Proven solutions in ore processing

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2 Proven solutions in ore processing Several customers rely on Larox solutions for their most demanding processes. Larox valves and pumps have proven their superior quality, reliability, excellent wear resistance and antijamming properties in these processes. Also hundreds of iron ore processing facilities have chosen Larox for their most demanding applications. Larox manual and automatic pinch valves excel in solutions where shut-off or control applications involve abrasive or corrosive slurries, powders or coarse substances. The number of design variations is virtually unlimited as the modular structure of Larox valves enables the selection of any actuator, valve body construction and sleeve material to fit specific process conditions. Larox knife gate and rotary disc valves are engineered to be used in shut/off applications involving abrasive or corrosive slurries, powders or coarse substances. Also our slurry non return range can be used for automatic isolation or change over of slurry lines. Larox peristaltic and progressive cavity pumps are applicable to a wide range of applications and they suit extremely well for processes involving industrial pumping, dosing and metering of abrasive, corrosive and other demanding media. From iron ore concentration... Larox valves and pumps are perfect for various duties ranging from grinding and filtration to flocculent dosing and thickener underflow in iron ore concentration including Grinding/Screening Hydrocyclone Separation Magnetic Separation Flotation Thickening Filtration Tailings Additional systems such as sampling, dosing and water treatment...to pelletisation Larox valves and pumps operate reliably and trouble free in the most demanding iron applications. Typical applications in pelletisation are Slurry mixing Slurry feed to pelletiser Coating Floor washing

3 Multiple benefits complicates the function of metal valves. The construction of the Larox valve ensures that the valve closes tightly even if coarse particles remain between the closing device. In the open position, the valve is actually a part of the pipeline. Larox valves have remarkably better wear resistance than metal or ceramic valves. As the sleeve is the only part in contact with the medium, Larox valves help to bring maintenance costs down to the bare minimum. heavy industrial duties, the Larox pumps are capable of handling the most abrasive and aggressive slurries with high solid content in iron ore processing. Larox pumps are also ideal for dosing and accurate metering of diverse slurries and wide range of other media. Larox valve is an excellent choice for applications where extreme abrasion and scaling are present. In iron ore processing, the flowing medium is typically very abrasive and Larox peristaltic and progressive cavity pumps incorporate an advanced design, which eliminates friction, minimizes wear and lowers energy consumption. Designed for Ore Concentration Primary cyclones Ore from mine Crushers Grinders Grinding Gravity Stockpile To concentrate Screening Flotation Magnetic separation Iron Ore Concentrate to Pelletising Filtration Tailings To tailing Cyclones

4 Robust, reliable and cost-effective Larox Flowsys is a trusted partner for a number of leading technology suppliers because its products add value and enhance process efficiency in customer s processes. Company s process and application expertise, certified manufacturing and delivery processes with comprehensive after sales services ensure reliable on-time deliveries regardless of the size of the delivery. because as a leading supplier Larox Flowsys is able to provide reduced total cost of ownership (TCO), which is ensured by high product quality, extended product lifetime, ease of installation, long service intervals, low Low Operational Costs maintenance costs and superior energy efficiency. Larox valves and pumps are an environmentally friendly and cost effective solution for demanding industrial flow control applications. Operationals Costs Larox Pinch Valve Ball Valve Driven by the will to solve problems Larox Flowsys is committed to growing together with its customers and partners; to understand and help make customers processes more competitive. This is a reality Larox pinch valve service interval in an automatic pressure filter, one cycle in every ten minutes (open-close). In this application DN is a typical pinch valve size. Pelletisation Slurry from dust collectors Additive Bin Thickener Slurry Addition Balling Feed Bins From Filtration Mixers Storage Silo Roller Screens Balling Discs To Grinding Mill Roller Feeder Product Pellets Pellet Stockyard Pellet Coating Conveyors Natural Gas Air Cooler Kiln bypass Kiln/ Furnance Fans Fans Travelling Grate Stack Cooling Fans Dust Collection

5 Larox valve success at LKAB At LKAB in northern Sweden, Kiruna, Jällivara and Svappavaara area, more than 1800 Larox valves are in operation. LKAB is an international high-tech minerals group, one of the world's leading producers of upgraded iron ore products for the steel industry and a growing supplier of industrial minerals products to other sectors. Since beginning of its operation LKAB has invested remarkably in the development of the equipment and production, and only the highest technology is accepted at the LKAB mines. iron slurry at bar to dewatering pressure filters. The valves operate every ten minutes, 24 hours/day. Proven wear resistance Larox valves were initially chosen at LKAB, because of high wear resistance, easy maintenance, simple and reliable construction, and absorption of vibration. The first Larox valves were delivered in 1992 and since then hundreds of conventional valves have been replaced by Larox valves. During the years Larox valves have proven to be extremely reliable, trouble-free and to be an extremely low cost solution in aggressive and abrasive conditions. Since 1992 the positive experiences have resulted in the selection of Larox Flowsys as one of the main valve and pump suppliers. Valves with different actuators The valve actuators are chosen according to the needs of every application. Under one of the main thickeners, twenty pneumatically operated valves are connected to a dedicated air supply tank. This arrangement ensures that the valves can be closed even in a case of a disturbance in the normal air supply. At the pelletising plant, the main feed line valves for large pressure filters were also delivered by Larox. These are hydraulically actuated 200 mm, PVE 200 H16 valves feeding Processes Grinding, in many stages. After grinding the main stream is in slurry form. Magnetig separation Flotation Phosphorus removal Filtration Pelletising Storage Tailings Train loading Applications Iron slurry Dirty water Bentonite & Lime Dolomite & Olivine Water Sand slurry Air

6 Working together with GIIC in Bahrain Larox pinch valves were chosen in 2008 when Gulf Industrial Investment Company (GIIC) was commissioning their second iron ore pelletising plant in the Kingdom of Bahrain. Larox pneumatically actuated PVE mm valves are operating in pellet coating and iron ore slurry lines as well as in various side applications. The GIIC plant provides the highest quality pellets to markets all over the world. GIIC values a valve supplier that is committed to working with them during the entire life cycle of the process plant. Among other things, this requires reliable spare part supply from a local stock delivered by a valve professional such as Larox Flowsys. Often large engineering and OEM suppliers make compromises with valves and other process instruments as this kind of equipment does not belong to their core experience. The global experienced contractors of GIIC were in this project able to take advantage of Larox Flowsys core knowledge, and the best flow control solution was built in cooperation. To ensure trouble-free and reliable operation of the equipment after commissioning, Larox Flowsys OEM & Projects Department works closely with leading mining equipment and engineering suppliers for the benefit of the end customer.

7 Our expertise for your benefit Wide variety of applications Global reach, local service Larox Flowsys Group is a major supplier of pinch valves and peristaltic pumps. With decades of experience in flow control and elastomer technology and over proven installations, the company has gained deep knowledge about the market as well as about customers processes. This know-how is continuously used to develop new technologies and thus foster customers businesses. Larox valves and pumps have proven their suitability for a wide range of industries and applications in mining and metal industry, non-metal minerals processing, pulp and paper, chemical process industries, cement industry, iron and steel, energy as well as oil and offshore industries. Numerous applications also exist in water, waste-water and effluent treatment, dairy, food and beverage production, and pharmaceutical processing plants. In addition, Larox Flowsys offers comprehensive after-sale service solutions for progressive cavity pumps in many process applications. Larox Flowsys Oy was established in 1993 as a subsidiary of Larox Oy. Today, Larox Flowsys Group, employs some 90 people and exports about 90% of the sales. Headquartered in Lappeenranta, Finland, Larox Flowsys has subsidiaries in Linthicum, Maryland USA and Anjalankoski, Finland. The global reach is ensured with the local sales and service network covering over fifty countries. The most important markets are in Europe, North and South America and Australia. Larox Flowsys focus is on abrasive, corrosive and other demanding shut-off, control and pumping applications. The company was the first pinch valve manufacturer in the world to get awarded the ISO9001: 2000 Quality Certificate in Larox Flowsys valves also meet the new Pinch valve standard ANSI/ISA

8 LAROX FLOWSYS OY P.O. BOX 338 FI LAPPEENRANTA, FINLAND TEL FAX LPP 10/08 DEU