Refining method and refining apparatus for chromium-contained molten steel

Heat exchanger for rotary kilns

Device and process for heating a primary material

Method for pre-heating, transforming and melting a metal charge and relative plant

Cooling exhaust gases from smelting furnace

Method and apparatus for melting metal

Fluid-cooled duct

Process for burning lumps of material with lean gas

Vacuum muffle quench furnace

Method and burner apparatus for injecting a pulverized coal into rotary kilns, method and apparatus for producing cao using them

Continuous steelmaking plant

Online bakeout of regenerative oxidizers

Process and apparatus for the direct reduction of iron oxides in an electrothermal fluidized bed and resultant product

Thermoelectric energy conversion unit and tunnel-type furnace therewith

High-temperature flue gas recovery apparatus for melting furnace

System and method for green integrated electric power plant

Thermochemical regeneration with fuel additions