Crane Classifications Mazzella Companies. At Mazzella Companies, we provide ideal lifting solutions, offering all styles of,scrap yards, cement mills, lumber mills, fertilizer plants, container handling, etc.Used coal fired power plant second hand power plants,Coal energy it is also easy to burn, coal energy is a renewable form of energy. Coal is used to build power stations. Used Power Plant for Sale,Power Plant GAS, COAL, HFO, BIOMASS, Gas Engine, Steam Turbine, Gas Turbine, Steam Boiler, Oil Refinery for SaleCoil Pulverizers for Boilers brighthubengineering,In the pressurized type, the hot primary air is used for drying the coal and to transport the milled coal to the furnace. In this type, leakage in the mill area is high. In the suction type, the exhauster is used for lifting the milled coal from the pulverizer to the furnace through a cyclone.