Iron slags

The seal must also resist the vibrations from the explosions of internal combustion in the engine, chassis and wheel vibrations, and even potholes in the road. This seal must resist strong chemicals (anti freeze, anti-rust agents, radiator stop-leak and sealant chemicals, gasoline and lubricant residuals), and also solid particles (rust, iron slag, minerals, asbestos fibers, and silica from the engine casting mold). In spite of all this, the mechanical seal on the water pump of your car can run 7, 10, even 15 years without problems. 

At blast furnace temperatures, calcium silicate is a liquid, called slag. Being less dense than iron, slag pools on the surface of the molten metal. Both products are drained periodically through openings in the bottom of the furnace. 

Iron slag Steel slag Nonferrous slag... 

Table 4.11 depicts the typical chemical composition of blast furnace iron slag. It is suggested that the chemical composition of blast furnace slags produced in North America has remained relatively consistent over the years. 

Air-cooled blast furnace iron slag, however, is more absorptive than conventional aggregate and therefore has a higher asphalt cement demand. It also has a lower compacted unit weight than conventional mineral aggregates, which results in a higher asphalt pavement yield (greater volume for... 

TABLE 38 Radiocarbon Dates of Ancient Iron and Iron Slags... 

Molten iron slag spilled onto wet sand to cause an explosion... 

FLUORINECOMPOUNDS,INORGANIC - HYDROGEN] (Vol 11) -iron slag m [IRON] (Vol 14)... 

V Steel, pig iron, cast iron, slags, furnace dust, slurry, isolates, oils... 

Ferrous orthosilicate, iron olivine or Fayalite, Fe2Si04, occurs as tabular rhombs in iron slags, of which it is one of the commonest constituents. Its name is derived from Fayal Island (Azores), where it was first found, although probably even that specimen was originally a lump of slag from a ship s ballast. Its crystal elements are —3... 

Recrement — of Copper Copper Slag of Silver Silver Slag of Iron Iron Slag of Lead Lead Slag. 

Commercially, however, it is obtained as a by-product of the manufacture of iron. Slag and fly ash are purified to remove the vanadium metal contained within them. Slag is a mixture of materials that separates from iron and floats on top of the molten metal. Fly ash is a powdery material produced during the purification of iron. 

Environmental and legislative considerations increasingly influence the disposal of products such as spent slag. For example, silicate slags are being widely substituted for soda-iron slags, as residual elements are permanently immobilized in the silicate structure, whereas they can be leached out of the soda iron slag. 

The soda-iron slag regime is based around the sulfide reaction series. There are very few applications in the metal recovery and smelting industry using a sulfide reaction. The only smelting operation of note is the reduetion of antimony sulfide by... 

To complete the process, sodium carbonate, which is added as the fluxing agent, combines with the iron sulflde to produce the soda-iron slag, as shown in reaction... 

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