Glass Crusher
Encyclopedia
A glass crusher provides for pulverization of glass
to a yield size of 2" or less.
Recycling
operations may range from simple manually fed self contained machines to extravagant crushing systems complete with screens
, conveyors, crushers and separators. All non-glass contaminants must generally be removed from the glass prior to recycling. The processes used in glass crushing for recycling
involves the same methods used by the aggregate
industry for crushing rock into sand (rock crusher).
VSI Crushers use a high speed rotor
with wear resistant tips and a crushing chamber designed to 'throw' the glass against. The VSI crushers utilize velocity
rather than surface force as the predominant force to break glass. In its shattered state, glass has a jagged and uneven surface. Applying surface force (pressure
) results in unpredictable and typically non-cubicle resulting particles. Utilizing velocity rather than surface force allows the breaking force to be applied evenly both across the surface of the material as well as through the mass of the material. As glass is 'thrown' by a VSI Rotor against a solid anvil, it fractures and breaks along fissures. Final particle size can be controlled by 1) the velocity at which the glass is thrown against the anvil and 2) the distance between the end of the rotor and the impact point on the anvil. The product resulting from VSI Crushing is generally of a consistent cubicle shape which may optimize yield in consumptive applications such as the fabrication of fiberglass, ceramic ware, flux agents and abrasives. Due to the highly abrasive nature of the glass material, a VSI crushing process is generally preferred over Horizontal Shaft Impact and most other crushing methods with higher maintenance and lower wear part lives.
VSI Crushers generally utilize a high speed spinning rotor at the center of the crushing chamber and an outer impact surface of either abrasive resistant metal anvils or crushed glass (or rock in an aggregate applicatio). Utilizing cast metal surfaces 'anvils' is traditionally referred to as a "Shoe and Anvil VSI". Utilizing crushed material on the outer walls of the crusher for new material to be crushed against is traditionally referred to as "rock on rock VSI".
Glass
Glass is an amorphous solid material. Glasses are typically brittle and optically transparent.The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, composed of about 75% silica plus Na2O, CaO, and several minor additives...
to a yield size of 2" or less.
Recycling
Recycling
Recycling is processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution and water pollution by reducing the need for "conventional" waste disposal, and lower greenhouse...
operations may range from simple manually fed self contained machines to extravagant crushing systems complete with screens
Screens
Screens is the third studio album from Portland, Oregon-based "troublegum" group The Mint Chicks and thus far the only Mint Chicks release not to feature bassist Michael Logie. It was released on March 16, 2009 in New Zealand, The Mint Chicks' homeland on Flying Nun Records...
, conveyors, crushers and separators. All non-glass contaminants must generally be removed from the glass prior to recycling. The processes used in glass crushing for recycling
Recycling
Recycling is processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution and water pollution by reducing the need for "conventional" waste disposal, and lower greenhouse...
involves the same methods used by the aggregate
Construction Aggregate
Construction aggregate, or simply "aggregate", is a broad category of coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates. Aggregates are the most mined material in the world...
industry for crushing rock into sand (rock crusher).
Vertical Shaft Impactor (VSI) Crushing of Glass
The use of VSI Crushers in large scale operations allow the production of up to 125 tons per hour of crushed glass cullet.VSI Crushers use a high speed rotor
Turbine
A turbine is a rotary engine that extracts energy from a fluid flow and converts it into useful work.The simplest turbines have one moving part, a rotor assembly, which is a shaft or drum with blades attached. Moving fluid acts on the blades, or the blades react to the flow, so that they move and...
with wear resistant tips and a crushing chamber designed to 'throw' the glass against. The VSI crushers utilize velocity
Velocity
In physics, velocity is speed in a given direction. Speed describes only how fast an object is moving, whereas velocity gives both the speed and direction of the object's motion. To have a constant velocity, an object must have a constant speed and motion in a constant direction. Constant ...
rather than surface force as the predominant force to break glass. In its shattered state, glass has a jagged and uneven surface. Applying surface force (pressure
Pressure
Pressure is the force per unit area applied in a direction perpendicular to the surface of an object. Gauge pressure is the pressure relative to the local atmospheric or ambient pressure.- Definition :...
) results in unpredictable and typically non-cubicle resulting particles. Utilizing velocity rather than surface force allows the breaking force to be applied evenly both across the surface of the material as well as through the mass of the material. As glass is 'thrown' by a VSI Rotor against a solid anvil, it fractures and breaks along fissures. Final particle size can be controlled by 1) the velocity at which the glass is thrown against the anvil and 2) the distance between the end of the rotor and the impact point on the anvil. The product resulting from VSI Crushing is generally of a consistent cubicle shape which may optimize yield in consumptive applications such as the fabrication of fiberglass, ceramic ware, flux agents and abrasives. Due to the highly abrasive nature of the glass material, a VSI crushing process is generally preferred over Horizontal Shaft Impact and most other crushing methods with higher maintenance and lower wear part lives.
VSI Crushers generally utilize a high speed spinning rotor at the center of the crushing chamber and an outer impact surface of either abrasive resistant metal anvils or crushed glass (or rock in an aggregate applicatio). Utilizing cast metal surfaces 'anvils' is traditionally referred to as a "Shoe and Anvil VSI". Utilizing crushed material on the outer walls of the crusher for new material to be crushed against is traditionally referred to as "rock on rock VSI".
External links
- Glass crusher for glass bottles recycling - Info and Video in Cogelme site