portance, whi ch is 3–5 m/s. T h e e q u a t i o ns p r o p o s e d b y S c h o fi e ld a n d G l i k in [ 4 9 ] , K e l l y [ 2 0 ] , a n d G l i k in [ 1 1] h a v e t h e o r e t i c a l b a s is

The invention discloses a kind of method of follow-on rotary kiln large-scale production phosphoric acid, comprise the following steps: first raw material carbonaceous reducing agent, Rock Phosphate (72Min BPL) and silica are carried out pre-treatment respectively, then mix; By ball in pretreated carbonaceous reducing agent powder, rock phosphate powder and ground silica mixing manufacture

Jan 01, 2005 Jan 01, 2005 Approach is the difference between the tempera- tures of the water and the wet bulb. It is a significant determinant of cooling tower size as these selected data indicate: Approach (~ 5 10 15 20 25 Relative tower volume 2.4 1.6 1.0 0.7 0.55 Other criteria for dryers and cooling towers will be cited later. 9.2

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Conjugate Model for Drying of Thin Slabs Using Impinging Jets. 170 Pages. Conjugate Model for Drying of Thin Slabs Using Impinging Jets

Jan 01, 2010 Jan 01, 2010 The moisture content at which the drying rate begins to decline is called critical moisture content. Some of the variables on which the transition point depends are indicated in Figures 9.3(c) and (g)—for example, the nature of the material, the average free moisture content, and so on. The shape of the falling rate curve sometimes may be approximated by a straight line, with

used to dry the pulp to 32 percent moisture, and drying is com-pleted in a fourth kiln at a gas discharge temperature of 1800F. A steam-tube rotary drier is used advantageously as the fourth drier, since it allows closer temperature control, but it is gen- ... while in the steam-tube drier the hot air flows counter-current to the pulp. As

US4118524A US05/735,575 US73557576A US4118524A US 4118524 A US4118524 A US 4118524A US 73557576 A US73557576 A US 73557576A US 4118524 A US4118524 A US 4118524A Authority US United States Prior art keywords calcium hypochlorite particles percent slurry water Prior art date 1972-07-31 Legal status (The legal status is an assumption and is not a legal conclusion

To keep this ratio at the safe level the sodium sulfate to sodium hydroxide should be maintained above 2:5. The sodium sulfate comes out of solution in high sodium hydroxide concentration and by doing forms a protective layer on the surface of the plate. Also keep the lowest T.D.S level. (Total dissolved suspended & solid)

Solution: Temperature difference between hot source and ambient air: At = 2,350 80 = 2., 270 F Use a hood diameter 1 foot larger than the hot source: Df = 1.67 +1.0 = 2.67 feet Total exhaust rate required from Figure 14: V = 1, 150 cfm Rectangular low-canopy hoods In a similar manner, Hemeon's equations for low-canopy hoods may be modified and

Air atomizer The amount of air used for atom- izing is only a fraction of the total air required for combustion, e.g., Total Air Air to To Burn 1 Gallon Atomize 1 Gallon 1700 SCF 80 SCF Nevertheless, combustion begins sooner and finishes more rapidly than with any other type of burner - shorter flame

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One of the simplest methods involves placing a 6.67% gelatin solution at 36o C in an 8-mm diameter glass tube in a water bath at 24o C and starting the timer. In order to ensure continuous mixing of the gelatin solution, steel balls of 6 mm diameter are dropped into the tubes at intervals of 30s