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We describe a novel process for expanding perlite rocks, at temperatures from 1220 to 1370 K and elevated pressures, (3.3–16.0) × 10 5 Pa, in flowing water vapor.
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Thermal conductivity of evacuated perlite is many times lower than that of nonevacuated perlite insulation. For example, at a mean temperature of -115°F (-82°C), normal unevacuated …
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tion of perlite expansion see info-sheet: Why Perlite Works. Description Perlite Concrete can be sub-divided into two categories: 1. Perlite Ultra-lightweight Concrete (densities less than 50 …
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PMC Company believes that the art and technology behind the expansion of perlite and grinding of minerals have evolved and will continue to evolve with respect to sectoral diversification, …
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perlite: minÉral et processus d’expansion L’ extraction de la perlite minérale se réalise dans des mines à ciel ouvert situées dans des zones volcaniques de plusieurs régions du monde. Le …
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Silbrico Perlite expanding systems are accepted as the standard by most major perlite producers in the world. We’ve been producing these systems in our facility since 1964 and are constantly …
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Process of Perlite Expansion A unique feature of perlite compared to other volcanic glasses, is expansion by heating suddenly up to appropriate temperature and increasing in mass by 4_20 …
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Perlite is an amorphous (with no defined crystalline form) volcanic glass Expansion occurs when the glassy lava rock is heated to 1600 degrees F (871 degrees C) and the water …
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117· Perlite is a naturally occurring volcanic glass that has been used in various industrial and horticultural applications. It is a unique mineral formed when obsidian, a type of …
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typical Perlite sample is composed of 71 to 75 percent silicon dioxide, 12.5 to 18.0 percent alumina, 4 to 5 percent potassium oxide, 1 to 4 percent sodium and calcium oxides, and trace …
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