XAZGF Series Filter Press
Filter Press Machine for Mining Coal Processing
John Finlay’s XAZGF series filter press machines deliver efficient solid-liquid separation for coal processing, mineral beneficiation, and industrial dewatering, achieving exceptionally low residual moisture in the filter cake.
Low
Residual moisture
What is a Filter Press Machine?
Filter Press Machine for Mining & Industrial Dewatering
A filter press machine is used for the solid-liquid separation of slurry a mixture composed of suspended solids and liquid. The process involves applying pressure to the slurry, forcing the liquid (filtrate) through a filtering medium (filter cloth), while the solid particles are retained to form a filter cake.
This equipment is widely used in coal processing, mineral beneficiation, and other industrial applications where efficient dewatering and recovery of solid material are required. John Finlay’s XAZGF series filter presses are widely used to dewater waste fines, eliminate tailing ponds, and recover clean water achieving exceptionally low residual moisture critical for concentrate recovery and tailings management.
John Finlay filter presses are particularly effective for handling heavy metals in mineral mining, including arsenic, lead, cadmium, chromium, iron, manganese, aluminum, and nickel, making them highly versatile for various metal and coal mining applications.
XAZGF Series | Key Technical Overview |
|---|---|
Filter Plate Sizes | 1000, 1250, 1500 mm |
Chamber Range | 30–110 chambers |
Filtration Area | 46–378 m² |
Filtration Volume | 690–5,670 L |
Closing System | Hydraulic |
Cake Discharge | Manual or automatic |
Primary Use | Coal & mineral dewatering |
Specific Applications | Tailings, concentrate recovery |
Equipment Components
Filter Press Machine Components
Every John Finlay XAZGF filter press consists of six key components engineered to work together for maximum filtration efficiency and reliability.
Frame
Rigid structure that supports the entire filter press assembly engineered for high-pressure operation and long service life under continuous mining plant conditions.
Filter Plates
Plates with filter cloths that form the chambers for slurry collection and separation. Available in 1000mm, 1250mm, and 1500mm sizes with 30–110 chamber configurations.
Filter Cloth
The filtering medium that allows liquid (filtrate) to pass while retaining solid particles. Covers the filter plates and is the primary separation element. Replaceable for continued operation.
Hydraulic System
Applies and maintains hydraulic pressure on the filter plates throughout the filtration cycle, ensuring consistent pressing force for maximum moisture removal from the filter cake.
Feed Pump
Injects slurry into the filter press under controlled pressure, filling the chambers formed between the filter plates evenly for consistent filtration across all chambers.
Drip Trays
Collect the separated liquid (filtrate) after it passes through the filter cloth, channeling clean filtrate for reuse in the process, improving overall water efficiency in the plant.
Operation
How a Filter Press Machine Works
The filter press operation cycle consists of four sequential stages, each critical to achieving maximum solid-liquid separation and minimum residual moisture in the filter cake.
Technical Specifications
XAZGF/1000-U | Filter Plate 1000 mm
| Parameter | Unit | 30 Chambers | 40 Chambers | 50 Chambers |
|---|---|---|---|---|
| Filter Plate Dimensions | mm | 1000 | ||
| Number of Chambers | chamber | 30 | 40 | 50 |
| Filtration Area | m² | 46 | 61 | 77 |
| Filtration Volume | L | 690 | 920 | 1,150 |
| Length L | mm | 5,250 | 5,850 | 6,550 |
| Width W | mm | 1,630 | ||
| Height H | mm | 1,600 | ||
| Weight | kg | 6,300 | 7,150 | 8,000 |
* Filtration volume = number of chambers × volume per filter plate. May vary according to type of processing. Specifications subject to change without notice.
XAZGF/1250-U | Filter Plate 1250 mm
| Parameter | Unit | 40 Chambers | 50 Chambers | 60 Chambers |
|---|---|---|---|---|
| Filter Plate Dimensions | mm | 1250 | ||
| Number of Chambers | chamber | 40 | 50 | 60 |
| Filtration Area | m² | 96 | 120 | 144 |
| Filtration Volume | L | 1,440 | 1,800 | 2,160 |
| Length L | mm | 6,230 | 6,930 | 7,630 |
| Width W | mm | 1,910 | ||
| Height H | mm | 1,900 | ||
| Weight | kg | 9,350 | 10,400 | 11,400 |
* Filtration volume = number of chambers × volume per filter plate. May vary according to type of processing. Specifications subject to change without notice.
XAZGF/1500-U | Filter Plate 1500 mm
| Parameter | Unit | 80 Chambers | 100 Chambers | 110 Chambers |
|---|---|---|---|---|
| Filter Plate Dimensions | mm | 1500 | ||
| Number of Chambers | chamber | 80 | 100 | 110 |
| Filtration Area | m² | 275 | 344 | 378 |
| Filtration Volume | L | 4,120 | 5,160 | 5,670 |
| Length L | mm | 9,990 | 11,490 | 12,290 |
| Width W | mm | 2,350 | 2,800 | 2,800 |
| Height H | mm | 2,150 | ||
| Weight | kg | 20,700 | 24,000 | 25,300 |
* Filtration volume = number of chambers × volume per filter plate. May vary according to type of processing. Specifications subject to change without notice.
Key Advantages
Advantages of Industrial Filter Press Machines
John Finlay's XAZGF series filter presses deliver measurable operational and economic benefits for coal processing, mineral mining, and industrial dewatering applications.
Efficient Solid Liquid Separation
High recovery of solids with very low residual moisture, critical for concentrate recovery in mineral mining. Hydraulic pressing compresses the cake to achieve minimum moisture content in the filter cake.
Reduced Disposal Costs
Minimises slurry waste volume, reducing the cost and complexity of tailings management. Eliminates the need for large tailings ponds by converting slurry to dry filter cake for safe, compact disposal.
Water Recycling
Clean filtrate recovered from the filter press can be reused directly in the processing plant, improving overall water efficiency critical for coal washeries and mineral processing plants in water-scarce regions.
Versatile for Metal Mining
Handles heavy metals including arsenic, lead, cadmium, chromium, iron, manganese, aluminum, and nickel, making John Finlay filter presses highly versatile across metal and coal mining applications.
Concentrate Recovery
Produces dry filter cake with low moisture content, allowing recovery of valuable mineral concentrates. Filter press dewatering is a key final step in mineral beneficiation circuits before product dispatch.
Tailings Management
Reduces the volume of waste material, simplifying storage and handling. John Finlay filter presses are widely used to dewater waste fines, eliminate tailing ponds, and recover clean water in mining operations.
Applications in Mining & Industrial Processing
John Finlay XAZGF filter press machines serve critical dewatering and solid-liquid separation duties across coal processing, mineral beneficiation, and industrial applications.
Coal Processing & Tailings
Dewatering coal fine tailings and slurry waste in coal preparation plants, eliminating tailings ponds and converting wet waste into dry, manageable filter cake for compact disposal.
Mineral Concentrate Dewatering
Final dewatering of mineral concentrates (iron ore, copper, zinc, lead, and gold) after beneficiation produces a dry, low-moisture concentrate cake ready for transport to smelters.
Heavy Metal Mining
Handling slurries containing arsenic, lead, cadmium, chromium, manganese, aluminum, and nickel achieves the low residual moisture required for safe containment and further processing.
Tailings Dam Elimination
Replacing tailings dams with filter press dewatering reduces environmental risk, minimizing land use, and meets increasingly strict environmental regulations for mining operations.
Water Recovery & Recycling
Recovering clean filtrate water from coal washery and mineral processing circuits and reusing recovered water in the process to reduce freshwater consumption and operating costs.
Industrial Dewatering
General industrial solid-liquid separation applications including chemical processing, ceramics, food processing, and wastewater treatment where efficient dewatering and solids recovery are required.
About John Finlay
Filter Press Manufacturer in India
Why John Finlay?
John Finlay Eng. & Tech. Group of Companies is a global supplier of equipment for coal washing and a filter press manufacturer with 50+ years of experience and 130+ completed projects. John Finlay supplies XAZGF series filter press machines as part of complete coal washery and mineral processing circuits, ensuring seamless integration with upstream and downstream equipment.
- Filter press manufacturer with deep coal processing and mineral mining expertise
- Three XAZGF filter press models 1000mm, 1250mm, 1500mm plate sizes
- Full range of chamber configurations: 30, 40, 50, 60, 80, 100, 110 chambers
- Supplied as standalone or integrated into complete coal washery EPC projects
- Serving Coal India subsidiaries (BCCL, SECL, MCL, CCL) and private mining companies
- India-based technical support, spares, and field service teams
- Full EPC and Operations & Maintenance services available alongside equipment supply
Filter Press Machine | Frequently Asked Questions
Common questions from process engineers, plant operators, and procurement teams about filter press machines for mining and coal processing.
A filter press machine in mining is used for solid-liquid separation of slurry, separating suspended solids from liquid by forcing the slurry through a filter cloth under hydraulic pressure. The solids are retained as a dry filter cake while the liquid (filtrate) passes through. In coal processing and mineral mining, filter presses are used for tailings management (eliminating tailings ponds), concentrate dewatering, and water recovery. John Finlay’s XAZGF series achieves exceptionally low residual moisture — critical for concentrate recovery and regulatory compliance.
The main components of a John Finlay XAZGF filter press are:
(1) Frame: rigid structure supporting the entire assembly;
(2) Filter Plates: plates with filter cloths forming the slurry chambers;
(3) Filter Cloth: the filtering medium retaining solids while filtrate passes through;
(4) Hydraulic System: applies and maintains pressure on the filter plates;
(5) Feed Pump: injects slurry into the press under pressure;
(6) Drip Trays: collect the separated filtrate after it passes through the cloth.
The filter cloth is the primary wear component and is replaceable.
Filter press operation has four stages:
(1) Filling: feed pump transfers slurry into chambers formed between filter plates;
(2) Filtration: liquid passes through the filter cloth while solids are retained as a cake;
(3) Pressing: hydraulic pressure compresses the cake further, reducing residual moisture to a minimum;
(4) Cake Discharge: plates open and dry cake is released manually or automatically.
The press then resets for the next cycle. Cycle time depends on slurry characteristics, feed pressure, and desired cake dryness.
The three models differ in filter plate size and resultant capacity. XAZGF/1000-U: 1000mm plates, 30–50 chambers, filtration area 46–77 m², volume 690–1150L, weight 6,300–8,000kg. XAZGF/1250-U: 1250mm plates, 40–60 chambers, filtration area 96–144 m², volume 1440–2160L, weight 9,350–11,400kg. XAZGF/1500-U: 1500mm plates, 80–110 chambers, filtration area 275–378 m², volume 4120–5670L, weight 20,700–25,300kg. Select based on your required filtration area and throughput — larger plates are suited to higher-volume mining and coal processing operations.
Yes. Filter press dewatering is one of the most effective methods for eliminating tailings ponds in coal and mineral mining. By converting wet tailings slurry into dry filter cake, filter presses dramatically reduce the volume of material requiring storage and eliminate the need for large, environmentally sensitive tailings dams. John Finlay filter presses are widely used to dewater waste fines, achieve dry stack tailings, and recover clean water helping coal and mining operations meet increasingly strict environmental regulations.
John Finlay Eng. & Tech. Group of Companies is a global coal washery equipment supplier founded in 1974 in Brisbane, Australia, with operations in India. With 130+ coal washery projects completed and 50+ years of experience, John Finlay supplies XAZGF series filter press machines to Coal India subsidiaries (BCCL, SECL, MCL, CCL) and private coal and mineral mining companies. Filter presses are supplied as standalone units or as part of complete EPC coal washery circuits. Visit johnfinlay.in for more information.