The down-the-hole drilling machine is suitable for large-diameter blast hole rock drilling operations in small and medium-sized mines, road construction, water conservancy, and stonework, as well as dri. [pdf]
[FAQS about 70 type down-the-hole drilling rig FAQ]
Considering escalating water costs and regulations, plants have sought ways to decrease their cooling water requirements. Compressed air systems consume a high volume of water to cool the compressed air. [pdf]
The components of our ZR/ZT oil-free rotary screw air compressor range have been carefully designed in-house. This reduces losses and pressure drop to a minimum, resulting in the highest compressor pa. [pdf]
There are two basic types of screw compressor: oil-injected and oil-free. Oil-injected rotary screw compressors are the most common, since they are the cheaper ones of the two types. Oil-free screw co. [pdf]
A rotary-screw compressor is a type of , such as an , that uses a rotary-type positive-displacement mechanism. These compressors are common in industrial applications and replace more traditional where larger volumes of compressed gas are needed, e.g. for large refrigeration cycles such as , or for compressed air systems to operate air-driven tools such as and . For smaller rotor sizes th. [pdf]
A is first thought to have been used for rock drilling in 1844. Many quarries used hand held tools that required the driller to suspend himself from a rope over the quarry face in order to place the drill hole in the required position. This system used small diameter holes and was not only terribly inefficient, but very dangerous due to flying rock as a result of the inaccuracy of the drilled borehole. [pdf]
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