Perlite Minerals

Clearflow Products

We are manufacturers, exporters and suppliers of a wide range of filter aid products, perlite filter aid and filter aid manufacturer. These filter aid products use perlite as the filtering agent. Our perlite-based filter aids are uniform, low density filter aids for economical liquid and/or solid separation.

Perlite is a generic name for naturally occurring siliceous or volcanic rock readily available throughout the world. A unique property of perlite is that it expands up to 20 times its original volume when it is heated to its softening range. This expansion process is caused by the presence of water in the crude rock. When perlite ore is rapidly heated to above 8500°C (16000°F), this water vaporizes and causes the softened rock to expand. Tiny glass-like bubbles are produced which account for the lightweight, pure whiteness and exceptional physical properties of expanded perlite.

It is these light weight glass - like bubbles that are milled and classified under stringent quality control conditions to produce perlite filter aids. This material exhibits a unique, jagged, interlocking structure with myriads of microscopic channels affording optimum flow rates and clarities for a wide variety of applications. Perlite filter aids do not impart taste, colour or odour to liquids being filtered and they are virtually insoluble in mineral and organic acids at all temperatures. However, their solubility in strong alkalies varies depending on temperature and contact time.

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. We are expanded perlite suppliers and expanded perlite manufacturers.

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.

We are offering to our clients, Perlite Ore, perlite ore supplier and perlite ore manufacturer which is used in sectors like construction, horticulture along with other industrial applications. The heat resistance property of this dark grey granular material makes it ideal for manufacturing refractory bricks, mortars, and pipe insulation.