21-07-2023 дата публикации
Номер: CN116462431A
Принадлежит:
The invention discloses a coal gangue thermal activation calcining process based on a cement firing system, which specifically comprises the following steps: firstly, pretreating coal gangue, then calcining and cooling, and then carrying out ultrafine grinding to obtain a high-activity calcined coal gangue mixture; wherein the low-calorific-value coal gangue is firstly fed into indirect pre-burning equipment to be subjected to rotary pre-burning, then fed into a rotary kiln to be subjected to thermal activation calcination and then fed into a grate cooler to be cooled; a drying heat source of the indirect pre-burning equipment is hot flue gas at the kiln tail of the rotary kiln; high-calorific-value coal gangue is directly fed into indirect thermal activation equipment to be subjected to thermal activation rotary calcination and then enters a single-cylinder cooling machine to be cooled; a drying heat source of the indirect thermal activation equipment is hot flue gas from a grate cooler ...
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