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公开(公告)号:US3840337A
公开(公告)日:1974-10-08
申请号:US36804373
申请日:1973-06-07
申请人: HEISE C
发明人: HEISE C
CPC分类号: F26B11/0445
摘要: A rotatable drying drum is provided with a drum wall having insertions and a combustion means for natural or liquid gas so that stone minerals can be dried and heated for the preparation of bituminous building materials. The combustion means includes a plurality of individual burners which are located in an end region of the drying drum.