# US 2014/0196858 A1 · Apparatus for disperser plate and method to refine paper > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196858 A1 - Document ID: US20140196858A1 - Status: Published application - Kind: A1 - Application number: 14/082,424 - Filed: 2013-11-18 - Published: 2014-07-17 - Earliest claimed: 2012-12-13 - Assignees: Andritz Inc. - Applicants: Andritz Inc. - Inventors: Luc Gingras - Web page: https://patentgrep.com/patent/US20140196858A1 ## CPC - D21B 1/08: the raw material being waste paper (chemical part D21C5/02); the raw material being rags - B02C 7/12: Shape or construction of discs - D21D 1/008: {Discs} - D21D 1/22: Jordans - D21D 1/30: Disc mills - D21D 1/306: {Discs} - D21D 1/26: Jordan bed plates - D21B: FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT - B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02}) - D21D: TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE ## Abstract An assembly of opposing discs or cones for a disperser where each disc or cone has mounted to it a plate or an array of plate segments with a front surface on each plate or array of plate segments and each surface has a series of bars, grooves and dams. The bars are in rows, with the rows separated by annular dams at substantially fixed radial locations, and the grooves are adjacent the bars in the rows so that the grooves form a serpentine passage extending radially between the opposing plates or array of plate segments on the opposing discs or cones. The opposing plate or array of plate segments are arranged such that the annular dams on one plate or array of plate segments face roughly the middle of the row of bars on the opposing plate or array of plate segments. ## Claims ### Claim 1 A disperser assembly comprising: opposing arrays of fusion plate segments, wherein each fusion plate segment in the opposing arrays of fusion plate segments comprises a front surface having rows of alternating fusion bars and grooves, wherein each fusion bar has a planar upper surface and each row of alternating fusion bars and grooves is separated by annular dams located at substantially fixed radial locations on the front surface of each opposing fusion plate segment, wherein a number of alternating fusion bars and grooves increases as the rows of alternating fusion bars and grooves extends radially outward along the front surface, wherein the opposing arrays of fusion plate segments are arranged such that the annular dams on one fusion plate segment align with a row of fusion bars and grooves on an opposing fusion plate segment; and wherein the grooves form a serpentine passage extending radially between the opposing arrays of fusion plate segments. ### Claim 2 (depends on 1) The disperser assembly of claim 1, wherein the arrays of fusion plate segments are mounted on disperser discs. ### Claim 3 (depends on 1) The disperser assembly of claim 1, wherein the arrays of fusion plate segments are mounted on disperser cones. ### Claim 4 (depends on 1) The disperser assembly of claim 1, wherein the annular dams have substantially the same height as the planar upper surface of each fusion bar. ### Claim 5 (depends on 1) The disperser assembly of claim 1, wherein at least one of the annular dams have a height lower than the planar upper surface of each fusion bar. ### Claim 6 (depends on 1) The disperser assembly as in claim 1, wherein a width of one of the grooves is narrower between rows of fusion bars that are radially outward on the fusion plate segments than for one of the grooves between rows of fusion bars that are radially inward on the fusion plate segments. ### Claim 7 (depends on 1) The disperser assembly as in claim 1, wherein the front surface of the fusion plate segments is divided into at least one of a feed zone, a processing zone, a flat surface between an inner periphery, and an outer periphery of the fusion plate segments. ### Claim 8 (depends on 7) The disperser assembly of claim 7, wherein the processing zone of the front surface of the fusion plate segments is comprised of rows of bars extending between the feed zone on the fusion plate segments and the periphery of the fusion plate segments. ### Claim 9 (depends on 8) The disperser assembly of claim 8, wherein the annular dams between rows of fusion bars and grooves on one fusion plate segment are substantially aligned with a nadir of the grooves of the rows of fusion bars and grooves on the opposing fusion plate segment. ### Claim 10 (depends on 9) The disperser assembly of claim 9, wherein the fusion bars are separated from each other by grooves substantially as wide as a width of a single fusion bar. ### Claim 11 (depends on 10) The disperser assembly of claim 10, wherein the grooves between the fusion bars in a radially outward row are narrower than the grooves between the fusion bars a radially inward row. ### Claim 12 (depends on 7) The disperser assembly of claim 7, wherein the rows of fusion bars with planar upper surfaces in the processing zone extend at least one-half the radial distance from a feeding zone on the front surface of the fusion plate segments to an outer periphery of the fusion plate segments. ### Claim 13 (depends on 1) The disperser assembly of claim 1, wherein a radius of an end of one of the grooves on the front surface of one of the fusion plate segments substantially aligns with the radius of a center of a groove on the opposing fusion plate segment. ### Claim 14 (depends on 1) The disperser assembly of claim 1, wherein the planar upper surfaces of the fusion bars of the opposing fusion plate segments define a planar gap. ### Claim 15 (depends on 14) The disperser assembly of claim 14, wherein the planar gap is no greater than one millimeter. ### Claim 16 (depends on 1) The disperser assembly of claim 1, wherein the planar upper surface of at least one of the fusion bars has one or more narrow grooves. ### Claim 17 (depends on 1) The disperser assembly of claim 1, wherein the grooves form a sinusoidal passage extending radially between the opposing arrays of fusion plate segments. ### Claim 18 (depends on 1) The disperser assembly of claim 1, wherein the grooves form a modified box groove passage extending radially between the opposing arrays of fusion plate segments, the modified box groove passage having a first side and a second side. ### Claim 19 (depends on 1) The disperser assembly of claim 1, wherein the grooves of one fusion plate segment are shallower than the grooves of the opposing fusion plate. ### Claim 20 (depends on 1) The disperser assembly of claim 1, wherein grooves of one fusion plate segment are narrower than grooves of the opposing fusion plate. ### Claim 21 (depends on 1) The disperser assembly of claim 1, wherein a shape of the grooves within the rows of fusion bars and grooves change among the rows of fusion bars and grooves. ### Claim 22 A disperser assembly comprising: opposing fusion plates, wherein each fusion plate comprises a front surface, the front surface having rows of alternating fusion bars and grooves, wherein each fusion bar has a planar upper surface and each row of alternating fusion bars and grooves is separated by annular dams located at substantially fixed radial locations on the front surface of each opposing fusion plate, wherein a number of alternating fusion bars and grooves increases as the rows of alternating fusion bars and grooves extends radially outward along the front surface, wherein the opposing fusion plates are arranged such that the annular dams on one fusion plate substantially align with a row of fusion bars and grooves on an opposing fusion plate; and wherein the grooves define a serpentine passage extending radially between the opposing fusion plates. ### Claim 23 A method for dispersing and partially refining recovered paper with a disperser assembly comprising: rotating at least one of at least two opposing plate segments; injecting recovered paper into a feed zone of the at least one of the two opposing plate segments; moving the recovered paper to travel from the feed zone to rows of fusion bars and grooves separated by annular dams fixed radially to a surface of the at least two opposing plate segments and moving the recovered paper to travel radially outward through grooves forming a serpentine passage between the at least two opposing plate segments towards an outer periphery of the at least two plate segments.