... oxidant and activator toxic. 3. activated clay usage: Broadly speaking, activated clay finds use in following fields:1) Refining ... waste oil (lubricating oil) - vaseline - olefin 4. activated clay specs: refining ability pct min 93 partical size(-2μm ... bentonite product like activated bleaching earth, fuller earth,bentonite clay, activated clay, sodium bentonite, calcium bentonite, drilling mud, pet ...