OPTIMIZE. Mastering Molecular Science for Industrial Processing Solutions. Flotation Reagents for the Mining Industry

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1 OPTIMIZE TM Mastering Molecular Science for Industrial Processing Solutions Flotation Reagents for the Mining Industry

2 Technology Capabilities To meet the increasing market demands within the mining industry, Huntsman recently invested in its mining laboratory facilities around the world. At these sites in Australia, Brazil and South Africa, customer mineral samples can be tested in-house with Huntsman s reagents. Our in-house capabilities allow Huntsman to quickly and efficiently review our chemistry combination with our client s existing reagent suite, thus allowing us to optimize the overall chemistry applied. Our local sources also allow us to quickly screen new reagents by applying these to a clients ores, obtaining a fast turnaround of results and refining our products accordingly. About Our Laboratories Our mineral processing lab in Melbourne, Australia, opened in 2014 and is fully equipped for mineral sample preparation, flotation and basic analytical needs. Staffed with a number of metallurgists, technologists and technicians, this facility is well equipped to support clients needs, including product support and new product development to improve efficiencies in processing difficult-to-treat ores. Huntsman has also made a major investment in a new lab in Sao Paulo, Brazil. Opened in 2013, this facility has mineral processing capabilities to provide reagent solutions to the Brazilian iron ore industry and support customers regionally in South America. To support Huntsman s mining business in the Southern African region, we are working with Protea Mining Chemicals, a well-known local chemical distributor. With a well-equipped facility near Johannesburg, South Africa, Huntsman, through the Protea Mining Chemicals lab, is able to respond rapidly to clients needs across the Southern African region. These facilities are part of Huntsman s commitment and focus to help innovate and develop new chemistries to improve mining efficiencies and meet tomorrow s challenges for the mineral processing industry.

3 POLYFROTH Frother Series Properties Kinetics & Selectivity Mobility & Stability Enhanced Stability & Coarse Particles Recovery High Persistence & Coarse Particles Recovery Hydrophilic Wet W24 W34 W55 W31 Soluble Hydrophobic Dry W22 H27 H57 H30 H19 H28 10 Series 20 Series 30 Series 50 Series Dispersible Weak Fine Strong Coarse Strength Size Range Flotation Frothers The POLYFROTH series is a comprehensive range of specialty frothers offered by. The POLYFROTH series aims to deliver the full spectrum of frother properties (e.g., selectivity, water solubility and diffusion kinetics) and strengths required in mineral and coal mining applications. This is achieved by combining earlier TERIC and UNIFROTH frothers with new technologies, as well as utilizing innovative new product development. This special range of frothing properties and selectivity provides application and performance benefits in a wide range of flotation situations. As a group, they offer high metallurgical grades with low water carry-over into the concentrate. The POLYFROTH frothers are typically easily dispersible in water and have a low volatility that gives very good froth persistence. When compared to other frothers, they have a low level of toxicity and odor and are mostly non-flammable. The greater froth persistence, together with higher water solubility of selected frothers in the POLYFROTH series, can offer the option of a simpler single point addition although multiple addition points can often be more effective. Client feedback indicates that overall dose rates can be much lower than with alcohol- or glycol ether-based frother chemistries.

4 POLYFROTH Frother Series Product Range POLYFROTH 10 LOWEST STRENGTH n POLYFROTH H19 is among the weakest of the current POLYFROTH range. H19 is selective in base and precious metal flotation, producing a mobile, dry froth with low to moderate stability. Performance is comparable to methyl isobutyl carbinol (MIBC) and low molecular weight, alcohol-based frothers. POLYFROTH 20 LOW TO MODERATE STRENGTH n POLYFROTH W22 is a lower strength, highly selective frother, comparable to MIBC and other low molecular weight, alcohol-based frothers. W22 was specifically designed as a high flash point alternative to MIBC and typically operates at a significantly lower dose than that of MIBC. n POLYFROTH H27 is an intermediate strength frother that extends the properties of W22 but also offers a stronger hydrophobic glycol ether component, boosting the flotation froth kinetics and giving higher froth concentrate carry-over (mass pull). POLYFROTH 30 INTERMEDIATE STRENGTH n POLYFROTH W31 is a polyglycol ether frother that is an established industry alternative to Dowfroth 250C. It produces relatively mobile and freely draining froths of intermediate strength. It offers a combination of selectivity, froth stability and moderate kinetics, and therefore can be used in a wide range of flotation applications, where a balance of selectivity and strength is required. W31 can also be viewed as an alternative frother to other mid-strength, intermediate molecular weight, glycol ether/propylene glycol-based frothers. n POLYFROTH W34 is an intermediate to high-strength frother with solution characteristics similar to W31. It produces froths with well-defined structure and bubble size and is available for applications requiring intermediate froth stability and good froth depth control. POLYFROTH 50 HIGHEST STRENGTH n POLYFROTH W55 is a strong frother, offering good froth persistence and stability, but less selectivity. W55 typically results in reduced dosage and better froth depth control than other alternative strong alcohol/polyglycol ether blends. n POLYFROTH H57 is among the strongest, most hydrophobic in the series and produces drier froths. It is available for operations where strong froths are required to assist the flotation of coarse particles. It offers fast initial kinetics and can be used to help overcome frothing resistance. POLYFROTH W55 and H57 are often used alone, where their strength (due in part to their higher molecular weight) imparts superior qualities for coarse particle recovery in flotation circuits. They can be combined with other products to augment froth characteristics for desired properties and performance.

5 POLYFROTH Frother Physical Properties POLYFROTH Frother H19 W22 W24 H27 H28 H30 W31 W34 W55 H57 Type Alcohol Ether x x x x x x x Glycol Ether x x x Solubility Water x x x x x Fuel Oil x x x x x x x x x x Specific Gravity (25 C) Viscosity (cp, 20 C) Dynamic Surface Tension (mn/m, 20 C) Flash Point ( C) >100 > For further information, visit our webpage at or contact your local Huntsman flotation specialist. POLYFROTH Frother Applications - Ore Types POLYFROTH Frother H19 W22 W24 H27 H28 H30 W31 W34 W55 H57 Carbon - graphite x x x Coal x x x x Copper - azurite x x x x x x x x Copper - bornite x x x x x Copper - chalcocite x x x x x Copper - chalcopyrite x x x x x x x x x Gold bearing pyrite x x x x x Lead - galena x x x Molybdenite x x x x Nickel - pentlandite (low Ni:Fe) x x x x x x Nickel - pentlandite (high Ni:Fe) x x x x Platinum group elements x x x x x Potash x x x Silicates x x x Tin - cassiterite x x x Tungsten - wolframite x x x Zinc - sphalerite x x x x

6 Sales offices Australia 61 Market Road Brooklyn Victoria 3012, Australia Tel : Fax : China 49F Maxdo Centre 8 Xingyi Road Shanghai , P. R. China Tel : Fax : India Hiranandani Business Park, Lighthall B Wing, Saki Vihar Road, Chandivali, Andheri East, Mumbai , India Tel : Fax : /400 About Huntsman s Performance Products division is a leading global producer of intermediate chemistries and technologies. Masters of molecular science, we create chemical building blocks with unique features that simplify the production and improve the functionality of differentiated formulas employed across diverse consumer markets and industrial applications. From kind, gentle additives for skin and hair care formulations to powerful additives that boost the performance of fuels and engine oils, our performance chemistries enable continual innovation in products that shape and influence daily life. With manufacturing sites and technical teams located around the world, combines global reach with in-depth regional and sector-specific support. Serving major, well-established industries alongside niche, emerging markets, we manufacture more than 2,000 specialty chemicals and license in excess of 35 process technologies giving our customers a broad scope to create sustainable, differentiated solutions for a fast-changing world. Mexico Rio Lerma #32 Tlalnepantla Edo de Mexico Mexico Tel : Fax : South America Huntsman Quimica Brasil Ltda. Av. Prof. Vicente Rao, 90 Predio 122-2º andar São Paulo/SP Brazil Tel : Global headquarters Huntsman Corporation Woodloch Forest Drive The Woodlands, Texas, USA Tel : Fax : Asia Pacific 150 Beach Road #37-00 Gateway West Singapore Tel : Fax : Europe, Middle East and Africa Everslaan 45 B-3078 Everberg Belgium Tel : Fax : Disclaimer Huntsman Corporation warrants only that its products meet the specifications stated in the sales contract. Typical properties, where stated, are to be considered as representative of current production and should not be treated as specifications. While all the information presented in this document is believed to be reliable and to represent the best available data on these products, HUNTSMAN MAKES NO WARRANTY OR GUARANTEE OF ANY KIND, EXPRESS OR IM- PLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT OF ANY THIRD PARTY, OR WARRANTIES AS TO QUALITY OR CORRESPONDENCE WITH PRIOR DESCRIPTION OR SAMPLE, AND ANY USER OF PRODUCTS DESCRIBED HEREIN SHOULD CONDUCT A SUFFICIENT INVESTIGATION TO ESTABLISH THE SUITABILITY OF ANY PRODUCT FOR ITS INTENDED USE AND AS- SUMES ALL RISK AND LIABILITY WHATSOEVER RESULTING FROM THE USE OF SUCH PRODUCT, WHETHER USED SINGLY OR IN COMBINATION WITH OTHER SUBSTANCES. Products may be toxic and require special precautions in handling. For all products described herein, the user should obtain detailed information on toxicity, together with proper shipping, handling, and storage procedures, and should comply with all applicable safety and environmental standards. The behavior, hazards and/or toxicity of the products referred to in this publication in manufacturing processes and their suitability in any given end-use environment are dependent upon various conditions such as chemical compatibility, temperature, and other variables, which may not be known to Huntsman. It is the sole responsibility of the user of such products to evaluate the manufacturing circumstances and the final products under actual end-use requirements and to adequately advise and warn future purchasers and users thereof. OPTIMIZE is a trademark of Huntsman Corporation or an affiliate thereof in one or more, but not all, countries. POLYFROTH, TERIC and UNIFROTH are trademarks of Huntsman Corporation or an affiliate thereof in one or more, but not all, countries. Dowfroth is a trademark of The Dow Chemical Company ( Dow ) or an affiliated company of Dow. Copyright 2015 Huntsman Corporation or an affiliate thereof. All rights reserved. TM OPTIMIZE Mastering Molecular Science for Industrial Processing Solutions