English to Spanish Science Petroleum Eng/Sci Sedimentos en productos de petróleo

El texto describe formas de determinar la presencia de sedimentos en productos de petróleo. Contexto:

"Sediment in blended marine diesel fuels, particularly **catalytic fines** present in some middle distillates used for blending, is a cause for concern to vessel operators. To improve the information available on the nature of sediments, ASTM developed ASTM Test Method for Inorganic Particles in Marine Residual Fuel Oils by Selective Centrifugal Separation (D 4484). This method covers the determination of inorganic particles, excluding those containing iron, in marine residual fuel oils. In the absence of other contaminants such as sand or dirt, this method provides a gravimetric determination of fluid catalytic cracking process fines in residual fuel oils."

Incluyo también una explicación que encontré de qué serían estas "catalytic fines":

"Residual fuels contain contaminants such as water, sediment and catalytic fines all of which have to be reduced to acceptable levels prior to entering the engine. Of these, the most damaging to the engine are **catalytic fines**, which are hard, abrasive, irregularly shaped particles of aluminum silicate and are a residue from the refinery process." (http://here.alfalaval.com/zino.aspx?pageID=3&articleID=619)

¿Podría alguien indicarme cómo se conocen estos elementos en español (Argentina)?

Muchas gracias por adelantado!