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[Chemical Knowledge]：The production and manufacturing method and process of coated asphalt.

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The manufacturing method
of coated asphalt
1. Introduction

coated asphalt is an important chemical production raw material, widely used in waterproof, anti-corrosion, road construction and other fields. This paper will introduce a manufacturing method of coated asphalt, which has the advantages of high production efficiency and stable product quality.

2. raw materials and equipment

1. raw materials: petroleum asphalt, modifiers (such as rubber, plastics, etc.), stabilizers, etc.
2. Equipment: high-speed mixer, extruder, cooling equipment, packaging machine, etc.

3. Manufacturing Steps

1. Ingredients: According to the predetermined formula ratio, the petroleum asphalt, modifier, stabilizer and other raw materials are added to the high-speed mixer.
2. Mixing: Start the high-speed mixer to fully stir and mix the raw materials to ensure that the ingredients are evenly dispersed.
3. Extrusion: The mixed material is fed into the extruder, and the material is heated, plasticized, homogenized, and coated with asphalt through the action between the screw and the barrel of the extruder.
4. Cooling: The extruded coated asphalt undergoes cooling equipment to rapidly cool down and solidify.
5. Packaging: The cooled coated asphalt is packaged according to a certain weight and put into storage for sale.

4. precautions

1. Strictly control the proportion of each raw material to ensure product quality.
2. During the mixing and extrusion process, it is necessary to keep the temperature and pressure in the equipment stable to avoid product quality fluctuations.
3. During the cooling process, ensure that the temperature and flow of the cooling water are stable so as not to affect the performance of the product.
4. When packaging to ensure accurate product weight, while avoiding packaging damage and pollution.

5. product quality standards The coated asphalt manufactured by

should meet the following quality standards:

1. Appearance: black, smooth surface, no impurities.
2. Ductility: in accordance with relevant standards.
3. Softening point: in accordance with relevant standards.
4. Penetration: Comply with relevant standards.

6. environmental protection and safety measures

1. In the production process, environmental protection laws and regulations should be strictly observed, and the waste gas, waste water, waste residue and other effective treatment should be carried out to avoid environmental pollution.
2. Operators should be professionally trained and familiar with the equipment operation procedures and safety operation procedures to ensure the safe and smooth production process.
3. Safety warning signs shall be set up on the production site, and corresponding fire-fighting equipment and first-aid drugs shall be provided to deal with emergencies.

7. conclusion

The coated asphalt manufacturing method introduced in this paper has the advantages of high production efficiency and stable product quality, which can meet the needs of coated asphalt in different fields. In the actual production process, the process parameters should be strictly controlled to ensure product quality and safety. At the same time, strengthen environmental management and reduce the impact of production on the environment.

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