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...

Silica is the general term for vein quartz, quartzites and quartz sandstones. It is mainly used to produce acid refractory bricks in metallurgical industry. Pure silica can be used to make quartz glass or refine monocrystalline silicon. In chemical i...

Recently, after the last debug testing, Kefids C6X series jaw crusher has been successfully launched. The equipment adopts the worlds leading crushing technology and can make efficient primary crushing for all kinds of hard ores and rocks. C6X series...