Curb plates

Curb plates These are provided with an approximately 200mm high raised edge curb and have a retarding and banking-up effect on the clinker movement. See Figs. 24 and 25. 

These plates may be disposed either in checkerboard fashion on one side of the cooler behind one another, in order to retard or divert a continuous hot strand of clinker ("red river"), or they may, for example, be installed across the full width of the cooler in one or more rows in order to bank up the cl inker bed. If curb plate rows are installed, it is necessary to ensure that the row with the highest curb is located at the end of a cooling air compartment, because the depth (thickness) of the clinker bed should be constant within each compartment. If the banking-up effect of the curb plates does not comprise the whole compartment, so that the bed in the rear part is thinner than in front, the air flow will be concentrated in this rear part, while the thicker bed will get correspondingly less of the air and the clinker will be less effectively cooled. To prevent local air breakthroughs it is also important that a row of curb plates is always followed by a row of plates without holes. Nor should there be any holes in the plates located in the corners directly behind the portions of the grate which are filled in with monolithic refractory. 

Fig. 25 Wearirtg or curb plates on fixed grate plates (from Steinbil, 1972 ...

At first the analyses were carried out in the case involving the elastic linear behavior of the material by using formulas of existing stress intensity, often coming from studies on plates and arranged by a curb correction. 

Study on the expression of cellulose in over 800 S. enterica isolates from human infections, food and animals revealed serovar specific expression patterns, which could be correlated with disease severity in the respective hosts (Romling et al. 2003). S. typhimurium and S. enteritidis isolates consistently expressed cellulose at 28°C on agar plates, while isolates of the serovars Salmonella typhi. Salmonella choleraesuis and of the variant S. typhimurium var. Copenhagen did not express cellulose. However, when expressed by strains of serovars Typhimurium and Enteritidis, we observed that cellulose is always coexpressed with proteinaceous appendaces, the curb fimbriae (see below). 

The important elements are a mechanical digester or macerator and a small press. The digester consists of a horizontal barrel fitted with rotating beater arms and operated by a small diesel engine. This breaks up the fruit flesh into a pulp. The oil is extracted from the pulp either in a curb press, in which a heavy metal plate is forced down on to the charge in a perforated or slotted cylindrical container by means of a screw thread turned manually or in a small hand operated hydraulic press. These two devices enable up to 90% of the oil content to be recovered. The nuts are separated manually from the press residue and processed separately. 

Fig. 24 Plate with welded-on raised edge curb (from SteinbiB, 1972 )...

A concrete platform is illustrated in Exhibit 12-9. Like steel platforms, the concrete platform has a 4-in (100-mm) toe plate installed around its edge. A concrete platform for acid service is shown in Exhibit 12-10. Acid-resis t brick is used when specifically required, as shown in Exhibit 12-11. A curbed area is provided around the equipment most likely to leak during operation and maintenance. Shields are provided for flanges in acid service outside the curbed areas. 

Overlap of the portable dock plate must be at least 8 inches. This distance should be checked continuously to ensure that no slippage has occurred. Trailer creep could easily result in overlap shrinkage. Curbed edges on the plate help to ensure that the lift truck will not drive off of the plate. Legs that are attached to the bottom of the plate help to keep the plate from scooting backwards, when a lift truck accelerates on its surface. The grade of the ramp is also important if too short, an extension ramp may be needed. 

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