Stone size

FIG. 12-88 CimeA shows surface variations with stone size, 100 percent active surfaces. Curv es in group B show the effect of irregular stone size. 

Ref. no. Kiln design Fuels Output range (t/d) Range of stone size (mm) Net heat usage (kcal/kg) Power usage (kWh/t)... 

For the many applications of quicklime, active lime is the preferred product, hence careful control of the dissociation (calcination) process is necessary, bearing in mind that the time required for complete calcination depends on factors such as kiln temperature, stone size, and porosity of feed material. The dissociation of limestone above the decomposition temperature is a heterogeneous reaction (Figure 10.3). 

Shingle beaches differ from the armored slopes principally in the size of the beach material, and hence its mobility. The typical stone size is sufficiently small to permit significant changes of beach profile, even under relatively low levels of wave attack. A shingle beach may be expected to adjust its profile to the incident wave conditions, provided that sufficient beach material is available. Run-up or overtopping levels on a shingle beach are therefore calculated without reference to any initial slope. 

In all situations the stone size must be larger than the size of the wire mesh in the basket this defines the minimum size. 

Results refer to where the damage takes place and how severe the damage is. Assuming equal armor stone size at tnmk and roimdhead, all authors agree on where first and how damage occurs, see Fig. 22.7. 

Results for the minimum stone size according to Eq. (22.3) for relative stone density A = 1.6 and different values for significant breaker index 7 are reported in Table 22.1. The breaker index values are evaluated according to van der Meer with Sop = 0.03 and hs/Lop = 0.05. 

The volume of the toe berm shall be such that its material is sufficient to protect the scour/erosion hole from further erosion without destabilizing the armor layer slope, i.e., its width should be around three times the erosion depth and its thickness at least four times its maximum stone size (SPM Burcharth et al. ). In this way, slide berm stones can form although dispersed a stable and continuous slope covering the sand bed. 

Since the functionality of a LCB is very sensitive to crest elevation, the crest settlement should be also monitored. As soon as the crest is lowered on the average more than half the armor stone size or au3rwhere more than one stone size, the armor layer should be recharged. 

Coke, sized 17 Stone, sized, lumps over 4 in 15... 

Stone size is another important factor to be considered for the prognosis of a successful cholelitholytic treatment. 

Also urso-treated patients seem to respond to treatment in a manner which is inversely related to stone size. In a recent review Bachrach and Hofmann (5) analyzed the results of several studies with ursodeoxycholic acid and observed that patients with stones less than 5 mm in diameter have a 30% chance of their gallstones disappearing within one year or even 6 months patients with stones 5-10 mm in diameter have a dissolution rate of about 18% in a period of time not shorter than a year and in patients with stones more than 10 mm in diameter any dissolution which might occur will require more than a year and the expected success rate is probably 10%. 

The mass of Ch removed per unit time per unit area is irrespective of stone size. The mass of cholesterol dissolved from a stone by BS solution increases with stone size and is linearly related to its surface area[23]. 

Figure 17.7 A 540-g/m NW-NP geotextile with several stone sizes.

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