Abstract:
The microbiological control of the secondary cooling systems (sprays) of the continuous casting machines is a great challenge for the operation of this equipment. Contaminants, especially oils and grease, water temperature, large volumes, among other factors, contribute to the strong growth of microbiology. There is also the formation of organochlorides compounds, with a very negative impact on the environment. The traditional control, made with sodium hypochlorite, increases the corrosive potential of the system, and requires high product consumption.
Chlorine Dioxide is an excellent biocide, and is a selective oxidizer, with great advantages over traditional biocides. Due to its characteristics, it must be generated at the site of application. In the past, its use was restricted due to the difficulty of generation, but the Purate technology has made its generation safe and efficient.
This paper presents the result of the application of Purate technology in a continuous casting machine, with excellent results