soft coal

Thân thiện

A miner holds a piece of soft coal in his gloved hand.

Definition

Noun: * A type of bituminous coal: A sedimentary rock that is rich in tarry hydrocarbons (bitumen). It burns readily and produces a smoky, yellow flame due to its higher volatile content compared to anthracite.

Usage

Soft coal is a technical and industrial term used primarily in geology, mining, and energy sectors to classify and describe a specific grade of coal based on its properties and combustion characteristics.

Examples

• "The power plant was designed to burn soft coal, which was abundant in the region."
• "Historically, soft coal was favored for industrial use because it ignites more easily than harder coals."
• "The miner explained the difference between soft coal and the harder, cleaner-burning anthracite."

Advanced Usage

• The term is often used in contrast to (anthracite). The "soft" refers to its relative hardness and its tendency to break or crumble more easily.
• In environmental contexts, burning is often discussed due to its higher emissions of smoke and particulate matter.

Variants and Related Words

• Bituminous coal: This is the more precise, scientific synonym for .
• Steam coal: A specific type of bituminous coal historically used to power steam engines and boilers.
• Coking coal: A specific type of bituminous coal with properties suitable for conversion into coke for steelmaking.

Synonyms

• Bituminous coal

Antonyms

• Hard coal
• Anthracite

Học thuật

Noun

1. rich in tarry hydrocarbons; burns readily with a smoky yellow flame

Từ đồng nghĩa

• bituminous coal