COQUINA CRUSHING GRINDING PLANTS

Coquina

Coquina is also called shell limestone , it's an incompletely consolidated sedimentary rock. Coquina was formed in association with marine reefs and is a variety of "coral rag", technically a subset of limestone.

Occasionally quarried or mined and used as a building stone in Florida for over 400 years, coquina forms the walls of the Castillo de San Marcos, Saint Augustine. The stone makes a very good material for forts, particularly those built during the period of heavy cannon use. Because of coquina's softness, cannon balls would sink into, rather than shatter or puncture, the walls of the Castillo de San Marcos.

When first quarried, coquina is extremely soft. This softness makes it very easy to remove from the quarry and cut into shape. However, the stone is also at first much too soft to be used for building. In order to be used as a building material, the stone is left out to dry for approximately one to three years, which causes the stone to harden into a usable, but still comparatively soft, form.

Coquina has also been used as a source of paving material. It is usually poorly cemented and easily breaks into component shell or coral fragments, which can be substituted for gravel or crushed harder rocks. Large pieces of coquina of unusual shape are sometimes used as landscape decoration.

Because coquina often includes a component of phosphate, it is sometimes mined for use as fertilizer.

According to the characteristics of coquina ,(shell limestone),the suitable crusher includes jaw crusher,cone crusher,impact crusher,VSI crusher and ball mill,vertical mill.

Crushing plant:

The coquina crushing plant consists of jaw crusher,cone crusher and impact crusher.Jaw crusher is the primary crusher of the crushing plant and crush the stone into cobble(bigger gravel).The jaw crusher is in high output and low cost . Cone crusher and impact crusher is the secondary crusher to crush the cobble into smaller one,called gravel or aggregate.Then the material goes through vibrating screen and sand washing machine. The output come out as eligible aggregate . They can be used in building or highway road.

Grinding plant
As coquina often includes rich phosphate , it is sometimes mined for use as fertilizer.But before that , the ball mill and vertical mill is the most suitable machine for processing the coquina.
Ball mill is the common mill for pulverizing fine powder.And it's final products' grain size depends on the particle size of the media ball. After the ball ,the mixer with other materials is convenient.

If you want to mine coquina ,the Zenith crusher and grinder is for that . Zenith has been adopted into making the machine for 30 years.Every year the technican makes significant progress.