EP1118386A1 - Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides - Google Patents

Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides Download PDF

Info

Publication number
EP1118386A1
EP1118386A1 EP00830031A EP00830031A EP1118386A1 EP 1118386 A1 EP1118386 A1 EP 1118386A1 EP 00830031 A EP00830031 A EP 00830031A EP 00830031 A EP00830031 A EP 00830031A EP 1118386 A1 EP1118386 A1 EP 1118386A1
Authority
EP
European Patent Office
Prior art keywords
container
finely
liquids
milling
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00830031A
Other languages
German (de)
English (en)
Inventor
Roberto Saponaro
Mario Ughetti
Celestino Ronchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MIT Srl
Original Assignee
MIT Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MIT Srl filed Critical MIT Srl
Priority to EP00830031A priority Critical patent/EP1118386A1/fr
Publication of EP1118386A1 publication Critical patent/EP1118386A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • 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

Definitions

  • Apparatus for suspending solids in liquids are taught in the prior art, in particular in the field of production of suspended organic and inorganic pigments.
  • These apparatus are usually discontinuously operated and, very briefly, comprise a container for containing the substances and components, in which the dissolving is done, very often in vacuum conditions, by mechanical stirring groups as well as special indented rotors set in rotation.
  • the degree of suspension influences numerous properties, such as chromatic characteristics, rheological flow characteristics, behavioural characteristics and chemical affinity in mixtures with other products; not to forget stability over a period of time and degree of gloss or matt finish.
  • the main aim of the present invention is to obviate the limitations and drawbacks in the prior art in order to obtain high-concentrate suspensions of solids in liquids, characterised by great stability and an extremely homogeneous distribution, including from the point of view of granulometry, of the solid in the liquid carrier.
  • Another main aim is to obtain a liquid/liquid dispersion which is perfectly homogenous, free of microfoam and stable over a period of time.
  • Advantages of the invention are that it does not require great use of surface-active agents, it achieves an excellent separation of solid powder aggregates and does not lead to a high wastage of mechanical energy transmitted via rotating organs (rotors) which, in known applications, create high chemical-physical stress in the suspension and resulting solution.
  • a further advantage of the invention is that the processes of grinding or milling are much quicker.
  • 1 denotes in its entirety a container which is destined to contain a fluid mass constituted by a mixture of a solid suspended in a liquid.
  • the container 1 is the shell comprising a lower refining chamber 10 and an upper chamber 11 of a ball mill 3 used in particular for refining or fine grinding of silk-screening glazes and, more in general, for the suspension of solids in liquids.
  • the lower refining chamber 10 contains the milling balls, which balls grind when moved by the mechanical rotating action of the shaft 12, which shaft 12 is provided with rotors.
  • a similar apparatus to the above-described one is constituted by the mill 3' of figure 3, in which the balls are contained in a basket 14 which is solidly constrained to a lid covering the container 1 which will contain a fluid mass constituted by a mixture of a solid in a liquid.
  • Figure 4 schematically represents a mixer the function of which is solely that of causing an already at least quite finely-ground solid to disperse without rendering the solid even more finely-ground.
  • the dispersion of the solid is achieved by a mechanical mixing action on the part of a rotor 5 which, immersed in the mass, is rapidly rotated.
  • All of the illustrated embodiments exhibit a container 1 to which lateral walls (which have an overall axial-symmetric conformation) two ultrasonic generators 2, in the form of plates, are applied at peripheral positions.
  • These ultrasonic generators 2 have the specific function of transmitting energy at ultrasonic frequency to the mass contained in the container 1.
  • the ultrasonically-emitted energy which can be modulated and regulated according to needs, exerts a direct dispersant action on the solids in the liquid, exploiting the ability of this form of energy to propagate easily in a liquid carrier.
  • the transmission of ultrasonic energy preferably in a frequency range comprised between 5 and 70 kHz, has the effect of increasing the contact surface between solid particles and the liquid, favouring wetting.
  • ultrasound which is preferably done at constant frequencies, also activates and optimizes the process of homogenization of the surface-active agents and/or dispersants, This permits production of mixtures with higher concentrations of suspended solids with smaller quantities of surface-active agents, with a consequent reduction in the formation of microfoam, which leads to suspension instability.
  • solids for example, mineral-rich, synthetic, organic and inorganic pigments, colouring earths
  • solids can be dispersed in liquids and produce a mixture characterised by a high concentration of solid and a good level of chemical-physical stability over time, leading to ease of use.
  • a Further advantage of the invention is constituted by an improvement in the chromatic quality of the products.
  • All of the described realisations employ an improved process for finely milling and/or finely dispersing solids in liquids or liquids in liquids, which is essentially characterised by the fact that energy is transmitted in the form of ultrasonic waves to the mass of solids and liquids during the milling of the former and also during the dispersion of one in the other, or of liquids in liquids.
EP00830031A 2000-01-20 2000-01-20 Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides Withdrawn EP1118386A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00830031A EP1118386A1 (fr) 2000-01-20 2000-01-20 Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00830031A EP1118386A1 (fr) 2000-01-20 2000-01-20 Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides

Publications (1)

Publication Number Publication Date
EP1118386A1 true EP1118386A1 (fr) 2001-07-25

Family

ID=8175137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00830031A Withdrawn EP1118386A1 (fr) 2000-01-20 2000-01-20 Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides

Country Status (1)

Country Link
EP (1) EP1118386A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103521763A (zh) * 2013-11-01 2014-01-22 赣州中瑞材料科技有限公司 一种微波辅助球磨制备超细钨基合金粉的工艺
CN103785511A (zh) * 2014-03-04 2014-05-14 湖南大学 一种制备高性能纳米粉末的微波超声联合辅助球磨装置和工艺
CN109465462A (zh) * 2018-12-17 2019-03-15 河源富马硬质合金股份有限公司 一种新的球磨方式制备硬质合金
CN114029129A (zh) * 2021-11-13 2022-02-11 淄博大力矿山机械有限公司 一种建材制粉机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1254001B (de) * 1964-04-07 1967-11-09 Draiswerke Ges Mit Beschraenkt Ruehrwerksmuehle
DE1507528B1 (de) * 1966-12-06 1970-09-24 Fryma Masch Ag Vorrichtung zum Verarbeiten und Aufbereiten fliessfaehiger Produkte
EP0065188A2 (fr) * 1981-05-14 1982-11-24 BASF Aktiengesellschaft Dispositif de séparation pour la séparation des corps broyants et de la suspension broyée dans un broyeur humide
US4964576A (en) * 1988-04-04 1990-10-23 Datta Rabinder S Method and apparatus for mineral matter separation
US5279463A (en) * 1992-08-26 1994-01-18 Holl Richard A Methods and apparatus for treating materials in liquids
EP0686428A1 (fr) * 1994-06-10 1995-12-13 Eastman Kodak Company Microbroyeur comportant des éléments de broyage et son procédé d'utilisation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1254001B (de) * 1964-04-07 1967-11-09 Draiswerke Ges Mit Beschraenkt Ruehrwerksmuehle
DE1507528B1 (de) * 1966-12-06 1970-09-24 Fryma Masch Ag Vorrichtung zum Verarbeiten und Aufbereiten fliessfaehiger Produkte
EP0065188A2 (fr) * 1981-05-14 1982-11-24 BASF Aktiengesellschaft Dispositif de séparation pour la séparation des corps broyants et de la suspension broyée dans un broyeur humide
US4964576A (en) * 1988-04-04 1990-10-23 Datta Rabinder S Method and apparatus for mineral matter separation
US5279463A (en) * 1992-08-26 1994-01-18 Holl Richard A Methods and apparatus for treating materials in liquids
EP0686428A1 (fr) * 1994-06-10 1995-12-13 Eastman Kodak Company Microbroyeur comportant des éléments de broyage et son procédé d'utilisation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103521763A (zh) * 2013-11-01 2014-01-22 赣州中瑞材料科技有限公司 一种微波辅助球磨制备超细钨基合金粉的工艺
CN103785511A (zh) * 2014-03-04 2014-05-14 湖南大学 一种制备高性能纳米粉末的微波超声联合辅助球磨装置和工艺
CN103785511B (zh) * 2014-03-04 2016-02-24 湖南大学 一种制备高性能纳米粉末的微波超声联合辅助球磨装置和工艺
CN109465462A (zh) * 2018-12-17 2019-03-15 河源富马硬质合金股份有限公司 一种新的球磨方式制备硬质合金
CN114029129A (zh) * 2021-11-13 2022-02-11 淄博大力矿山机械有限公司 一种建材制粉机

Similar Documents

Publication Publication Date Title
US3638917A (en) Method and apparatus for continuously dispersing materials
US3756570A (en) Apparatus for continuous dispersion and homogenization of predominantly viscous substances
CZ290010B6 (cs) Mobilní zařízení pro přípravu vodných tekutých barev z práškových složek a vody a způsob výroby vodných tekutých barev
CN208340565U (zh) 一种固液混合装置
JP4174000B2 (ja) 分散装置
US3944144A (en) Method and apparatus for dispersing suspensions
JPH11501573A (ja) 分散装置および分散方法
EP1118386A1 (fr) Appareil amélioré pour le broyage fin et/ou la suspension fine de substances dans des liquides
JPS57127431A (en) Vacuum mixing and defoaming machine
JP2000237563A (ja) 連続式分散装置
CN107998930A (zh) 一种无机化学实验用物料混合装置
KR101196332B1 (ko) 혼련기
JP2002528258A (ja) 分散装置
JPH06312124A (ja) 流体の混合分散機
JP2010005540A (ja) 湿式分散または粉砕方法及びこれに用いる湿式媒体分散機
CN1380365A (zh) 涂料生产方法及设备
CN209714855U (zh) 有机硅改性的水性表面处理剂搅拌研磨装置
CN207507285U (zh) 一种高速分散机
CN213669469U (zh) 一种化妆品面霜混合胶体研磨机
KR20200042833A (ko) 교반 효과를 증대시킬 수 있는 교반밀
CN218393926U (zh) 一种中空氮化硅陶瓷球研磨装置
CN108554344A (zh) 一种反应釜
CN214514017U (zh) 一种分层油漆充分混合的油漆搅拌机
CN109317003A (zh) 一种涂料生产用搅拌装置
FI91602B (fi) Menetelmä pigmenttien tai sentapaisten hienojakoisten kiinteiden hiukkasten dispergoimiseksi väliaineeseen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20011105

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20031027

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040507