Choosing the Right Crusher

The jaw crusher is a fundamental machine designed for crushing hard and abrasive materials like granite, ores, and recycled concrete, primarily used for industrial applications. It comprises a fixed plate and a movable plate known as jaws, which trap and crush the rock. The motion is powered by a motor and belt that drive an eccentric shaft, rotating the movable jaw. A spring mechanism returns the jaw to its initial position, allowing crushed materials to descend gradually into the machine. Once the fragments are sufficiently small, they drop between the two jaws where further crushing occurs. The end product, small stones, is mainly utilized in concrete production for construction and roadwork.

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Jaw crushers utilize a straightforward yet reliable mechanism that requires minimal maintenance or engineering expertise. They are the most widely used crushers globally, particularly suitable for reducing large blocks into smaller segments that can be processed by other machinery.

Advantages:

• Low maintenance and operational costs due to fewer moving components.

• Can reduce raw material size to approximately 150 mm.

Disadvantages:

• Not ideal for smaller material needs (under 150 mm); options are available in conjunction with other crushers for finer outputs.

• Inadequate for materials that include clay or metals mixed with rock.

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When evaluating buying the right crusher for your operation, various factors must be taken into account. These range from budget constraints to the scale of your operation. Conducting thorough research is essential to achieve operational and economic efficiency after the installation of your crusher.

In this text, we will explore the vital aspects of crushers through 9 Q&A that will guide you in your decision-making process. Let's begin!

01

What are crushers used for?

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Fine mineral particles are critical for processing plants. Crushers are typically more affordable than ball mills, which is why they are employed to reduce large stones or minerals into coarser pieces, generally larger than 8 mm, thus lowering grinding and operation costs. The primary distinction is that ball mills produce finer output, reaching sizes as small as 0.74 mm.

02

How do crushers work?

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The prevalent crushing technique involves using mechanical force to achieve the desired outcome. Five primary methods are employed, including squashing, chopping, snapping, grinding, and shredding. Each method is tailored for specific ore types. For instance, squashing works well with hard stones, whereas cohesive ores benefit from both squashing and grinding, while soft stones are best handled via chopping and shredding.

03

How many types of crushers are there?

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Based on their crushing mechanisms and operational principles, crushers are typically classified into six categories: jaw crushers, cone crushers, roll crushers, impact crushers, grind crushers, and gyratory crushers. Each type has specific sizes and applications, with jaw or gyratory crushers generally used for primary crushing, and standard or short head cone crushers for subsequent stages.

04

What is the price of a crusher machine?

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Compared to other mining equipment, crushers remain relatively inexpensive in processing plants, with prices ranging from $1,000 to $5,000 depending on factors like capacity, quality, and after-sales service. Higher prices often equate to better quality.

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Additional reading:
A Comprehensive Guide to Choosing a Fully Automatic Biscuit ...
Excavator Bucket Types: A Comprehensive Guide

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06

What are the crushing processes?

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In industry, five main crushing processes are recognized: coarse crushing, secondary crushing, fine crushing, coarse grinding, and fine grinding. The material sizes involved in different stages are as follows:

• Coarse crushing: input particles ~500mm, output 400~125mm.

• Secondary crushing: input particles 400~125mm, output 100~25mm.

• Fine crushing: input particles 100~25mm, output 25~5mm.

• Coarse grinding: input particles 25~5mm, output 1~0.3mm.

• Fine grinding: input particles 1~0.3mm, output 0.1~0.074mm.

07

Is Stone Crusher a profitable business?

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Definitely! Crushers are essential for reducing large particles into smaller fragments, contributing to savings in grinding costs at processing plants and lowering transportation expenses.

08

How to choose a crusher for your plant?

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Choosing the appropriate model and size for your crusher will depend on various factors such as ore characteristics, plant scale, and the local terrain. It's critical to consider all these aspects when selecting.

Generally, for harder stones, jaw and roller crushers are preferred. Larger plants located on hillsides utilize roller crushers, while smaller operations on flat ground typically employ jaw crushers.

09

What is a secondary crusher?

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A secondary crusher is typically a previously used crusher sourced from other operations or quarries. However, some manufacturers may sell defective equipment or returned items as secondary crushers.

10

Where can I buy a secondary crusher?

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Manufacturers can be consulted for secondary crushers. However, given their relatively low cost, it is advisable to invest in new crushers if your budget permits, ensuring higher quality and better after-sales support.

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To wrap up

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With over two decades of experience, Mining Pedia has been producing crushers, distributing them to more than 90 countries worldwide. We excel in not only providing crushers but also offering comprehensive mineral processing solutions.

Explore our mining equipment options to identify the unit that best meets your needs. Should you have any questions, feel free to leave a message or contact our online support.

Interested in learning more about coarse crusher? Contact us today to secure an expert consultation!