A method to recycle lead, zinc, sulfur, iron and barite from lead-zinc mine tailings!

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Due to early mineral processing technology and Mineral processing equipmentThe level is relatively low, and many lead-zinc tailings still contain a lot of valuable components, such as lead, zinc, sulfur, iron, barite, feldspar, quartz, mica, etc. In this regard, we can re-select and recover the valuable components in the lead-zinc mine tailings at this stage according to the type, content and respective occurrence status.

Let’s learn about the process of re-selecting and recovering various useful elements from lead-zinc mine tailings!

1.Re-selection and recovery of lead-zinc ore process

Lead-zinc sulfide ore tailings often contain galena, sphalerite, pyrite, and chalcopyrite. The gangue minerals include calcite, quartz, dolomite, mica, etc., and the regrinding-flotation process is often used to process lead and zinc. Mine recycling.

The mineral components of lead oxide zinc ore tailings are more complex, and the associated components are unstable. Therefore, the priority flotation process is often chosen as the main separation process, and desliming operations are performed before flotation to improve flotation indicators and dosage of chemicals.

The ores containing both lead-zinc oxide ore and lead-zinc sulfide ore in the mixed lead-zinc ore tailings are usually separated using a mixed-partial flotation process or a mixed-priority flotation process, and the lead-zinc oxide ore and lead concentrate are sequentially separated. and separated from zinc concentrate.

2.Re-select the process method for recovering sulfur and iron

If the lead-zinc tailings contain refractory pyrrhotite, the sulfur content in the iron concentrate will exceed the standard. Therefore, sulfur recovery must be strengthened to reduce the content of harmful impurities sulfur in the iron concentrate. Flotation-weak magnetic separation is often used. -Flotation combined process recovers sulfur and iron from lead and zinc tailings.

3.Re-selection of barite recovery process

The combined gravity separation and flotation process recovers barite from lead and zinc tailings. Lead and zinc mine tailingsspiral chute-Desulfurization flotation-regrinding-barite flotation process flowSorting,It can effectively recover low-grade barite in lead-zinc tailings.

4、Recycle feldspar and quartz process

The components that affect the quality of feldspar and quartz in lead-zinc tailings are mainly minerals such as siderite, mica, and a small amount of fluorite. The combined magnetic-flotation process can be used to recover the feldspar and quartz in the tailings.

The above only introduces the process methods for re-selection and recovery of different useful minerals in lead-zinc mine tailings. No matter which process method is used, it is necessary to confirm the valuable elements and components in the tailings before designing a suitable re-selection method according to the situation. , so it is recommended to carry out mineral processing test analysis, and through analysis, design a reasonableLead-zinc mine tailings re-selection process.