hard coal artinya

• antrasit

• hard:    kaku; keras; pejal; sulit; bengis; ganas; tajam;
• coal:    arang batu; batubara; kayu arang; batu bara;
• coal:    arang batu; batubara; kayu arang; batu bara; membara; bara api; bara; batu arang; arang; menghanguskan; batu karbit; hangus

Contoh

1. It also operates in the field of transport, processing and distribution of hard coal, coke and byproducts from coal processing, as well as in the field of gas supply, transport and trading.
   Ia juga beroperasi di bidang transportasi, pengolahan dan distribusi batubara keras, coke dan produk sampingan dari pengolahan batu bara keras, serta di bidang pasokan gas, transportasi dan perdagangan.
2. The following is an understanding of Anthracite used in water filter media. Anthracite is called hard coal which has a semi-metallic black color and is slightly brownish. Because anthracite has a high carbon content. Antrasite in water filter media is often used simultaneously with silica sand or zeolite sand.
   Antrasit disebut dengan batubara keras yang memiliki warna hitam semi metalik dan agak kecoklatan. Karena antrasit memiliki kandungan akan Karbon Aktif yang tinggi. Antrasitalam media filter air sering digunakan secara bersamaan dengan pasir silika atau pasir zeolit.