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Slag from pig iron, steel and cast iron production belong to metallurgical slag. A blast furnace slag is from pig iron production, slag from electric arc furnace and electric induction furnace are from steel production and stag from cupola furnace proceeds from cast iron production. There are given basic information about chemical composition and physical properties of slag in this contribution (melting temperature). As another properties basicity, content of free lime and structure of slag will be determined. Che...

Castings production cover different technologies of mouls and cores production, different technologies of metal melting (depended on casting material) and technologies of pouring. All these technologies have got some advantages, disadvantages and generate some kinds of by products.There are described in the contribution the basic technologies of moulds production (sand casting, shell moulding, investment casting, lost foam casting, shaw process, vacuum process), pouring technologies (gravity casting, die casting,s...

Fly dusts creates by steel and cast iron melting. Their properties depends on a type of melting aggregate. For steel it is first of all a fly dust from electric arc furnace, its chemical composition is depended on the kind of produced steel. A cupola furnace is the most used furnace for cast iron production. Fly dusts from steel and cast iron production contain some part of FeO that is reducible in a cupola and blast furnace. It is a very fine material and it has to be pelletized or briquetted before its next use....

Foundries produce metal castings from ferrous or non-ferrous alloys and they operate in various locations around the world. A typical foundry workplace is composed of furnace area, pouring area, core making area, shaking out area and fettling area. The manufacturing process involves the melting of metal into a liquid, the pouring of molten metal into a cast, the removing of casting and the cleaning / finishing of the cast piece. Dusts arise almost in every of these steps of foundry processes. Solid waste streams f...

Returnable and non-returnable losses rise during melting and casting of molten metal. Non – returnable losses arise by melting and metallurgical treatment of molten metal as a back wash of evaporation, chemical reactions between molten metal and refractory lining, molten metal and air and between molten metal and refining additions. Value of these losses depends on the kind of alloy, on used furnace and charge quality. Except non-returnable losses, the returnable losses creates by melting. They represent a diffe...