DD150155A1 - METHOD FOR FLOTATIVELY OBTAINING FLUORITE - Google Patents

Abstract

The invention relates to a process for the flotative recovery of fluorite. The invention aims to improve a flotation process economically. The object of the invention is to develop a process for the flotation of fluorite, with which even at Truebetemperaturen of about 3 degrees C high quality fluorite concentrates with high Fluoritausbringen and large Flotationsgeschwindigkeit be achieved. Tauride was found to be a collector in combination with foam regulating additives e.g. Metaupon can be used in combination with petroleum separately or used as an emulsion. Application: in fluorite flotation.

Description

The invention relates to a process for the flotative recovery of fluorite

c) Characteristic of the known technical solutions

In the flotation of fluorite mainly saturated and unsaturated aliphatic carboxylic acids (fatty acids) are used as collectors, mostly in the form of emulsions in which a small proportion of the carboxylic acids saponified (Natriuincarbox; ylat) may be present. As oppressive reagents for the accompanying minerals, e.g. Calcite and quartz are often used for tanning agents, starch and starch products, sodium-potassium-silicates and polyphosphates «The reagent regime fatty acid in combination with pushers has already been optimized in practice. However, it has significant drawbacks that could not be eliminated even by attempting substitution by other or modified fatty acids with the most effective pushers.

The disadvantages are ira single following:

It is complicated in a factory where the flotation task is subject to constant fluctuations in its mineralogical composition, the right ones

220729

To find additions to saddlers and pushers. This usually leads to either the Flotationsergebnis deteriorated or too large amounts of reagent are added. The consequences of this are economic disadvantages in the form of revenue losses or high costs.

A major disadvantage is that fatty acids are highly dependent on the temperature as a fluorite collector in their effectiveness. At low temperatures in the flotation pulp, especially the flotation speed and the Fluoritausbringen be affected, which can be compensated only partially by increased collector addition.

In addition to the associated rising reagent costs, the above-mentioned En oblerne the vote of the. Collector-pusher ratio turn on.

Furthermore, fatty acids are extremely sensitive to the multivalent cations present in large quantities in fluorite depletion. This generally entails a high consumption of collectors.

A disadvantage is also that fatty acids cause only a relatively low flotation

Fatty acids also have collector properties over sulfides, which are occasionally interfering with fluoride drives. Thus, it is inevitable to separate the sulfides in a first flotation with xanthogenates as a collector.

d) Object of the invention

The invention aims to develop an economical process. The object of the invention is to develop a process for the flotation of fluorite, with which even at turbid temperatures of about 3 ° C high quality

-3- 220729

Fluorite concentrates are achieved with high Fluoritausbringen and high flotation speed.

e) Presentation of the essence of the invention

Erfindungsgeraäß this object is achieved in that als.Sammler Tauride of the general formula

R-CO-N- (CH ₂ ) ₂ -SO ₃ H (Na)

in combination with foam regulating additives, e.g. Metaupon

CH ₃

"I

CH ₃ - (CH ₂ ) - CH = CH - (CH ₂ ) ₂ - CO - N - (CH ₂ ) ₂ - SO ₃ Na

in combination with petroleum (added together as emulsion or separately) ·

With this reagent regime, regardless of the temperature of the icing, a high fluorite output and e.g. achieve a higher flotation speed compared to olein. It is not necessary to add pressurized reagents. "The foam that develops under these conditions (depending on the collector volume and the mixing ratio of the collector additive) is small-bubbled and very densely filled with fluorite grains. The fluorite is strongly hydrophobic, the separation from the water is very easy.

Accompanying minerals of fluorite such as quartz, calcite, siderite, ankerite, anhydrite and sulfides do not float or only to a small extent, so that fluorite concentrates of very high purity are formed. On the sulfide Vorflotation can be omitted.

f) embodiment

1st embodiment

A Natural Fluorite Drive ()

was floated under laboratory conditions (basic flotation in one step):

220729

Chemical composition of the raw material

4.91% CaCO ₃ 29.42% SiO ₂ 7.64% FeCO ₃

1.14 % pyrite and chalcopyrite grain size of the raw material: - o, 25 mm

Collectors 1 Formula: CH ₃ (CH ^ CH = CH (CH _{2) 7} - CO - M

- (CH ₂ ) ₂ - SO ₃ Na

Metauponpaste (test pattern, active substance 36%) as 2 / oige aqueous solution.

Additive pusher:

Laborflotationsapparat:

Solids sample agitator speed: air close to: clouding temperature: medium: pH value: test procedure:

Petroleum (emulsified with Metaupon) water glass (W)

Quebracho (Q)

Sodium hexametaphosphate (MP)

2,2-1-Ze He with double fingering

5oo g

-1

1 4oo min

16o lh " ¹

4 +1 ⁰ C, room temperature 2o ° C distilled water

Suspension of the solid, pH control: 3 min

Pusher addition and agitation: 3 min add collector and agitation: 2 min pH adjustment

The foam removal took place in two fractions:

Results

1o fraction: 2 · fraction: see table

3 min 7 min

22072

2nd embodiment

Flotation test under operating conditions (1.5-nr cells). Base flotation with 3 purification stages without upstream sulphide flotation

Yersuchsiuaterial: Departures of the Schwiam-Sink plant

(13.4 % CaF ₂ ) fluorite mine

Throughput % grain size:

Pulp density;

Temper temper at ux: 17 O

Schönbrunn 8 t / h

1 35o g / l o,

pH: reagent grade j

2, oo kg / t 2.16 l / t

Result :

Metaupon paste Petroleum without pushers

Add the reagents in the base float

Content in %

BaSO ^ CaCO ₃ , 7 CaF ₂ , 5 R 2 ° 3 SiO ₂ S 2 task o, 5 2 , 9 13 , 6 3 ,8th 76.6 O 16 mountains 2 , 18 .4 concentrate o, 23 O 98 O , 3o o, 45 O , 02

Mass spreading; 9 »5% CaF ₂ ~ application: 69.6%

Table 1 .

Plotationsergeb'nisse (Grundflotation) to the 1st embodiment

Vers.-Sammler hem print number «. , he

amount

in g / t

Push-button

peep

amount of door.

in g / t in

1.Fr. 2.Fr. ges. 1.Fr. 2.Fr. ges.

⁰ GaGO ₃

'.. 2.Fr. ges.

"1 Metaupon 6oo without - • 9oo 1oo 2o 2o 91.3 6.4 97.7 9o, 3 43.0 84.2 2.9 9.9 3.8 petroleum 6oo 9oo 1oo 2o 4 91.6 4.7 96.3 89.9 42.0 85.2 3.3 8.4 3.7 2 Meta upon. 8 0.0 without - 2o 69, o 13.3 82.3 96.1 89.8 95, O o, 75 1.9 o, 95 petroleum 8oo 4 76.2 9.9 86.1 95.3 86.2 94.2 1.3 2.4 1.4 3 Metaupon. Petroleum 1 6oo 2oo W Q-IMP 2p 88.3 4.1 92.4 89.7 68.5 88.5 2.8 5.3 3, o Olein (comparative values) 8oo W Q MP 4 85.3 6.8 92.1 9o, 4 64.3 87.8 2.5 5.6 2.7 4 2o. 82.2 8.6 9o, 8 88.1 69.8 86, ο 3.5 4.9 3.6

R

• Ca F.

Fluorite output in the concentrate

-π CaF _o content in the concentrate ⁰ GaGO CaCO ^ content in the concentrate

1.Fr. 1st Fraction 2nd Fr. 2nd Fraction

Comparative results with Olein. For the same feed material;

Eeagens-

regime: 1. sulphide flotation 2 . Fluorspar flotation K-Äthj'lxanthogenat: o, 4 kg / t olein: 1, o kg / t octanediol: o, 1 kg / t water glass: 1.2 kg / t

Quebracho: ο, 15 kg / t Na-hexametaphosphate: 0.03 kg / t

Results:

Content in% ·

BaSO ₄ CaCO ₃ CaF ₂ E ₂ O ₃ SiO ₂ S ^

Concentrate o, 4 2.4 95.1 o, 4 1.5 0.03 Mountains 4.4

Claims (1)

Claim for invention mineral raw materials, characterized in that by application of the collector reagent on Garbonsäure-tauride base of the general formula -N- (CH ₂ ) ₂ - SO ₃ H (Na), where S is a saturated or unsaturated hydrocarbon group with the chain length CL ··· Gp ₀ and R * is a hydrogen atom or a short allele group (GHo-), in combination with additives high fluorite yields, high flotation rates and good concentrate quality probes can be achieved and the flotation is not affected even at low temperatures. Process according to Claim 1, characterized in that the additives which regulate foam formation and foam stability (non-polar substances, eg petroleum) are fed together with the collector in the form of an emulsion or separately to the flotation pulp. · A method according to claims 1 and 2, characterized in that the collectors can also be used in conjunction with regulatory reagents (e.g., pushers).