1) Process 2) To reduce 3) Treat 
to treat ores to remove impurities
• (v. t.) To reduce (ores).
Ben`e·fi'ci·ate transitive verb [ Spanish beneficia r to benefit, to work mines.] (Mining) To reduce (ores). -- 
[v] - process (ores or other raw materials), as by reduction
verb process (ores or other raw materials), as by reduction
Process (ores or other raw materials), as by reduction
To concentrate or enrich; often applied to the preparation of iron ore for smelting.
to treat (ore) to make more suitable for smelting.