What is the pressure of compressed air in the metallurgical industry?

The pressure setting of compressed air in the metallurgical industry varies with specific application scenarios and equipment requirements. The following are some common metallurgical industry compressed air pressure setting range and its application scenarios:

steel industry

• universal demand:

  • the amount of compressed air in the steel industry is very large, and the use of more occasions. The commonly used compressed air pressure is usually about 0.7MPa.

• Specific application scenarios:

  • sintering workshop: For power actuators (such as the cooperative actuators of ash unloading devices, etc.), the pressure of compressed air is generally 0.5MPa, and the quality requirements are not high.
  • smelting blast furnace the pressure of compressed air required by the actuator of the equipment (such as pneumatic cylinder, opening of blast furnace door, etc.) is generally 0.5MPa, but the demand for air volume is large. For the coal ash injected into the blast furnace for combustion, the pressure of compressed air is generally 1.2MPa, and the exhaust pressure of the compressor is at least 1.3MPa or above. Blast furnace blast equipment generally use high-pressure fan, usually the pressure is 0.2MPa.
  • Instrument gas the pressure is generally 0.6~0.7MPa, and the quality grade of compressed air is in accordance with ISO/DP8573/1-88 standard, which is usually defined as solid particle level 2, water content level 3 or 4, and oil content level 2.

non-ferrous metal smelting industry

• universal demand:

  • the pressure of compressed air is generally 0.6~0.7MPa.

• Specific application scenarios:

  • blank production stage: For example, the opening of the smelting furnace door, the lifting, lifting and casting of the ladle containing liquid non-ferrous metals, the pressure requirement of compressed air is generally 0.6~0.7MPa, and the quality standard is not high.
  • Finishing stage for the loading and unloading of tools, fixtures, tools and other actions of numerical control machine tools and machining centers, the pressure requirement of compressed air is also 0.6~0.7MPa, and the air consumption is relatively small (about 0.5m & sup3;/min), the requirement for compressed air quality is not high, especially the requirement for oil content is not high, and the requirement for water is that the pressure dew point is 10 ℃. The quality level of the compressed air used in these equipment is generally defined as solid particle level 2, water content level 6, oil content level 3.
  • Appearance spraying stage the pressure of compressed air is usually 0.6~0.7MPa, and the quality grade of compressed air is defined as solid particle level 2, water content level 2 or 3, and oil content level 1. The post-processing equipment here generally needs to be equipped with a compressed air filter to meet the gas standard.

General Overview

• pressure range: The pressure setting range of compressed air in the metallurgical industry is wide, from 0.2MPa of low pressure to 1.3MPa of high pressure or more, depending on the application scenario and equipment requirements.
• Quality Grade: In addition to pressure requirements, the quality level of compressed air is also very important. Different applications have different requirements for solid particles, water content and oil content of compressed air.

In summary, the pressure setting of compressed air in the metallurgical industry is a flexible and changeable parameter, and the appropriate pressure range and quality level need to be determined according to actual needs and industry standards.