公开(公告)号：US11628446B2

公开(公告)日：2023-04-18

申请号：US17027247

申请日：2020-09-21

Applicant: Andritz Inc.

Inventor： Luc Gingras ,  Marc Berger

IPC: B02C7/12 ,  D21D1/30 ,  B02C7/02

Abstract: This disclosure relates to an apparatus for a counter-rotating mechanical refiner configured to mitigate the problems of feeding variations, load variations, high energy consumption due to poor feeding efficiency, low pulp quality, and reduced throughput capacity by positioning a flinger proximate to a rotor gap side of a first rotor, wherein the first rotor further comprises an inlet extending through the first rotor, such that a portion of the operational flinger deflects feed material from the inlet into the refiner gap while rotating in the direction of the first rotor.

公开(公告)号：US10589279B2

公开(公告)日：2020-03-17

申请号：US16220377

申请日：2018-12-14

Applicant: Andritz Inc.

Inventor： Marc Berger ,  Luc Gingras

IPC: B02C7/12 ,  D21D1/30

Abstract: This disclosure relates to a refiner plate segment, mechanical refiners, and methods to manufacture a refiner plate segment having one or more water channels disposed in a variable substrate profile along the radial length of a refiner plate segment base and disposed between the refiner plate segment inlet and the primary refining section, wherein the variable substrate profile comprises an undulating curve configured to complement a second undulating curve on an opposing refiner plate, and wherein dimensions of the one or more water channels are sufficiently narrow to prevent wood chips from entering the water channels and sufficiently wide to provide a bypass path for the free water.

公开(公告)号：US11643779B2

公开(公告)日：2023-05-09

申请号：US17081693

申请日：2020-10-27

Applicant: Andritz Inc.

Inventor： Luc Gingras ,  Marc Berger

IPC: B02C7/12 ,  D21D1/30

CPC classification number: D21D1/306 ,  B02C7/12

Abstract: A refiner disc including: a refining zone on a front face of the disc; refining bars in the refining zone; and grooves between the bars, wherein each of the grooves include a rotational inducement element arranged on at least one sidewall of the groove and the rotational inducement element is configured to impart at helical flow of feed material flowing through the groove.

公开(公告)号：US20210180253A1

公开(公告)日：2021-06-17

申请号：US17081693

申请日：2020-10-27

Applicant: Andritz Inc.

Inventor： Luc GINGRAS ,  Marc Berger

IPC: D21D1/30 ,  B02C7/12

Abstract: A refiner disc including: a refining zone on a front face of the disc; refining bars in the refining zone; and grooves between the bars, wherein each of the grooves include a rotational inducement element arranged on at least one sidewall of the groove and the rotational inducement element is configured to impart at helical flow of feed material flowing through the groove.

公开(公告)号：US20210086189A1

公开(公告)日：2021-03-25

申请号：US17027247

申请日：2020-09-21

Applicant: Andritz Inc.

Inventor： Luc Gingras ,  Marc Berger

IPC: B02C7/12 ,  D21D1/30

Abstract: This disclosure relates to an apparatus for a counter-rotating mechanical refiner configured to mitigate the problems of feeding variations, load variations, high energy consumption due to poor feeding efficiency, low pulp quality, and reduced throughput capacity by positioning a flinger proximate to a rotor gap side of a first rotor, wherein the first rotor further comprises an inlet extending through the first rotor, such that a portion of the operational flinger deflects feed material from the inlet into the refiner gap while rotating in the direction of the first rotor.