When it comes to mining and heavy construction, the right equipment is crucial f...
Among the various types of crushers, mobile jaw crushers stand out as versatile, powerful, and efficient solutions. This article will delve into the different types of crushers, focusing on mobile jaw crushers, their components, operational principles, applications, and notable features.
Crushers come in various forms, each serving unique purposes and applications. The most common types include:
Jaw Crushers: They are used primarily for the initial breaking down of material. They use compressive force to break down large rocks into smaller pieces.
Cone Crushers: These are used after jaw crushers to produce finer materials by crushing rocks between a gyrating spindle and a concave hopper.
Impact Crushers: Utilizing the force of impact rather than pressure, these crushers are suitable for softer materials like limestone.
Gyratory Crushers: Similar to jaw crushers, these crushers are used for heavy mining and quarrying applications.
Among these, mobile jaw crushers have emerged as a significant and indispensable tool, especially in construction, demolition, and mining industries. Their mobility and powerful functionality make them a favorite choice for most contractors.
A mobile jaw crusher is a complex machine with various parts working in unison. Key components include:
Chassis: The base frame that supports the entire machine and provides mobility.
Jaw: Consisting of a fixed jaw and a movable jaw, this part crushes the material.
Vibrating Feeder: Feeds the material into the crusher in a controlled manner.
Conveyor Belt: Transport crushed material from the jaw to different stages of the process.
Power Unit (engine): Powers the crusher and its auxiliary parts.
Tracks: Allow the crusher to move across rough terrain and uneven surfaces.
Main parts of the jaw crusher are illustrated in the below image
The working principle of a mobile jaw crusher is both straightforward and highly effective, harnessing the power of compressive force to break down materials into manageable sizes. Initially, material is uniformly fed into the crusher by a vibrating feeder, which ensures a consistent flow and prevents blockages. Once inside the crushing chamber, the material is subjected to intense compressive force between a fixed jaw plate and a moving jaw plate. The moving jaw, driven by a robust motor and an eccentric shaft, oscillates to exert force on the material, crushing it against the fixed jaw and breaking it into smaller pieces. Typically, the jaw crusher's motor can generate a power output ranging from 100 to 500 horsepower, depending on the model and application.
For example, a Powerscreen Premiertrak 760 mobile jaw crusher can process up to 750 tons of material per hour, demonstrating remarkable efficiency. The crushed material, which can be reduced to sizes as small as 6 inches (150mm) or less, then falls or is pushed down by gravity and is subsequently discharged onto a conveyor belt. This belt transports the material for further processing or to a designated area. This entire process not only maximizes output but also minimizes operational costs by allowing on-site processing, significantly reducing the need for material transportation and handling.
Mobile jaw crushers are ideal for construction sites, particularly for breaking down construction waste and recycling materials on-site. During the demolition of old buildings, mobile jaw crushers can crush concrete, bricks, and other debris into reusable aggregates, reducing the need for transporting waste to landfills and bringing in new materials.
In quarries, mobile jaw crushers efficiently crush large rocks into smaller aggregates for further processing. They are essential for producing materials like gravel, sand, and various grades of stone used in construction. An example is the Graniteville Quarry in Missouri, where mobile jaw crushers process around 2 million tons of granite annually, transforming it into essential construction material.
They are crucial for primary crushing of extracted ore, making subsequent processing easier. For instance, in gold mining, the initial crushing by a mobile jaw crusher can reduce large rocks containing gold ore into smaller pieces, facilitating further processing and extraction.
Crushing helps in recycling materials and waste management by reducing the size of various types of waste, including metals, plastics, and glass to make it easier to handle the materials for further processing.
Mobile jaw crushers come equipped with features that enhance their usability and performance:
Strong Mobility
One of the most significant features of mobile jaw crushers is their ability to move across different sites without the need for disassembly.
Low Transportation Cost
By processing materials directly at the source, mobile jaw crushers drastically reduce transportation costs. Instead of hauling raw materials to a central processing plant, the crusher can be brought to the material.
Versatility
Suitable for various types of materials and applications, mobile jaw crushers can handle everything from hard rock to recycled concrete. Their versatility makes them an ideal choice for a wide range of industries, including construction, mining, demolition, and recycling.
Ease of Maintenance
Mobile jaw crushers provide easy access to parts that can quickly be disassembled and removed for routine maintenance, repair, replacement of worn parts such as filters or belts. This ease of maintenance reduces downtime and ensures that the crusher remains in optimal working condition.
Energy-Saving and Environment Friendly
Modern mobile jaw crushers utilize advanced technologies and materials to minimize energy consumption during operation, and produce fewer emissions compared to traditional crushers, making them more environmentally friendly. The powerscreen Premiertrak 600 jaw crusher features a Tier 4 Final / EU Stage IV emissions-compliant engine, which can reduce fuel consumption significantly.
As an authorized dealer for Powerscreen UAE, our inventory includes brand new jaw crushers for sale, known for their reliability and performance, in addition to our jaw crusher rental service for projects that require temporary crushing capabilities, providing an economical and flexible solution.
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