According the issue of Al-CaO complex deoxidizer for clean steel easily crushing during process of falling from 10 meters high burden bin led to low utilization

increase of cost and dust pollution in situ

the effect of adding epoxy resin

modified starch etc binders with 0-2.5% content in Al-CaO complex deoxider fine powder and binder curing at 180-350 °C on drop strength of complex deoxidizer has been studied. Results show that the epoxy resin is better than modified starch

with increasing epoxy resin content the drop strength of complex deoxidizer increases

and as the epoxy resin content is more than 2.0%

the crushing rate is no-obvious change; with adding 2.0% epoxy resin and curing at 350℃

the crushing rate of complex deoxidizer is minimum that is 17.5%. The application o£ adding epoxy resin in Al-CaO complex deoxidizer for EH40 steel in RH refining show that with adding epoxy resin the drop strength of complex deoxidizer increases obviously to decrease the dust pollution in situ and the cost for control pollution.