Phosphorus Ore Beneficiation Solution

Phosphorus ore beneficiation process needs to choose the appropriate method according to the characteristics of the ore, the main process includes flotation, scrubbing desliming, re-election and so on. Among them, flotation process is the most widely used, according to the difference in mineral composition can be used in direct flotation, reverse flotation, positive and negative flotation and double reverse flotation and other different process routes. This phosphorus ore beneficiation solution provides customized beneficiation solutions for different types of phosphorus ores to ensure high quality phosphorus concentrate products.

Main Processes

Positive flotation process

Applicable ores: Low-grade phosphorus ores (magmatic apatite, sedimentary metamorphic apatite)

Process characteristics:

• Inhibitors are used to inhibit vein minerals

• Enrichment of phosphorus minerals with special collectors

• Suitable for raw ore with P₂O₅ grade 15-25%.

• Concentrate grade up to 28-32% P₂O₅

• 65-75% recovery

Reverse flotation process

Applicable ores: phosphate and dolomite co-generated ores

Process Characteristics:

• Weakly alkaline medium conditions

• Fatty acid trap flotation of dolomite

• Phosphorus minerals are retained in the tank

• Normal temperature flotation can be realized

• Concentrate grade 30-34% P₂O₅

• 70-80% recovery

Double Reverse Flotation Process

Applicable Ore: Silica-calcium colophosphate ore

Process Characteristics:

• Step-by-step flotation under alkaline conditions

• Flotation of dolomite and then silicate

• Normal temperature flotation, energy saving and consumption reduction

• Concentrate grade can be increased to 32-36% P₂O₅.

• 72-82% recovery

Typical Phosphate Production Line Configuration

Crushing System

• Coarse Crushing: Jaw Crusher (Capacity 100-500t/h)

• Medium and fine crushing: Cone crusher (closed circuit configuration)

• Screening: Vibrating screen (multi-layer high efficiency screening)

Grinding and Classifying System

• One-stage grinding: ball mill + spiral classifier (grinding to -0.3mm)

• Second stage grinding: ball mill + cyclone group (grinding to -0.074mm 75-85%)

Flotation system

• Roughing: 4-6 tanks flotation machine (inflatable volume adjustable)

• Concentration: 3-4 times concentration operation (step configuration)

• Sweeping: 2-3 sweeping operations (to improve recovery)

Dewatering system

• Concentration: High-efficiency thickener (bottom stream concentration ≥65%)

• Filtration: ceramic filter (cake moisture ≤ 12%)

• Drying: rotary drying kiln (optional, moisture ≤ 8%)

Comparison of technical and economic indicators

Technological Innovation Advantage

High-efficiency sorting technology

• Specialized collector system with good selectivity

• Compound inhibitor formula, high inhibition efficiency

• Multi-stage grading and sorting, recovery rate increased by 5-8%.

Energy saving and consumption reduction design

• High-pressure roller milling process saves 40% energy

• Utilization rate of return water ≥90

• Low-temperature flotation technology, reducing heating costs

Environmental protection solution

• Wastewater recycling, realize zero discharge

• Tailings dry storage technology

• Comprehensive dust management system

Successful Application Cases

A large-scale phosphorus ore dressing plant renovation project

Condition before remodeling:

• Ore type: silica-calcium colloidal phosphate ore

• Grade of raw ore: 18.55% P₂O₅

• Adopted process: positive and negative flotation mixed process

• Problems: large amount of chemicals, high flotation temperature

Technical modification:

• New process: double reverse flotation process

• Key improvement:

  • Normal temperature flotation technology

  • Alkali-free process

  • Optimization of pharmaceutical system

Modification effect:

Technical Services and Support

Pilot Research Services

• Ore Process Mineralogy Studies

• Selectivity testing and process validation

• Expanded Continuous Testing

• Provide authoritative test reports

Engineering Design Services

• Process design and optimization

• Equipment selection and configuration program

• Plant layout and construction design

• Automation control system design

Production support services

• Equipment installation and commissioning guidance

• Formulation of operating procedures and personnel training

• Production technology optimization and transformation

• Long-term technical consulting services

After-sales service guarantee

• Equipment maintenance service

• Spare parts supply

• Technology upgrading

• Remote technical support

We have rich experience in phosphate ore beneficiation projects, and can provide the most economic and efficient phosphate ore beneficiation solutions according to your ore characteristics and production needs.

Welcome to contact our professional technical team to get the customized solution and detailed quotation for phosphate ore beneficiation!