Handling of Microsilica Slurry - Elkem

Elkem Materials – the reliable supplierElkem is the world's largest producer andsupplier of microsilica.Elkem Materials has production anddistribution facilities worldwide for ElkemMicrosilica.This broad selection of product qualities andseveral production and distribution facilitiesworldwide offers the user freedom of choiceand secure supply.Elkem Materials offers a total package to ourcustomer, including advice and guidancewith respect to material handling andtechnical assistance in manufacturing ofcementious materials for a variety ofapplications. Elkem's main research centrein Norway has a separate section assignedto R&D of microsilica, with laboratories andresearch specially dedicated to fibrecement.All Elkem Plants are certified according toISO 9000.Handling ofMicrosilica SlurryFibre CementFC1-04 GeneralThe information in this folder is meant as general guidelines for storingand handling Elkem Microsilica.For further technical information, our Furnace, Filtration and PowderTechnology department can be of service, either for specific assistance ordesign of complete units.®Elkem Microsilica – the key component in thedesign of superior fibre cement®EMSAC 500SDISCLAIMER:The information given on this datasheet is based on many years of researchand field experience and is accurate to the best knowledge of ElkemMaterials.However, due to the numerous factors that can affect the performance of afibre cement, with or without microsilica, Elkem Materials offers thisinformation without guarantee and accepts no liability for any direct orindirect damages from its use.If further information or assistance is required, please contact your localrepresentative or the office number given on this datasheet.®Elkem Microsilica is a registered trademark and belongs to Elkem MaterialsElkem ASA, MaterialsP.O.Box 8126, VaagsbygdN-4675 Kristiansand - NorwayTelephone: +47 38 01 75 00Telefax: +47 38 01 49 70Internet: www.fibrecement.elkem.comE-mail: fibrecement.materials@elkem.noElkemElkem

® ®Elkem Microsilica slurry: EMSAC 500SEMSAC 500S is a multi-benefit, superpozzolanic mineral additive for fibre cement basedmaterials.Elkem Microsilica originates from the production of silicon metal and ferro-silicon alloys.The material consists of amorphous, sub-micron, spherical particles and, in the original3state, has a ”fluffy” appearance with bulk density below 300 kg/m .To facilitate handling and dosing, the powder is further processed with water to produce astable slurry. The process is continuously monitored and controlled before shipment tostorage and distribution depots or customers.3EMSAC 500S, has a density of approx. 1400kg/m and 50% solids content by weight.Gooseneck for ventilation on silo top,min. ND 100.Arrangement for inspection and maintenanceof silo interior.Steel, plastic or rubber pipe, min. ND 100(plastic or rubber preferred due to corrosion).Filling pipe; easy to dismount for cleaning.Minimum pipe diameter100 mm (ND 100).JCirculationLevel switches formax./min. level.Max. size for this type of installation3(w/ pump circulation) is 60m , dia. max. 3.0m.With other arrangements, mechanicalagitation should be considered.Normal discharge by compressed air (2 bar).Alt. local compressor or pump.Connection hose min. ND 100.Storage tank temperature shouldo obe within the range 5 - 40 C.Connection system truck/tank to fit.Alarm when storage tankis full (light/sound).AirDrainageManually operatedservice valveTo MixerPossibility for injection of compressed airupstream from pump.Different pump types can be used. Purging ofsealing should be considered.Circulation system to silo preferably viaweigh bin, alt. from pump to filling pipe.®EMSAC 500SPumpAlternativecirculationSystem to be cleaned regularly.Drainage system for circulationpipes.DrainageAlarm