capture and adsorption of inclusions in steel ability.
. Element
| AL (%) | AL2O3（%) | SIO2 (%) | S (%) |
| >10 | >45 | ＜10 | <0.3 |
| >15 | >40 | ＜10 | <0.3 |
| >18 | >35 | ＜10 | <0.3 |
| >48 | >20 | ＜8 | <0.3 |
| Specific content quantity Can root according to steel factory need beg Tune Festival | |||