Granite is a kind of magmatic rock which formed below the surface.Its main component is quartz, feldspar and mica. The color sually yellow with pink, or gray. It has hard texture, beautiful color, good pressure and is a high-quality building gravel m...

Bauxite is the ore composition which are gibbsite, bauxite as the main mineral. Bauxite is an important raw material to produce aluminum metal. Bauxite application areas are two aspects of metal and non-metallic, metal aluminum is second important me...

The main component of limstone is calcium carbonate (CaCO3) and its Mohs hardness is 3. After crushing, limestone will be turned into particles, that is, stone, sand, or further ground into limestone powder which is widely used in building materials,...

Mechanical sand is the rock particles made by the crushing and screening equipment with a number of technical indicators such as fineness modulus of 2.6~3.0, stone powder content of 3% to 8%, needle-like 8%, water content of 3% to 5%,etc. It can be w...

Yesterday, Kefid has just ended the 2017 spring Canton Fair tour. At the show, Kefids all-star crushing and grinding equipment received many attention from the worlds mining customers. Canton Fair is Chinas import and export trade fairs which is held...

In view of the current market demand for high-quality mechanism sand, Kefid developed VU series aggregate optimization system.It uses stone or melon stone and other cheap gravel sand as raw materials with adjustable, environmentally friendly, low-cos...