Sand is the largest consuming construction material for buildings, highways, metallurgy, concrete, cement, glass, ceramics, paper industry, and petrochemical industry. Sand generally includes natural sand and machine-made sand. However, natural sand, river sand could not meet the increasing demand in some countries and regions. Meanwhile, over-exploitation of natural sand will undoubtedly damage the environment. Thus, the substitution of machine-made sand to river sand has become a steady tendency. At present, machine-made sand has been applied in mortar, concrete and masonry blocks. We have exported sand making machines to Asia, America, Europe and Africa, particularly in places such as Australia, Indonesia, Chile, Venezuela, Kazakhstan, Kyrgyzstan and so on. Here we can provide you with silica sand crusher, such as jaw crusher for primary crushing,cone crusherand impact crusher for secondary crushing and tertiary crushing. Apart from silica crushing equipment, there are grinding machine for further grinding. If you need a complete silica crushing and screening solution, please tell us the exact info about your raw materials, such as input size, and your desired capacity. We will design special silica crushing plant according to your situation. Silicon is the second most common element in the Earth's crust, comprising 25.7% of the Earth crust by weight. It is shiny, dark gray with a tint of blue. Silicon is never found in its natural state, but rather in combination with oxygen as a silicate ion (SiO4) in silica-rich rocks such as obsidian, granite, diorite, and sandstone. Feldspar and quartz are the most significant silicate minerals. Silicon alloys with a variety of metals, including iron, aluminum, copper, nickel, manganese and ferrochromium. copper sand making plant Silica which is the chemical name of quartz and a synonym for silicon dioxide is widely used in manufacture of special steels and cast iron, aluminum alloys, glass and refractory materials, ceramics, abrasives, water filtration, component of hydraulic cements, rubber reinforcing agent, etc.. silica sand making plant.