Gravel Crusher
Gravel is rockthat is any loose rock that is larger than 2 mm (0.079 in) in itssmallest dimension (about 1/12 of an inch) and no more than 64 mm(2.5 in).
Gravel is an important commercial product, with a number ofapplications. Many roadways are surfaced with gravel, especially inrural areas where there is little traffic. Globally, far more roads aresurfaced with gravel than with concrete or tarmac; Russia alone hasover 400, 000 km (250, 000 mi) of gravel-surfaced roads. Both sand andsmall gravel are also important for the manufacture of concrete.Gravelis the raw materials for construction, road, bridge and railway buidingand small gravels are also important for the manufacture of concrete.Itis used for making sand from marble, limestone, basalt, quartz, sandstone. Therefore, gravel crusher is the esssential mining andconstruction machine.
Geological formation
Large gravel deposits are a common geological feature, being formedas a result of the weathering and erosion of rocks. The action ofrivers and waves tends to pile up gravel in large accumulations. Thiscan sometimes result in gravel becoming compacted and concreted intothe sedimentary rock called conglomerate. Where natural gravel depositsare insufficient for human purposes, gravel is often produced byquarrying and crushing hard-wearing rocks, such as sandstone, limestone, cobblestone, or basalt. Shibang’ portable rock crusher can meetyour business needs. Quarries where gravel is extracted are known asgravel pits. Southern England possesses particularly largeconcentrations of them due to the widespread deposition of gravel inthe region during the Ice Ages.
Types
- Bank gravel: gravel intermixed with sand or clay.
- Bench gravel: a bed of gravel located on the sideof a valley above the present stream bottom, indicating the formerlocation of the stream bed when it was at a higher level.
- Creek rock: this is generally rounded, semi-polished stones, potentially of a wide range of types, that aredredged or scooped from river beds and creek beds. It is also oftenused as concrete aggregate and less often as a paving surface.
- Crushed rock: rock that is mechanically broken into small pieces then sorted by filtering through different size mesh.
- Crushed stone: this is generally limestone ordolomite that has been crushed and graded by screens to certain sizeclasses. It is widely used in concrete and as a surfacing for roads anddriveways, sometimes with tar applied over it. Crushed stone may alsobe made from granite and other rocks. A special type of limestonecrushed stone is dense grade aggregate, or DGA, also known as crusherrun. This is a mixed grade of mostly small crushed stone in a matrix ofcrushed limestone powder.
- Fine gravel: gravel consisting of particles with a diameter of 2 to 4 mm.
- Lag gravel: a surface accumulation of coarse gravel produced by the removal of finer particles.
- Pay gravel: also known as “pay dirt”; a nicknamefor gravel with a high concentration of gold and other precious metals.The metals are recovered through gold panning.
- Pea gravel: gravel that consists of small, roundedstones used in concrete surfaces. Also used for walkways, driveways andas a substrate in home aquariums.
- Piedmont gravel: a coarse gravel carried down fromhigh places by mountain streams and deposited on relatively flatground, where the water runs more slowly.
- Plateau gravel: a layer of gravel on a plateau or other region above the height at which stream-terrace gravel is usually found.
- River run gravel: naturally deposited gravel found in and next to rivers and streams.
Gravel crushing plant
Gravels are obtained mainly from rivers, alluvium, offshore areas and mine tailings such as river stone, pebble, cobble.
Gravel crushing plant is consist of several types of stone crushing and screening machine.Firstly, the stone materials will be evenly entered the coarse crushingmachine to proceed the primary crushing. And then the coarse materialswill be entered the impact crusher by the belt conveyor to proceed the secondary crushing. And the fine stone materials will be entered the vibrating screen to produce various stone specification. And particle size which havenot satisfied the requirements will receive the repeated crushing. Thesize of finished gravel can be adjusted according to the customers’requirements. The complete gravel crushing and screening plant hasdifferent capacity because of the difference of crushers you choose.wewill provide you the comprehensive service in the before, during andafter –sales service. According to the specific production site, wewill strive to complete a most reasonable, economic production line forour customers.
Gravel crusher manufacturer
Shibang is a famous manufacturer of rock gravel crusher in China, andsupply all kinds of stone crushers, grinding machine and other miningequipments for sale. Now, our gravel crusher has been exported to manycountries, such as USA, Egypt, South Africa, Mongolia, Russia, Germany, Malaysia, Pakistan, India, Iran etc.We not only supply gravel crusher, but also a series of installation and maintenance service.
And the crushing and grinding mill production line we company have produced can solve various stonecrushing and grinding lines. And the equipment configure of theproduction line depend on the stone materials specification andapplication customer require.
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