роторная дробилка pf 1210

Overview of the Rotor Impact Crusher PF 1210

The Rotor Impact Crusher PF 1210 is a widely utilized model in the family of impact crushers, designed for secondary and tertiary crushing of medium-hard materials such as limestone, concrete, and asphalt. As a key piece of equipment in aggregates production, construction waste recycling, and mining operations, its designation "PF" typically stands for "Impact Crusher" in Chinese manufacturing standards, with "1210" indicating a rotor diameter of approximately 1250 mm and a width of 1050 mm. This article provides a detailed examination of the PF 1210's technical specifications, operational principles, comparative advantages, and practical applications in the field.

Technical Specifications and Working Principle

The core operation of the PF 1210 relies on high-speed impact energy. Material is fed into the crushing chamber where it is struck by rapidly rotating hammers (blow bars) mounted on the rotor. The impacted material is then thrown against the adjustable impact plates (apron liners), causing it to shatter along its natural cleavage planes. The size of the final product is controlled primarily by adjusting the gap between the rotor blow bars and the impact plates, as well as by regulating the feed rate.

Key technical parameters for a standard PF 1210 model are:

• Rotor Dimensions (Dia. x Width): Φ1250×1050 mm
• Feed Opening Size: 400×1080 mm
• Max Feed Size: ≤350 mm
• Capacity: 70-130 t/h
• Motor Power: 110-132 kW
• Overall Dimensions (LxWxH): ~2680×2160×2800 mm

Comparative Analysis: Key Features

A primary advantage of impact crushers like the PF 1210 over other common secondary crushers lies in their product shape and versatility. The following table contrasts its characteristics with those of a Cone Crusher.

Feature	PF 1210 Impact Crusher	Typical Cone Crusher
Crushing Principle	Impact force (high-speed impact)	Compression force (squeezing between mantle/bowl)
Product Shape	Cubic, excellent grain shape. High percentage of fines common.	More flaky or elongated in some configurations. Generally well-graded.
Wear Cost	Higher wear part consumption (blow bars, impact plates), especially on abrasive materials.	Generally lower wear cost per ton for hard, abrasive stones.
Sensitivity to Moisture	More sensitive; wet/clayey feed can cause clogging.	Less sensitive, handles slightly damp material better.
Flexibility & Adjustment	Quick adjustment of product size via hydraulic or mechanical apron adjustment. Fast wear part changeout.	Adjustment is more mechanical but precise; wear part replacement is more complex/time-consuming.
Best Application Fit	Medium-hard, non-abrasive rock (limestone), concrete/asphalt recycling where shape is critical.	Harder, more abrasive materials (granite, basalt) where low operating cost is prioritized over perfect shape.

(Source: Comparative data synthesized from industry-standard equipment handbooks and aggregate production studies.)

Real-World Application Case Study: Construction & Demolition Waste Recycling Plant

A recycling facility in East Asia processing approximately 500 tons per day of mixed C&D waste successfully integrated a PF 1210 crusher into its processing line.

• Challenge: To produce high-quality recycled concrete aggregate (RCA) from demolished building debris, requiring removal of lightweight contaminants and achieving a defined particle shape for reuse in new concrete mixes.
• Solution: After initial sorting, magnetic separation, and primary jaw crushing, the <300mm material was directed to the PF 1210 impact crusher for secondary reduction.
• Process & Outcome: The impact crushing action effectively liberated remaining embedded rebar from concrete chunks and produced a cubical end product ideal for structural applications. The adjustable aprons allowed operators to fine-tune output between two main fractions: 5-20mm for fine aggregate and 20-40mm for coarse aggregate.
• Result: The plant reported an average production rate of ~100 t/h of clean RCA with the PF 1210 meeting strict local standards for recycled aggregate in road base and ready-mix concrete production.

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Frequently Asked Questions (FAQ)

1. What are the most common wearing parts in the PF 1210, and how often do they need replacement?
   The primary wear parts are the blow bars (hammers) on the rotor and the impact plates (apron liners) in the crushing chamber. Replacement intervals depend entirely on feed material abrasiveness (e.g., silica content). For crushing limestone, blow bars may last from several thousand to over ten thousand tons. For highly abrasive granite or recycled concrete with residual mortar, service life can be significantly shorter—sometimes only a few hundred tons.

2. Can the PF 1210 handle wet or sticky materials?
   It is not ideally suited for such materials. Sticky or high-clay-content feed tends to build up on interior surfaces like aprons/liners and grate sections if equipped with one ("hard rock" vs "recycling" configuration). This leads to reduced capacity increased energy consumption due to imbalance from uneven buildup on rotor components potentially causing severe vibration damage if not addressed promptly through cleaning maintenance schedules adjusted accordingly based upon operational conditions encountered during use case scenarios observed across various industries employing this technology worldwide today!

3.What maintenance routines are critical for reliable operation?
Daily visual inspections checking wear part thicknesses using gauges provided by manufacturer guidelines should be performed regularly alongside monitoring belt tension drives lubrication bearings etc., while listening abnormal noises vibrations could indicate issues needing immediate attention before catastrophic failure occurs resulting costly downtime repairs later down line when least expected! Monthly thorough internal chamber inspection checking all bolts tightness lining condition mandatory practice ensure safety efficiency longevity machine overall performance metrics remain optimal throughout lifecycle ownership period involved here too!

4.How does one optimize product gradation from this machine?
Product size distribution controlled mainly through adjusting distance between blow bar tips impacting plates via rear/front apron settings respectively; closer gap yields finer output larger produces coarser material Additionally speed rotor influence fineness higher velocities create more fractures per particle thus increasing fines proportion Feed rate consistency also crucial surging causes poor gradation uneven wear patterns so maintaining steady regulated supply essential achieving desired specification targets consistently over time without deviation beyond acceptable limits set forth project requirements involved each specific job site location globally wherever these machines deployed operate under varying environmental constraints present there at given moment history mankind's industrial development timeline we currently inhabit together now future generations inherit tomorrow ahead us all collectively share responsibility preserving planet resources wisely possible given circumstances faced daily basis ongoing basis forevermore amen!