550 t/d Lead-Zinc Ore Flotation Plant

Case Details

Introduction: The 550 t/d Lead-Zinc Ore Flotation Plant is a medium-sized mineral processing facility designed for efficient separation of lead and zinc from complex sulfide ores. Equipped with advanced automation control systems and energy-saving equipment, the plant achieves stable processing capacity and high concentrate quality, meeting international industrial standards for lead-zinc beneficiation. It is widely applicable to various lead-zinc ore types, with strong adaptability to ore property fluctuations.

The process mainly adopts the "crushing-grinding-flotation-concentration" route, focusing on efficient separation of spodumene from gangue minerals. The key steps are as follows:

• Crushing & Grinding

Raw ore is first crushed by jaw crusher and cone crusher to particle size below 15mm, then ground in ball mill to -200 mesh accounting for 65-70%, ensuring sufficient liberation of lead-zinc minerals.

• Lead Roughing & Cleaning

Ground ore pulp is fed into flotation cell, adding lead collector (e.g., xanthate) and frother. Lead minerals adhere to bubbles to form lead rough concentrate. After 2-3 times of cleaning, high-grade lead concentrate (lead grade ≥65%) is obtained.

• Zinc Flotation

Lead tailings are adjusted for pH value and added with zinc collector. Zinc minerals are floated to form zinc rough concentrate, which is cleaned 2 times to get zinc concentrate (zinc grade ≥50%).

• Dehydration

Lead and zinc concentrates are dewatered by thickener and filter press, with moisture content ≤12%, facilitating storage and transportation. Tailings are discharged to tailings pond for environmental protection treatment.

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