Search results
Results from the WOW.Com Content Network
The abrasive is metered into the blast hose and conveyed by the compressed gas through the blast nozzle. Wet blast cabinets use a system that injects the abrasive/liquid slurry into a compressed gas stream. Wet blasting is typically used when the heat produced by friction in dry blasting would damage the part.
Drilling and blasting is the controlled use of explosives and other methods, such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining , quarrying and civil engineering such as dam , tunnel or road construction.
Two blasting machines. At rear is one where the trigger works by depressing or raising the handle; at fore, one where the handle is twisted. A blasting machine or shot exploder (commonly called a plunger) is a portable source of electric current to reliably fire a blasting cap to trigger a main explosive charge.
The PCI method is based on the simple concept of primary air (termed the "conveying gas") carrying pulverized coal which injected through a lance to the tuyere (mid-bottom inlet of a blast furnace), then mixed with secondary hot air (termed the "blast") supplied through a blowpipe in the tuyere and then piped to a furnace to create a balloon ...
The second step is the drilling and blasting of the section. This creates a pile of ore that is loaded and hauled out of the mine—the final step of the mining process. [ 10 ] More modern room and pillar mines use a more "continuous" method, that uses machinery to simultaneously grind off rock and move it to the surface.
Vacuum blasting is an abrasive blasting method, [1] also referred to as dustless blasting or closed loop abrasive blasting. [2] The method is characterized by a blast tool that does abrasive blasting and collects both used blast media, and loosened particles from the surface to be treated, simultaneously.
Robotic Hydrodemolition in Folkestone, UK. Hydrodemolition of concrete exposing the rebar.. Hydrodemolition (also known as hydro demolition, hydroblasting, hydro blasting, hydromilling, waterblasting, and waterjetting) is a concrete removal technique which utilizes high-pressure water, often containing an abrasive material, to remove deteriorated and sound concrete as well as asphalt and grout.
Nonel shock tubes (pink, red, orange, yellow) with Orica surface delay connector (blue) in use. Nonel is a shock tube detonator designed to initiate explosions, generally for the purpose of demolition of buildings and for use in the blasting of rock in mines and quarries.