Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
  • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
  • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
  • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
  • B02C17/161—Arrangements for separating milling media and ground material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
  • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
  • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
  • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
  • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
  • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
  • B02C17/18—Details
  • B02C17/20—Disintegrating members
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
  • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
  • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
  • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
  • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
  • B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone

Definitions

• the polymeric resins are chemically and physically inert, substantially free of metals, solvents and monomers, and of sufficient hardness and friability to enable them to avoid being chipped or crushed during milling.
• Suitable polymeric resins include, but are not limited to: cross linked polystyrenes, such as polystyrene cross linked with divinyl benzene; styrene copolymers; polycarbonates; polyacetals, such as DelrinTM; vinyl chloride polymers and copolymers; polyurethanes; polyamides;
• the size of the milling media ranges from a few hundred microns to tens of microns, such as about 500 microns to about 10 microns, about 300 microns to about 10 microns, about 200 microns to about 10 microns, about 100 microns to about 10 microns, about 50 microns to about 10 microns, about 300 microns to about 50 microns, and about 300 microns to about 100 microns.
• smaller milling media leads to smaller particle size dispersions which often have favorable properties such as high gloss, enhanced color value, and brighter colors.
• the bulk density of polymeric milling media ranges from about 1.5 to about 0.7 g/ml, such as about 1.2 to about 0.7 g/ml, about 1.0 to about 0.7 g/ml, about 0.9 to about 0.7 g/ml, about 1.5 to about 0.9 g/ml, about 1.5 to about 1.0 g/ml, and about 1.5 to about 1.2 g/ml.
• inorganic media have bulk densities exceeding about 2 g/ml, such as about 2 to about 6 g/ml, about 2 to about 5 g/ml, and about 2 to about 3 g/ml.
• the mill introduces shear forces to mill the pre-mill mixture into a milled dispersion.
• the media reduces the shear gaps thereby magnifying the shear rate.
• one or more mills are selected from a rotor stator, an in-line disperser, a vertical media mill, a horizontal media mill, a tank and disperser, a tank and an overhead rotor stator, an impingement mill, an ultrasound mill, and a vibratory mill.
• the media mill is a rotor stator.
• the separating screen has heterogeneous pore sizes from about 500 microns to about 1 microns, such as about 400 microns to about 1 microns, about 300 microns, to about 1 microns, about 300 microns to about 10 micron, about 300 microns to about 20 microns, about 200 microns to about 10 micron, and about 100 microns to about 10 micron.
• FIG. 1 A system was assembled as depicted in Figure 1.
• the feed tank for the pump was a four liter stirred stainless steel tank jacketed for cooling with chilled water at 5°C.
• the feed tank was filled with 1590 grams of an aqueous pre-mix consisting of 25.0% Yellow 14 pigment, 41.8% Joncryl 674 liquid resin, 0.20% BYK 1719 defoamer and 33% water, which was pre-blended for 60 minutes with a Cowles blade mixer running with a tip speed of 12 meters per second.
• Example 1 A The dispersion removed from the vacuum receiver was collected and analyzed for particle size distribution for comparison against a plant test standard.
• a system was assembled as depicted in Figure 2.
• a series of three in-line rotor stators (identical to those in Example 1A), was fed from a peristaltic pump.
• the feed tank and pump were identical to those described in Example 1 A.

Landscapes

• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Crushing And Grinding (AREA)
• Disintegrating Or Milling (AREA)

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Citations (6)

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• 2014
  • 2014-02-28 JP JP2015560343A patent/JP2016508447A/ja not_active Withdrawn
  • 2014-02-28 WO PCT/US2014/019335 patent/WO2014134415A1/en not_active Ceased
  • 2014-02-28 EP EP14710735.3A patent/EP2961533B1/en active Active
  • 2014-02-28 CN CN201480011137.5A patent/CN105121023B/zh not_active Expired - Fee Related
  • 2014-02-28 BR BR112015020572-0A patent/BR112015020572B1/pt active IP Right Grant
• 2015
  • 2015-08-14 US US14/826,772 patent/US10406529B2/en active Active
• 2018
  • 2018-12-26 JP JP2018243480A patent/JP6720285B2/ja not_active Expired - Fee Related

Patent Citations (6)

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