Scheelite Flotation Technology

In the field of scheelite beneficiation, flotation is currently the most widely used and effective technology. With the decreasing availability of high-grade, easily beneficiated resources, the efficient recovery of low-grade, high-impurity scheelite has become a focus of the industry, and flotation processes are constantly being iterated and upgraded.

Classic Heated Flotation (Petrolov Process)

Principle: Using 80-90℃ high temperature and a large amount of water glass, the collector on the surface of calcium-containing gangue (such as fluorite) is rapidly desorbed, thereby accurately separating scheelite.

Advantages: Stable separation indicators, producing high-grade concentrate.

Pain Points: High energy consumption, large water glass consumption, high operational risk.

Optimization Directions:

Replace single water glass with a combination of depressants to reduce reagent costs.

Adopt a room-temperature dilution process, eliminating the heating stage and significantly saving energy.

Introduce Na₂S in synergy with water glass to improve separation efficiency.

High-Efficiency Room Temperature Flotation

Advantages: Low operating cost, low energy consumption, and simple operation; more suitable for quartz gangue mines.

Core: Achieves efficient separation of scheelite and gangue through a combination of depressants and mixed collectors.

Challenges: High requirements for ore property matching; separation indicators are prone to fluctuation.

Cutting-Edge New Flotation Processes

Lime Method: Breaking with traditional understanding, lime is no longer just a pH adjuster. Used in conjunction with sodium carbonate and sodium silicate, it can directly obtain a 10% grade rough concentrate in the roughing stage.

Particularly suitable for skarn-type deposits and has been widely adopted by major granulator plants.

Fine-Grain Flotation Technology: Solves the problem of "over-grinding loss" of fine-grained scheelite. Through hydrophobic agglomeration, fine-grained minerals are "agglomerated" and then recovered using conventional processes.

Divided into three mainstream technologies: carrier flotation, shear flocculation flotation, and oil agglomeration flotation.

Whether using traditional heated flotation or innovative lime-based and micro-particle technologies, the core principles are precise separation and efficient recovery. Xinhai Mining, with its deep understanding of flotation processes and continuous innovation, provides customized solutions for mines worldwide, maximizing the utilization of every tungsten resource.