In Figure 8.2 just one constant pressure drop curve for each material was included on the
plot. Figures 8.3 and 8.4 are similar plots with a range of constant pressure drop lines
included. Figure 8.3 compares the two materials (A and B) when conveyed through a
50 m long pipeline of 75 mm bore, and Figure 8.4 is a similar comparison for a 500 m
long pipeline. In each case the influence of conveying line pressure drop on the material
conveying potential can be clearly seen.
In addition to the individual figures illustrating the influence of conveying line
pressure drop on material flow rate, Figures 8.3 and 8.4 together additionally show the
influence of conveying distance on material flow rate, air flow rate and solids loading
ratio for the two materials. These are comprehensive conveying characteristics for a
given material in a given pipeline and are the basic data for the analysis presented in
this Design Guide.
The determination and use of conveying characteristics are considered in detail in
Chapter 11 and in many of the following chapters in Part B of the Design Guide.