FIELD: construction.
SUBSTANCE: method for production of an asphalt mix, in which the removed asphalt in the form of asphalt crumb and/or new material in the form of grain fillers together or separately are heated and dried in drum plants and then in the mixing plant mixed with bitumen, forming the asphalt mixture suitable for laying. Besides, mixing of heated and dried asphalt crumb and/or grain fillers is carried out in gaseous medium with low oxygen content, oxygen content in which makes maximum of 10%. Drying and heating of asphalt crumb and/or grain fillers is carried out in drum plants with the help of gases with low content of oxygen, which have temperature in the range from 500 to 1000°C, and then moved into the mixing plant. Moving and mixing is also carried out in gaseous medium with low content of oxygen, besides, cold gases are sent into the supply system and into the mixing plant with low oxygen content, which have temperature in the range from approximately 20 to 150°C, or cooled gases with low oxygen content, having temperature in the range from approximately 150 to 300°C, and bunkering of the heated and dried asphalt crumb and/or grainy fillers prior to mixing with bitumen and/or bunkering of finished asphalt mixture is also carried out in the gaseous medium with low oxygen content. Also the device is described for production of asphalt crumb.
EFFECT: possibility to repeatedly use removed asphalt and increased efficiency of asphalt production by saving of raw materials and thermal energy.
28 cl, 12 dwg
