FIELD: technological processes.
SUBSTANCE: invention relates to production of powdered lime from carbonate material and can be used in agglomeration production, non-ferrous metallurgy, chemical, sugar industry, construction materials industry, pulp and paper production. Proposed method of thermal treatment of fine carbonate material, mainly limestone, involves tangential supply of fuel and air through several inputs distributed in height located in upper zones of furnace, supply of fine carbonate material to furnace upper part, roasting of carbonate raw material in descending two-phase flow, removal of finished product from lower part of furnace, and waste gases from upper part of furnace.
EFFECT: high quality of the finished product and possibility of firing raw materials of wide fractional composition (0–3 mm).
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
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| SHAFT FURNACE FOR BURNING LUMP MATERIAL | 2016 |
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|
RU2425312C2 |
