Scheelite Gravity Concentration: High-Efficiency Tailings Removal, Energy Saving, and Cost Reduction

In the field of scheelite beneficiation, gravity concentration has become the preferred solution for the separation and pre-tailing removal of coarse, medium, and medium-sized scheelite due to its advantages of "simple process, low cost, and environmental friendliness."

Core Principle of Gravity Concentration

Gravity concentration achieves separation based on the density difference between minerals:

Scheelite density: 5.8–6.2 g/cm³

Fluorite density: 3.0–3.3 g/cm³

Calcite density: 2.6–2.8 g/cm³

The significant density difference between scheelite and gangue minerals allows for effective separation in gravity concentration equipment.

Unique Advantages of Gravity Concentration

Pre-tailing Removal: Effectively separates scheelite from intractable rocks (such as garnet), recovers liberated scheelite, and avoids over-grinding and mud formation.

Cost Reduction and Efficiency Improvement: Significantly reduces the feed rate for subsequent flotation, lowers energy and reagent consumption, achieving dual benefits.

Combined Process: A combined process of gravity separation and tailings removal + flotation can significantly improve recovery rates. For example, in a refractory ore deposit, gravity separation removed 50% of the tailings, increasing the scheelite concentrate recovery rate from 61.58% to 76.54%.

Limitations of Gravity Separation

 High site requirements and large land area required.

Limited processing capacity and high water consumption, posing a significant challenge in water-scarce regions.

Poor separation effect on fine-grained scheelite (easily over-grinding).

Gravity separation is a key component of the "coarse-to-fine" strategy in scheelite beneficiation. Xinhai Mining Equipment, through optimized combinations of gravity separation and flotation, tailors efficient and energy-saving beneficiation solutions for mines, maximizing resource utilization.