Roller crusher having at least one roller comprising a flange

1. A roller crusher having two parallel rollers arranged to rotate in opposite directions, towards each other, and separated by a gap, each roller having a first end and a second end, said roller crusher comprising:

a flange, formed from a first material, attached to an outer surface of one of said rollers near at least one of said ends of one of said rollers,

said flange extending in a radial direction of said roller;

said flange having a height above the outer surface of said roller which is sufficient to extend across said gap along a nip angle of said roller crusher;

wherein said flange includes a wear-resistant structure provided on an inside surface of the flange to protect said flange from wear, the wear-resistant structure including at least one mounting post configured to be received in a mounting hole formed on the inside surface of the flange, the wear-resistant structure being formed from a second material different from the first material and harder than the first material.

2. The roller crusher according to claim 1 , wherein said height is sufficient to extend across said gap substantially along a nip angle of said roller crusher, when said gap is set to a maximum operational gap.

3. The roller crusher according to claim 1 , wherein said flange is positioned at the first end of the roller and said wear-resistant structure extends from the inside of the flange toward the second end of the roller.

4. The roller crusher according to claim 3 , wherein said wear-resistant structure is arcuate.

5. The roller crusher according to claim 3 , wherein said wear-resistant structure is continuous around the entire flange.

6. The roller crusher according to claim 3 , wherein said wear-resistant structure is intermittent.

7. The roller crusher according to claim 1 , wherein said flange is divided into a plurality of segments.

8. The roller crusher according to claim 1 , wherein said flange is attached to said roller by means of adhesive, bolting, screwing, welding, brazing or any other suitable fastening technique.

9. The roller crusher according to claim 1 , comprising a flange attached to each end of one of said rollers, respectively.

10. A roller crusher having two parallel rollers arranged to rotate in opposite directions toward each other, the rollers being separated by a gap, each roller having a first end and a second end, the roller crusher comprising:

a flange attached to an outer surface near a first end of one of the rollers, the flange extending in a radial direction of the roller to a height above the outer surface of the roller, wherein the flange extends across the gap along a nip angle of the roller crusher;

a wear-resistant structure provided on an inside surface of the flange and extending from the flange toward the second end of the roller, the wear-resistant structure including at least one mounting post configured to be received in a mounting hole formed on the inside surface of the flange, the wear-resistant structure being formed of a material harder than the flange to protect the flange from wear.

11. The roller crusher of claim 10 further comprising:

a second flange attached to the second end of the one of the rollers, the second flange extending in the radial direction of the roller to a height above an outer surface of the roller, wherein the flange extends across the gap along a nip angle of the roller crusher; and

a wear-resistant structure provided on an inside surface of the second flange and extending from the second flange toward the first end of the roller, the wear-resistant structure including at least one mounting post configured to be received in a mounting hole formed on the inside surface of the flange, the wear-resistant structure being formed of a material harder than the second flange to protect the second flange from wear.