A METHOD FOR HIGH-TEMPERATURE UTILIZATION OF PHOSPHOGYPSUM

摘要

This invention relates to a method for high temperature utilization of phosphogypsum wherein phosphogypsum or phosphogypsum along with power plant ashes in an amount from 2 to 75% par weight relative to the total dry mass of the materials, and a ground fuel are agglomerated and then the produced granulated material is sintered in a rotary furnace at a temperature 1000 - 1150°C, the agglomeration step being a wet process with added to the mixture of dry raw materials and/or originating from wet raw materials.