# What is specific gravity of coal?

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## On what factors does the specific gravity of coal depends?

The chief factors which affect the specific gravity of coal, aside from difference in type, are (a) the amount of impurities, and (b) the amount of moisture present in the coal. A high-ash coal has a greater Page 10 ILLINOIS ENGINEERING EXPERIMENT STATION specific gravity than a low-ash coal of the same type.

## How do you calculate coal tonnage?

Thus the formula used for resource calculation is: short tons = acres x coal thickness x coal rank or density conversion factor (for example, 1,750 for lignite, 1,770 for subbituminous, 1,800 for bituminous, and 2,000 for semianthracite and anthracite) (Wood and others, 1983).

## What is the weight of coal?

Weights vary from 47 to 55 pounds per cubic foot. Cubic Feet Per Ton of Coal (Based upon above table).

## What are 4 types of coal?

Coal is classified into four main types, or ranks: anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

## Is Coke a carbon?

By distilling bituminous coal in retorts to obtain gas for illumination, or by burning it in kilns or pits, the residue left behind is called coke, which is simply coal charcoal, and is nearly pure carbon.

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## What is the specific gravity of rock?

What is specific gravity of rocks? It is the density of a substance relative to water. For example, magnetite has a specific gravity of 5.2. This means the weight of magnetite is 5.2 times that of an equal volume of water.

## What is a short ton of coal?

• 1 short ton (2,000 pounds) of coal = 19,882,000 Btu.

## How many MMbtu is a ton of coal?

There are 2000 lb in a short ton so that makes (12000 * 2000) = 24 MMbtu of energy in a short ton of NYMEX coal.

## How much is an acre of coal worth?

Under the best conditions an acre of coal 1 foot thick will yield, at a royalty rate of 10 cents a ton, \$150 gross; under the worst conditions it will yield \$100.

## How heavy is a bucket of coal?

The two main variables why this cannot be calculated precisely based on it’s weight is the density of the coal and the size of the coal.

The Volume of Anthracite Coal by Weight.

Container Size Cubic Feet Weight to Fill the Space
5 Gallon Bucket 0.668 33.4 Pounds
55 Gallon Drum 7.34 367.4 Pounds
4′ * 8′ * 3′ Coal Bin 96 2.4 Short Tons (4800 Pounds)