US 2014/0112090 A1 · HOT ASPHALT PREPARATION SYSTEM AND METHOD FOR PRODUCING A NEW ASPHALT LAYER FROM THE ASPHALT TO BE RECYCLED

Abstract

Hot asphalt recycling system having a mixing hopper where the hot aggregate, exiting the drier, and the RAP are mixed; a pouring hopper which is opened to said mixing hopper from one end thereof and from whose other end RAP is poured, in order to obtain recycled asphalt concrete which is to be used in the production of one of the asphalt layers by using RAP. Said system comprising an air inlet pipe whose one end is connected to the heat source and whose other end is opened to the pouring hopper in order to transfer hot air, which is heated by a heat source, inside the pouring hopper; and at least one drying box in order to provide the RAP inside the pouring hopper to be poured to the mixing hopper in a sequenced manner and step by step.

Claims24

Dependent claims

A hot asphalt recycling system having a mixing hopper (60) where the hot aggregate, exiting the drier (50), and the RAP are mixed;

a pouring hopper (20) which is opened to said mixing hopper (60) from one end thereof and from whose other end RAP is poured, in order to obtain recycled asphalt concrete which is to be used in the production of one of the asphalt layers by using RAP, characterized by comprising an air inlet pipe (31) whose one end (312) is connected to the heat source (80) and whose other end (311) is opened to the pouring hopper (20) in order to transfer hot air, which is heated by a heat source (80), inside the pouring hopper (20);
and at least one drying box (22) in order to provide the RAP inside the pouring hopper (20) to be poured to the mixing hopper (60) in a sequenced manner and step by step.

A hot asphalt recycling method, in order to obtain the RAC, which is to be used in the production of one of the asphalt layers, by using RAP, characterized by comprising the steps of:

a) The RAP, exiting the RAP feeding unit, is carried onto the pouring hopper (20);
and said RAP is fed into the pouring hopper (20) in a controlled manner,
b) The hot air, which is heated from a heat source, is applied into the pouring hopper (20);
and said hot air is drawn by means of a vacuum from the bottom so that the hot air enters into the pouring hopper (20),
c) The RAP is poured into the mixing hopper (60) step by step so that the RAP is waited inside said pouring hopper (20) for a limited duration,
d) The air inside the pouring hopper (20) is exhausted through the exhaust outlet (51) of the drier (50),
e) The RAP, which is heated while it is being poured from the pouring hopper (20), is mixed in the mixing hopper (60) with the aggregate exiting the drier (50).

4 more elements

Dependencies are inferred from the claim text.

Hot asphalt preparation system and method for producing a new asphalt layer from the asphalt to be recycled

Life of this patent

Hot asphalt preparation system and method for producing a new asphalt layer from the asphalt to be recycled

Life of this patent

Abstract

Claims24