Method for sorting recyclable products
View Patent ↗A method of producing a fuel substance by separating materials in a recycling operation based on BTU component content is provided. A stream of materials including non-sorted, heterogeneous, recycled materials is shredded. The stream of materials is separated into heavy and light materials with a separator that discharges the light and heavy materials in respective light and heavy material streams. Ferrous and non-ferrous materials are magnetically separated from the heavy material stream. The non-ferrous materials are discharged to a screen for further separation. The light materials are processed through a rotary trommel and a non-ferrous metal separator to separate the light materials into fine, coarse, and non-ferrous metal materials, the coarse materials having a BTU component content of at least four thousand BTU's per ton. Low density materials are separated from the coarse materials with a low density separator, thereby increasing the BTU component content of the coarse materials.
1. A method of separating and reusing or recycling materials in a recycling operation based on BTU component content comprising the steps of:
shredding a stream of materials comprising non-sorted, heterogeneous, recycled materials;
separating the stream of materials into heavy materials and light materials with a separator, the separator discharging the light materials in a light material stream and the heavy materials in a heavy material stream;
magnetically separating ferrous and non-ferrous materials from the heavy material stream;
discharging the non-ferrous materials to a screen for further separation;
processing the light materials through a rotary trommel and a non-ferrous metal separator to separate the light materials into fine materials, coarse materials, and non-ferrous metal materials, the coarse materials having a BTU component;
separating low density material from the coarse materials with a low density separator, thereby increasing the BTU component content per unit of volume of the coarse materials; and
producing a fuel substance using the coarse materials with the low density material removed.
2. The method of claim 1 , wherein the stream of materials comprises non-sorted recycled materials including a mixture of metal, plastic, and fiber.
3. The method of claim 1 , further comprising the step of separating the light materials from the heavier materials utilizing a vacuum to draw light materials from the stream of materials.
4. The method of claim 3 , wherein the light and heavy materials are separated by specific gravity.
5. The method of claim 3 , further comprising the step of separating the light materials from a return air stream by cyclone air separation.
6. The method of claim 1 , further comprising the step of separating the non-ferrous materials derived from the heavy material stream into non-ferrous metallic and non-metallic materials.
7. The method of claim 1 , wherein the low density material and coarse materials are separated by specific gravity.
8. The method of claim 1 , wherein the low density material and coarse materials are separated by cyclone air separation.
9. The method of claim 1 , wherein the low density material and coarse materials are separated by crushing and screening the coarse materials to remove the low density material.
10. The method of claim 1 , wherein a unit of the coarse materials is greater than three eighths of an inch in size.
11. The method of claim 1 , further comprising the step of using the fine materials as an alternative daily cover for landfills.
12. The method of claim 1 , further comprising the step of using the low density material as part of a mixture for use as underlay or covering for flooring material.
13. The method of claim 1 , further comprising the step of using the low density material as a component of concrete.
14. The method of claim 1 , wherein the low density material is foam.
15. The method of claim 1 , wherein the non-ferrous metals are recycled.
16. The method of claim 1 , where the non-sorted, heterogeneous, recycled materials include at least one of automobiles, appliances, office furniture, and industrial equipment.
17. The method of claim 1 , further comprising the step of blending the separated coarse materials with a combustible material.
18. The method of claim 1 , further comprising the step of blending the separated coarse materials with a combustible material in a mixer.
19. The method of claim 18 , wherein the combustible material. comprises wood chips.
20. The method of claim 1 , further comprising the step of blending the separated coarse materials with a combustible material in a mixer, resulting in separated coarse materials with either greater BTU content per unit volume or improved chemical properties.