CN2191709Y

CN2191709Y - Flash flotation machine

Info

Publication number: CN2191709Y
Application number: CN 94211893
Authority: CN
Inventors: 何善述
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-12
Filing date: 1994-05-12
Publication date: 1995-03-15
Anticipated expiration: 2004-05-12

Abstract

The utility model relates to a flotation machine for mineral separation, comprising an inflator, a feeding pipe, a tank body, a tailing discharge pipe, a regulating valve, etc. The utility model is characterized in that a back flushing false floor is recoil is additionally arranged on the tail end of the feeding pipe, and a flow stabilizing plate is additionally arranged in the tank body; a bypass communicated with the tank body is additionally arranged on the outer side of the tank body, the regulating valve is installed on the bypass, and a tailing discharge box, a circulating pipe and a fine particle tailing discharge pipe are arranged on the bypass behind the regulating valve. The utility model is suitable for minerals with different properties, no matter fine or coarse and easy or difficult. The floatation speed is high, and the recovery rate can be increased greatly.

Description

Flash flotation machine

The utility model relates to mining machinery, belongs to a kind of flotation device of ore-dressing practice.

The floatation equipment in the various ore dressing plants of China before the eighties, mostly is " A " type flotation machine of introducing the mechanical agitation type of Soviet Union's formula, and has done some improvement, but equipment is still heavy, and energy consumption height, efficient are low; After the eighties, begun to introduce some new-type flotation devices of countries such as Japan, the U.S., Canada, as the excellent type flotation machine of Japan, the Wei Muke flotation device of the U.S., Canadian flotation column etc.And done some improvement, equipment is tending towards to large scale development, energy consumption has had reduction in various degree, but, the efficient of these equipment does not still have breakthrough raising, therefore required flotation time causes floatation equipment many, problems such as area of mill site is big, equipment investment is big, maintenance of equipment expense height, energy consumption height still at 30-50 minute.The gloomy professor of Jim of Australian Niu Kasaier university in 1987 has developed a kind of " the gloomy floating post of Jim ", by cell body, spray aerator, passage, foam flushing water orchestration, Foam Flowing Groove and mine tailing discharger liquid level self-checking device etc. and form.It is with respect to aforementioned floatation equipment, and in the shortening time, improving the flotation efficiency aspect has had breakthrough progress; Also have following problem but will generally promote the use of, a: because configuration aspects, this machine is only applicable to the flotation of thin mud material, the flotation of centering, coarse granule mineral, poor effect; B: the mine tailing of flotation does not have EGR, and valuable mineral is the probability of The enrichment of mineralization for once, causes the rate of recovery of refractory minerals low easily; C: its flotation liquid level self-checking device complexity, operation inconvenience, fault rate etc.

The purpose of this utility model is that will to improve a kind of adaptability strong, can be applicable to the flotation of thickness particulate mineral,, easily select refractory minerals flotation, black, the flotation of coloured and nonmetallic mineral, easy to operate, efficient is high, energy consumption is low flash flotation machine simple in structure.

Architecture advances scheme of the present utility model is: with " the gloomy floating post of Jim " is that improve on the basis.Set up a false end of recoil at the tail end of its passage the adjusting orifice plate wherein is housed; In cell body, set up stabilier between liquid level and the froth bed; Set up the bypass that communicates with cell body in the cell body outside, control valve is housed on bypass, the mine tailing case is housed after control valve, the bottom branch levels of mine tailing case is equipped with fine tailings delivery pipe and mine tailing circulation pipe, the mine tailing circulation pipe inserts aerator, and switch is housed, with the thickness according to mineral, difficulty or ease are regulated internal circulating load.

In practicality, aerator of the present utility model is according to different original ore properties, and difficulty or ease ore dressing thing, thickness mineral adopt " cross-flow ", " jet ", " eddy current " three kinds of different aerators respectively, constitute best beneficiating condition.

Main feature of the present utility model shows as:

1, owing to having set up the false end in the lower end of passage and having regulated orifice plate, the bottom, the certainly false end of ore pulp that makes passage is to rising, and by regulating the orifice plate of ore pulp upflow velocity, make mineralising coarse granule rise as far as possible and swum near froth zone, mine tailing then drains into the cell body lower cone from upper edge edge, the false end, avoid the direct row of ore pulp of passage to discharge from the mine tailing discharge pipe, and the harmful effect that brings waste then can improve the rate of recovery from cone.

2, increased the mine tailing EGR, can force the recovery of refractory minerals, improve the rate of recovery, adjusting ore pulp internal circulating load not only is of value to the even dispersion of air, particularly the wearing and tearing of the jet nozzle of " jet " formula aerator are changed the harmful effect of inflation rate, so the inflation rate and the operation of stablizing flotation device with the way of regulating the ore pulp internal circulating load.

3, because the ore pulp layer is generally more shallow, can obtains stable froth bed after setting up stabilier, thereby can improve metal recovery rate.

4, owing to adopted bypass and control valve in the utility model, can constant effectively flotation pulp liquid level, be that total discharge mine tailing divides two parts discharging, the coarse grain mine tailing of minority is directly discharged from the delivery pipe of cell body bottom, and most fine tailings is discharged from the fine tailings delivery pipe of top mine tailing case by bypass.Control valve on the dress bypass can be according to the needs of flotation, the flotation froth layer is adjusted to the 300-600 millimeters thick arbitrarily, no matter mineral slurry flux frequent variations how then, the capital keeps constant flotation liquid level, its result of use is fabulous, complicated automation equipment need be set, and easy to use and reliable.

Facts have proved: the utlity model has simple in structure, characteristics such as flotation time is short, efficient is high, energy consumption is low.

Below in conjunction with accompanying drawing the utility model is further described:

Accompanying drawing is the new structural representation of this practicality.

Embodiment: the utility model mainly by the tailings discharging pipe 10 of aerator 1, trunnion 2, passage 3, foam tank 4, cell body 6, support 9, belt switch, form.At passage the lower end a false end 7 of pot shape recoil, be housed, wherein " be equipped with " and regulate orifice plate 8, to regulate flow velocity (its structure can be the purpose that adjusting was changed or reached with two forms such as synthetic orifice plate dislocation up and down to the orifice plate of different apertures, different densities); In cell body, be provided with stabilier with holes 5; Be communicated with it at the cell body outer wall bypass 13 is housed, the suitable for reading of bypass is equipped with by regulating the control valve that screw mandrel 16 and regulating gate 14 constitute, be connected to mine tailing case 15 thereafter, the lower end branch levels of mine tailing case 15 is equipped with fine tailings delivery pipe 12 and mine tailing circulation pipe 11, and this mine tailing circulation pipe 11 inserts aerator 1 formation and loops back network.

The utility model operation principle is summarized as follows:

Ore pulp is delivered to aerator 1 by sand pump, be ejected into passage 3 through trunnion 2, mineralising through 6-12 second should, drop to the false end 7 of recoil rapidly, ore deposit gas compound is through speed adjusting plate 8, reach suitable flow velocity according to selected mineral, force coarse granule to be gone by floating, improve the rate of recovery of coarse granule concentrate near froth zone; Ore pulp is the left alone without help many clocks of time 1-2 that stay in cell body, by mineralising mineral form the froth bed of 300-600mm on cell body top, through froth paddle or flow automatically to foam tank 4 and emit, it is so-called flotation concentrate, mine tailing then drops to the bottom of cell body 6 from the upper brim edge at the false end 7 of recoil, the thicker mine tailing of about 1/3-1/2 is discharged by coarse grain tailings discharging pipe 10, the fine tailings of about 1/2-2/3, then through bypass 13, control valve enters mine tailing case 15, thickness according to froth bed, the operation control valve can constant flotation liquid level, the fine tailings that enters mine tailing case 15 is discharged from fine tailings delivery pipe 12, and fine grained mine tailing self-loopa pipe 11 turns back to aerator 1 through mineralising flotation once more in the great majority, thereby improves the rate of recovery greatly.

In the utility model, increased stabilier 5, can stablize, the superposed layer under the froth bed, thereby can improve the concentrate grade and the rate of recovery.

Aerator of the present utility model is the thickness according to mineral, and the difficulty or ease heterogeneity is selected " cross-flow ", " eddy current ", " jet " different aerator respectively for use.

Claims

A kind of high capacity flash flotation cell that is used for ore-dressing practice, have tailings discharging pipe, control valve of aerator, passage, cell body, foam tank, support, belt switch etc., it is characterized in that: set up a false end of recoil at the tail end of passage, the adjusting orifice plate wherein also is housed; In cell body, set up stabilier between liquid level and the froth bed; Set up the bypass that communicates with cell body in the cell body outside, control valve is to be contained on the bypass; Also tipping has a mine tailing case, the bottom of mine tailing case to divide upper and lower layer that fine tailings delivery pipe and mine tailing circulation pipe are housed after control valve, and the mine tailing circulation pipe inserts aerator and switch is housed.