Iron-containing refractory balls for retorting oil shale

Details Iron-containing refractory balls for retorting oil shale Iron-containing refractory balls for retorting oil shale

1982-09-30

1984-03-20

Lusignan, Michael R.

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

208 11R, 264 7, 264 8, 427216, 427217, 4273741, 428404, B05D 700, B32B 1502

Patent

active

044381611

ABSTRACT:
Iron-containing refractory balls, in a retorting process for oil shale, permit effective magnetic separation of the balls from the spent shale. These ceramic balls can be made by a process such as admixing powdered alumina and water to form an extrudable mixture, extruding to form cylinders, reshaping cylinders into balls, overcoating with iron particles, further overcoating with alumina, and firing.

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