What is Gilsonite (natural bitumen)?
The oil bitumen remains the last stage of distillation of crude oil in the refinery, there is another type of bitumen that is the result of the natural distillation of crude oil over the years, which is more durable than oil bitumen, to which we refer to Gilsonite or natural bitumen.
Gilsonite, also known as uintahite, asphaltum or asphaltite.
This material, which is mainly carbon, is found abundantly in Iranian oil fields and is extracted from the mines found in these areas. natural bitumen is dark brown and very fragile, which is why it is often consumed in powder form. The natural bitumen bond with bitumen oil produces a material that has Gilsonite durability and bitumen flexibility.
Gilsonite has a significant impact on bitumen refining, and subsequently improves the structure of asphalt mixtures.In particular, it improves the softening point, increases the viscosity and decreases the degree of penetration of the mixture. Adding this powder to pure bitumen also improves its thermal sensitivity.
Gilsonite has high levels of nitrogen compounds, which makes it highly adhesive and also has sulfur compounds, which increases the strength of the asphalt. The highest amount of observation of this substance in Iran is in Kermanshah province and is more scattered in Lorestan, Ilam and Khuzestan provinces.
From natural bitumen, more than 160 applications of importance in various industries, oil well, paint and ink, asphalt, pavement, casting, chemicals, drilling mud, cement, rubber and…
Gilsonite-bitumen binder
Before adding Gilsonite, the bitumen is hot and added to the reservoir in turn, then Gilsonite is slowly added to the bitumen, the minimum temperature to do 170 to 175 ° C, if the temperature is less than this, Stirring time increases. It takes 2-4 hours to mix 5 to 10 percent Gilsonite with bitumen. If more Gilsonite is needed, more time is required for the mixture. If Gilsonite does not mix slowly, then there is a bullet phenomenon (BALL UP) that will fix this problem by adding specific compounds. Finally, to make sure the product is desirable, it compares its degree of penetration with the initial bitumen.
Gilsonite is available both in lumps and Gilsonite powder form.
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Gilsonite purity (Ash)
Gilsonite with ash content under 5, 10,15,20,25...
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Gilsonite powder
Gilsonite powder is readily soluble without heating in aromatic solvents and in most chlorinated solvents.
It is also soluble without heating in aliphatic and low aromatic solvents , but mixing time is longer.
Gilsonite powder have a dark color with little bronzing effect.
Gilsonite Powder Mesh Size are 30-40,100,200 or 325 customize.
it is compatible with drying oils, vegetable oils, rosins, hydrocarbon resins, elastomers, asphalts, and waxes for many applications.
