Selection of drying equipment and examples of thermal calculation
(1) Known conditions:
A beneficiation plant pyrite flotation concentrate was dried with a cylinder dryer.
The weight of the concentrate before drying is G 1 = 7000 kg / h;
The moisture of the concentrate before drying is W 1 = 16%;
The moisture of the concentrate after drying is W 2 = 6%;
The temperature of the wet concentrate before entering the dryer T 1 = 10 ° C;
The temperature of the dry concentrate when leaving the dryer T 2 = 90 ° C;
The nature of the air entering the furnace is t 0 = 20 ° C; ф 0 = 70%, I 0 = 46.47 kg / (kg K) from the Id diagram Id, d 0 = 10.42 g / kg dry air;
The temperature of the flue gas when entering the dryer is t 1 =800 ° C;
The exhaust gas temperature discharged by the dryer is t 2 = 110 ° C;
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