67711-87-9 Ammonia leach flotation tails Ammonia leach slurry Ammonia leach slurry flotation concentrates Copper precipitate EINECS 266-963-6 Leach solutions, copper oxide ore, acid Neutralization copper leach solution Pellet plant pregnant solution Pregnant copper leach solution Pregnant copper sulfate electrolyte Pregnant copper sulfate leach solution Pregnant solution Primary copper leach pulp