CN103817018A

CN103817018A - Inflating device for inflatable flotation columns

Info

Publication number: CN103817018A
Application number: CN201410044158.9A
Authority: CN
Inventors: 梁吉军; 史晓晖; 杨震; 陈琦; 郭玉华; 吴彬启; 齐丽丽; 王聪; 蔺磊; 亓玉; 张超; 张锋; 刘彬; 王书博
Original assignee: Shandong Laiwu Coal Mining Machinery Co Ltd
Current assignee: Shandong Laiwu Coal Mining Machinery Co Ltd
Priority date: 2014-01-27
Filing date: 2014-01-27
Publication date: 2014-05-28

Abstract

The invention relates to an inflating device for inflatable floatation columns, belongs to the field of flotation separation equipment and is particularly applicable to clean flotation and refinement of particles in fine flake graphite production. The inflating device comprises a first air storage device, a first sieve plate, foaming guns, a second air storage device, a second sieve plate and a third air storage device. The first air storage device, the second air storage device, the third air storage device and the foaming guns are arranged on the outer side of a lower column body; the first sieve plate and the second sieve plate are arranged above the foaming guns on the inner side of a lower column body. The foaming guns are respectively arranged on the outer side of the lower column body, distributed at three layers according to the lead angles alpha, beta and gamma, and are respectively mounted by the pitch angle eta and inserted to the lower column body by forming the included angle theta with the axis. The inflating device has the advantages that foams are uniform in distribution, collision and breakage of the foams are avoided, the chance for the foams to collide with the ore pulp particles is reduced, and grade of flotation concentrate and recovery rate are high.

Description

A kind of aerating device of pneumo type flotation post

Affiliated technical field

The present invention relates to a kind of aerating device of pneumo type flotation post, be particularly useful for fine cleaner flotation in thin crystalline flake graphite production and purify, belong to floatation equipment field.

Background technology

Pneumo type flotation post is widely used in fine cleaner flotation in the nonferrous productions such as copper, tungsten, molybdenum and purifies, improve grade and the rate of recovery of non-ferro metals floatation concentrate, the aerating device of this pneumo type flotation post is made up of air feed system and foam gun, is evenly arranged one deck foam gun in lower prop outside vertical in lower prop level.Have the following disadvantages: 1) bubble distribution is inhomogeneous, cylinder middle part bubble is many, and sidewall bubble is few; 2) foam gun is facing to foaming, and cylinder middle part part bubble hit breaks, and flotation effect is poor; 3) only arrange one deck foam gun, the flotation concentrate rate of recovery is low.

The pneumo type flotation post of domestic this aerating device is seldom applied in fine cleaner flotation purification in thin crystalline flake graphite production at present.

Therefore, design a kind of aerating device of pneumo type flotation post, be particularly useful for fine cleaner flotation in thin crystalline flake graphite production and purify, further improve grade and the rate of recovery of graphite flotation concentrate.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of bubble distribution evenly and the aerating device of the pneumo type flotation post of three layers of layout of foam gun.

The aerating device of a kind of pneumo type flotation post of the present invention, is made up of caisson (I), sieve plate (I), foam gun, caisson (II), sieve plate (II), caisson (III); Caisson (I), caisson (II), caisson (III) and foam gun are arranged in lower prop outside; Sieve plate (I), sieve plate (II) are arranged in the top of foam gun inside lower prop.

Caisson (I), caisson (II), caisson (III) are made up of cylinder, air inlet pipe, Pressure gauge, escape pipe respectively.

Foam gun is arranged in lower prop outside, and presses respectively α, β, three layers of distribution of γ lead angle, and its setting angle is: vertical angle η, and enter lower prop with axis angle θ oblique cutting.Its Main Function is: bubble distribution is even, and has avoided bubble hit to break; Bubble forms the eddy flow field of force, and spiral, has extended bubble and ore pulp particle collision opportunity, and flotation effect is good; Arrange three layers of foam gun, realized selected, roughly select, scan three phases, improved the flotation concentrate rate of recovery.

Described sieve plate (I), sieve plate (II), be evenly arranged a lot of holes on it.Its Main Function: make on the one hand the bubble distribution of rising even, and destroy the larger bubble rising, improved the grade of flotation concentrate; Can not be dropped to sieve plate (I), sieve plate (II) by the ore pulp of flotation on the other hand, be uniformly distributed by sieve plate, with the bubble adverse current collision of rising, some material sticks to bubble floating and goes out and reclaim, and further improves the concentrate rate of recovery simultaneously.

The invention has the beneficial effects as follows: bubble distribution is even, and avoided bubble hit to break, extended bubble and ore pulp particle collision opportunity, Floatation Concentrate Grade and the rate of recovery are high, are particularly useful for fine cleaner flotation in thin crystalline flake graphite production and purify.

The contrast of flotation concentrate quality index:

Certain thin crystalline flake graphite ore deposit, raw ore average grade 9.3%.Employing mineral processing circuit is: raw ore → coarse crushing → in small, broken bits → corase grind → roughly selecting, scan for twice → rough concentrate regrind for nine times, ten times thick selected → filtration → oven dry → classification → packing, the floatation equipment using is air agitation type floatation device, final Floatation Concentrate Grade 93.5%, the concentrate rate of recovery 85.1%.

Former mineral processing circuit is improved to: raw ore → coarse crushing → in small, broken bits → corase grind → roughly selecting, scan for twice → rough is regrinded for seven times, twice selected once purging selection → filtration → oven dry → classification → packing of eight roughly select → concentrate, roughly selecting the floatation equipment that operation selects is air agitation type floatation device, the equipment that selected operation is selected is the pneumo type flotation post of this aerating device of configuration, final Floatation Concentrate Grade 96.11%, the concentrate rate of recovery 89.68%.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention,

Fig. 2 is A-A cutaway view in Fig. 1,

In figure: 1-caisson (I), 2-sieve plate (I), 3-foam gun, 4-caisson (II), 5-sieve plate (II), 6-caisson (III).

The specific embodiment

As shown in the figure: pressure wind enters respectively caisson (I) 1, caisson (II) 4, caisson (III) 6, its outlet connecting hose one end respectively, the flexible pipe other end is connected with the entrance of foam gun 3, 3 points three layers of foam guns are arranged in lower prop outside, sieve plate (I) 2, sieve plate (II) 5 is arranged in the top of foam gun inside lower prop, make on the one hand the bubble distribution of rising even, on the other hand can not be by the ore pulp of flotation at sieve plate (I) 2, on sieve plate (II) 5, be uniformly distributed, with the bubble adverse current collision of rising, Floatation Concentrate Grade and the rate of recovery are improved.

Claims

1. an aerating device for pneumo type flotation post, is characterized in that: be made up of caisson (I), sieve plate (I), foam gun, caisson (II), sieve plate (II), caisson (III); Caisson (I), caisson (II), caisson (III) and foam gun are arranged in lower prop outside; Sieve plate (I), sieve plate (II) are arranged in the top of foam gun inside lower prop.

2. the aerating device of a kind of pneumo type flotation post according to claim 1, it is characterized in that: described foam gun in lower prop outside respectively by α, β, three layers of distribution of γ lead angle, its setting angle is: vertical angle η, and enter lower prop with axis angle θ oblique cutting.

3. the aerating device of a kind of pneumo type flotation post according to claim 1, is characterized in that: described sieve plate (I), sieve plate (II), be evenly arranged a lot of holes on it.