Depramin High Performance Additives for Froth Flotation

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1 Depramin High Performance Additives for Froth Flotation

2 Product overview AkzoNobel supplies Depramin in high, medium and low viscosity grades at various degrees of substitution. Customized products can be developed at our research facility. Depramin Product Range Various Depramin products have been developed for flotation circuits containing the following minerals: Pentlandite and other nickel sulfides Copper, lead and zinc sulfides Molybdenite Wolframite/Scheelite Precious metals Potash and lithium Production and Packaging Depramin can be supplied in kg big bags or 25 kg bags upon request. Performance The right Depramin can be selected based on performance. The two main performance parameters for Depramin are viscosity and degree of substitution. Viscosity and the degree of substitution both influence the interaction of Depramin with the multiple interfaces of a flotation system. The Depramin products cover a wide range of performance requirement. verview of key characteristics standard Depramin products: DS Viscosity re Depramin 347 Low Medium Nickel (Various) Depramin 347P15 Low Medium Various Depramin 267 Medium Low Various Depramin 267P15 Medium Low Various Depramin 177 Medium Low Platinum (Various) Depramin C Medium High Potash Depramin 96 High Medium Potash Viscosity vs degree of substitution of Depramin products: Viscosity High A summary of standard Depramin products is collected in the table below. In addition to these, tailor-made products can be developed in our research facilities on lab and production quantities. Low Low High Degree of substitution Depramin 177 Depramin 267 Depramin 347 Depramin 96 Depramin C

3 Depramin High Performance Additives for Froth Flotation 4 AkzoNobel s Depramin product line is a full-range of high-performance additives engineered for froth flotation. These products are produced according to strict quality standards at our modern facility in Italy. The Right Ingredients Depramin is the trade name of a family of water soluble polymers used in froth flotation. The various grades of Depramin are used extensively in potash, nickel, copper, lead and zinc flotation circuits. In addition, Depramin is used in precious metal recoveries for gold and platinum group minerals. Healthy and Safe Environment Safety is one of our core competencies and it is embedded in every step of our manufacturing processes. ur complete range of products is made to the highest quality standards in facilities that are continuously monitored to make certain that our products are safe, our employees are safe and environment is protected as well. All Depramin grades are produced in Italy according to IS 9001 and standards. We believe that safety is a culture, and in Akzo- Nobel safety is embraced by top management and by every employee in the company. Reliable and Cost-Effective Depramin is used at low dosage rates. For example, a typical flotation circuit will use between 50 and 400 g Depramin per ton of ore. To achieve consistent results, a concentrated solution of Depramin is prepared and metered into the flotation circuit using normal liquid dosing equipment. Sustainability AkzoNobel is consistently in the top of the Dow Jones Sustainability Index (DJSI) for the Materials industry group, being ranked no. 1 for several years in a row. Sustainability is used in our standard business processes and integrated in our strategy and management tools. The entire value chain, from raw material extraction to disposal or recycling of end-products is managed with sustainability goals and targets in mind. We view safety and security management as part of this standard and promote healthy social values that reflect the way in which we conduct our business and develop our employees. We deliver open communication with stakeholders through reporting and verification. Please visit our website to learn more about our company and our commitment to Sustainability. Regarding Depramin specifically, Depramin is a biodegradable, high-performance polymer derived from renewable cotton and wood cellulose. We use cellulose from reliable sources that meet standards set by the Forest Stewardship Council (FSC) and the Program for Endorsement of Forest Certification (PEFC). This ensures our use of the renewable resource is being managed responsibly.

4 Featured applications AkzoNobel Depramin is used as a depressant in ore flotation. With years of experience serving the mineral industry, we have a track record with different ore types, of which a few common examples are given below. Depramin Depressants in Froth Flotation Froth flotation is an important step in many mineral processing operations. ften, unwanted hydrophobic gangue materials such as talc, graphite, serpentine, chlorite, anhydrite and carbonaceous gangue are also recovered in the concentrate. Low levels of Depramin can be used to reduce the amount of gangue in the froth and increase the recovery of target minerals. Depramin works by selectively adsorbing onto the surface of the hydrophobic gangue materials rendering them more hydrophilic. nce hydrophilic, the gangue minerals are depressed in the circuit and do not float with the target minerals. Depramin in Potash re Potash ores often contain a portion of clay-type gangue minerals, known as slime. Depramin selectively adsorbs to the surface of the clay mineral and blocks the adsorption of cationic collectors to these clay minerals. This allows a lower use rate of collectors and a more effective flotation step. Depramin is used widely in the potash industry to increase recovery and reduce costs. Depramin in Nickel and Nickel-Copper res Naturally floating hydrophobic gangue minerals such as talc are present in most Nickel and Nickel-Copper res. Specifically engineered Depramin products depress these minerals by rendering their surface hydrophilic. This improves the selectivity of the flotation circuit and increases recovery of the target nickel ore.

5 Depramin in detail Depramin is AkzoNobel s range of carboxymethyl cellulose (CMC) polymer, specifically developed for ore flotation. It s a water soluble anionic polymer. Chemical structure of Depramin. The polymeric backbone of Depramin is a cellulose chain comprised of repeating anhydroglucose units. It is based on renewable resources and fully biodegradable. A single reaction step is needed to convert cellulose into the water soluble, anionic polymer carboxymethyl cellulose known as Depramin. The level of anionic groups added to the cellulose backbone can be varied and is referred to as the Degree of Substitution or DS. The length of the polymeric backbone influences the viscosity of a solution of Depramin. Longer and shorter chains change interaction of the polymer with the surface of the ore and how the ore behaves in the flotation cell. H H H H H N a N a N a H H H N a H H H

6 Depramin For more information see our website at Akzo Nobel Chemicals SpA Viale Gherzi Novara Italy T F AkzoNobel is a leading global paints and coatings company and a major producer of specialty chemicals. Calling on centuries of expertise, we supply industries and consumers worldwide with innovative products and sustainable technologies designed to meet the growing demands of our fast-changing planet. Headquartered in Amsterdam, the Netherlands, we have approximately 46,000 people in around 80 countries, while our portfolio includes well-known brands such as Dulux, Sikkens, International, Interpon and Eka. Consistently ranked as one of the leaders in the area of sustainability, we are committed to making life more liveable and our cities more human Akzo Nobel N.V. All rights reserved. Arnhem, Issue: ctober 2015 AN_202010_301015