Coal used as raw material for industrial processing, such as for briquettes and coke. Generally speaking, this refers to coal used primarily as raw material for coke. It is a strong caking coal with strong caking properties and is used in steelmaking and casting. Coal for steelmaking must be low in ash, sulfur, and phosphorus. As there is little high-quality coal in Japan, the majority of the demand (65.38 million tons) is imported (64.56 million tons) (1990). Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
練炭用,コークス用など工業加工原料用の石炭。一般的には,主としてコークス原料としての石炭のこと。粘結性の強い強粘結炭で,製鉄用や鋳物用に使われる。製鉄用の原料炭は灰分や硫黄分,リン分の少いものでなければならない。日本では良質のものが少いので,需要 (6538万t) の大部分を輸入 (6456万t) している (1990) 。
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