Copper selection from pyrometallurgical slag
Thread Content
There is a batch of waste, which is slag from pyrometallurgical copper production; it contains about 5% copper, 35–40% iron, and 0.5 grams of gold per ton. How can copper and iron be separated from this material?
The converter slag here contains 2.5–4.0% copper, and the recovery rate can reach 90%. Flotation can be used.
Whether it is slag formation in the first stage of fire-based processes, or slag produced in converters or other smelting processes, it can be effectively recovered using mineral processing methods
Reply to 3# Lao Amin: Could you please explain in detail how the medication should be used, what agents to employ, as well as the flotation process and timing, etc.?
Reply to 2# yang*anghui: Please explain in detail, brother.
1. The slow-cooling slag processing plant uses a three-stage, closed-circuit crushing process. The coarse crushing equipment is a 600×900 jaw crusher, the medium crushing equipment is a ø1750 standard cone crusher, and the fine crushing equipment is a ø2100 short-head cone crusher. The crushing capacity is approximately 180 tons per hour. The grinding and flotation process consists of a two-stage grinding and separation sequence; the process flow diagram is shown in Figure 1. The equipment for the first stage of grinding is a ball mill with dimensions of ø2700×3600, while the equipment for the second stage of grinding is a ball mill with dimensions of ø2700×4000. The classification equipment includes a cyclone with a diameter of ø500 mm for the first stage and a cyclone with a diameter of ø350 mm for the second stage. The flotation equipment used is an XJk-2.8 flotation machine. The process parameters are: fineness of grinding in the first stage – 55–60% at -200 mesh ； The fineness of grinding in the second stage is 65–70% at -320 mesh. The grinding station efficiency is around 42 tons per hour. Flotation reagents: butyl xanthate at 120 g/t, oil No. 2 at 70 g/t. The flotation parameters are as follows: the grade of the raw slag after slow cooling is around 4%, the grade of the flotation concentrate is 29–30%, the grade of the tailings is 0.30–0.35%, and the recovery rate is 93%–94%. The magnetic separation equipment for the tailings after flotation is a cylindrical magnetic separator with dimensions of ø900×1800 mm. The magnetic separation efficiency is poor; the grade of the magnetic concentrate is around 40%, which is only a few percentage points higher than that of the raw ore.
It is unclear whether the converter slag in his hands has been slowly cooled; without slow cooling, mineral processing becomes difficult.
Reply to 6# Lu Doujiang: Very professional. Thanks, bro.
If slow cooling is not possible, and due to constraints related to conditions and costs, it is recommended to use a shaker. I conducted experiments two years ago, and the results were quite good
Find a manager for copper smelting via QQ at 514631388