D. K Industries

Hiran Magri, Udaipur, Rajasthan

Being one of the major Manufacturers and Exporters in Udaipur, the company offers the finest grade Sillimanite Powder. Sillimanite is one of the three allotropic varieties of mineral corresponding to the formula Al₂O₃. SiO₂. The other two are anadalusite and kyanite. They all contain 63.2% Al₂O₃ and 36.8% SiO₂. They are distinguished from one another by their modes of occurrence and physical and optical properties.

Industrial Applications :

Appreciable quantity of Sillimanite Powder mixed with high-grade china-clay is used in the manufacture of spark plugs and other insulating materials required at high voltages. Further, the Sillimanite Powder also find its usage in industries like cement, ceramics, glass-making, metal smelting, refinery and treatment, tar distillation, coal carbonization, chemicals manufacture, and iron foundries. Resistant to glass slag, the Sillimanite Powder provided by us is used as lining material in glass melting furnace.

Availability : 50 kg and 25 kg bags

Physical Characteristics :

• Color is white, brown and green.
• Luster is silky when fibrous or vitreous otherwise.
• Transparency crystals are transparent to translucent.
• Crystal System is Orthorhombic; 2 / m2 / m2 / m
• Crystal Habits include rare prismatic crystals but mostly fibrous masses.
• Cleavage is good in one direction lengthwise.
• Fracture is splintery.
• Hardness is 7.5 in large crystals but more fibrous forms are softer.
• Specific Gravity is approximately 3.2+ (above average)
• Streak is white.
• Associated Minerals are garnets, biotite, feldspars, quartz, kyanite and andalusite.
• Other Characteristics : fibers are brittle distinguishing them from asbestos minerals.
• Notable Occurrences include Brazil, New England area and many European sites.
• Best Field Indicators are crystal habit, color, brittleness and hardness if not fibrous.