OXIDIZED BITUMEN

We manufacture the highest quality Oxidized Bitumen / Blown Asphalt in different types and grades and export them from Iran and the UAE to other countries around the world.

• Iran Oxidized Bitumen / Iran Blown Asphalt
• UAE Oxidized Bitumen / UAE Blown Asphalt

OXIDIZED BITUMEN USES

Oxidized Bitumen uses in high-temperature applications, the high softening temperatures of Blown Bitumen make it an ideal sealant for preventing leakage. Bitumen of the blown grade must be broken into tiny pieces (for the blown grade in molded cake shape) and heated gently to an application temperature of 220° to 230°C. Blown Asphalt is primarily used in the piling industry as an anti-slip compound for the production of undercarriage sealants in the automotive industry. In addition to being utilized in the production of roofing and sound-dampening felts, it is also used as a sealer and joint filler substance. Bitumen that has been oxidized is also used to make bituminous marine mastic, which is used to seal the joints between oil and gas pipelines.

Oxidized Bitumen applications:

• As a bitumen adhesive for roofing membrane sheets.
• As a hot-applied layer of waterproofing.
• Manufacturing of carpet tiles.
• As a raw ingredient for bituminous liquid coatings.
• Bituminous paint.
• For rust-resistant pipe coatings.
• Used in the piling industry as a slip-resistant layer compound.
• Used in the production of roofing and sound-dampening felts, as an under-carriage sealant in the automotive industry, electric cable joint protection, joint filling compound, sealant compound, and in a variety of other applications in our daily lives.

OXIDIZED BITUMEN ADVANTAGES

The fact that it is impervious to water, very flexible, and long-lasting are a few of primary oxidized bitumen advantages. Additionally, it is chemically rather stable. blown asphat is a highly malleable, chemically stable, very durable, and totally water-resistant substance. Finally, blown bitumen has a number of significant technological benefits that make it a highly sought-after product for a variety of applications.

Oxidized Bitumen Benefits:

• Include high production capacity and quality assurance, as well as weatherproof packaging that allows for more flexibility in terms of storage.
• Meets the requirements established by the ASTM for both the softening point and the penetration.
• The wrapping does not need to be removed in order for standard boilers to be able to melt it.

PROCESS OF PRODUCING BLOWN ASPHALT IN AN OXIDIZED BITUMEN PRODUCTION PLANT

In the bitumen oxidized production plant, the production process is as follows:

1. Heating the bitumen at a temperature between 230 and 270 degrees Celsius.
2. Moving the molten bitumen to the blowing towers.
3. Aerating the bitumen with air.
4. Bringing the molten bitumen down to temperature using water.
5. Packing.

OXIDIZED BITUMEN OXIDATION PROCESS

Continuous or staggered blowing processes are used to create Oxidized Bitumen, blown asphalt, and blown bitumen. Air is blown over heated penetration grade bitumen in a controlled setting to regulate the oil content of the bitumen as it oxidizes. The middle points of the softening point and penetration ranges for each grade made for a certain application are shown by two numbers.

The oxidation process is an outline of the steps:

1. A technique involving continuous blowing.
2. A method of blowing that is not continuous.

Catalysis and anti-catalysis are two more processes that are involved in the completion of these two operations. The act of introducing a chemical material throughout the process in order to minimize the amount of time needed for the blowing reaction is known as catalysis.

Because of the following advantages:

• Ease and simplicity in adjusting blowing conditions and, as a consequence, having output of varied grades
• Ease in creating the unit
• Simplicity in both the technology and the financial investment required.

The technique of creating in a discontinuous manner is selected.

The following is a rundown of the technical aspects and operational conditions:

It is recommended that the blowing be performed from the bottom of the blowing tanker. The reaction that takes place when bitumen and air mix produce heat. If the amount of heat generated by the combination is significant, the amount of heat generated by the reaction can be regulated by injecting water.

Both the amount of air that is mixed in and the total volume of air that is blown are crucial variables in the blowing process. In this situation, in order to make bitumen, either 90/15 or 85/25 distilled used oil or crude oil should be introduced into the product according to the amount 20-25%. If this is not done, the fragility of the bitumen will result in poorer output.

The rate of the manufacturing process reaction may be increased by increasing the heating temperature, the quantity of air injection, the length of time, and the tower pressure. The optimal temperature range for production operations is between 265-270 degrees Celsius, and this range should not be exceeded under any circumstances. This is because at higher temperatures, specifically 288 degrees Celsius, the intensity of the reaction becomes more severe and uncontrollable, which can cause an explosion in the tower. It is not beneficial to the system for bitumen to remain in the tower for an extended period of time under any circumstances; once it is ready, it should be transferred to a drum or an empty tanker.

If the liquid surface in the blowing tower is low, then only up to a certain limit should be introduced to the system. This is because any further air that is added will accumulate in the empty areas and very certainly cause ignite. And if the temperature is maintained at a high level, the internal heat of the tower will cause fats to climb, which will lead to an issue that causes an explosion inside the system.

The blowing tower has been filled up to 70 percent capacity. Air infusion takes place at temperatures ranging from 190 to 232 degrees Celsius. Sampling and testing of the characteristics of the bitumen are used to determine the ultimate point of blowing. In conclusion, in order to have the capacity to load and pack the goods, the temperature of the product should be maintained between 150 and 165 degrees Celsius.

OXIDIZED BITUMEN SPECIFICATIONS

Bitumen Oxidized Specification, often known as Blown Bitumen, is created by injecting hot air into the bitumen that has been penetrating. Because of this activity, the bitumen will be rubberier than its initial formulation, and it will also grow tougher. This bitumen recovers the weight that was lost during the heating process. Because of the low thermal sensitivity, the softening point is much higher than regular bitumen, and the penetration index (PI) is higher than road construction bitumen (8>PI>2). This is because the letter has a gel-like structure due to the accumulation of asphalt. The reason for this is that the softening point is much higher than regular bitumen. The building industry makes use of a wide variety of diverse applications that call for certain physical features that this grade has.

When penetration-grade bitumen is subjected to air-blowing, the resulting product is referred to as blown bitumen. This is carried out at high temperatures, which results in the production of a substance with a much greater penetration index. The primary component of blown bitumen is petroleum bitumen, which is produced by blowing bitumen 60/70 with extremely hot air. Blown bitumen is also known as blown asphalt. The label “blown bitumen” alludes to the point in the softening point acceptance criterion that is located precisely in the middle. In addition, the numbers correspond to the point in the material’s softening point and penetration that is precisely in the middle of their respective ranges. The value for the softening point that was established using the Ring and Ball technique according to ASTM D36. Additionally, the penetration value is 1/10 millimeter, as established by either IP49 or ASTM-D5.

OXIDIZED BITUMEN PROPERTIES

Oxidized Bitumen properties are:

• Reduced temperature susceptibility
• Exhibits a more ‘solid’ character at ambient temperatures
• A high index of penetration

THE MOST POPULAR OXIDIZED BITUMEN GRADES

The five grades of Oxidised Bitumen that are the most often used are Oxidised Bitumen 85/25, Oxidised Bitumen 150/5, Oxidised Bitumen 90/15, Oxidised Bitumen 95/25 and Oxidised Bitumen 115/15. The production of different grades of Oxidised Bitumen is also within our capabilities, and we are happy to fulfill the needs of our clients in this regard.

OXIDIZED BITUMEN PACKAGING

Oxidized Bitumen Packaging includes meltable polyamide bags, carton boxes, Kraft bags, and drums.

Petronaft Co. produces oxidized bitumen ( blown asphalt ) of the best quality in a variety of types and grades and exports it from Iran and the United Arab Emirates to other nations worldwide.

• Oxidized Bitumen Iran ( Blown Asphalt Iran )
• Oxidized Bitumen Emirates ( Blown Asphalt Emirates )

For more information, please click on each product listed below.