Preparation of steel slag porous soundabsorbing material using coal ...
WEBOct 1, 2015 · In order to maintain sufficient mechanical properties in soundabsorbing materials in practical appliion, the appropriate dosages of coal powder and foaming agent were found to be 30% coal powder and % H 2 O 2. Download : Download fullsize image; Fig. 7. Effect of the porosity regulation on soundabsorption properties.