| 摘要 |
PCT No. PCT/FR91/00180 Sec. 371 Date Oct. 29, 1991 Sec. 102(e) Date Oct. 29, 1991 PCT Filed Mar. 6, 1991 PCT Pub. No. WO91/14133 PCT Pub. Date Sep. 19, 1991.An adjustable temperature gas feed is available that feeds firstly the grinder and secondly pre-drying means. At the outlet from the grinder, the gas that has passed through the grinder is combined with the gas that has passed through the pre-drying means to convey the ground material. The total gas flow rate QA at the oulet lies between a minimum flow rate and a maximum flow rate, and the flow rate Q1 of the gas passing through the grinder (1) is proportional to the quantity Qc of material placed in the grinder. According to the invention, a temperature T to be reached by the gas outlet temperature is set (optionally as a function of the moisture content of the material), and the gas feed is adjusted in such a manner that the feed gas is as hot as possible with the quantity of gas passing through the pre-drying means being limited to as little as possible. The method adapts to the material having different moisture contents and improves efficiency while leading to combustion with low NOx.
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