CN114713382A - A strong mixing shearing device and method suitable for fine-grained mineral flotation - Google Patents

A strong mixing shearing device and method suitable for fine-grained mineral flotation Download PDF

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CN114713382A
CN114713382A CN202111403460.5A CN202111403460A CN114713382A CN 114713382 A CN114713382 A CN 114713382A CN 202111403460 A CN202111403460 A CN 202111403460A CN 114713382 A CN114713382 A CN 114713382A
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pulp
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邢耀文
桂夏辉
丁世豪
曹亦俊
刘炯天
徐梦迪
夏阳超
王磊
郭旺
李永改
王钰赛
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China University of Mining and Technology CUMT
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/14Flotation machines
    • B03D1/16Flotation machines with impellers; Subaeration machines
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Abstract

本发明涉及一种适用细粒矿物浮选的强力混合剪切装置及方法,属于矿物浮选搅拌调浆设备技术领域,解决了现有技术中搅拌调浆装置结构单一难以满足微细粒矿物与浮选药剂间的高分散和高碰撞要求的问题。本发明包括调浆桶,所述调浆桶自下而上依次为一段强力混合区、二段强力剪切区和三段强力输送区,矿浆由所述调浆桶底部进入所述一段强力混合区,经过所述二段强力剪切区后从所述三段强力输送区输出。本发明的强力混合剪切装置搅拌效果好,调浆质量高。

Figure 202111403460

The invention relates to a strong mixing and shearing device and a method suitable for fine-grained mineral flotation, belonging to the technical field of mineral flotation stirring and pulping equipment, and solving the problem that the single structure of the stirring and pulping device in the prior art is difficult to meet the needs of fine-grained minerals and flotation. The problem of high dispersion and high collision requirements between selected agents. The present invention includes a sizing bucket, the sizing bucket is sequentially composed of a first-stage strong mixing zone, a second-stage strong shearing zone, and a third-stage strong conveying zone from bottom to top, and the pulp enters the first-stage strong mixing zone from the bottom of the sizing bucket After passing through the second-stage strong shearing zone, it is output from the third-stage strong conveying zone. The strong mixing and shearing device of the invention has good stirring effect and high pulp mixing quality.

Figure 202111403460

Description

一种适用细粒矿物浮选的强力混合剪切装置及方法A powerful mixing shearing device and method suitable for fine-grained mineral flotation

技术领域technical field

本发明涉及矿物浮选搅拌调浆设备技术领域,尤其涉及一种适用细粒矿物浮选的强力混合剪切装置及方法。The invention relates to the technical field of mineral flotation stirring and pulping equipment, in particular to a strong mixing shearing device and method suitable for fine-grained mineral flotation.

背景技术Background technique

浮选是针对矿物及煤炭资源最经济有效的分选方法,尤其对细粒与微细粒等低品质战略性矿产资源中有价组分的规模化回收具有突出贡献。浮选过程是根据颗粒的表界面性质进行的,表面疏水性好的颗粒易与气泡附着作为精矿上浮,而亲水的脉石颗粒则留在矿浆中作为尾矿排出。随着机械化开采与重介质选矿工艺的普遍应用,入浮细泥量多、微细颗粒与连生体含量大、有效分选范围窄等问题日渐突显,对矿物浮选过程提出了更高的要求。部分选煤厂浮选设备与工艺难以应对矿产资源的恶化,被迫通过牺牲处理量来保证浮选指标合格,造成大量优质矿产资源损失,因此开发高性能浮选设备是解决煤炭清洁利用难题的关键举措。Flotation is the most economical and effective separation method for minerals and coal resources, especially for the large-scale recovery of valuable components in low-quality strategic mineral resources such as fine particles and fine particles. The flotation process is carried out according to the surface and interface properties of the particles. The particles with good surface hydrophobicity are easily attached to the air bubbles and float up as concentrates, while the hydrophilic gangue particles remain in the slurry and are discharged as tailings. With the widespread application of mechanized mining and heavy-medium beneficiation processes, problems such as a large amount of flotation fine mud, a large content of fine particles and conjoined organisms, and a narrow effective separation range have become increasingly prominent, which puts forward higher requirements for the mineral flotation process. The flotation equipment and process of some coal preparation plants are difficult to cope with the deterioration of mineral resources, and they are forced to sacrifice the processing capacity to ensure that the flotation index is qualified, resulting in the loss of a large number of high-quality mineral resources. Therefore, the development of high-performance flotation equipment is to solve the problem of clean coal utilization. key move.

调浆是浮选工艺的重要环节之一,其主要目的是降低矿物颗粒表面细泥含量,提高矿物颗粒与药剂的分散、碰撞与粘附,增大不同矿物颗粒间的表界面性质差异,促进浮选高效分离。因此高效调浆是细粒、微细粒矿物浮选分离的先决条件。由于微细粒矿物同时具有低密度和高比表面积的性质特点,在浮选过程中易黏附在目的矿物颗粒表面,降低目的矿物颗粒与浮选药剂间的相互作用,对目的矿物表面性质产生影响。传统以单一结构设计为主的搅拌调浆装置与方法难以满足微细粒矿物与浮选药剂间所需的高分散与高碰撞的技术要求,因此一种适用细粒、微细粒矿物浮选的强力混合剪切装置亟需开发研究。Slurry mixing is one of the important links in the flotation process. Its main purpose is to reduce the content of fine mud on the surface of mineral particles, improve the dispersion, collision and adhesion of mineral particles and chemicals, increase the surface and interface properties between different mineral particles, and promote Flotation for efficient separation. Therefore, high-efficiency slurry mixing is a prerequisite for the flotation separation of fine-grained and fine-grained minerals. Since the fine-grained minerals have the characteristics of low density and high specific surface area at the same time, they are easy to adhere to the surface of the target mineral particles during the flotation process, reducing the interaction between the target mineral particles and the flotation reagent, and affecting the surface properties of the target mineral. The traditional stirring and slurry mixing device and method mainly based on a single structure design cannot meet the technical requirements of high dispersion and high collision between fine-grained minerals and flotation reagents. The mixing and shearing device is in urgent need of development and research.

发明内容SUMMARY OF THE INVENTION

鉴于上述的分析,本发明实施例旨在提供一种适用细粒矿物浮选的强力混合剪切装置及方法,用以解决现有搅拌调浆装置结构单一难以满足微细粒矿物与浮选药剂间的高分散和高碰撞要求的问题。In view of the above analysis, the embodiments of the present invention aim to provide a strong mixing and shearing device and method suitable for fine-grained mineral flotation, so as to solve the problem that the single structure of the existing stirring and pulping device is difficult to meet the gap between fine-grained minerals and flotation reagents. problems with high dispersion and high collision requirements.

一方面,本发明提供了一种适用细粒矿物浮选的强力混合剪切装置,包括调浆桶,所述调浆桶自下而上依次为一段强力混合区、二段强力剪切区和三段强力输送区,矿浆由所述调浆桶底部进入所述一段强力混合区,经过所述二段强力剪切区后从所述三段强力输送区输出。In one aspect, the present invention provides a strong mixing and shearing device suitable for flotation of fine-grained minerals, comprising a pulping barrel, wherein from bottom to top, the pulping barrel is sequentially composed of a first-stage intensive mixing zone, a second-stage strong shearing zone and Three-stage strong conveying zone, the pulp enters the first-stage strong mixing zone from the bottom of the pulp mixing barrel, and is output from the third-stage strong conveying zone after passing through the second-stage strong shearing zone.

进一步地,所述调浆桶内水平设有环形隔板,所述环形隔板设有两个,两个环形隔板将所述调浆桶自下而上分为三段结构化调浆区,分别为所述一段强力混合区、所述二段强力剪切区和所述三段强力输送区。Further, an annular baffle is arranged horizontally in the pulping barrel, and two annular baffles are arranged, and the two annular baffles divide the pulping barrel into three sections of structured pulping area from bottom to top. , which are the first-stage strong mixing zone, the second-stage strong shearing zone, and the third-stage strong conveying zone.

进一步地,所述调浆桶内还设有锯齿圆盘涡轮剪切器,所述锯齿圆盘涡轮剪切器设有两个,两个所述锯齿圆盘涡轮剪切器分别与两个所述环形隔板齐平设置。Further, there are also sawtooth disk turbo shears in the mixing barrel, and two sawtooth disk turbo shears are provided, and the two sawtooth disk turbo shears are respectively connected with the two serrated disk turbo shears. The annular baffles are flush.

进一步地,所述锯齿圆盘涡轮剪切器与所述环形隔板之间留有间隙。Further, a gap is left between the sawtooth disk turbine shear and the annular baffle.

进一步地,所述调浆桶的内壁安装有挡板,所述挡板竖直设置,且设有多个。Further, a baffle plate is installed on the inner wall of the pulp mixing barrel, and the baffle plate is arranged vertically and is provided with a plurality of baffle plates.

进一步地,还包括动力单元,所述动力单元包括动力传动机构、电机和主轴,所述主轴的一端穿出所述调浆桶通过动力传动机构与所述电机连接,另一端在所述调浆桶内呈悬臂状。Further, it also includes a power unit, the power unit includes a power transmission mechanism, a motor and a main shaft, one end of the main shaft is connected to the motor through the power transmission mechanism, and the other end of the main shaft is connected to the pulp mixing barrel. The barrel is cantilevered.

进一步地,所述一段强力混合区内设有半圆管式圆盘涡轮搅拌器,所述半圆管式圆盘涡轮搅拌器设于所述主轴上。Further, a semi-circular tube type disc turbine agitator is arranged in the first section of intensive mixing zone, and the semi-circle tube type disc turbine agitator is arranged on the main shaft.

进一步地,所述二段强力剪切区内设有半圆管式圆盘涡轮搅拌器,所述半圆管式圆盘涡轮搅拌器设于所述主轴上。Further, a semi-circular tubular disc turbine agitator is arranged in the second-stage strong shearing zone, and the semi-circular tubular disc turbine agitator is arranged on the main shaft.

进一步地,所述三段强力输送区内设有反向斜叶圆盘涡轮搅拌器,所述反向斜叶圆盘涡轮搅拌器设于主轴上。Further, a reverse oblique blade disk turbine agitator is arranged in the three-stage strong conveying area, and the reverse oblique blade disk turbine agitator is arranged on the main shaft.

另一方面,本发明提供了一种适用细粒矿物浮选的强力混合剪切方法,采用上述适用细粒矿物浮选的强力混合剪切装置,步骤包括:On the other hand, the present invention provides a strong mixing and shearing method suitable for fine-grained mineral flotation, using the above-mentioned strong mixing and shearing device suitable for fine-grained mineral flotation, and the steps include:

步骤S1:关闭事故排料管,启动电机;Step S1: close the accident discharge pipe and start the motor;

步骤S2:依次打开矿浆出料管、矿浆入料管和加药管,向调浆桶内注入矿浆和药剂;Step S2: Open the pulp discharge pipe, the pulp feed pipe and the dosing pipe in turn, and inject the pulp and chemicals into the pulp mixing barrel;

步骤S3:一段强力混合区内的矿浆通过调浆桶下层的环形隔板与锯齿圆盘涡轮剪切器进入二段强力剪切区;Step S3: the ore pulp in the first-stage strong mixing zone enters the second-stage strong shearing zone through the annular baffle and the sawtooth disc turbo shear on the lower layer of the pulping barrel;

步骤S4:二段强力剪切区内的矿浆经强化剪切调浆后通过上层环形隔板与锯齿圆盘涡轮剪切器进入三段强力输送区;Step S4: the pulp in the second-stage strong shearing zone is reinforced by shearing and pulping and enters the third-stage strong conveying zone through the upper annular baffle and the sawtooth disc turbo shear;

步骤S5:进入三段强力输送区的矿浆在反向斜叶圆盘涡轮搅拌器的带动下,沿切向出料管顺式排出。Step S5: The ore pulp entering the three-stage strong conveying area is driven by the reverse inclined blade disc turbine agitator, and is discharged along the tangential discharge pipe.

与现有技术相比,本发明至少可实现如下有益效果之一:Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

(1)本发明的强力混合剪切装置具有设备结构层次分明、调浆过程环环相扣、实际应用安全可靠的技术特点,采用的三段结构化设计可以满足调浆过程不同阶段的功能化需要。本发明一段强力混合区采用逆式切向旋流入料与半圆管式圆盘涡轮搅拌器搅拌相结合,提高了矿浆中矿物颗粒与药剂的悬浮分散、碰撞与粘附,有助于矿物表面粘附的细泥剥离,避免了泥化现象对药剂选择性的影响,实现了矿浆与药剂的充分接触;二段强力剪切区中增加的剪切条栅和锯齿圆盘涡轮剪切器,实现了矿浆在径向和轴向的剪切强化,降低了细粒矿物因绕流运动对细泥剥离的不利影响,进一步增强了矿物颗粒与药剂的分散、碰撞与粘附;三段强力输送区通过反向斜叶圆盘涡轮搅拌器与顺式切向出料相结合,实现了对已完成调浆矿浆的快速排出,有助于防止过调浆对后续浮选的不利影响,为低品质矿物材料的精深提质利用提供基础。(1) The strong mixing and shearing device of the present invention has the technical characteristics of clear equipment structure, interlocking process of pulp mixing, safe and reliable practical application, and the adopted three-stage structural design can meet the functionalization of different stages of pulp mixing process. need. The strong mixing zone of the present invention adopts the combination of the reverse tangential swirling material and the stirring of the semi-circular tubular disc turbine agitator, which improves the suspension dispersion, collision and adhesion of the mineral particles and the agent in the pulp, and helps the mineral surface to stick to the surface. The attached fine mud is stripped, which avoids the influence of mudification on the selectivity of the chemical, and realizes the full contact between the slurry and the chemical. The shear strengthening of the slurry in the radial and axial directions reduces the adverse effect of fine-grained minerals on the stripping of fine mud due to the movement of the surrounding flow, and further enhances the dispersion, collision and adhesion of mineral particles and chemicals; three-stage strong conveying area Through the combination of the reverse inclined-blade disc turbine agitator and the cis-tangential discharge, the rapid discharge of the conditioned pulp is realized, which helps to prevent the adverse effect of over-conditioning on the subsequent flotation, and is a good solution for low-quality pulp. The advanced utilization of mineral materials provides the basis.

(2)本发明的强力混合剪切装置采用半圆管式圆盘涡轮搅拌器和反向斜叶圆盘涡轮搅拌器相组合,在满足调浆过程不同阶段的功能化需要的同时降低了搅拌过程能量消耗,提高了调浆效率。相比与普通搅拌调浆装置中旋桨式搅拌器,本发明采用的涡轮搅拌器的循环速率高、剪切强度大,可降低搅拌器磨损与功率消耗。同时配以锯齿圆盘涡轮剪切器可最大程度实现的提高搅拌过程矿浆紊流度,减少了细粒矿物因绕流运动对细泥剥离的不利影响,增强了矿物颗粒与药剂的分散、碰撞与粘附。(2) The strong mixing and shearing device of the present invention adopts a combination of a semi-circular tubular disc turbine agitator and a reverse inclined-blade disc turbine agitator, which reduces the stirring process while meeting the functional requirements of different stages of the slurry mixing process. Energy consumption and improved pulp mixing efficiency. Compared with the propeller-type stirrer in the common stirring and pulping device, the turbine stirrer adopted in the present invention has high circulation rate and high shear strength, and can reduce the wear and power consumption of the stirrer. At the same time, it is equipped with a sawtooth disc turbine shear, which can maximize the turbulence of the slurry during the stirring process, reduce the adverse effect of fine-grained minerals on the stripping of fine mud due to the movement of the surrounding flow, and enhance the dispersion and collision of mineral particles and chemicals. with adhesion.

(3)本发明的强力混合剪切装置采用锯齿圆盘涡轮剪切器、剪切条栅和竖直挡板的组合设计,实现了矿浆在径向和轴向的剪切强化,降低了细粒矿物因绕流运动对细泥剥离的不利影响,进一步增强了矿物颗粒与药剂间的分散、碰撞与粘附。锯齿圆盘涡轮剪切器和剪切条栅表面第二剪切口与边缘交替锯齿卷刃设计,最大限度提高了矿浆紊流度。同时根据入料性质和现场生产需要,可通过改变竖直挡板和剪切条栅的数量来实现对矿浆剪切作用的调控,有助于提高系统灵活性与准确性,避免了因物料性质的非均匀变化对实际生产的影响。(3) The strong mixing shearing device of the present invention adopts the combined design of sawtooth disc turbine shears, shearing grids and vertical baffles, which realizes the shear strengthening of the pulp in the radial and axial directions and reduces the fineness of the pulp. Due to the adverse effect of the surrounding flow motion on the exfoliation of the fine mud, the granular minerals further enhance the dispersion, collision and adhesion between the mineral particles and the agent. The serrated disc turbo shears and the second shearing openings on the surface of the shearing grids are alternately serrated rolling edges design, which maximizes the turbulence of the pulp. At the same time, according to the nature of the incoming material and the needs of on-site production, the shearing effect of the pulp can be adjusted by changing the number of vertical baffles and shear bars, which helps to improve the flexibility and accuracy of the system and avoids the need for material properties. The impact of non-uniform changes on actual production.

(4)本发明的强力混合剪切装置区别于传统一体化结构设计的剪切装置,结构化分区设计以提高搅拌过程能量利用率,更加适用于实际生成过程中物料的非连续变化。一段强力混合区实现了矿浆中矿物颗粒与药剂的悬浮分散、碰撞与粘附,是处理低品质难调浆矿物颗粒的基础环节;二段强力剪切区实现了矿浆在径向和轴向的剪切强化,是处理低品质难调浆矿物颗粒的关键环节;三段强力输送区实现了对已完成调浆矿浆的快速处理,是处理低品质难调浆矿物颗粒的最终环节。同时结构化设计也方便对设备内部关键部件的更换与维修,提高了设备的使用寿命。(4) The strong mixing shearing device of the present invention is different from the shearing device with the traditional integrated structure design. The structural partition design can improve the energy utilization rate of the stirring process, and is more suitable for the discontinuous change of materials in the actual production process. The first-stage strong mixing zone realizes the suspension dispersion, collision and adhesion of mineral particles and chemicals in the pulp, which is the basic link for processing low-quality difficult-to-pulp mineral particles; the second-stage strong shear zone realizes the radial and axial direction of the pulp. Shear strengthening is the key link in the treatment of low-quality refractory mineral particles; the three-stage strong conveying area realizes the rapid processing of the completed sizing pulp, and is the final link in the treatment of low-quality refractory mineral particles. At the same time, the structural design also facilitates the replacement and maintenance of key components inside the equipment, improving the service life of the equipment.

本发明中,上述各技术方案之间还可以相互组合,以实现更多的优选组合方案。本发明的其他特征和优点将在随后的说明书中阐述,并且,部分优点可从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点可通过说明书以及附图中所特别指出的内容中来实现和获得。In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Additional features and advantages of the invention will be set forth in the description which follows, and some of the advantages may become apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by means of particularly pointed out in the description and drawings.

附图说明Description of drawings

附图仅用于示出具体实施例的目的,而并不认为是对本发明的限制,在整个附图中,相同的参考符号表示相同的部件。The drawings are for the purpose of illustrating specific embodiments only and are not to be considered limiting of the invention, and like reference numerals refer to like parts throughout the drawings.

图1为具体实施例的强力混合剪切装置的结构示意图;Fig. 1 is the structural representation of the strong mixing shearing device of a specific embodiment;

图2为具体实施例的剪切条栅竖向分布示意图;2 is a schematic diagram of the vertical distribution of shear bars in a specific embodiment;

图3为具体实施例的剪切条栅水平方向分布示意图;3 is a schematic diagram of the horizontal distribution of shear bars in a specific embodiment;

图4为具体实施例的反向斜叶圆盘涡轮搅拌器结构示意图;4 is a schematic structural diagram of a reverse oblique blade disk turbine agitator of a specific embodiment;

图5为具体实施例的半圆管式圆盘涡轮搅拌器结构示意图;5 is a schematic structural diagram of a semicircular tubular disc turbine agitator according to a specific embodiment;

图6为具体实施例的锯齿圆盘涡轮剪切器结构示意图。FIG. 6 is a schematic structural diagram of a sawtooth disk turbo shear according to a specific embodiment.

附图标记:Reference number:

1-动力传动结构;2-电机;3-轴承支架;4-桶体盖板;5-出料管;6-反向斜叶圆盘涡轮搅拌器;7-主轴;8-竖直挡板;81-第一剪切口;9-剪切条栅;91-剪切板;92-第二剪切口;93-第一剪切齿;10-环形隔板;11-事故排料管;12-半圆管式圆盘涡轮搅拌器;13-锯齿圆盘涡轮剪切器;131-圆盘主体;132-第二剪切齿;133-第三剪切口;14-加药管;15-入料管;1- Power transmission structure; 2- Motor; 3- Bearing bracket; 4- Barrel cover plate; 5- Discharge pipe; 6- Reverse inclined blade disc turbine agitator; 7- Main shaft; 8- Vertical baffle ; 81-first shearing port; 9-shearing grid; 91-shearing plate; 92-second shearing port; 93-first shearing tooth; 10-annular partition plate; 11-accident discharge pipe ; 12-semi-circular tubular disc turbine agitator; 13-serrated disc turbine shear; 131-disc main body; 132-second shear teeth; 133-third shear mouth; 14-dosing pipe; 15-feeding pipe;

100-一段强力混合区;200-二段强力剪切区;300-三段强力输送区。100-first-stage strong mixing zone; 200-second-stage strong shearing zone; 300-third-stage strong conveying zone.

具体实施方式Detailed ways

下面结合附图来具体描述本发明的优选实施例,其中,附图构成本发明一部分,并与本发明的实施例一起用于阐释本发明的原理,并非用于限定本发明的范围。The preferred embodiments of the present invention are specifically described below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention, and together with the embodiments of the present invention, are used to explain the principles of the present invention, but not to limit the scope of the present invention.

在本发明实施例的描述中,需要说明的是,除非另有明确的规定和限定,术语“相连”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接,可以是机械连接,也可以是电连接,可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified and limited, the term "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection , which can be mechanical connection, electrical connection, direct connection, or indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

全文中描述使用的术语“顶部”、“底部”、“在……上方”、“下”和“在……上”是相对于装置的部件的相对位置,例如装置内部的顶部和底部衬底的相对位置。可以理解的是装置是多功能的,与它们在空间中的方位无关。The terms "top," "bottom," "above," "under," and "over" as used throughout the description are relative positions with respect to components of a device, such as top and bottom substrates inside the device relative position. It is understood that the devices are multifunctional regardless of their orientation in space.

实施例1Example 1

本发明的一个具体实施例,如图1所示,公开了一种适用细粒矿物浮选的强力混合剪切装置(以下简称“强力混合剪切装置”),包括调浆桶,调浆桶自下而上依次为一段强力混合区100、二段强力剪切区200和三段强力输送区300,矿浆由调浆桶底部进入一段强力混合区100,经过二段强力剪切区200后从三段强力输送区300输出。细粒矿物优选为煤。A specific embodiment of the present invention, as shown in Figure 1, discloses a strong mixing and shearing device suitable for fine mineral flotation (hereinafter referred to as "strong mixing and shearing device"), including a sizing bucket, a sizing bucket From bottom to top, there are a first-stage strong mixing zone 100, a second-stage strong shearing zone 200, and a third-stage strong conveying zone 300. The pulp enters the first-stage strong mixing zone 100 from the bottom of the mixing barrel, and passes through the second-stage strong shearing zone 200. Three-stage strong conveying area 300 outputs. The fine-grained mineral is preferably coal.

与现有技术相比,本实施例提供的强力混合剪切装置,区别于传统一体化结构设计的剪切装置,结构化分区设计以提高搅拌过程能量利用率,更加适用于实际生成过程中物料的非连续变化;通过结构化分区设计实现了调浆过程能量的功能化转化,增强了调浆过程效率,提高了设备的物料适应性与产品稳定性,避免了因物料性质的非均匀变化对实际生产的影响,尤其适用于高灰细泥含量大的低品质细粒矿物浮选前搅拌调浆。Compared with the prior art, the strong mixing shearing device provided in this embodiment is different from the shearing device with the traditional integrated structure design. The structured partition design can improve the energy utilization rate of the stirring process, and is more suitable for materials in the actual production process. Through the structural partition design, the functional conversion of energy in the pulping process is realized, the efficiency of the pulping process is enhanced, the material adaptability and product stability of the equipment are improved, and the non-uniform change in material properties is avoided. The impact of actual production is especially suitable for mixing and slurry mixing before flotation of low-quality fine-grained minerals with high ash and fine mud content.

如图1所示,调浆桶为圆柱体结构,调浆桶的上端设有桶体盖板4,一是密封调浆桶的桶口,避免矿浆从调浆桶的桶口溢出,二是为动力单元提供安放空间。As shown in Figure 1, the mixing barrel is a cylindrical structure, and the upper end of the mixing barrel is provided with a barrel cover 4. One is to seal the mouth of the mixing barrel to prevent the slurry from overflowing from the mouth of the mixing barrel. Provide space for the power unit.

如图1所述,动力单元包括动力传动机构1、电机2和主轴7,动力传动机构1的一端连接电机2的输出轴,另一端连接主轴7的上端,将电机2的动力传递给主轴7。动力传动机构可以是齿轮传动机构、链轮传动机构或皮带传动机构,优选地,动力传动机构为皮带传动机构。As shown in FIG. 1 , the power unit includes a power transmission mechanism 1 , a motor 2 and a main shaft 7 . One end of the power transmission mechanism 1 is connected to the output shaft of the motor 2 , and the other end is connected to the upper end of the main shaft 7 to transmit the power of the motor 2 to the main shaft 7 . The power transmission mechanism may be a gear transmission mechanism, a sprocket transmission mechanism or a belt transmission mechanism, preferably, the power transmission mechanism is a belt transmission mechanism.

本实施例中,电机2通过皮带传动机构将动力传递给主轴7,与啮合传动相比,皮带传动机构结构简单,制造成本低,安装维护方便,由于皮带富有弹性,可以缓和冲击和振动,使得强力混合剪切装置在调浆过程中运行平稳,降低工作时噪音。In this embodiment, the motor 2 transmits the power to the main shaft 7 through the belt transmission mechanism. Compared with the meshing transmission, the belt transmission mechanism has a simple structure, low manufacturing cost, and convenient installation and maintenance. The strong mixing and shearing device runs smoothly during the pulp mixing process and reduces the noise during operation.

电机2为变频电机,且呈非匀速转动,速度自600r/s~800r/s均匀往复变化形成时间不均匀流场,加强搅拌分散药剂的同时增加能量输配梯度,节省用电。Motor 2 is a variable frequency motor, and rotates at a non-uniform speed. The speed is uniformly reciprocated from 600r/s to 800r/s to form a time-uniform flow field, which strengthens the stirring and dispersing of the medicine and increases the energy transmission and distribution gradient, saving electricity.

为了便于主轴7的安放,如图1所示,动力单元还包括轴承支架3,轴承支架3竖直设于桶体盖板4上,可理解地,桶体盖板4的中间设有通孔,轴承支架3为圆筒结构,在轴承支架3的两端设有轴承,主轴7的上端穿过桶体盖板4上的通孔与轴承支架3内的轴承连接,主轴7的下端位于调浆桶内。In order to facilitate the placement of the main shaft 7 , as shown in FIG. 1 , the power unit further includes a bearing bracket 3 , and the bearing bracket 3 is vertically arranged on the barrel cover 4 . It is understood that a through hole is provided in the middle of the barrel cover 4 , the bearing bracket 3 is a cylindrical structure, and bearings are provided at both ends of the bearing bracket 3. The upper end of the main shaft 7 is connected to the bearing in the bearing bracket 3 through the through hole on the barrel cover 4, and the lower end of the main shaft 7 is located in the adjustment in the pulp barrel.

如图1所示,调浆桶的上端设有出料口,出料口处连接有出料管5,出料管5与调浆桶相切连通,且出料管5的出料方向与主轴7的旋转方向一致,也就是说,出料管5顺式切向出料。需要说明的是,本实施例中所说的顺式是指从出料管5排出的矿浆沿调浆桶的切向且与主轴7旋转方向一致排出,在此结构下,完成搅拌的矿浆顺式从出料管5排出。As shown in Figure 1, the upper end of the mixing barrel is provided with a discharge port, and the discharge port is connected with a discharge pipe 5. The discharge pipe 5 is in tangential communication with the mixing barrel, and the discharge direction of the discharge pipe 5 The rotation direction of the main shaft 7 is the same, that is to say, the discharge pipe 5 discharges the material tangentially. It should be noted that the cis-type mentioned in this embodiment means that the pulp discharged from the discharge pipe 5 is discharged along the tangential direction of the pulp mixing barrel and is consistent with the rotation direction of the main shaft 7. The formula is discharged from the discharge pipe 5.

如图1所示,调浆桶的下端设有入料口,入料口处连接有入料管15,入料管15与调浆桶相切连通,且入料管15的入料方向与主轴7的旋转方向相反,也就是说,入料管15逆式切向入料。需要说明的是,本实施例中所说的逆式是指入料管15的入料方向与主轴7旋转方向相反,矿浆从入料管15沿调浆桶的切向逆着主轴7旋转的方向进入调浆桶内。As shown in Figure 1, the lower end of the mixing barrel is provided with a feeding port, and the feeding port is connected with a feeding pipe 15. The feeding pipe 15 is in tangential communication with the mixing barrel, and the feeding direction of the feeding pipe 15 is the same as that of the feeding pipe 15. The rotation direction of the main shaft 7 is opposite, that is to say, the feed pipe 15 feeds the material counter tangentially. It should be noted that the reverse type mentioned in this embodiment means that the feeding direction of the feeding pipe 15 is opposite to the rotation direction of the main shaft 7, and the slurry rotates from the feeding pipe 15 along the tangential direction of the mixing barrel against the main shaft 7. direction into the mixing barrel.

本实施例中,主轴7穿过桶体盖板4位于调浆桶的中心,主轴7的底端距调浆桶的底部距离为入料管15直径的1/4~3/4,优选地,主轴7的底端距离调浆桶的底部的距离为入料管15直径的1/2。In this embodiment, the main shaft 7 is located in the center of the mixing barrel through the barrel cover 4, and the distance between the bottom end of the main shaft 7 and the bottom of the mixing barrel is 1/4 to 3/4 of the diameter of the feeding pipe 15, preferably , the distance between the bottom end of the main shaft 7 and the bottom of the mixing barrel is 1/2 of the diameter of the feeding pipe 15 .

考虑到在调浆过程中设备可能出现故障,如图1所示,调浆桶的下端设有事故排料口,事故排料口连接有事故排料管11,事故排料管11与调浆桶相切连通,且事故排料管11的排料方向与主轴7的旋转方向相同,也就是说,事故排料管11顺式切向排料。矿浆从事故排料管11沿调浆桶的切向顺着主轴7旋转的方向排出。Considering that the equipment may fail during the mixing process, as shown in Figure 1, the lower end of the mixing barrel is provided with an accident discharge port, and the accident discharge port is connected with an accident discharge pipe 11. The accident discharge pipe 11 and the pulp mixing The barrels are connected tangentially, and the discharge direction of the accident discharge pipe 11 is the same as the rotation direction of the main shaft 7 , that is, the accident discharge pipe 11 discharges material tangentially. The ore pulp is discharged from the accident discharge pipe 11 along the tangential direction of the pulp mixing barrel along the rotation direction of the main shaft 7 .

值得注意的是,如图1所示,出料管5和入料管15位于调浆桶的同一侧,事故排料管11与入料管15位于调浆桶的两侧。It is worth noting that, as shown in Figure 1, the discharge pipe 5 and the feed pipe 15 are located on the same side of the mixing barrel, and the accident discharge pipe 11 and the feeding pipe 15 are located on both sides of the mixing barrel.

如图1所示,调浆桶内水平设有环形隔板10,环形隔板10设有两个,两个环形隔板10将调浆桶自下而上分为三段结构化调浆区,分别为一段强力混合区100、二段强力剪切区200和三段强力输送区300。三段调浆区的高度比例为1:1:1或1:2:1,优选地,一段强力混合区100、二段强力剪切区200和三段强力输送区300的高度之比为1:1:1。As shown in FIG. 1 , there are annular partitions 10 horizontally arranged in the mixing bucket, and two annular partitions 10 are provided, and the two annular partitions 10 divide the mixing bucket into three sections of structured mixing areas from bottom to top. , which are a first-stage strong mixing zone 100 , a second-stage strong shearing zone 200 and a third-stage strong conveying zone 300 . The height ratio of the three-stage pulp mixing zone is 1:1:1 or 1:2:1. Preferably, the height ratio of the first-stage intensive mixing zone 100, the second-stage strong shearing zone 200 and the third-stage intensive conveying zone 300 is 1 :1:1.

本实施例中,一段强力混合区100实现了矿浆中矿物颗粒与药剂的悬浮分散、碰撞与粘附,是处理低品质难调浆矿物颗粒的基础环节;二段强力剪切区200实现了矿浆在径向和轴向的剪切强化,是处理低品质难调浆矿物颗粒的关键环节;三段强力输送区300实现了对已完成调浆矿浆的快速处理,是处理低品质难调浆矿物颗粒的最终环节。In this embodiment, the first-stage strong mixing zone 100 realizes the suspension, dispersion, collision and adhesion of mineral particles and chemicals in the pulp, which is the basic link for processing low-quality and difficult-to-pulp mineral particles; the second-stage strong shear zone 200 realizes the mineral pulp Shear strengthening in the radial and axial directions is the key link in the treatment of low-quality refractory mineral particles; the three-stage strong conveying zone 300 realizes rapid treatment of the completed slurried ore pulp, which is the key to processing low-quality refractory mineral particles. The final link of the pellet.

如图1、图3所示,调浆桶的内部桶壁处安装有挡板8,挡板8竖直设置,挡板8设有多个,多个挡板8沿调浆桶水平界面环形分布,挡板8的数量为4~8个,优选地,挡板8的数量为8个。As shown in Figure 1 and Figure 3, a baffle 8 is installed on the inner barrel wall of the mixing barrel, the baffle 8 is vertically arranged, and there are multiple baffles 8, and the plurality of baffles 8 are annular along the horizontal interface of the mixing barrel. Distribution, the number of baffles 8 is 4-8, preferably, the number of baffles 8 is 8.

为了增强对矿浆的剪切效果,如图1所示,挡板8开设有第一剪切口81,第一剪切口81沿挡板8的长度方向设有多个。可理解地,可以控制挡板8上开设的第一剪切口81的数量来调控对矿浆的剪切效果,第一剪切口81的数量越多,对矿浆的剪切效果越好。In order to enhance the shearing effect on the ore pulp, as shown in FIG. Understandably, the number of the first shearing openings 81 on the baffle plate 8 can be controlled to adjust the shearing effect on the ore pulp. The greater the number of the first shearing openings 81, the better the shearing effect on the ore pulp.

如图1、图5所示,一段强力混合区100内设有半圆管式圆盘涡轮搅拌器12,半圆管式圆盘涡轮搅拌器12设于主轴7上,在电机2的带动下转动。半圆管式圆盘涡轮搅拌器12的直径为调浆桶直径的1/3~2/3,优选地,半圆管式圆盘涡轮搅拌器12的直径为调浆桶直径的1/3。As shown in FIG. 1 and FIG. 5 , a section of intensive mixing zone 100 is provided with a semi-circular tubular disc turbine agitator 12 . The diameter of the semi-circular tubular disc turbine agitator 12 is 1/3 to 2/3 of the diameter of the mixing barrel, preferably, the diameter of the semi-circular tubular disk turbine agitator 12 is 1/3 of the diameter of the mixing bucket.

本实施例中,一段强力混合区100采用逆式切向旋流入料与半圆管式圆盘涡轮搅拌器12搅拌相结合,提高了矿浆中矿物颗粒与药剂间的分散、碰撞与粘附,有助于目的矿物表面粘附的细泥脱除,避免了泥化现象对药剂选择性的影响。In this embodiment, the first section of strong mixing zone 100 adopts the combination of reverse tangential swirling inflow material and semi-circular tubular disc turbine agitator 12 to improve the dispersion, collision and adhesion between mineral particles and chemicals in the slurry, and there are It helps to remove the fine mud adhering to the surface of the target mineral, and avoids the influence of the mudding phenomenon on the selectivity of the agent.

如图1、图2、图5所示,二段强力剪切区200内设有剪切条栅9和半圆管式圆盘涡轮搅拌器12,剪切条栅9在二段强力剪切区200内呈环形均匀分布,通过螺栓固定在环形隔板10上,即剪切条栅9的上下端分别与调浆桶内设置的两个环形隔板10连接。剪切条栅9的数量一般为4~8个,优选地,二段强力剪切区200内设有8个剪切条栅9。值得注意的是,如图3所示,剪切条栅9位于挡板8前,与挡板8对应设置。As shown in Fig. 1, Fig. 2, Fig. 5, the second-stage strong shearing zone 200 is provided with a shearing grid 9 and a semi-circular tubular disc turbine agitator 12, and the shearing grid 9 is in the second-stage strong shearing zone 200 is evenly distributed in a ring shape, and is fixed on the annular partition plate 10 by bolts, that is, the upper and lower ends of the shear bar 9 are respectively connected with the two annular partition plates 10 arranged in the mixing barrel. The number of shear bars 9 is generally 4 to 8. Preferably, there are 8 shear bars 9 in the second-stage strong shear zone 200 . It is worth noting that, as shown in FIG. 3 , the shear bars 9 are located in front of the baffle 8 and are arranged corresponding to the baffle 8 .

进一步地,如图2所示,剪切条栅9包括剪切板91,剪切板91上设有第二剪切口92,第二剪切口92沿剪切板91的长度方向设有多个,剪切板91的两侧设有第一剪切齿93,剪切板91两侧的第一剪切齿93为三角形,剪切板91两侧的第一剪切齿93连接后呈锯齿状,且相邻第一剪切齿93以剪切板91为界面交错弯曲,形成锯齿状卷刃结构。第一剪切齿93的弯曲角度介于30°~60°,优选50°。Further, as shown in FIG. 2 , the shearing grid 9 includes a shearing plate 91 . The shearing plate 91 is provided with a second shearing opening 92 , and the second shearing opening 92 is provided along the length direction of the shearing plate 91 . There are multiple first shearing teeth 93 on both sides of the shearing plate 91 , the first shearing teeth 93 on both sides of the shearing plate 91 are triangular, and the first shearing teeth 93 on both sides of the shearing plate 91 are connected It has a zigzag shape, and the adjacent first shearing teeth 93 are bent alternately with the shearing plate 91 as the interface, forming a zigzag-shaped winding blade structure. The bending angle of the first shearing teeth 93 ranges from 30° to 60°, preferably 50°.

如图1、图5所示,二段强力剪切区200内,半圆管式圆盘涡轮搅拌器12设于主轴7上,在电机2的带动下转动。半圆管式圆盘涡轮搅拌器12的直径为调浆桶直径的1/3~2/3,优选地,半圆管式圆盘涡轮搅拌器12的直径为调浆桶直径的1/3。As shown in FIG. 1 and FIG. 5 , in the second-stage strong shearing zone 200 , the semi-circular tubular disc turbine agitator 12 is arranged on the main shaft 7 and is rotated under the driving of the motor 2 . The diameter of the semi-circular tubular disc turbine agitator 12 is 1/3 to 2/3 of the diameter of the mixing barrel, preferably, the diameter of the semi-circular tubular disk turbine agitator 12 is 1/3 of the diameter of the mixing bucket.

如图1所示,调浆桶内还设有锯齿圆盘涡轮剪切器13,锯齿圆盘涡轮剪切器13设有两个,两个锯齿圆盘涡轮剪切器13分别与两个环形隔板10齐平设置,锯齿圆盘涡轮剪切器13与环形隔板10之间留有间隙。间隙大小为调浆桶直径的1/20~1/15,优选地,锯齿圆盘涡轮剪切器13与环形隔板10之间的间隙为调浆桶的1/20。锯齿圆盘涡轮剪切器13的直径为调浆桶之间的1/3~2/3,优选地,锯齿圆盘涡轮剪切器13的直径为调浆桶之间的1/3。As shown in FIG. 1 , there is also a sawtooth disk turbine shear 13 in the mixing barrel, and two sawtooth disk turbine shears 13 are provided, and the two sawtooth disk turbine shears 13 are respectively connected with two annular The baffle plate 10 is arranged flush, and a gap is left between the sawtooth disk turbine shear 13 and the annular baffle plate 10 . The size of the gap is 1/20-1/15 of the diameter of the pulping barrel, and preferably, the gap between the sawtooth disk turbine shear 13 and the annular partition 10 is 1/20 of the size of the pulping barrel. The diameter of the sawtooth disk turbo shears 13 is 1/3 to 2/3 of the diameter between the sizing buckets, preferably, the diameter of the sawtooth disk turbo shears 13 is 1/3 of the diameter between the sizing buckets.

如图6所示,锯齿圆盘涡轮剪切器13包括圆盘主体131和第二剪切齿132,第二剪切齿132设于圆盘主体131的圆周边缘,且相邻的第二剪切齿132以圆盘主体131为分界面交错弯曲,即相连的第二剪切齿132一个朝向圆盘主体131的上表面弯曲,另一个就朝向圆盘主体131的下表面弯曲。第二剪切齿132的弯曲角度介于15°~75°,优选45°。As shown in FIG. 6 , the sawtooth disc turbo shear 13 includes a disc main body 131 and a second shearing tooth 132. The second shearing tooth 132 is provided on the circumferential edge of the disc main body 131, and the adjacent second shearing teeth 132 The cutting teeth 132 are bent alternately with the disc main body 131 as the interface, that is, one connected second cutting tooth 132 is curved toward the upper surface of the disc main body 131 , and the other is curved toward the lower surface of the disc main body 131 . The bending angle of the second shearing teeth 132 ranges from 15° to 75°, preferably 45°.

值得注意的是,第二剪切齿132弯曲后的曲面为一斜曲面,而非与圆盘主体131相切弯曲,使得第二剪切齿132能够推动矿浆搅拌。It is worth noting that the curved curved surface of the second shearing teeth 132 is an oblique surface, rather than being curved tangentially to the disc body 131 , so that the second shearing teeth 132 can push the pulp to stir.

为了增强锯齿圆盘涡轮剪切器13的剪切效果,如图6所示,锯齿圆盘涡轮剪切器13上还设有第三剪切口133,第三剪切口133围绕圆盘主体131的中心环形分布。优选地,第三剪切口133为长方形口,从第三剪切口133切除的板料垂直焊接在圆盘主体131的底面上,且位于第三剪切口133的与锯齿圆盘涡轮剪切器13转向相反侧,使得矿浆在板料的阻挡下从第三剪切口133穿过。In order to enhance the shearing effect of the sawtooth disk turbo shear 13, as shown in FIG. 6, the sawtooth disk turbo shear 13 is further provided with a third cutting opening 133, and the third cutting opening 133 surrounds the main body of the disk 131 has a central annular distribution. Preferably, the third cutting opening 133 is a rectangular opening, the sheet material cut from the third cutting opening 133 is vertically welded on the bottom surface of the disc main body 131, and is located at the third cutting opening 133 and the sawtooth disc turbine shear The cutter 13 is turned to the opposite side, so that the pulp passes through the third cutting opening 133 under the blocking of the sheet.

本实施例中,锯齿圆盘涡轮剪切器13与剪切条栅9上均开有剪切口且边缘处采用交替设置的锯齿状卷刃结构,可实现矿浆在径向和轴向的剪切强化,最大限度的提高矿浆湍流度。In this embodiment, the sawtooth disk turbo shears 13 and the shearing grids 9 are both provided with cutting openings, and the edges are alternately arranged with a sawtooth-like winding blade structure, which can realize the shearing of the pulp in the radial and axial directions. Cut strengthening to maximize pulp turbulence.

本实施例中,剪切条栅9和锯齿圆盘涡轮剪切器13的组合,实现了矿浆在径向和轴向的剪切强化,降低了细粒矿物因绕流运动对细泥剥离的不利影响,进一步增强了目的矿物与药剂的分散、碰撞与粘附。In this embodiment, the combination of the shear grating 9 and the sawtooth disk turbine shear 13 realizes the shear strengthening of the pulp in the radial and axial directions, and reduces the effect of the fine-grained minerals on the exfoliation of the fine mud due to the movement of the surrounding flow. The adverse effect further enhances the dispersion, collision and adhesion of the target mineral and the agent.

如图1、图4所示,三段强力输送区300内设有反向斜叶圆盘涡轮搅拌器6,反向斜叶圆盘涡轮搅拌器6设于主轴7上,在电机2的带动下转动。反向斜叶圆盘涡轮搅拌器6的直径为调浆桶之间的1/3~2/3,优选地,反向斜叶圆盘涡轮搅拌器6的直径为调浆桶之间的1/3。As shown in Figures 1 and 4, the three-stage strong conveying area 300 is provided with a reverse inclined blade disk turbine agitator 6, and the reverse inclined blade disk turbine agitator 6 is arranged on the main shaft 7, and is driven by the motor 2. turn down. The diameter of the reverse inclined-blade disc turbine agitator 6 is 1/3 to 2/3 of that between the mixing barrels. /3.

本实施例中,三段强力输送区300通过反向斜叶圆盘涡轮搅拌器6与顺式切向出料相结合,实现了对已完成调浆矿浆的快速排出,有助于防止过调浆对后续浮选的不利影响,为低品质矿物材料的精深提质利用提供基础。In this embodiment, the three-stage strong conveying area 300 is combined with the cis tangential discharge through the reverse inclined blade disc turbine agitator 6, so as to realize the rapid discharge of the conditioned pulp, which is helpful to prevent overshooting. The adverse effect of pulp on subsequent flotation provides a basis for the intensive upgrading and utilization of low-quality mineral materials.

需要说明的是,入料管15上连通有加药管14,出料管5、矿浆入料管15和加药管14上设有数控电磁阀门,通过数控电磁阀门控制出料管5、矿浆入料管15和加药管14的开闭。It should be noted that the feeding pipe 15 is connected with the dosing pipe 14, and the discharge pipe 5, the slurry feeding pipe 15 and the dosing pipe 14 are provided with numerical control electromagnetic valves, and the discharge pipe 5 and the pulp are controlled by the numerical control electromagnetic valve. The opening and closing of the feeding tube 15 and the dosing tube 14.

实施例2Example 2

本发明的一个具体实施例,公开了一种适用细粒矿物浮选的强力混合剪切方法(以下简称“强力混合剪切方法”),采用实施例1的强力混合剪切装置,步骤包括:A specific embodiment of the present invention discloses a strong mixing and shearing method suitable for fine-grained mineral flotation (hereinafter referred to as "strong mixing and shearing method"), using the strong mixing and shearing device of Example 1, and the steps include:

步骤S1:关闭事故排料管11,启动电机2。Step S1 : close the accident discharge pipe 11 and start the motor 2 .

搅拌调浆开始前通过数控电磁阀门预先关闭事故排料管11,随后启动电机2;电机2通过动力传动机构1带动主轴7上的反向斜叶圆盘涡轮搅拌器6、半圆管式圆盘涡轮搅拌器12和锯齿圆盘涡轮剪切器13旋转。Before stirring and mixing, the accident discharge pipe 11 is closed in advance through the numerical control electromagnetic valve, and then the motor 2 is started; The turbine agitator 12 and the sawtooth disc turbine shear 13 rotate.

步骤S2:待调浆桶运行稳定后,通过数控电磁阀门依次打开矿浆出料管5、矿浆入料管15和加药管14。矿浆经矿浆入料管15沿切向进入调浆桶底部一段强力混合区100形成旋流,并与旋转的半圆管式圆盘涡轮搅拌器12形成逆流碰撞。矿浆在通过加药管14处时形成负压,加药管14中的捕收剂与起泡剂在压力的作用下自吸进入矿浆,并被高速旋转的半圆管式圆盘涡轮搅拌器12悬浮分散。Step S2: After the slurry mixing barrel runs stably, open the pulp discharge pipe 5, the pulp feed pipe 15 and the dosing pipe 14 in sequence through the numerically controlled electromagnetic valve. The pulp enters a section of strong mixing zone 100 at the bottom of the pulp mixing barrel tangentially through the pulp feeding pipe 15 to form a swirling flow, and forms a countercurrent collision with the rotating semi-circular tubular disc turbine agitator 12 . Negative pressure is formed when the ore slurry passes through the dosing pipe 14, and the collector and foaming agent in the dosing pipe 14 are self-absorbed into the ore slurry under the action of pressure, and are rotated by the high-speed semi-circular tubular disc turbine agitator 12. Suspended dispersion.

其中捕收剂选用煤油、柴油或松油,优选柴油;用量为0.5~4kg/t,优选0.5kg/t;起泡剂选用仲辛醇、甲基异丁基甲醇、甲基戊醇或十二烷基三甲基溴化铵,优选仲辛醇;用量为0.2~2kg/t,优选0.2kg/t。Wherein the collector selects kerosene, diesel oil or pine oil, preferably diesel oil; the dosage is 0.5~4kg/t, preferably 0.5kg/t; the foaming agent selects sec-octanol, methyl isobutyl methanol, methyl amyl alcohol or ten Dialkyltrimethylammonium bromide, preferably sec-octanol; the dosage is 0.2-2kg/t, preferably 0.2kg/t.

一段强力混合区100采用逆式切向旋流入料与半圆管式圆盘涡轮搅拌器12的结构设计,提高了矿浆中矿物颗粒与药剂的悬浮分散、碰撞与粘附,有助于目的矿物表面粘附的微细颗粒剥离,避免了泥化现象对药剂选择性的影响,实现了矿浆与药剂的充分接触,是处理低品质难调浆矿物颗粒的基础环节。The first section of strong mixing zone 100 adopts the structure design of reverse tangential swirling material and semi-circular tubular disc turbine agitator 12, which improves the suspension, dispersion, collision and adhesion of mineral particles and chemicals in the pulp, which is beneficial to the surface of the target mineral. The adhered fine particles are peeled off, which avoids the influence of sliming phenomenon on the selectivity of the chemical, and realizes the full contact between the slurry and the chemical.

步骤S3:一段强力混合区100的矿浆通过调浆桶下层的环形隔板10与锯齿圆盘涡轮剪切器13进入二段强力剪切区200,锯齿圆盘涡轮剪切器13表面开设的环形剪切口(第三剪切口133围设形成)与边缘上下交替的锯齿卷刃(第二剪切齿132交替弯曲形成)对通过的矿浆形成强剪切作用。Step S3: The pulp in the first-stage strong mixing zone 100 enters the second-stage strong shearing zone 200 through the annular baffle 10 and the serrated disk turbo shear 13 on the lower layer of the pulping barrel, and the ring-shaped serrated disk turbo shear 13 is opened on the surface. The shearing port (the third shearing port 133 is surrounded by) and the serrated winding edge with alternating up and down edges (the second shearing teeth 132 are alternately bent and formed) form a strong shearing effect on the passing ore pulp.

步骤S4:二段强力剪切区200中的矿浆在半圆管式圆盘涡轮搅拌器12的搅拌下通过两环形隔板10间的剪切条栅9,剪切条栅9表面的第二剪切口91和锯齿状卷刃(第一剪切齿93形成)对矿浆进行进一步剪切强化。同时,调浆桶桶壁处的竖直挡板8也对转动的矿浆形成阻碍,有助于提高矿浆紊流度。经强化剪切调浆后的矿浆通过上层环形隔板10与锯齿圆盘涡轮剪切器13进入三段强力输送区300。Step S4 : the pulp in the second-stage strong shearing zone 200 passes through the shearing grid 9 between the two annular partitions 10 under the stirring of the semi-circular tubular disc turbine agitator 12 , and the second shearing grid on the surface of the shearing grid 9 . The notch 91 and the serrated winding edge (formed by the first shear teeth 93) further shear strengthen the pulp. At the same time, the vertical baffle plate 8 on the wall of the mixing barrel also forms an obstacle to the rotating pulp, which helps to improve the turbulence of the pulp. The ore pulp after intensive shearing and pulping enters the three-stage strong conveying area 300 through the upper annular partition 10 and the sawtooth disk turbine shear 13 .

二段强力剪切区200中剪切条栅9和锯齿圆盘涡轮剪切器13的组合设计,实现了矿浆在径向和轴向的剪切强化,降低了细粒矿物因绕流运动对细泥剥离的不利影响,进一步增强了矿物颗粒与药剂间的分散、碰撞与粘附,是处理低品质难调浆矿物颗粒的关键环节。The combined design of the shear grid 9 and the sawtooth disc turbine shear 13 in the second-stage strong shear zone 200 realizes the shear strengthening of the pulp in the radial and axial directions, and reduces the impact of fine-grained minerals due to the movement of the surrounding flow. The adverse effect of fine mud stripping further enhances the dispersion, collision and adhesion between the mineral particles and the agent, which is a key link in the treatment of low-quality mineral particles that are difficult to adjust.

步骤S5:进入三段强力输送区300的矿浆在反向斜叶圆盘涡轮搅拌器6的带动下,沿切向出料管5顺式排出,实现了对已完成调浆矿浆的快速处理,有助于防止过度调浆对后续浮选的不利影响,是处理低品质难调浆矿物颗粒的最终环节。Step S5: The ore pulp entering the three-stage strong conveying area 300 is driven by the reverse inclined blade disc turbine agitator 6, and is discharged along the tangential discharge pipe 5, so as to realize the rapid processing of the completed sizing slurry, It helps to prevent the adverse effects of excessive sizing on subsequent flotation, and is the final link in the treatment of low-quality difficult-to-sizing mineral particles.

需要说明的是,根据入料性质和现场生产需要,也可通过改变挡板8和剪切条栅9的数量来实现对矿浆剪切作用的调控。当矿物颗粒性质复杂,细泥含量大(难浮选)时,可增加挡板8和剪切条栅9的数量,强化剪切调浆效果;当矿物颗粒性质均一,细泥含量少(易浮选)时,可以减少竖直挡板8和剪切条栅9的数量,提高矿浆通过量,增加设备处理能力。当设备出现故障或检修时,可通过事故排料管11放出调浆桶内矿浆进行检修操作,同时结构化设计也有利于对关键部件调整与更换维修,提高了设备的使用寿命。It should be noted that, according to the nature of the incoming material and the needs of on-site production, the regulation of the shearing effect of the pulp can also be achieved by changing the number of the baffles 8 and the shearing grids 9 . When the nature of the mineral particles is complex and the fine mud content is large (difficult to flotation), the number of baffles 8 and shear bars 9 can be increased to enhance the shear slurry mixing effect; when the mineral particles are uniform in nature and the fine mud content is low (easy to float). During flotation), the number of vertical baffles 8 and shear bars 9 can be reduced, the throughput of ore pulp can be increased, and the processing capacity of the equipment can be increased. When the equipment fails or is overhauled, the ore pulp in the mixing barrel can be released through the accident discharge pipe 11 for overhaul operations. At the same time, the structural design is also conducive to the adjustment, replacement and maintenance of key components, and improves the service life of the equipment.

以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Substitutions should be covered within the protection scope of the present invention.

Claims (10)

1. The strong mixing and shearing device is characterized by comprising a pulp mixing barrel, wherein the pulp mixing barrel is sequentially provided with a first strong mixing area (100), a second strong shearing area (200) and a third strong conveying area (300) from bottom to top, ore pulp enters the first strong mixing area (100) from the bottom of the pulp mixing barrel and is output from the third strong conveying area (300) after passing through the second strong shearing area (200).
2. The strong mixing and shearing device for the flotation of fine minerals is characterized in that two annular partition plates (10) are horizontally arranged in the mixing barrel, and the two annular partition plates (10) divide the mixing barrel into three sections of structured mixing zones from bottom to top, namely the first section of strong mixing zone (100), the second section of strong shearing zone (200) and the third section of strong conveying zone (300).
3. The powerful mixing and shearing device for flotation of fine minerals as claimed in claim 2, wherein two serrated disc turbine cutters (13) are arranged in the mixing barrel, and the two serrated disc turbine cutters (13) are respectively arranged flush with the two annular partition plates (10).
4. A strong mixing and shearing device suitable for the flotation of fine minerals according to claim 3, characterised in that a gap is left between said serrated disk turbine shears (13) and said annular partition (10).
5. The intensive mixing and shearing device for the flotation of fine minerals as claimed in any one of claims 1 to 4, wherein the inner wall of the mixing barrel is provided with a baffle (8), and the baffle (8) is vertically arranged and provided with a plurality of baffles.
6. The powerful mixing and shearing device for flotation of fine minerals is characterized by further comprising a power unit, wherein the power unit comprises a power transmission mechanism (1), a motor (2) and a main shaft (7), one end of the main shaft (7) penetrates out of the size mixing barrel and is connected with the motor (2) through the power transmission mechanism (1), and the other end of the main shaft is in a cantilever shape in the size mixing barrel.
7. The intensive mixing and shearing device for fine mineral flotation according to claim 6, wherein a semicircular tubular disk turbine agitator (12) is arranged in the section of intensive mixing zone (100), and the semicircular tubular disk turbine agitator (12) is arranged on the main shaft (7).
8. The powerful mixing and shearing device for flotation of fine minerals as claimed in claim 6, wherein a semi-circular tubular disk turbine agitator (12) is arranged in the two-stage powerful shearing zone (200), and the semi-circular tubular disk turbine agitator (12) is arranged on the main shaft (7).
9. The powerful mixing and shearing device for flotation of fine minerals as claimed in claim 6, wherein a reverse pitched blade disc turbine agitator (6) is arranged in the three sections of powerful conveying zones (300), and the reverse pitched blade disc turbine agitator (6) is arranged on the main shaft (7).
10. An intensive mixing and shearing method suitable for the flotation of fine minerals, which is characterized by adopting the intensive mixing and shearing device suitable for the flotation of fine minerals, as claimed in claims 1 to 9, and comprising the following steps:
step S1: closing the accident discharging pipe (11) and starting the motor (2);
step S2: opening an ore pulp discharging pipe (5), an ore pulp feeding pipe (15) and a chemical adding pipe (14) in sequence, and injecting ore pulp and a chemical into the pulp mixing barrel;
step S3: the ore pulp in the first-stage strong mixing zone (100) enters a second-stage strong shearing zone (200) through an annular partition plate (100) at the lower layer of the pulp mixing barrel and a sawtooth disc turbine shearing device (13);
step S4: the ore pulp in the second-section powerful shearing zone (200) enters a third-section powerful conveying zone (300) through an upper-layer annular partition plate (10) and a sawtooth disc turbine shearer (13) after being subjected to reinforced shearing and pulp mixing;
step S5: the ore pulp entering the three-section strong conveying area (300) is driven by a reverse inclined blade disc turbine stirrer (6) to be discharged along the tangential discharging pipe (5) in a cis-form manner.
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