DD142848A1 - METHOD FOR IMPROVING THE FLOTATIVE RECOVERY OF FLUORITE - Google Patents

Abstract

The invention can be used for flotation of fluorite from heaps with predominantly quartzitic calcitic Gait. The aim of the invention is a higher spreading 7 in the flotation of fluorite. The invention is the Task, a new collector for the fluorite flotation use. Aliphatic carboxylic acid C 8 to 18 and Alkylammonium salts * C 10 to 16 are collectively used as collectors for the Fluorite flotation used. The invention can be applied in the fluorite flotation of heaps with primarily quartzitischei and calcitic gait.

Description

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Title of the invention. '

Process for improving flotative recovery. of fluorite

Field of application of the invention

The invention can be used for the flotative recovery of fluorite from heaps with predominantly quartzitic and

calcitic gait. :

·. · ·. · ·. · Ί ".. ί

Characteristic of the known technical solutions

; It is known that in the flotation of fluorite predominantly 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 comparable

W. , Soap, for example, as sodium carboxylate, may be present. These carboxylic acids have disadvantages in terms of their collector action. Above all, the fluorite application is unsatisfactory. This is partly due to the fact that aliphatic carboxylic acids with in

2+ '2+ solution of polyvalent cations, e.g. Ca and Fe, form precipitated products and thus deprive collectors for hydrophobing 'the fluorite surface ·, ·. :. ..>. ;

Aim of the invention; ; _; /

The invention has the flotation recovery of fluorite with high fluorite spreading at the same collector for consumption · Goals' .. .. -;> ... ·. /. -. ''. , -. ". '.-:"' ·: X ^: '.}''''.' , '' [

Explanation of the essence of the invention ^:

The invention has for its object, by the use of a new collector reagent, which allows the flotation of fluorite from heaps primarily quartzitic and calcite gangue, to perform the Fluoritflotation with high fluorite application.

It has surprisingly been found that in addition to aliphatic carboxylic acids, alkylammonium salts can be used as collectors for fluorite flotation The use of garboxylic acids and alkylammonium salts together as collectors enables a substantial improvement of the fluorite application. , , , '../ .. ' .. "

As aliphatic carboxylic acids, the following compounds can be used: saturated and unsaturated fatty acids and their substitution products, e.g. COOH- and halogen-substituted carboxylic acids. ;

The chain length of the non-polar part of the collector is between 8 and 18 carbon atoms in the aliphatic; Carboxylic acids and 1o and 16 carbon atoms in the alkylammonium salts. , -

The flotation is advantageously carried out using the two collectors at a pH of 6 to 10. performed ^*: In addition to the two collectors carboxylic acids and alky ammonium salts are used as handles, for example, water glass, Quebracho and sodium.

The invention will be explained in more detail in the following embodiment.

Exemplary embodiment:

A natural fluorite plant (Schoenbrunn mine) was floated under the following conditions (basic floatation in one step): ^r

_O "

Chemical composition of the raw material

21.6% CaF ₂ . 5.1% CaCO ₃

50.3%

Grain size de's raw material: <£. ο, 25 mm

Collector:: Olein (techno product) '·:

1-Bromo-coconut fatty acid (technical product) 1-Br-tridec acid "dodecylammonium chloride"

Pushers for all experiments: '9oo g / t water glass

1oo g / t quebracho "" "2o g / t sodium hexametaphosphate

laboratory flotation apparatus solid weight: '

Stirrer speed: Air quantity · Turbidity temperature: Medium: pH value:

 Experimental procedure:

1.6 1 cell, pump, 5 ounce wheel

14oo min 16o l.h ~

Room temperature (22 ⁰ C ... 25 ° C) distilled water 6,7 '....: -'2-A ^: "

Oo ... 3 · min Dispersion of the solid 3 «... ·» 5 · min Pusher addition and agitation 5 ·: ··· 8. min Addition of collector and agitation

".., ..: pH adjustment; 8. * .. 18. min flotation

Results: Collector

Versei- addition ~ 1) amount ²⁾ degrees

in% in g / t in% in% in% in%

olein 5.8 olein 1oo olein 1oo Dodecylammonium chloride 1-bromo-coconut fatty acid 1oo Dodecylammonium chloride 1-Br-tridecanecarboxylic acid 1oo Dodecylammonium chloride

5oo 48.8 3.8 6.2 78.2

5oo 65 o 4.9 75.8 5.7., _T.

4oo]. · '·'

f 86,1 5,7 6, o 56,5 1ooJ: ^f .::

83, o 4.9 6.8 82.9

91.5 6.3 5.8 65, o

NaOH saponified

auf.Peststoffeinwaage based

R application C content in the concentrate

Claims (4)

Inventions claim · :: »',. ,1. Method of improving flotative recovery ^; fluorite characterized in that aliphatic ..:. saturated or unsaturated or substituted carboxylic acids having chain lengths in the nonpolar portion of between 8 and 18 carbon atoms and alkylammonium salts with y '10 to 16 carbon atoms are collectively used as collectors, the addition ratio of carboxylic acid to alkylammonium salts being 2: 1 to 5: 1. 2. The method according to item 1, characterized in that the Garbonsäuren present as free, acids or water-soluble salts and are used in the form of aqueous solutions or emulsions. , 3. The method according to item 1 and 2, characterized in that the flotation in the pH range between 6 and Io durch- ; to be led. , - 4. Method according to items 1 to 3 »characterized in that ^: the collectors used in conjunction with pushers become. , '·.