XJM Series Froth Flotation Machine
Flotation Machine for Coal Slime & Mineral Processing XJM-KS & XJM-S Series
John Finlay’s XJM Series froth flotation machines deliver high-efficiency coal slime recovery and fine coal flotation featuring an integrated mineralizing device, umbrella impeller, and split-type stator for maximum separation performance.
Product Overview
XJM Series Froth Flotation Machine Overview
John Finlay supplies two series of XJM froth flotation machines the large-capacity XJM-KS (3+2) Series and the XJM-S Series, engineered for coal slime recovery, fine coal beneficiation, and mineral processing plants.
XJM-KS (3+2) Series
Large Capacity SeriesXJM-S Series
Self-Aerating SeriesWorking Principle
Working Principle of the Froth Flotation Process
The XJM-KS Series uses a mechanical agitation froth flotation method to separate hydrophobic coal or mineral particles from hydrophilic gangue material.
Technical Specifications
Technical Specifications | XJM-KS (3+2) Series Flotation Machine
All performance parameters are sourced directly from manufacturer technical documentation. Contact John Finlay for project-specific configuration advice.
| Model | Cell Volume (m³) | Unit Processing (t/m³·h) | Pulp Processing (m³/m²·h) | Agitation Motor (kW) | Scraper Motor (kW) | L (mm) | W (mm) | H (mm) |
|---|---|---|---|---|---|---|---|---|
| XJM-KS12 3+2 | 12 | 0.6–1 | 6–10 | 30 | 1.5 | 15,805 | 3,120 | 4,200 |
| XJM-KS16 3+2 | 16 | 0.6–1 | 6–10 | 37 | 2.2 | 18,312 | 3,450 | 4,713 |
| XJM-KS20 3+2 | 20 | 0.6–1 | 6–10 | 45 | 2.2 | 19,605 | 3,700 | 4,803 |
| XJM-KS24 3+2 | 24 | 0.6–1 | 6–10 | 55 | 4 | 20,972 | 3,950 | 5,066 |
| XJM-KS28 3+2 | 28 | 0.6–1 | 6–10 | 55 | 4 | 22,328 | 4,200 | 5,107 |
| XJM-KS36 3+2 | 36 | 0.6–1 | 6–10 | 75 | 4 | 24,475 | 4,600 | 6,330 |
| XJM-KS45 3+2 Largest | 45 | 0.6–1 | 6–10 | 75 | 4 | 27,805 | 4,870 | 6,405 |
* Specifications from John Finlay’s product documentation. Contact JFI for project-specific sizing and configuration advice.
Process Configuration
Flotation Process Flow Options
The XJM Series supports two primary flowsheet configurations to suit varying coal beneficiation plant requirements one time flotation for standard applications and secondary flotation for maximum coal essence recovery.
One-Time Flotation Process
Secondary Flotation Process
Industry Applications
Applications in Coal Slime Flotation & Mineral Processing
The XJM Series is optimized for domestic coal beneficiation flotation lines where performance is required from both primary and secondary flotation stages.
Coal Slime Flotation
Recovery of ultra-fine coal particles from the effluent of coal washing plants. Particularly effective for flotation machines for coal slime applications in domestic coal preparation lines.
Fine Coal Flotation
Treatment of fine coal fractions (<0.5 mm) that cannot be efficiently processed by gravity-based methods, recovers clean coal essence from tailings streams.
Coal Washing Plants
Integration into coal washing plant flotation circuits as primary or secondary froth flotation units improves overall clean coal yield and reduces waste to tailings.
Mineral Flotation
Applicable to nonferrous metal ores, sulfide minerals, and industrial mineral flotation where precise particle–bubble contact and reagent efficiency are critical.
Coal Beneficiation Plants
Full-plant integration as the primary flotation stage in coal beneficiation flotation circuits, supporting one-time and secondary flotation process configurations.
Slurry Pretreatment Circuits
Works in conjunction with slurry pretreatment equipment to condition and disperse slurry ahead of flotation, improving recovery rates and reducing overall reagent consumption.
Why This Equipment
Advantages of the XJM-KS Froth Flotation Method
The froth flotation method employed by the XJM-KS delivers measurable operational and economic benefits compared to conventional flotation cell designs.
Higher Flotation Throughput
The integrated mineralizing device and optimized impeller geometry enable significantly higher slurry volumes to be processed per unit time, increasing overall plant productivity.
Reduced Reagent Consumption
Slurry pretreatment and efficient bubble dispersion minimize reagent dosing requirements, lowering operating costs and improving the sustainability of the flotation operation.
Simpler Plant Operation
Eliminating the need for pre-processing equipment streamlines the flotation process, reducing the number of maintenance touchpoints and enabling leaner operations teams.
Improved Recovery Rates
Pre-mineralization of the pulp before entering the flotation cell ensures better particle–bubble attachment, delivering improved coal essence recovery from fine coal and slime fractions.
Lower Civil & Construction Costs
The compact footprint and reduced overall plant height result in lower civil construction costs, making the XJM-KS an economical choice for greenfield and brownfield installations alike.
Tailings Value Recovery
Secondary flotation configuration enables the extraction of additional coal essence from tailings streams turning waste into value and improving overall process economics.
About John Finlay
Flotation Machine Manufacturer
Why John Finlay?
John Finlay Engineering & Tech Group of Companies is a specialist supplier of industrial flotation machines and coal processing equipment. As an experienced flotation machine manufacturer and supplier, John Finlay provides engineering support, technical consultation, and after-sales service for coal beneficiation and mineral processing projects across Australia, India, and international markets.
- Specialist industrial flotation machine manufacturer with deep coal processing expertise
- Full project support from equipment selection to commissioning and training
- Supply of XJM-KS and XJM-S Series flotation machines for coal slime, fine coal, and mineral applications
- Proven experience with both one-time and secondary flotation process configurations
- Competitive pricing on flotation machine for sale contact for project-specific quotations
- Experienced in flotation machine India supply and international project logistics
- Ongoing technical support, spare parts supply, and maintenance programs available
- 130+ coal washery projects completed globally 50+ years of coal beneficiation experience.
Flotation Machine | Frequently Asked Questions
Common questions from coal washery process engineers and plant operators about XJM froth flotation machines, cell sizing, and process configuration.
The froth flotation process is a physicochemical separation method where hydrophobic mineral or coal particles selectively attach to air bubbles rising through a pulp, forming a froth layer at the surface that is then scraped off as product. The XJM-KS flotation machine applies this froth flotation method using an integrated mineralizing device for pre-treatment, an umbrella impeller for uniform bubble dispersion, and a bubble scraping device for continuous froth removal delivering highly efficient and automated froth flotation for coal slime and mineral applications.
The XJM flotation machine (specifically the XJM-KS Series) is primarily used in coal beneficiation flotation to recover fine coal and coal slime particles from coal washing plant effluent. It is particularly effective for fine coal flotation (<0.5 mm fraction) and coal slime flotation, where gravity-based separation methods such as dense media cyclones are insufficient. It is also used in secondary flotation configurations to recover additional coal essence from tailings, improving overall plant yield.
The XJM-KS (3+2) Series is a large-capacity mechanically agitated flotation machine available in cell volumes from 12 to 45m³ designed for high-throughput coal slime and mineral flotation in large coal washing plants. The XJM-S Series is a self-aerating flotation machine with a different impeller and aeration configuration it features a pre-classification volute, circulation plate, inhibition point, and independent drive unit per cell. Both series use the same core froth flotation principle and support one-time and secondary process configurations. Selection depends on plant throughput, footprint, and operational preference.
The XJM-KS (3+2) Series is available in seven standard models with single-cell volumes of 12, 16, 20, 24, 28, 36, and 45 m³. All models share the same unit processing capacity range of 0.6–1 t/m³·h and pulp processing capacity of 6–10 m³/m²·h, with agitation motor power ranging from 30 kW (12 m³ model) up to 75 kW for the 36 m³ and 45 m³ models. The 3+2 configuration means three rougher cells and two scavenger cells in each bank.
Yes. The XJM Series supports both one-time flotation and secondary flotation process configurations. In a secondary flotation setup, the primary flotation stage recovers the bulk of clean coal, and the secondary flotation stage processes middlings or tailings to extract additional coal essence significantly improving overall coal recovery. This dual-stage approach is especially beneficial in domestic coal flotation lines where maximizing yield from both primary and secondary stages is required.
Model selection depends primarily on your required slurry throughput (t/h or m³/h), feed particle size distribution, and available plant footprint. The XJM-KS Series offers models from 12 m³ to 45 m³ cell volume, with larger models suited to higher-capacity coal washing plant flotation applications. For project-specific sizing and process configuration advice, contact the John Finlay engineering team who can assess your feed characteristics, target recovery, and plant layout to recommend the optimal flotation machine configuration.