Exactly your chemistry.
Exactly your chemistry. Contact Research & Development Clariant GmbH Division Functional Chemicals BU III Mining Chemicals D-65926 Frankfurt am Main Tel.: ++49 (69) 305 - 50 22/ 68 51 Fax: ++49 (69) 30 32 99 Marketing Clariant GmbH Division Functional Chemicals BU III Mining Chemicals Am Unisys-Park 1 D-65840 Sulzbach am Taunus Tel.: ++49 (6196) 757-78 49 Fax: ++49 (6196) 757-89 66 Internet www.clariant-surfactants.com
Functional Chemicals Division
Clariant (Brasil) S.A. Dept. Functional Chemicals / Mining Av. das Nacoes Unidas, 18.001 BR 04795-900 Sao Paulo, BRAZIL Tel.: ++55 (11) 525 -76 24 Fax: ++55 (11) 525 -76 94
Mining Chemicals
Clariant Colorquimica (Chile) Ltda. Functional Chemicals Division / Mining Camino a Melipilla 15170 Maipu P.O. Box Casilla 9096 Correo 21 Santiago Santiago de Chile Tel.: ++56 (23) 73 41 50 Fax: ++56 (23) 73 41 20 Clariant (Australia) Pty. Ltd. Functional Chemicals Division / Mining 675-685 Warrigal Road Chadstone Vic 3148 Tel.: ++61 (3) 92 54 10 92 Fax: ++61 (3) 92 54 10 11 Clariant (Southern Africa) Pty Ltd. Functional Chemicals Division / Mining 254 Point Road DURBAN 4001 South Africa Tel.: ++27 (31) 33 22 090 Fax: ++27 (31) 33 22 084 Clariant (Canada) Inc. Functional Chemicals Division / Mining 4600 rue Cousens St. Laurent. Quebec, Canada H4S 1X3 Tel.: ++1 (514) 832 25 51 Fax: ++1 (514) 334 62 32
0 0 0 2 . 4 0 E 8 5 1 5 R B E
n i a M m a t r u f k n a r F , v r e s m m o C
Product Information
PYRITE-COPPER ORE
Collectors
06 07
Collectors for Sulphide and Metallic Ores These collectors are used almost exclusively for the flotation of sulphide minerals,
XANTHATES
sulphidized oxide minerals and precious
Product name
metals. They are characterised by the
Xanthate
functional -SH group bonded to a carbon or
S
phosphorus atom. The nonpolar radicals
Chemical formula
of these collectors are generally short
Me is either Na or K
+
+
R – O – C +
S-Me+
chain aliphatic hydrocarbons. The wide range of collectors for
Application
sulphide and metallic ores consists of high
Xanthates are used for the flotation of
quality xanthates and dithiophosphates.
sulphide and sulphidized oxide ores (sulphidizer: sodium sulphide Na2S or hydrosulphide NaHS). The activity of the xanthates increases with increasing chain length of the alkyl group R; the selectivity decreases in accordance with increased chain length. Xanthates are often used in combination with other reagents such as dithiophosphates or thiocarbamates,
8 7
°
often added to the scavenger circuit
g l e c t a n C o n t a l e n a [ ] a o n g
8 0
to improve the total rec overy. They are
°
°
7 4
normally used in aqueous solutions. 6 7 %
°
6 2 %
6 8
°
5 6 % 6 0
°
Xanthates undergo hydrolysis in the acid pH range, and are therefore preferred
t e s t n a t i o n l e F l o t a p u r e g a t h a t e , n w i t h 0 g / t X a [ % ] 1 y a n d r e c o v e r l e a d
for flotation in alkaline pulp streams. The flotation results can be improved by simultaneous use of xanthates together
3 7 %
with dithiophosphates (see page 10/11).
5 0
°
2 3 %
1 0 %
Xanthates are available as powder or in
h e x y a m l - y l x a b u - x n t a n t h a y l p r t - t e h a o p x a e t t y n e l - x h y t h a t l - m a n x a e e t t h h y n t a t l - h a e x a t e n t h a t e
pellet form and with an active matter content of 90% (SIPX and SIBX with 90% and 84% active matter).
Range of products
CORRELATION OF RECOVERY AND CONTACT ANGLE OF AQUEOUS XANTHATE SOLUTIONS E.G. ON PURE
GALENA
08 09
PEX
SEX
Potassium ethyl xanthate Sodium ethyl xanthate
SIPX
Sodium isopropyl xanthate
SIBX
Sodium isobutyl xanthate
PAX
Potassium amyl xanthate
PHX
Potassium hexyl xanthate
Frothers BUBBLES IN GALENA
These reagents are surface-active chem-
POLYPROPYLENE GLYCOL
icals, capable of being adsorbed on the
Brand
air-water interface. Frothers are generally
Flotanol C-7
hetero-polar substances. They consist
FLOTATION
of a nonionic polar group exhibiting a hy-
Chemical formula
drophilic nature coupled with a nonpolar
H – O – CH2 – CH – O – (CH2 – CH – O)n – H
hydrophobic alkyl group, the tendency being to force the latter into the air phase. Collectors for non-metallic ores, as well
CH3
CH3
Application Flotanol C-7 has outstanding properties for
as amines, usually generate sufficient
coarse particle flotation. The polyglycol
froth, which in most cases render the use
frothers tend to form fine froths that are
of frothers unnecessary. When using
quite selective. However, due to their high
sulphide collectors, the addition of a frother
activity, overdosing must be avoided as
is necessary, for yielding sufficient frothing
froth persistency can be a problem. This
properties.
frother is especially useful when process-
There are three main chemical groups
ing streams (flotation pulps) have high
of frothers: polypropylene glycol ethers,
salt or electrolytic content. This is an appli-
polypropylene glycols and alcohols.
cation where many other frother types
Clariant has an extensive range of these
fail. Polypropylene glycol is ideal when
frothers.
collectors such as xanthic acid esters or mercaptans are used, as these collectors tend to hin der froth d evelopment.
16 17
Depressants and Dispersants Brands ®Tylose
DEPENDABLE
Brand ®Dispersogen A
grades
Chemical formula
D O S A G E O F R EA G E N T S W I T H A C U P F E E D E R
H
O
Chemical formula
H
OH
C
C
OH
H
C H
Anionic condensation product
Application
H
Depressant for carbonates in the flotation
C H C
of oxide minerals such as phosphates. OH
O
CH2OCH2COONa
Dispersogen A has also found some application as a depressant for graphite or
n
Carboxymethyl cellulose ethers (CMC)
carbonaceous shales, as well as in flotation of sulphide minerals in salt water with large mineral surfaces.
Application Carboxymethyl cellulose ethers (CMC) have been widely used in mineral processing as a depressant for talc or other magnesium silicates, especially in copper/ nickel mines. Clariant has a large range of CMC's suitable for the depression of naturally floating minerals.
20 21
Extractants and Other Specialties VACUUM DRUM FILTER – CLARIANT FILTER AIDS HELP
TO
TERTIARY AMINES FOR SOLVENT
SULPHO SUCCINIC ACID ESTER/
EXTRACTION AFTER LEACHING
FILTER AID
The solvent extraction process is based on
®Filter Aid B-70 is a strongly surface-active
amines whose salts can enter into an ion-
agent used to reduce the moisture content
exchange reaction with those metals that
of filter cake of mineral substances. It
are present in the form of anionic comple-
acts by greatly lowering the surface tension
xes. Examples of anionic metal complexes
of water, thus enabling the firmly bound
2–
are molybdates MoO4 , wolframates/
REDUCE THE MOISTURE REMAINING IN THE FILTER CAKE
capillary water to drain away.
tungstenate s WO42–, vanadates VO3– and 2–
chromates Cr2O7 .
ANTICAKING AND ANTIDUSTING
Brands
REAGENTS FOR FERTILIZER
®Hostarex A 324 and Hostarex A 327
AND POTASSIUM SALTS For this application, Clariant has a full range R
Chemical formula R = isooctyl (A 324) or
R – N – R
R = n-octyl/n-decyl (A327)
of Flotigam and Genamin types which are not covered in this brochure. Please refer to our technical bulletin “Fertilizer finishing with anticaking agents” for more
Application Hostarex A 324 can be used to separate cobalt and nickel. Hostarex A 327 is used extensively in the uraniu m processin g industry. It can also be used for the extraction of W, Mo and Re.
22 23
information.
