... -52-4 Usage:Mud&Drilling Fluid in oil wells, remove the dust in the air 25kg PP bags Calcium Chloride ... high way, parking lot, airport, port2)To oilwell drilling workover fluid, dehydrate agent in petrochemical3)To remove the dust in the air, in ... waste water treatment.5)Antifreeze to make concrete, to speed cement hard.6)To make calcium during electroanalysis, To be raw material for other expensive ...