iran bitumen price, 60/70, Natural Bitumen (Gilsonite)

This type of bitumen is a naturally occurring hydrocarbon that was first found in the Bonita River in northeastern Utah, which is hardened crude oil known as asphalt and euthanasia. This type can be soluble in aliphatic and aromatic solvents and is also used as a diluent for dilute petroleum derivatives due to its high compatibility. It is in the form of a shiny, black and crispy clump and is brown in the form of micronized powder. Natural type is found in the vertical layers of the earth’s surface and can now be mined using excavators and other up-to-date tools. In the United States, natural bitumen is called Gilsonite, which is produced by the American company Gilsonite with different grades. The name is so well known that some people mistakenly call natural bitumen Gilsonite. One of the features of this type of bitumen is its low ash content, which has nothing to do with the mine, and in the United States, due to the high production technology, it is possible to process this product completely.

Natural Bitumen (Gilsonite)

This type is referred to as solid bitumen, also known as asphaltite, and is distinguished from other types by its unique properties. This type of material is a type of natural hydrocarbon resin and is known as the best natural insulation. It has a shiny, black clump and has a high solubility in organic solutions, high purity, high molecular weight, constant properties and high nitrogen. This type has a degree of softness between 130 and 250 degrees Celsius and is used for many purposes, including asphalt and road construction. Natural bitumen in Iran can be found in Moghan valley and Poshtkuh of Ilam bitumen castle.During its natural formation, after the evaporation of crude oil, due to factors such as temperature, time and processes such as reaction with sulfur, oxidation, polymerization, the condensation of this material, it will form in liquid and solid shape. These types are semi-solid in liquid form and crispy lumps in solid state. Natural type is classified as lake and rock bitumen as follow:

– Lake bitumen:

When crude oil rises to the ground’s broken bases and the material in it evaporates, it is covered as a lake on the ground. This species is found in various parts of the world, including Venezuela’s Trinidad Bitumen Lake with an area of ​​10 to 15 million cubic meters, as well as Venezuela’s Lake Bermuda. To use this type , it is heated to a temperature of 160 degrees Celsius and after evaporation of the water in it, it is passed through a sieve and the impurities in it are separated. Due to the fact that this type has a penetration rate of 2 cm and a softness of 95 °C, it has a lot of hardness that cannot be used. Therefore, it is mixed on ratio of 1:1 with bitumen with a penetration rate of 200 and a bitumen with a penetration rate of 50, which can be easily used in the asphalt mixture in road construction. This type has good quality in different climatic conditions, also the asphalt prepared by this method has a longer lifespan.

– Rock bitumen:

Rock type generally consists of two groups of limestone and sandstone, in which crude oil penetrates in it and over time, volatile substances evaporate and the rest is formed naturally. In this type, during use, first it is crushed, soft and heated and spread on the road surface, and the amount of it in this type of rock varies by 7 to 80%. Lorestan’s rock bitumen in Iran contains between 70 and 80 percent which is known in the United States as Gilsonite. Today, in addition to road construction, this type is also used in various other uses.