A Geographic Study of Deposits and Corrosion^⋆ Available to Purchase

The problem to be solved in this article is: “How does the composition of water-formed deposits vary among plants located in different geographical areas?” The United States Geological Survey has made many studies of industrial waters.¹  A report made in 1934 shows a map giving hardness data for the entire country (Figure 1). The Dow Chemical Company’s work on the X-ray study of deposits found in operating equipment over the last ten years shows that the composition of deposits is modified by the use of water treatment and by corrosion phenomena. The value of water treatment to decrease deposits and reduce corrosion is well recognized by industries whose equipment is discussed. The data to be used will be based on 143 samples of deposits taken from boilers, condensers and pipe lines. These samples were taken over an area of ten industrially important states. Twenty practical cases are...