What does a rock crusher do?

A rock crusher is a machine designed to reduce the size of large rocks into smaller pieces. Here's a more detailed look at what it does:

1. Primary Crushing

Jaw crushers are often used for the first stage of crushing. They work like a vice. The movable jaw exerts force on the rock, compressing it against the fixed jaw. This breaks the rock into smaller pieces. For example, in a quarry, large boulders that are several feet in diameter can be reduced to pieces that are a few inches across.

Gyratory crushers are also used for primary crushing in some cases. They have a conical head that gyrates (rotates in a circular motion) within a fixed bowl -shaped cavity. The rock is crushed as it is caught between the moving conical head and the stationary cavity walls.

2. Secondary and Tertiary Crushing

Cone crushers are typically used in secondary and tertiary crushing stages. They operate by squeezing the rock between an eccentrically rotating mantle and a fixed concave liner. This further reduces the size of the rock fragments. The crushed material from a cone crusher can range from gravel - sized particles to fine sand - like grains, depending on the settings of the crusher.

Impact crushers are another option. They work by using a high - speed rotor with hammers that strike the rocks. The rocks are then thrown against a breaker plate, causing them to shatter into smaller pieces. Impact crushers are good for producing more cubical - shaped products, which are desirable for some construction applications such as making concrete aggregates.

3. Purpose of Crushing

The crushed rock has many applications. In the construction industry, it is used to make aggregate for concrete and asphalt. The different sizes of crushed rock are carefully selected and blended to provide the right properties for these building materials. For example, larger crushed stone (about 1 - 2 inches) can be used as a base material for roads, while finer crushed stone (less than 0.5 inches) can be part of the concrete mix.

In the mining industry, rock crushers are used to extract valuable minerals from the ore. By crushing the ore into smaller pieces, it becomes easier to separate the valuable minerals from the waste rock through processes like flotation or magnetic separation.  Baichy Machinery Company is headquartered in Zhengzhou, Henan. As a manufacturer specializing in the production of rock crushers for more than 20 years, it has a good reputation in the industry. If you have any questions about rock crushing machine, please click on the online customer service, which will answer you 24 hours a day.