A newly built giant blast furnace has been officially put into production in Henan Province, marking a new breakthrough in the country's metallurgical industry. This blast furnace has been dubbed "Big MAC" reputation, its construction not only fills the gap in domestic blast furnace construction, but also will greatly enhance China's competitiveness in the global metallurgical market.

In recent years, the problem of protecting the environment has aroused wide concern. Environmental pollution, resource waste and ecological destruction are common phenomena, which bring great pressure to the earth. Faced with this serious challenge, we have to take active measures to protect our environment.

Metallurgy is a discipline that studies the smelting, refining, processing and modification of metals and their alloys in the production process. It relates to the physical properties of metals, chemical properties and metal-related process technology and other fields. As an important engineering technology subject, metallurgy is of great significance for promoting social and economic development, improving production efficiency and product quality.

The operation characteristics of the closed cooling tower in the connecting season + The closed cooling tower is a kind of equipment that puts the shell and tube heat exchanger in the tower and reduces the temperature according to the circulating air, spraying water and cooling the circulating water heat exchanger. In recent years, it has been more widely used in power electronics technology, mechanical processing and manufacturing, central air conditioning system and other fields.

This paper introduces the key points to pay attention to when designing the down-flow cooling tower. The selected finished product cooling tower needs to meet the requirements of "glass fiber reinforced plastic cooling tower Part 2: Large glass fiber reinforced plastic cooling tower" GB7190.2-1997.