|
| Tachometer (AC) (DC) |
| |
A device which generates an AC or DC signal proportional to the speed at which it is rotated and the polarity of which is dependent on the direction of rotation of the rotor.
|
|
| Taconite |
| |
A highly abrasive iron ore.
|
|
| Tail section |
| |
The area of a conveyor at the extreme opposite end from the discharge point. Most often this is the location of the take up device for adjusting belt or chain tension.
|
|
| Tailings |
| |
Material rejected from a mill after most of the recoverable valuable minerals have been extracted. Normally consists of ground up rock in the sand to silt size range.
|
|
| Tailings pond |
| |
A pond to confine tailings. It allows enough time for heavy metals to settle out or for cyanide to be destroyed before water is discharged into the environment.
|
|
| Tamping |
| |
The act of packing a substance in behind an explosive to make it air tight and therefore work more efficiently.
|
|
| Temposonics |
| |
Linear displacement transducer.
|
|
| Tenor |
| |
The relative value or mineral content of an ore.
|
|
| Thermocouple (TC) |
| |
A sensor that measures temperature based on the voltage difference between two dissimilar metals.
|
|
| Thermosetting glues and resins |
| |
Glues and resins that are cured with heat but do not soften when subsequently subjected to high temperatures.
|
|
| Thickener |
| |
A large, round tank used to separate solids from liquids. Fluid overflows from the tank and rock particles sink to the bottom.
|
|
| Ton (T) |
| |
1. US unit of weight equal to 2,000 lb; also called a Short ton.
2. British unit of weight equal to 2,240 lb (1,016 kg); also called a Long ton.
|
|
| Tonne |
| |
A unit of weight in the metric system equal to 1,000 kilograms or approximately 2,204 pounds. Also called a Metric ton.
|
|
| Tonnes-per-vertical-metre |
| |
Common unit used to describe the amount of ore in a deposit.
|
|
| Torque |
| |
A rotary thrust. The turning effort of a fluid motor usually expressed in inch pounds.
|
|
| Torque converter |
| |
A rotary fluid coupling that is capable of multiplying torque.
|
|
| Torque motor |
| |
A type of electromechanical transducer having rotary motion used in the input stages of servo valves.
|
|
| Tramp |
| |
Foreign uncrushable metal often found in rock crushing input.
|
|
| Transducer (or feedback transducer) |
| |
An element which measures the results at the load and sends a signal back to the amplifier.
|
|
| Transfer point |
| |
Location in the materials handling system, either haulage or hoisting, where bulk material is transferred between conveyances.
|
|
| Traps |
| |
A device that separates condensate and air from the steam within the steam heating coils.
|
|
| Traps, float and thermostatic |
| |
Traps that discharge condensate at a rate dependent on the position of an internal float. Air is removed through a thermostatic air vent.
|
|
| Traps, inverted bucket |
| |
Mechanical traps that operate on the difference in the density between steam and water.
|
|
| Traps, thermostatic |
| |
Traps that use an internal bellows, which expands when steam flows to the trap, closing the orifice. As condensate accumulates the bellows contracts to release it.
|
|
| Trommel |
| |
A screen contained within a tumbling mill which acts like a sieve during ore processing.
|
|
| Troy ounce |
| |
Unit of weight measurement used for all precious metals.
|
|
| Tube mill |
| |
Large rotating cylinder filled with metal balls that is used to break ore into smaller pieces. Similar to a ball mill but has a longer length compared to its diameter.
|
|
| Tunnel-boring-machine |
| |
A machine used to excavate a tunnel through soil or rock by mechanical means as opposed to drilling and blasting.
|
|
| Turbine |
| |
A rotary device that is actuated by the impact of a moving fluid against blades or vanes.
|
|
| Turbulent flow (turbulence) |
| |
A condition where the fluid particles move in random paths rather than in continuous parallel paths.
|
|
| Two-way valve |
| |
A directional control valve with two flow paths.
|
