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Expanded Perlite

Expanded Perlite
Expanded Perlite
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Product Code : 01
Price And Quantity
  • Minimum Order Quantity
  • 200 Kilograms
  • Price Range
  • 25.00 - 35.00 INR
Product Specifications
  • Shape
  • Granule
Product Description

Expanded Perlite

Perlite is a type of volcanic siliceous rock, containing 2-5% combined or occuled water. When crushed up and heated under proper conditions it  "pops" like popcorn, expanding to 20 or more times its original volume. It is these tiny glass sealed bubbles which account for light weight and excellent thermal insulation properties.

The expansion process also creates one of perlite's most distinguishing characteristics : It's white colour.

Introduction

Expanded perlite is an economical insulation for high and low temperature and cryogenic applications. it is widely used because of its low thermal conductivity, cost, non-combustibility and low moisture retention.

Perlite loose fill insulation provides dependable results at temperatures ranging from -273 c to 1000. It is widely used to insulate

  • Cold box or air separation units.
  • Storage tanks containing ethylene & propylene.
  • Liquefied natural gas (lng) in storage vessels and ships.
  • Vessels storing anhydrous ammonia, propane, lpg and chlorine.
  • Cryogenic storage vessels containing liquid oxygen & nitrogen.

Low temperature and cryogenic insulation

Increased production of liquefied gases having boiling points as low as -270 c has created a demand for storage facilities capable of economically reducing evaporation losses. While the storage vary as to configuration, type of supports and accessory equipment's, the majority of vessels are of double walled construction and the annulus is filled with expanded perlite.

Atmospheric services: The thermal conductivity of expanded perlite insulation under atmospheric pressure conditions is directly related to the density, while perlite grading has only a minor effect on thermal conductivity. expanded perlite will break down if subjected to excessive handling, and this crushing of particles will result in increase in density and a higher thermal conductivity.

Evacuated services: Expanded perlite is essentially non-hygroscopic in nature, which makes it suitable for use under vacuum conditions. Here the thermal conductivity phenomenon is the reverse i.e. Higher the density lower is the thermal conductivity under vacuum conditions at low pressures.

Physical Properties

Physical state

Free flowing

Colour

White

Thermal conductivity

0.03 - 0.05 w/mk . Depends on density

Loose density

40 - 50 kg. / Cu.m

Compact density

55 - 70 kg. / cu.m

Moisture

Maximum 0.5 %

Fire resistance

Perlite is non-combustible

Organic matter

Maximum 0.1 %

Grading

Retained on 1.180 mm 10 % max. (ASTM 16 mesh sieve) retained on 0.150 mm 80 % min. (ASTM 100 mesh sieve)

Biological

Rot proof and vermin proof

Chemical Properties

Silicon dioxide %

70.0 to 76.0

Aluminium oxide %

10.0 to 14.0

Ferric oxide % (max)

0.4

Ferrous oxide % (max)

0.5

Calcium oxide %

0.5

Magnesium oxide %

0.2

Sodium oxide %

3.0 to 4.0

Potassium oxide %

4.0 to 5.0

Organic matter %

Nil

Ph of 10% slurry in water

6.5 to 8.0

Trade Information
  • Supply Ability
  • 10000 Kilograms Per Day
  • Delivery Time
  • 5 Days

Santosh Chemical Co.
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