Process for manufacturing highly water absorbing and water retaining granulates, these granulates and their use, especially agriculturally.

摘要

The process consists in agglomerating, under a certain pressure, a specific mixture of natural products (powdered rocks, clays, fibres, etc) and of a heat treatment of the mixture thus conditioned. The granulates obtained by the said process are advantageously employed in agriculture, especially for upgrading sandy soils.