- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
An additive to the charge in a ball mill or rod mill to accelerate the grinding process; the additive has surface-active or lubricating properties. Grinding aids find particular use in the grinding of portland cement clinker but, in the United Kingdom, their use is precluded by the conditions laid down in British Standard 12.
Industry:Mining
An adequate amount of ventilation to dilute and render harmless all noxious and flammable gases to such an extent that all roads and workings in a mine shall be kept in a fit state for working or passing therein.
Industry:Mining
An adjustable arm projecting from a drill carriage to carry a drill and hold it in position.
Industry:Mining
An adjustable door installed in permanent air stoppings or in an airway without a stopping to control ventilating current.
Industry:Mining
An adjustable plate situated between the feed end and the discharge end of a washbox and serving to regulate the forward movement of material through the box.
Industry:Mining
An adjustable plate that controls the quantity of feed entrapped by the rolls of a doubleroll press.
Industry:Mining
An adjustable steel prop that incorporates a sliding or flexible joint that comes into operation when roof pressure exceeds a set load or value.
Industry:Mining
An adjustment, such as leveling or focusing, made to a surveying instrument at each setup.
Industry:Mining
