Foundry Grade
Foundry Grade
TurkPerlite slag coagulant material is manually added to the surface of molten metal, after it is poured into a ladle. Slag that is present on the molten metal adheres to the perlite and floats for removal. With the removal of the combined perlite and slag, the metal is clean and ready for casting.
In ladle topping applications, unexpanded granular ore form of perlite is added to molten metal pouring ladles. Most often the ore form is used which reacts with slag in the ladle to allow easy removal of the slag layer. In cases where it is desirable to maintain a metal temperature in a ladle, the unexpanded perlite layer forms an efficient insulating blanket. When perlite is introduced during ladle filling, a gentle rolling motion is produced which cleanses the metal by coagulating impurities. In addition, ladle lining life is increased by virtue of a vitreous residual coating left on the refractory by the perlite. An added advantage of perlite in this application is that no objectionable smoke or noxious fumes are produced.
Perlite is added to foundry core and molding sand mixtures as a cushioning agent to compensate for the expansion of crystalline silica as it goes through phase changes at temperatures in excess of 1000F (540C). Casting defects such as buckles, veining, fissuring and penetration are minimized and cleaning room costs are reduced. In addition, perlite improves permeability of core sands thus reducing defects attributable to poor venting.
Key Benefits of Product
TurkPerlite foundry grade perlite prevents abnormal surface tensions as it provides the metal to cool slowly and evenly. It does not burn during casting, does not release gas and does not react with metal. It allows the gases formed during casting to exit through the cavities and channels within it. Clean, solid, high quality and efficient casting is obtained. As it minimizes casting errors, it reduces the cleaning time and labor.
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With our "TurkPerlite" brand, we export perlite products to be used in casting, molding, foundry industry, agriculture, horticulture, textile, construction, heat and sound insulation, ceramic and glass industry, filtration, cooling, medicine, fertilizer and many other sectors.
Have you heard that perlite is used in the production of banknotes?
Our product may have been used on one of the banknotes in your wallet.
