Related by context. Frequent words. (Click for all words.) 57 coal 56 PRB coal 54 bituminous coal 54 steam boilers 52 gasifiers 52 sub bituminous coal 51 Metallurgical coal 50 lignite coal 50 nonferrous scrap 50 circulating fluidized bed 49 metallurgical coal 49 ferromanganese 49 gasifying 49 electrical steels 48 thermal coal 48 electric arc furnaces 48 Soda ash 48 IGCC plants 48 cathode copper 48 cement kiln 48 petcoke 48 gasified 48 reciprocating engines 48 flyash 48 frac sand 47 Coal gasification 47 gaseous fuels 47 steam boiler 47 pulverized coal 47 reduce NOx emissions 47 Bentonite 47 sulfur dioxide emission 47 polyethylene pipe 47 Coking coal 47 oxyfuel 47 sulfur coal 47 evaporators 47 furnaces 46 arc furnaces 46 Caustic soda 46 boilers 46 elemental sulfur 46 petroleum coke 46 natural gas 46 smog forming 46 fluidized bed 46 ferrovanadium 45 mercury emitted 45 #.#mtpa 45 ferro alloy 45 SO2 emissions 45 uranium vanadium 45 Butadiene 45 electric arc furnace 45 debottleneck 44 pelletizing 44 steel coil 44 nickel alloys 44 steam turbines 44 reclaimer 44 oxy fuel 44 gasifier 44 flue gas 44 Western Bituminous 44 desulphurisation 44 steam generator 44 coking 44 steelmaking coal 44 baghouse 44 gasification 44 coal gasification 44 steam cracker 44 nitrogen oxide NOx emissions 44 metallurgical coke 44 reverse osmosis membranes 44 ferrous metal 44 Powerspan 44 pentane 44 Coal seam 44 lignite 44 sulfur dioxides 44 steam generators 44 Kuan Yin Taiwan 44 oxy combustion 44 Burning fossil fuels 44 adipic acid 43 Liquefied petroleum gas 43 #.#mt y [001] 43 briquette 43 gasify 43 Edge Moor 43 steam turbine generator 43 electrostatic precipitators 43 zinc smelting 43 coke ovens 43 microturbines 43 carbon steels 43 beneficiation plant 43 coking coal 43 methane CH4 43 Steelmaking