Coal terms

Coal Terms
COVERED COAL:
Run-of-mine coal is raw coal that is naturally extracted from a coal mine and not processed at all.

CRIBLE COAL:
Krible coal is run-of-mine coal that has been subjected to sorting and sieving processes.

SCREENED COAL:
Sieved coal is coal that is sieved through sieves with certain holes and classified within certain size limits.

CLEANED COAL:
Cleaned coal is coal that has been cleaned with a wet or dry system.

WASHED COAL:
Washed coal is coal that has undergone a wet cleaning process.

TOTAL HUMIDITY (HUMIDITY):
It is the amount of moisture that can be disposed of under standard conditions in the coal taken as a sample.

BODY HUMIDITY (BODY HUMIDITY - Hygroscopic Humidity):
It is the moisture that a dry coal sample loses in air until it reaches a constant weight at 105 C in an oxygen-free environment.

FREE HUMIDITY (Surface Moisture - Rough Moisture):
The moisture that run-of-mine coal loses in the air until it turns into dry coal is called coarse moisture.

DRIED COAL HUMIDITY (MOISTURE) IN THE AIR:
It is the moisture in the coal sample that reaches an approximate equilibrium in the air it is exposed to.

TOTAL ASH:
It is the expression in% of the total weight of mineral substances left over from the full burning of a coal sample.

RELATIVE ASH:
They are mineral substances that cannot be removed from coal by physical means.

GAS:
It is the mass that coal loses during its heating and distillation in an airless (without oxygen) environment. It consists of the sum of volatile matter and Moisture.

VOLATILE MATERIAL:
It is the value found by subtracting the amount of moisture from the amount of gas in the coal.

FIXED CARBON:
In coal; It is the value found by subtracting the sum of Moisture, Ash and Volatile Matter from 100.

ELEMENTAL CARBON:
It is the value consisting of the sum of fixed (free) and bound carbon in the composition of coal.

PURE COAL:
It is the part used in coal and consists of the sum of volatile matter and fixed carbon.

ROOT :
It is the sum of the fixed amount of carbon and ash in coal.

COCK SENSITIVITY:
It is the expression of the shape and color of the remaining coal after gas determination.

TOTAL SULFUR:
It is the percentage of sulfur contained in all sulfur compounds (sulphate, organic, free, pyrite, chalcopyrite, etc.) in the coal sample.

Sulfur Remaining in Ash (Non-Flammable Sulfur):
It is the expression of sulfur remaining as sulphate compounds in the ash obtained as a result of the complete burning of the coal sample at maximum 850 ° C.

BURN SULFUR:
It is the expression of the sulfur present as a sulfur compound in the combustion gases as a result of the complete combustion of the coal sample at maximum 850 ° C.

UP (UPPER) HEAT VALUE (Calorie Value):
Kcal / Kg of the heat released as a result of the full burning of the coal sample in the calorimeter bomb. as expression.

LOWER (DOWN) HEAT VALUE (Calorie Value):
Kcal / Kg. as expression.

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