US 7,891,590 B2 · Method and apparatus for reusing bituminous products

Abstract

Method for reusing bituminous products (11), in particular bitumen containing roofing materials and membranes, wherein the bitumen containing products are placed in a second hopper (9), where a particulate material having a grain size between 5 mm and 35 mm is placed in a first hopper (5), and that in the bottom of the second hopper, conveyor means (10) urges the bituminous material into a mixing chamber (8), and that inside said mixing chamber a milling and/or crushing wheel (14) is arranged, which wheel engages and crushes/mills the material transported from the second hopper in an engagement zone, and at the same position as the wheel engages the bituminous material, the particulate material by means of a first conveyor (7) is fed into the engagement zone, and that the wheel's action will fragment the materials and at the same time mix the fragmented bituminous materials and the particulate materials, and transport the material past a sieve (15), where material having a particle size smaller than the sieve size will leave the mixing chamber and be collected and stored in suitable storage means.

Claims14

Dependent claims

Method for reusing bituminous material products, where a particulate material having a grain size between 5 mm and 35 mm is placed in a first hopper, wherein the bituminous material having bitumen containing products are placed in a second hopper, and that in the bottom of the second hopper, conveyor means urges the bituminous material into a mixing chamber, and that inside said mixing chamber a milling and/or crushing wheel is arranged, which wheel engages and crushes/mills the material transported from the second hopper in an engagement zone, and at the same position as the wheel engages the bituminous material, the particulate material by means of a first conveyor is fed into the engagement zone, and that the wheel's action will fragment the materials and at the same time mix the fragmented bituminous materials and the particulate materials, and transport the material past a sieve, where material having a particle size smaller than the sieve size will leave the mixing chamber and be collected and stored in suitable storage means.

Apparatus for reusing bituminous materials, wherein the apparatus comprises:

a first hopper for receiving particulate material, said first hopper having inlet and outlet means;
a second hopper for receiving bitumen containing products, said second hopper having inlet and outlet means;
a mixing chamber;
a first conveyor means having a first end arranged adjacent the outlet of the first hopper and a second end adjacent and in communication with the mixing chamber, said first conveyor for conveying particulate material from said first hopper to said mixing chamber;
a second conveyor means arranged along the bottom of the second hopper means, and in communication with the mixing chamber, said second conveyor for conveying bitumen containing products from said second hopper to said mixing chamber, said second conveyor for conveying bitumen containing products from said second hopper to said mixing chamber;
a milling and/or crushing cylinder arranged inside the mixing chamber;
a sieve means being a part of the lower wall portion of the mixing chamber, said sieve means for sieving mixing chamber output;
and
material receiving means arranged outside the mixing chamber adjacent the sieve means, said material receiving means adapted to receive the sieved mixing chamber output, wherein the apparatus is operable to mix particulate material from said first hopper with bitumen containing products from said second hopper at an engagement zone at a surface of said milling and/or crushing cylinder, and wherein said milling and/or crushing cylinder is operable to mill and/or crush the mix of particulate material and bitumen containing products to output a reusable bituminous material mix.

6 more elements

Dependencies are inferred from the claim text.

Method and apparatus for reusing bituminous products

Life of this patent

Method and apparatus for reusing bituminous products

Life of this patent

Abstract

Claims14