Maximum particle size

Static bath mode. Feed enters at one end of the dmm and the floats exit from the other end. The sink product is removed continuously from the rotating dmm through the use of lifters attached to the dmm which empty into a launder as they move to the top. A modification of the simple dmm separator is the two-compartment dmm separator which allows a two-stage separation. In the cone-type separator (up to 6.1 m in dia and 450 t/h) feed is introduced at the top. The medium in the cone is kept in suspension by gentle agitation. The sink product is removed from the bottom of the cone either directly or by airlift in the center of the cone. The maximum particle size that can be separated is limited to 10 cm. Other separators include the Drewboy bath and the Norwaltbath (2). 

The term du.st is used if the maximum particle size of the solids mixture is below 500 [Lm. 

The maximum particle size obtained in an experimental study using a stirred tank (Figure 8.15) and bubble column (Figure 8.11c) respectively is plotted against the estimated average shear rate in Figure 8.17. 

Particle count the number of particles greater than 0.5 im in 1 ml of water (maximum particle size is 1 im). 

Triple media (MM) filters use anthracite, sand, and garnet, with the garnet providing the final and finest filtering quality, so that water with a turbidity less than 5 nephelometric turbidity units (NTU) and 20p maximum particle size can be expected. Media SG, grain size, and bed depths are given in Table 9.1. 

By investigating the effects of pH, it was shown that H2P04 was the actual precursor of lanthanum phosphate precipitation. The particle yield was proportional to the H2P04 concentratian. The number density was proportional to the square of the H2p04 concentration. A maximum particle size was obtained at an optimum precursor concentiation as a result of the tradeoff of the nuclealion and growth. 

The flow of mineral particles on the deck of a riffled table results in a distribution that is essentially similar to that obtained with a smooth table. However, some additional features are introduced due to the action of the riffles. In the case of a smooth table, a hydraulically classified fraction usually makes a better feed as compared with an unsized mixture. However, a classified feed does not always work best on a riffled table, and screen-sized or unsized feed is often used. The maximum particle size that can be treated in a riffled table is generally larger than that corresponding to a smooth table. 

Their physical properties (maximum particle size, mass, etc) are specified in the analytical procedure. Sampling covers sampling (in the narrow sense) and sample reduction. 

Waste feed rate to anolyte cell —Maximum particle size... 

Infrared spectra suggested that a sulfate ion coordinates to two titanium atoms as a bidentate in particles. The maximum particle size was found at Aerosol OT mole fraction of 0.35 in the mixtures. The particle size increased linearly with increasing the concentration of sulfuric acid at any Wo, but with increasing Wo the effect was the opposite at any sulfuric acid concentration. These effects on the particle size can be explained qualitatively in relation with the extent of number of sulfate ions per micelle droplet. These precursor particles yield amorphous and nanosized TiO particles, reduced by 15% in volume by washing of ammonia water. The Ti02 particles transformed from amorphous to anatase form at 400°C and from anatase form to rutile form about at 800°C. In Triton X-100-n-hexanol-cyclohexane systems, however, spherical and amorphous titanium hydroxide precursor were precipitated by hydrolysis of TiCl4 (30). When the precursor particles were calcinated,... 

From Equations 14, 20, and 31 it is clear that the difference in the two t values for which zd -> oo and Zi = Xo is negligible, so that Equation 31 is an accurate cutoff value. The restriction becomes t t (z) for z > xu or t — tx m( i ) for < The limits imposed on maximum particle size by both the drag-slip and Davies equation cutoff are shown in Figure 7. 

Figure 8 shows values of (dZi/dz )a,t plotted vs. particle size for times ranging from one to 10 hours and an observation altitude of 15,000 meters. The calculations were done with the atmospheric parameters mentioned previously, and with a particle density Pp = 2.6 g./cm.3. Superimposed on the graph are lines corresponding to various initial cloud tops. The intersection of these lines with the dzi/dz lines gives the cutoff size values. As expected, the correction factor increases with time and particle size. For an initial cloud top at 35,000 meters, observations at t = 3 hours give a maximum particle size of 138/a, with the correction factor varying from zero for small sizes to 1.02, 1.15, and 1.62 at 50, 100, and 138/a, respectively. If the observation time is increased to five hours, the maximum particle size decreases to 113/a, and the correction factor values increase to 1.03,1.33, and 1.78 at 50, 100, and 113/a. 

A final analogous situation occurs in the in-situ silica generation of silica particles within a polymer network. At least in some cases, the particles are constrained in size by the network strands, in that the maximum particle size observed decreases with decrease in the molecular weight between cross-links (increase in extent of cross-linking) [262, 263]. 

One relationship for the maximum particle size that can exist at equilibrium ran tie cstimalrd using a relationship... 

The maximum particle size for efficient toughening is in the order of 5-10 /am (Kinloch, 1989 Pearson and Yee, 1991). It has been proved experimentally that larger particles are relatively inefficient (Pearson and Yee,... 

Naturally the final size of the metallic reinforcing particles is limited by the initial size of the oxide particles. This is rather important, since there is a critical maximum particle size which can lead to degradation of the composite properties via thermal stress-induced cracking.2 The critical maximum particle size was evaluated by Kolhe et al.,n both experimentally and via finite element analysis. Assuming perfectly spherical particles, the difference in thermal expansion coefficients between Ni and a-Al203 resulted in a critical particle size for an isolated Ni particle of 3.0 pm. Experimental observations... 

This criterion imposes constraints on the maximum particle size as a function of the bed dilution and vice versa, which is graphically represented by Fig. 10 for various bed lengths. In general, samples should not be diluted more than 5-10 times. 

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