WO2020220587A1 - Dispositif et procédé de mélange et de conditionnement forcé coopératif pour fluide - Google Patents

Dispositif et procédé de mélange et de conditionnement forcé coopératif pour fluide Download PDF

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Publication number
WO2020220587A1
WO2020220587A1 PCT/CN2019/109887 CN2019109887W WO2020220587A1 WO 2020220587 A1 WO2020220587 A1 WO 2020220587A1 CN 2019109887 W CN2019109887 W CN 2019109887W WO 2020220587 A1 WO2020220587 A1 WO 2020220587A1
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WIPO (PCT)
Prior art keywords
cylinder
slurry
cross
flow
pipe
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Application number
PCT/CN2019/109887
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English (en)
Chinese (zh)
Inventor
张海军
刘炯天
闫小康
王利军
刘清侠
王永田
张春泉
李丹龙
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中国矿业大学
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Application filed by 中国矿业大学 filed Critical 中国矿业大学
Publication of WO2020220587A1 publication Critical patent/WO2020220587A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

Definitions

  • the invention relates to a fluid cooperative forced mixing and conditioning device and method, and is particularly suitable for a fluid cooperative forced mixing and conditioning device and method used for surface modification of fine mineral particles and mixing and dispersion of solid-liquid systems and liquid-liquid systems.
  • the surface modification of fine mineral particles or coal particles is the basic prerequisite and guarantee for achieving high-efficiency mineralization and separation.
  • mechanical mixing is mainly used to pretreat the slurry and medicament, that is, the particles and medicaments are realized under the stirring action of the stirring impeller.
  • traditional mechanical agitation is mainly based on the dispersion and mixing of particles and medicaments, and there are deficiencies in enhancing the spreading and adsorption of medicaments on the surface of particles, especially in promoting the surface modification of fine particles. Therefore, it is necessary to develop more efficient surface modification technologies for fine mineral particles or coal particles.
  • the fluid cooperative forced mixing and tempering device of the present invention includes a vertical structure cylinder, a cross-flow and impinging flow generation system and a slurry circulation system arranged outside the cylinder;
  • the vertical cylinder includes a vertically arranged cylinder, the top of the cylinder is provided with a trapezoidal frustum, a plurality of annular partitions are arranged inside the cylinder, the bottom of the trapezoidal frustum is connected to the inside of the cylinder, and the top of the trapezoidal frustum is provided
  • a slurry discharge pipe arranged vertically upwards.
  • the side wall of the slurry discharge pipe is equipped with a circulating slurry discharge pipe. Circulating slurry discharge pipe, a slurry inlet pipe is arranged tangentially below the cylinder side wall;
  • the slurry circulation system includes a circulation pump and an annular slurry distribution ring arranged outside the cylinder, wherein the inlet of the circulation pump is connected with the outlet of the circulating slurry discharge pipe and the outlet of the pre-circulating slurry discharge pipe, and the pre-circulating slurry is discharged There is an electric valve between the feed pipe and the inlet of the circulating pump, and the outlet of the circulating pump is connected with the inlet of the slurry distribution ring;
  • the cross-flow and impinging stream generation system includes a plurality of slurry distribution pipes arranged in an annular slurry distribution ring, which are respectively perpendicular to the cylinder, and the bottom of the slurry distribution pipe communicates with the interior of the slurry distribution ring and the top is sealed. All the slurry distribution pipes Multiple impact tubes and multiple cross-flow tubes are alternately arranged between the cylinder and the cylinder.
  • the ring-shaped partition is a circular partition that matches the inside of the cylinder.
  • the center of the partition is provided with a circular hole with an opening rate of 20% to 30%.
  • An annular partition is provided at the waist of the cylinder.
  • the cylinder is divided into upper and lower cavities, and an annular partition is arranged between the cylinder and the trapezoidal frustum.
  • the number of slurry distribution pipes is an even number, and they are evenly arranged on the outside of the cylinder; the impinging pipe and the cross-flow pipe are arranged at intervals, and the impinging pipe is a jet structure; the adjacent cross-flow pipes are connected in opposite directions to the cylinder.
  • the impact tube and the cross flow tube are arranged horizontally, the impact tube is connected to the cylinder in the radial direction, that is, the angle with the outer wall of the cylinder is 90 degrees, and the cross flow tube is connected to the cylinder in the tangential direction, that is, the angle with the outer wall of the cylinder is 0 degrees, the angle between the impact tube and the plane of the cross-flow tube is 0 degrees, and the distance between the impact tube and the cross-flow tube is 0.5 to 1.5 times the inner diameter of the cylinder.
  • a method for compulsory mixing and conditioning of fluids the steps are as follows:
  • the pulp and medicament enter the pulp distribution ring of the pulp circulation system through the pre-circulation pulp outlet at the bottom of the cylinder under the suction action of the circulating pump;
  • the slurry and reagent Under the action of pressure, the slurry and reagent enter multiple slurry distribution pipes and are sprayed into the cylinder through the impact pipe and the cross-flow pipe respectively;
  • the slurry and medicament sprayed into the cylinder through the impact tube and the cross flow tube form a high-speed impact flow and a forced shear cross flow in the cylinder to achieve the full mixing and dispersion of the particles and the medicament in the slurry in the cylinder, and effectively strengthen the medicament Adsorption on the particle surface;
  • the feeding pressure of the cylindrical slurry and medicament from the inlet A of the feeding pipe is 0.20 ⁇ 0.25MPa; the pressure of the slurry distribution ring entering the slurry circulation system under the suction of the circulating pump is 0.15 ⁇ 0.20MPa.
  • the slurry ejected from the impact tube arranged in the radial direction of the cylinder produces a frontal impact to produce a high-speed impact stream.
  • the tangentially arranged upper and lower layers of the cylinder cut into the cross-flow pipe with opposite cutting directions between the clockwise slurry and the counterclockwise slurry. Produce shear cross flow.
  • the agent is a flotation agent, such as a collector agent, including diesel oil and kerosene, and a foaming agent, including terpineol.
  • the device has a simple structure, no mechanical stirring mechanism in the cylinder, and uses a high-speed jet method to generate a strong impinging flow in the cylinder.
  • the tangential cross-flow method generates a rotating shear cross-flow in the cylinder body in opposite directions.
  • the annular baffle in the cylinder and the guide baffle at the conical discharge end reduce the cross-sectional area of the slurry flow channel in the cylinder, increase the pressure of the slurry in the cylinder, and achieve the purpose of increasing the energy density in the mixing and tempering device, and further strengthen
  • the energy density in the mixing and conditioning device improves the energy utilization efficiency. It is more conducive to the efficient mixing and dispersion of the particles and the medicament in the cylinder, as well as the forced scrubbing of the particle surface to strengthen the medicament in the particles. Adsorption on the surface, thereby realizing the efficient modification of the particle surface.
  • the present invention proposes to adopt the method of fluid strengthening, that is, through the implementation of high-speed jet impinging stream and rotating shear cross-flow, the efficient mixing and dispersion of particles and medicament are strengthened, and the forced scrubbing of the particle surface, Strengthen the adsorption of the agent on the surface of the particles and realize the high-efficiency modification of the surface of the particles to meet the needs of the subsequent flotation process of fine mineral particles (or coal particles).
  • Fig. 1 is a schematic diagram of the structure of the fluid cooperative forced mixing and conditioning device of the present invention.
  • the fluid cooperative forced mixing and tempering device of the present invention includes a vertical structure cylinder, a cross-flow and impinging flow generation system and a slurry circulation system arranged outside the cylinder;
  • the vertical cylinder includes a vertical cylinder 10, the top of the cylinder 10 is provided with a trapezoidal frustum 9, and the inside of the cylinder 10 is provided with a plurality of annular partitions 11, and the annular partitions 11 are connected to the cylinder 10.
  • the inner matching circular baffle, the center of the baffle is provided with a circular hole with an opening rate of 20% to 30%, and an annular baffle 11 is provided at the inner waist of the cylinder 10 to divide the cylinder 10 into upper and lower parts. There are two cavities.
  • An annular partition 11 is provided between the cylinder 10 and the trapezoidal frustum 9.
  • the bottom of the trapezoidal frustum 9 communicates with the inside of the cylinder 10, and the top of the trapezoidal frustum 9 is provided with a slurry discharge arranged vertically upwards.
  • a slurry outlet pipe 5 a slurry inlet pipe 13 is provided tangentially below the side wall of the cylinder 10;
  • the slurry circulation system includes a circulating pump 14 and an annular slurry distribution ring 4 arranged outside the cylinder 10, wherein the inlet of the circulating pump 14 is respectively corresponding to the outlet of the circulating slurry outlet pipe 1 and the pre-circulating slurry outlet pipe 5.
  • an electric valve 6 is provided between the pre-circulation slurry discharge pipe 5 and the inlet of the circulating pump 14, and the outlet of the circulating pump 14 is connected with the inlet of the slurry distribution ring 4;
  • the cross-flow and impinging flow generation system includes a plurality of slurry distribution pipes 12 arranged on the annular slurry distribution ring 4, which are respectively perpendicular and parallel to the cylinder 10.
  • the bottom of the slurry distribution pipe 12 is communicated with the interior of the slurry distribution ring 4, and the top is sealed, All the slurry distribution pipes 12 and the cylinder 10 are alternately provided with multiple impact pipes 2 and multiple cross-flow pipes 3.
  • the number of slurry distribution pipes 12 is an even number, and they are evenly arranged on the outside of the cylinder 10; the impact pipe 2 It is arranged spaced apart from the cross flow tube 3, and the impact tube 2 is a jet structure; the adjacent cross flow tubes 3 are connected to the cylinder 10 in the opposite direction, and the impact tubes 2 and the cross flow tubes 3 are arranged horizontally, and the impact tube 2 is connected to the cylinder 10 in the radial direction, that is, the angle with the outer wall of the cylinder 10 is 90 degrees, and the cross-flow pipe 3 is connected to the cylinder 10 in the tangential direction, that is, the angle with the outer wall of the cylinder 10 is 0 degrees, and hits the tube 2
  • the included angle with the plane of the cross-flow tube 3 is 0 degrees, and the distance between the impact tube 2 and the cross-flow tube 3 is 0.5 to 1.5 times the inner diameter of the cylinder 10.
  • the pulp and reagent are fed into the bottom of the cylinder 10 from the inlet A of the feed pipe 13, and the feed pressure is 0.20 ⁇ 0.25MPa.
  • the reagent is a flotation reagent, such as a collector, including diesel, kerosene, and foaming agent. , Including pinitol oil, open the electric valve 6 on the pipeline of the outlet 5 of the pre-circulated pulp at the bottom of the cylinder 10;
  • the pulp and medicament enter the pulp distribution ring 4 of the pulp circulation system through the pre-circulation pulp outlet 5 at the bottom of the cylinder 10 under the suction action of the circulation pump 14, and the pressure of the pulp distribution ring 4 entering the pulp circulation system is 0.15-0.20 MPa;
  • the slurry and the medicament enter the multiple slurry distribution pipes 12 and are respectively sprayed into the cylinder 10 through the impact pipe 2 and the cross-flow pipe 3;
  • the slurry and medicament sprayed into the cylinder 10 through the impact tube 2 and the cross flow tube 3 form a high-speed impact flow and a forced shear cross flow in the cylinder, so that the particles in the slurry and the medicament in the cylinder 10 are fully mixed and dispersed , Effectively strengthen the adsorption of medicament on the particle surface; the slurry ejected by the impact tube 2 arranged radially and symmetrically of the cylinder 10 produces a high-speed impinging stream due to a frontal impact, and the upper and lower layers of the cylinder 10 tangentially cut into the cross-flow tube 3 with opposite directions. Shear cross-flow between the injected clockwise and counterclockwise ore slurry;

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)

Abstract

L'invention concerne un dispositif et un procédé de mélange et de conditionnement forcé coopératif pour fluide, qui sont appropriés pour la modification de surface de particules minérales fines, et le mélange et la dispersion d'un système solide-liquide et d'un système liquide-liquide. Le dispositif comprend un corps de cylindre vertical, un système de génération d'écoulement transversal et de courant incident, et un système de circulation de pulpe de minerai. De la pulpe de minerai et un agent sont introduits dans le fond d'un cylindre (10) à partir d'un tuyau d'alimentation en pulpe de minerai (13), entrent, par l'intermédiaire d'un tuyau d'évacuation de pulpe de minerai de pré-circulation (5) et d'un tuyau d'évacuation de pulpe de minerai en circulation (1) au sommet d'un cône, le système de circulation de la pulpe de minerai sous l'action d'aspiration d'une pompe de circulation (14), et sont introduits dans le corps de cylindre vertical au moyen du système de génération d'écoulement transversal et de courant incident afin de former un courant incident à grande vitesse et un écoulement transversal de cisaillement forcé dans le corps de cylindre vertical.
PCT/CN2019/109887 2019-04-29 2019-10-08 Dispositif et procédé de mélange et de conditionnement forcé coopératif pour fluide WO2020220587A1 (fr)

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CN201910358025.1 2019-04-29
CN201910358025.1A CN109925908B (zh) 2019-04-29 2019-04-29 一种流体协同强制混合调质装置及方法

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WO2020220587A1 true WO2020220587A1 (fr) 2020-11-05

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Publication number Priority date Publication date Assignee Title
CN109925908B (zh) * 2019-04-29 2023-10-03 中国矿业大学 一种流体协同强制混合调质装置及方法
CN112007535B (zh) * 2020-09-10 2022-03-11 南京林业大学 一种在静电场作用下的撞击流固液在线混合装置
CN114713554B (zh) * 2022-03-24 2024-03-12 中建材玻璃新材料研究院集团有限公司 一种非金属矿用高温热压泵酸洗装置

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WO2003043723A1 (fr) * 2001-11-23 2003-05-30 Metso Paper, Inc. Procede et appareil pour melanger une matiere pulverulente a un liquide
CN2585686Y (zh) * 2002-06-25 2003-11-12 王文华 一种可调式塔板循环乳化器及采用该乳化器的乳化装置
CN105363380A (zh) * 2015-10-27 2016-03-02 中国矿业大学 一种基于射流混合的外循环式矿浆预处理装置及方法
CN107081221A (zh) * 2017-05-04 2017-08-22 武汉工程大学 一种多段式雾化给药装备
CN109925908A (zh) * 2019-04-29 2019-06-25 中国矿业大学 一种流体协同强制混合调质装置及方法

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US3502445A (en) * 1966-11-02 1970-03-24 Union Oil Co Apparatus for mixing fluids in concurrent downflow relationship
CN2448440Y (zh) * 2000-09-28 2001-09-19 中国石油化工集团公司 旋流式冷氢箱
CN107570696B (zh) * 2017-07-10 2019-08-09 向勇 金属粉末混合装置及其方法、高通量金属合金制备系统
CN209865796U (zh) * 2019-04-29 2019-12-31 中国矿业大学 一种流体协同强制混合调质装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003043723A1 (fr) * 2001-11-23 2003-05-30 Metso Paper, Inc. Procede et appareil pour melanger une matiere pulverulente a un liquide
CN2585686Y (zh) * 2002-06-25 2003-11-12 王文华 一种可调式塔板循环乳化器及采用该乳化器的乳化装置
CN105363380A (zh) * 2015-10-27 2016-03-02 中国矿业大学 一种基于射流混合的外循环式矿浆预处理装置及方法
CN107081221A (zh) * 2017-05-04 2017-08-22 武汉工程大学 一种多段式雾化给药装备
CN109925908A (zh) * 2019-04-29 2019-06-25 中国矿业大学 一种流体协同强制混合调质装置及方法

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