Zinc-containing materials:
The smelting slag is a precipitate washed out by the copper slag produced by the crushing process of the copper rod factory.

Physical requirements:
Fine particle size, allowing for particulate matter, no odor, light gray or grayish white. The leached positive water is filtered to have normal color and no delamination or odor.

Chemical specifications:
1. Standard: Moisture: 23% or more, zinc 28-30, copper 5 or more, iron less than 1.2, chlorine less than 0.3, cadmium less than 0.015, nickel less than 0.05, lead less than 0.4
2. Qualified: Moisture: 20% or more, zinc 25-33, copper 5 or more, iron less than 1.5, chlorine less than 0.2, cadmium less than 0.02, nickel less than 0.07, lead less than 0.6
3. Pricing method: According to the sample negotiation agreement.