Water used in Steel Plant and its Types...

Water used in Steel Plant and its Types Water is used in every shop of a steel plant and for practically all the functions of water. A steel plant cannot function without water. Because of this steel plants are normally built near to ample sources of fresh water to ensure the availability and quality of water needed by the steel plant. However these days, greater attention is given to the management of available water resources in the steel plant environment, particularly in terms of water quality, quantity, and how it is used. A steel plant uses large quantity of water for steam generation, cooling, waste transfer, and dust control etc. The processes of the plant cannot take place without the availability of water. Enormous quantity of water is needed at every stage of production. Less than 10 % of this water is actually consumed and balance water is usually is returned to the system. Several factors make water a versatile material. It is normally easy to handle, readily available, and inexpensive. It can carry large amounts of heat per unit volume (high specific heat). It neither expands nor compresses significantly within ambient temperature ranges. It does not decompose. It can dissolve, entrain, suspend, and subsequently transport other materials. In spite of the tremendous importance of water in the steel plants (Fig 1), the way water is used is not standardized as are the steel production processes and there is no ‘one size fits all’ strategy or technology to use water in each particular context. There are a number of aspects related to water and water related technologies which are important for a steel plant. These are given below. Water is a medium for heat transfer and thus is related to energy efficiency Importance of...