Una corriente conteniendo 65% de agua y 25% de solido es alimentada a un granulador a una velocidad de flujo de 2.000 kg/h. La alimentación es premezclada en el granulador con producto reciclado desde el secador. El objetivo de esto es reducir la cantidad de agua en la alimentación que ingresa al granulador al 30%. Al secador ingresa una corriente de aire para reducir la cantidad de humedad de los sólidos. El aire que ingresa al secador contiene 3% de agua y abandona el mismo con un contenido del 6 % de agua. El producto que abandona el secador tiene 16,7% de agua. Calcule: a. La velocidad de flujo de producto que es recirculada (R) en lb/min b. La velocidad de flujo de aire que ingresa al secador (S) en kg/h

The feasibility and profitability of game ranching have been amply demonstrated by a number of studies. The rationale behind advocating game ranching in Africa is that conditions in many parts of' the continent, whether resulting from inadequate rainfall or presence of certain disease organisms' are not appropriate for production of exotic cattle and other domestic stocks. Indigenous wild animal species on the other hand have evolved in the African ecosystem and are better adapted to the prevailing conditions and should therefore be more productive.

Game ranching is currently most developed in southern Africa (particularly South Africa Namibia and Zimbabwe), although a private game ranch, the Galana Ranch, was established in Kenya in the 1970s (King and Heath, 1975; Thresher, 1980). The ranch initially focused on three species: the fringe eared oryx, Oryx beisa callotis, the African buffalo and the eland. Reported advantages of the eland over the Boran cattle included much lower water requirement, faster breeding and growth, earlier maturity and ability to put on weight in grazing conditions under which the Boran cattle began to lose weight and approximately 14 % higher dressing out weight. In addition to these biological and physiological advantages a cost-benefit analysis of maintaining a breeding herd of 11,000 oryx and 5000 Boran on the ranch showed clearly that the financial returns on the oryx was far superior to that of cattle (Thresher, 1980).

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