Phosphate Rock Hammer Grinder for Fertilizer Blend
Phosphate rock hammer grinders are used for medium and fine crushing of phosphate rock, producing qualified fine powder for fertilizer blending and compound fertilizer production. Prices typically range from $8,000 to $120,000. Feed opening size: ≤350mm Production capacity: 5-80 tons/hour Discharge opening adjustment range: 0.5-20mm Spindle speed: 800-1800 rpm Motor power: 11-132kW
At a Glance： Phosphate Rock Hammer Grinder Key Specs
This hammer grinder delivers 2-22 tons per hour output with adjustable discharge size from 1 to 15mm. Ideal for phosphate rock crushing in SSP, NPK and TSP fertilizer production lines.
What Is a Phosphate Rock Hammer Grinder？
The Phosphate Rock Hammer Grinder for Fertilizer Blend is an industrial device specifically used for phosphate rock crushing, processing lump ore into powdered material required for fertilizer production. Global phosphate rock reserves stand at approximately 71 billion metric tons, with Morocco holding over 70 percent of that share.For primary crushing applications, our jaw crusher machine offers higher capacity options for larger feed sizes.
This equipment is designed for phosphate rock with Mohs hardness ranging from 3 to 5, employing impact crushing principles with hammer tip speed reaching 75 to 85 meters per second. The housing is fabricated from 20-millimeter steel plates with replaceable high-manganese steel liners. The Tres Estradas project in Brazil increased annual capacity from 100,000 tons to 300,000 tons by adding a hammer mill, validating the role of the equipment for Fertilizer Blend in capacity expansion.
Phosphate Rock Hammer Grinder for Fertilizer Blend Video Showcase
How Does a Phosphate Rock Hammer Grinder Work？
Material enters the crushing chamber through the top feed inlet and is fractured by the impact of high-speed rotating hammers. The fragments then strike the impact plates and breaker bars, undergoing multiple impacts and grinding actions before being reduced to size. Particles smaller than the screen aperture discharge from the bottom, while oversize particles remain in the chamber for further crushing. The equipment for Fertilizer Blend achieves a crushing ratio of 10 to 20, with discharge fineness adjustable by changing screens.
When changing ore sources, it is recommended to conduct trial runs with small batches of 2 to 3 tons while monitoring motor current variations, and then proceed with full-scale feeding after confirming normal readings. Egyptian phosphate rock, with its moderate hardness, has become a commonly used raw material source for SSP production lines worldwide.For finer particle size requirements after primary grinding, our impact crusher machine can achieve even smaller output sizes.
Phosphate Rock Hammer Grinder Technical Specifications
The equipment for Fertilizer Blend is available in multiple models. The specific technical specifications are shown in the table below.
| Model | Rotor Size mm | Max Feed Size mm | Discharge Size mm | Capacity t/h | Motor Power kW |
| PC400×300 | 400×300 | ≤100 | <15 | 2-10 | 11 |
| PC600×400 | 600×400 | ≤220 | <15 | 10-22 | 18.5-22 |
| CF400 | 400×400 | ≤100 | 1-5 | 0.5-3 | 4.5 |
| CF500 | 500×500 | ≤160 | 3-15 | 3-8 | 7.5 |
| CF600 | 600×600 | ≤180 | 3-15 | 8-15 | 11 |
This equipment handles materials with compressive strength not exceeding 100 MPa, with moisture content recommended below 15 percent. A mobile modular crushing and screening installation at the OCP Group's Benguerir mine in Morocco achieves an annual processing capacity of 3.5 million tons. When silica content in phosphate rock exceeds 15 percent, hammer wear accelerates, and carbide overlay welded hammers are recommended as an option.
Core Advantages of Phosphate Rock Hammer Grinder for Fertilizer Production
The equipment for Fertilizer Blend is characterized by three aspects: simplified process flow, particle size control, and maintenance convenience. Its applicable materials cover major scenarios including phosphate rock crushing, SSP production, and NPK compound fertilizer compounding.
Simplified process flow: This equipment can reduce medium-sized phosphate rock to target fineness in a single pass, eliminating multiple crushing stages. Pacific Fertiliser in Australia purchased a 150 kW hammer mill to operate in series with a jaw crusher and cone crusher for producing agricultural powders.
Particle size control: Discharge fineness is adjustable by changing screens. The hammers are made of high-chromium alloy, with service life ranging from 800 to 1,200 hours when processing medium-hardness phosphate rock.
Maintenance convenience: The quick-opening access door design allows hammer replacement and screen cleaning without complex disassembly, substantially reducing equipment downtime.
Applicable materials: This equipment handles various hardness sources including Moroccan sedimentary phosphate, Florida phosphate ore, and Egyptian phosphate rock. In SSP production, it reduces ore to 1 to 3 millimeter feed size. It can also process byproduct materials such as phosphogypsum.
Real-World Performance： Phosphate Rock Hammer Grinder Case Studies
Case 1： 200% Capacity Increase in Brazil
At the Tres Estradas project in Brazil, our equipment helped increase annual production capacity from 100,000 tons to 300,000 tons. The optimized crushing system reduced downtime by 30% and extended hammer life by 25%.
Case 2： 3.5 Million Tons/Year in Morocco
For the OCP Group's Benguerir mine in Morocco, MachRise supplied a complete phosphate rock grinding solution handling 3.5 million tons annually. The system maintained consistent 1-10mm discharge output with less than 8% flakiness.
Case 3： 150kW Hammer Grinder for Australian Fertilizer Plant
Pacific Fertiliser in Australia selected MachRise's 150kW hammer grinder for their phosphorus fertilizer plant. The equipment achieved 18 T/H throughput with 92% uptime over the first 12 months of operation.
How to Select the Right Phosphate Rock Hammer Grinder？
Selecting the equipment for Fertilizer Blend requires comprehensive evaluation across three dimensions: capacity requirements, ore hardness, and discharge fineness, while also considering supporting equipment configuration.
Capacity requirements: Choose smaller models for daily processing below 50 tons, and medium models for 100 to 200 tons per day. Note that high fine particle content in feed material can reduce actual capacity below design values. Installing screening equipment at the feed end to separate fines in advance is recommended.
Ore hardness: Select standard models for Mohs hardness 3 to 4, and heavy-duty models for hardness above 5. Egyptian phosphate rock with moderate structure suits hammer milling, while igneous phosphate rock requires greater crushing force.
Discharge fineness: TSP production requires finer particle sizes, while calcium magnesium phosphate production can pass through coarser screens. Confirm that the target fineness falls within the adjustable range of the Phosphate Rock Hammer Grinder for Fertilizer Blend. The Tres Estradas project in Brazil plans to increase capacity from 100,000 to 300,000 tons by adding a hammer mill, demonstrating the importance of reserving capacity margin during selection.
For operations requiring secondary crushing stages, consider our cone crusher machine as part of your complete processing line.
Phosphate Rock Hammer Grinder Maintenance Guide
Daily maintenance of it for Fertilizer Blend covers three core tasks: hammer inspection and replacement, bearing lubrication, and bolt retightening. The equipment also has clear usage limitations regarding high-moisture materials and high-hardness ores.
Hammer replacement: Inspect hammer wear after each shift. Replace or rebuild by hardfacing when weight loss reaches 20 percent. After two hardfacing repairs, rebuilt hammers can achieve 70 to 80 percent of new hammer service life.
Bearing lubrication: Use No. 2 lithium grease, with initial fill at 50 to 70 percent of bearing housing volume, and replenish 20 to 30 grams every 200 hours. Hammer bolts tend to loosen during initial operation and should be retightened twice within the first 24 hours, then checked weekly.
Usage limitations: Not suitable for materials with moisture content exceeding 18 percent. Installing drying equipment at the feed end is recommended in such cases. Hammer wear accelerates and energy consumption rises when processing high-hardness igneous phosphate rock. The Phosphate Rock Hammer Grinder for Fertilizer Blend generates noise levels of approximately 85 to 90 dB when idling and 95 to 100 dB under full load; sound enclosures can be installed as needed.
FAQ： Phosphate Rock Hammer Grinder for Fertilizer Blend
The following four questions are commonly raised by customers during sales and after-sales service.
How to resolve frequent screen plugging when the Phosphate Rock Hammer Grinder for Fertilizer Blend processes high-clay ores？
Install a vibrating screen at the feed end to prescreen out particles below 5 millimeters, which extends continuous operation time.
What causes sudden coarsening of discharge from the Phosphate Rock Hammer Grinder for Fertilizer Blend when the screen appears intact？
This is typically caused by the hammer-to-screen gap expanding from 3 millimeters to over 6 millimeters over extended operation. Restoring the gap to the standard value resolves the issue.
Can the hammers of the Phosphate Rock Hammer Grinder for Fertilizer Blend be repaired and reused？
High-chromium cast iron hammer faces can be rebuilt by hardfacing after wear. After two repairs, rebuilt hammers can achieve 70 to 80 percent of new hammer service life.
What should be noted when restarting the Phosphate Rock Hammer Grinder for Fertilizer Blend after shutdown？
Confirm that no material remains in the crushing chamber before startup. Starting under full load can cause motor overload. The correct procedure is to start empty and gradually feed material after stable operation.
