
74 Conversion of Large Scale Wastes into Value-added Products
particularly true for low rank coals, where the high moisture content (i.e., low energy
content) precludes export over long distances. The only countries listed in Table3.6
that are not major coal producers are Israel and Morocco, both of which import hard
coal to meet their electrical generation needs.
3.2 PULVERIZED COAL COMBUSTION BY-PRODUCTS
The most common technology used to generate electricity from coal is pulverized
coal combustion. During this process, solid by-products are produced as coal is
combusted and any ash contained in the feed coal remains, where it is collect