阅读说明：本技术 高效节能中矿负压循环射流微泡浮选柱 (High-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column ) 是由 刘宇 吴朝波 于 2021-06-16 设计创作，主要内容包括：本发明涉及矿料浮选技术领域,公开了高效节能中矿负压循环射流微泡浮选柱,所述浮选柱的上方设有矿化器,所述矿化器的出料端连接有分流管,且矿化器通过分流管与分配器连接,所述矿化器的内部设置有可调节聚氨酯变径内衬,且矿化器的外侧对称连接有进气管,所述进气管的进气端连接有进气阀。本使用新型当浮选物料时,如果是难选物料,一般增加(粗、扫)选的容积30％～50％,省电30％～40％,若属易选硫化矿的浮选系统(含十几台浮选机和搅拌槽；鼓风机筹)配置,相同处理量,节电≥50％,因此设备具有中矿循环富集工艺,精矿回收率较传统浮选机提高1～2%,细粒级矿物回收的提高使品位也会有所提高。(The invention relates to the technical field of mineral aggregate flotation, and discloses a high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column. When the novel flotation device is used for floating materials, if the materials are difficult to float, the volume of (rough and sweeping) flotation is generally increased by 30% -50%, electricity is saved by 30% -40%, if the materials belong to flotation systems (comprising dozens of flotation machines and stirring tanks; and air blower arrangement) of easy-to-select sulfide ores, the same treatment capacity is achieved, electricity is saved by more than or equal to 50%, therefore, the device has a middling recycling enrichment process, the recovery rate of concentrate is improved by 1-2% compared with that of the traditional flotation machine, and the grade can also be improved due to the improvement of fine-fraction mineral recovery.)

1. The high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column comprises a flotation column (1), and is characterized in that a middling box (2) is arranged on one side of the flotation column (1), a variable-frequency slurry pump (4) is arranged at the bottom of the middling box (2) in a matched manner, a middling overflow box (14) is arranged inside the middling box (2), and a middling overflow flashboard (15) is arranged at the upper part of the middling overflow box (14);

a tailing overflow box (13) is arranged on the other side of the flotation column (1), the tailing overflow box (13) is connected with the bottom cone part of the flotation column (1) through a pipeline, and a tailing overflow flashboard (12) is arranged at the upper part of the tailing overflow box (13);

the tail end of a bottom cone of the flotation column (1) is connected with a bottom flow valve (8), a mineralizing device (3) is arranged above the flotation column (1), a discharge end of the mineralizing device (3) is connected with a shunt pipe (5), and the mineralizing device (3) is connected with a distributor (6) through the shunt pipe (5);

an adjustable polyurethane variable-diameter lining (11) is arranged inside the mineralizer (3), the outer side of the mineralizer (3) is symmetrically connected with an air inlet pipe (10), and the air inlet end of the air inlet pipe (10) is connected with an air inlet valve (16);

a middling collecting hopper (9) is arranged inside the flotation column (1), and a foam diversion trench (7) is arranged at the upper end of the flotation column (1).

2. The high-efficiency energy-saving middling negative pressure circulating jet flow micro-bubble flotation column according to claim 1, wherein the bottom of the middling overflow tank (14) and the lower part of the tailing overflow tank (13) are provided with coarse sand pipes and valves.

3. The high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column according to claim 1, characterized in that the froth guiding gutter (7) is in the form of an overhead overflow gutter, and the froth guiding gutter (7) is in a cobweb structure.

4. The high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column according to claim 1, wherein the tail ends of the flow dividing pipes (5) are symmetrically provided with four groups of flow dividing pipe openings, the flow dividing pipe openings are symmetrically arranged in a cross shape, the number of the distributors (6) is the same as that of the flow dividing pipe openings, and the distributors (6) and the flow dividing pipe openings are in one-to-one correspondence with each other.

5. The high-efficiency energy-saving middling negative pressure circulating jet microbubble flotation column according to claim 1, characterized in that the number of the distributors (6) can be increased, and the distributors (6) are arranged in a ring-shaped symmetrical manner relative to the center of the flow dividing pipe (5).

6. The high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column as claimed in claim 1, characterized in that a discharge pipeline is connected to one side of the middling collecting hopper (9) at the bottom end position, and the middling collecting hopper (9) is connected with the middling box (2) through the discharge pipeline.

Technical Field

The invention relates to the technical field of mineral aggregate flotation, in particular to a high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column.

Background

The flotation column has the advantages of simple structure, low energy consumption, small floor area, easy operation and control and the like, is suitable for treating micro-fine mineral, and is suitable for treating micro-fine mineral, wherein ore pulp is fed from an upper ore feeding pipe and uniformly flows into the flotation column, compressed air is filled into the column through a plenum chamber at the lower end of the column body through a vertically arranged air pipe, a large number of formed fine bubbles are uniformly distributed on the whole cross section, the ore pulp slowly descends under the action of gravity, the bubbles slowly rise from bottom to top and continuously meet with useful mineral to be selected in the ore pulp in the column, the mineral to be selected is attached to the surface of the rising bubbles due to the action of a medicament in convection motion, a mineralized foam layer is formed at the upper part of the column body and automatically overflows into a concentrate tank, and the rest mineral is discharged from a tailing pipe at the conical bottom of the lower part of the column body.

However, the micro-bubble flotation columns for mines in the current market have some defects, and the traditional flotation columns have higher energy consumption for processing (refractory, difficult to activate and long in flotation time) refractory materials when flotation is carried out on mineral materials, so that the flotation efficiency is lower while the cost is increased.

Therefore, the person skilled in the art provides an efficient and energy-saving middling negative pressure circulating jet flow micro-bubble flotation column to solve the problems presented in the background art.

Disclosure of Invention

The invention aims to provide an efficient and energy-saving middling negative pressure circulating jet flow microbubble flotation column to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an efficient energy-saving middling negative pressure circulating jet microbubble flotation column comprises a flotation column, wherein a middling box is arranged on one side of the flotation column, a variable-frequency slurry pump is arranged at the bottom of the middling box in a matched mode, a middling overflow box is arranged inside the middling box, a middling overflow gate is arranged on the upper portion of the middling overflow box, a tailing overflow box is arranged on the other side of the flotation column, the tailing overflow box is connected with a bottom cone portion of the flotation column through a pipeline, a tailing overflow gate is arranged on the upper portion of the tailing overflow box, a bottom cone end of the flotation column is connected with a bottom flow valve, a mineralizer is arranged above the flotation column, a discharge end of the mineralizer is connected with a flow dividing pipe, the mineralizer is connected with a distributor through the flow dividing pipe, an adjustable polyurethane reducing inner lining is arranged inside the mineralizer, an air inlet pipe is symmetrically connected to the outer side of the mineralizer, and an air inlet end of the air inlet pipe is connected with an air inlet valve, the flotation column is internally provided with a middling collecting hopper, and the upper end of the flotation column is provided with a foam diversion trench.

As a still further scheme of the invention: and the bottom of the middling overflow box and the lower part of the tailing overflow box are both provided with a coarse sand pipe and a valve.

As a still further scheme of the invention: the foam diversion trench is in a high overflow trench form and is in a cobweb structure.

As a still further scheme of the invention: the tail end symmetry of shunt tubes is provided with the reposition of redundant personnel mouth of pipe, and the orificial quantity of reposition of redundant personnel is four groups, and the reposition of redundant personnel mouth of pipe is the crisscross symmetrical arrangement of cross, the distributor is the same with the orificial quantity of reposition of redundant personnel, and the distributor is the mutual one-to-one with the reposition of redundant personnel mouth of pipe.

As a still further scheme of the invention: the number of the distributors can be increased, and the distributors are arranged in a ring shape and symmetrical mode relative to the center of the shunt tubes.

As a still further scheme of the invention: one side of the middling collecting hopper is connected with a discharging pipeline at the position of the bottom end, and the middling collecting hopper is connected with the middling box through the discharging pipeline.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with the traditional flotation column and flotation machine, the device has the advantages of small occupied area, energy conservation and electricity conservation of 35-50%.

2. When materials are floated, if the materials are difficult to be selected (difficult to be selected, difficult to be activated and long in flotation time), the volume of (rough and scavenging) selection is generally increased by 30-50%, electricity is saved by 30-40%, if the materials belong to a flotation system (comprising dozens of flotation machines and stirring tanks; and an air blower is arranged) for easily selecting sulfide ores, the same treatment capacity is achieved, electricity is saved by more than or equal to 50%, therefore, the equipment has a middling recycling enrichment process, the recovery rate of concentrate is improved by 1-2% compared with the traditional flotation machine, and the grade is improved due to the improvement of the recovery of fine-fraction minerals.

Drawings

FIG. 1 is a schematic structural diagram of a high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column;

FIG. 2 is a schematic structural diagram of a high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column middling mineralizer;

FIG. 3 is a schematic structural diagram of a shunt pipe in the high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column;

FIG. 4 is a top view of a shunt pipe in the high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column;

FIG. 5 is a schematic structural diagram of a distributor in the high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column;

FIG. 6 is a schematic structural diagram of a middling collecting hopper in the high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column;

FIG. 7 is a top view of a middling collecting hopper in the high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column;

fig. 8 is a schematic structural diagram of a foam diversion trench in the high-efficiency energy-saving middling negative pressure circulating jet flow microbubble flotation column.

In the figure: 1. a flotation column; 2. a middling box; 3. a mineralizing device; 4. a variable frequency slurry pump; 5. a shunt tube; 6. a dispenser; 7. a foam diversion trench; 8. a underflow valve; 9. a middling collecting hopper; 10. an air inlet pipe; 11. the polyurethane variable diameter liner can be adjusted; 12. a tailing overflow gate plate; 13. a tailing overflow tank; 14. a middling overflow box; 15. a middling overflow gate; 16. an intake valve.

Detailed Description

Referring to fig. 1 to 8, in the embodiment of the present invention, an energy-efficient middling negative pressure circulating jet microbubble flotation column includes a flotation column 1, a middling box 2 is disposed on one side of the flotation column 1, a variable frequency slurry pump 4 is disposed at the bottom of the middling box 2, a middling overflow box 14 is disposed inside the middling box 2, a middling overflow gate 15 is disposed at the upper portion of the middling overflow box 14, a tailing overflow box 13 is disposed on the other side of the flotation column 1, coarse sand pipes and valves are disposed at the bottom of the middling overflow box 14 and the lower portion of the tailing overflow box 13, the tailing overflow box 13 is connected to the bottom cone portion of the flotation column 1 through a pipeline, a tailing overflow gate 12 is disposed at the upper portion of the tailing overflow box 13, a bottom cone end of the flotation column 1 is connected to a bottom flow valve 8, a mineralizer 3 is disposed above the flotation column 1, a discharge end of the mineralizer 3 is connected to a diversion pipe 5, and the mineralizer 3 is connected to a distributor 6 through the diversion pipe 5, the tail end symmetry of shunt tubes 5 is provided with the reposition of redundant personnel mouth of pipe, and the reposition of redundant personnel mouth of pipe is the cross symmetrical arrangement, and distributor 6 is the same with the orificial quantity of reposition of redundant personnel, and distributor 6 and the mutual one-to-one of reposition of redundant personnel mouth of pipe, through the symmetrical formula distribution to distributor 6, can be with bubble evenly distributed in flotation column 1, and distributor 6 increases according to the change shunt tubes 5 of demand accessible, and the center of relative shunt tubes 5 is the ring symmetry and arranges.

The adjustable polyurethane reducing lining 11 is arranged inside the mineralizing device 3, the outer side of the mineralizing device 3 is symmetrically connected with an air inlet pipe 10, the air inlet end of the air inlet pipe 10 is connected with an air inlet valve 16, the mineralizing device 3 has the characteristic of no energy consumption, air enters ore pulp and is mixed through negative pressure to generate micro bubbles, and the air inlet amount and the size of the bubbles can be adjusted through the air inlet valve 16 and the adjustable polyurethane reducing lining 11.

The inside of flotation column 1 sets up middlings and collects fill 9, and one side that middlings was collected and is fought 9 is located bottom position department and is connected with row's material pipeline, and middlings is collected and is fought 9 and be connected with middlings case 2 through row's material pipeline, and in the flotation process, the bubble rises and breaks the mineral that causes in advance and sinks and get into middlings and collect fill 9, in getting into middlings case 2 through arranging the material pipeline and subsiding the back and giving flotation column 1 again with frequency conversion sediment stuff pump 4, circulate the collection to the mineral.

The upper end of the flotation column 1 is provided with a foam diversion trench 7, the foam diversion trench 7 is in a high-position overflow groove form, the foam diversion trench 7 is in a cobweb-shaped structure, the foam diversion trench 7 in the high-position overflow groove form is used for collecting concentrate foam, the cobweb-shaped structure is used for increasing a collecting channel of the concentrate foam, and the effective rate of the foam is improved.

The working principle of the invention is as follows: after the ore pulp of the original degranulation enters the middling box 2, the variable frequency slurry pump 4 is started, the frequency of the slurry pump is adjusted, meanwhile, a gate valve of a starting circulating pipe at the bottom of the flotation column 1 is started, the ore pulp is prevented from settling and blocking after entering the flotation column, the ore pulp after the variable frequency and the high pressure enters a specially-made mineralizer 3 through a process pipe, the ore pulp is subjected to high pressure contraction and release through the mineralizer 3, a large amount of stable natural air is sucked through an air inlet valve 16 on the mineralizer 3 through negative pressure, the mineralized ore pulp is mineralized with the ore pulp, the mineralized ore pulp enters a distributor 6 through a flow dividing pipe 5 and uniformly distributed and ascended in the flotation column 1, after the mineralized ore pulp receives chemicals, hydrophobic minerals uniformly float and merge along with bubbles, when the bubbles float to the liquid level, a part of the foams merge and then break, the mineral with the ore, the sunken minerals are fed into the middling box 2 again through a middling collecting hopper 9, and are pumped back into the flotation column 1 through the variable frequency slurry pump 4 to be reselected with the original ore pulp, the mineral-enriched foam enters the next process through a foam diversion trench 7, and in the ore pulp entering through a distributor 6, gangue without carrying ore, ore without complete grain decomposition, refractory oxidized ore and the like, floating substances which are not carried by the foam enter a coarse sand pipe and a tailing overflow groove through a tailing pipe at the bottom, and enter the next process until the flotation is finished.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.