CFI Controlled Flow Inverted cone silo

Continuously operating storage silo

Free space under inverted cone bottom

Low maintenance costs

Main features

Continuously operating storage silo

Only two sixths, two eighths or two tenths of the silo bottom (depending on silo diameter) are aerated at the same time.

Controlled flow

Low maintenance costs

Free space under inverted cone bottom

• The specific power • The inverted cone type silo consumption is kept low by requires no columns under aerating only two sections at the silo bottom, which allows the same time. more space for equipment.

• The inverted cone at the silo • Each aeration section slopes base reduces the need for 15 degrees towards its aeration. outlet.

The aeration system includes • A large part of the silo filters that prevent material from contents is kept moving entering and eventually blocking during the extraction process up the entire aeration system.due to the change of outlet

every five minutes.

Improves quality and profitFLS has developed the CFI storage silo for cement and related products. The design of the CFI storage silo for cement and related products is based on experience gained with the CF (Controlled Flow) raw meal blending and storage silo.

The keyword in developing the CFI silo is reliability. The challenge facing the designer is to ensure that the silo empties one hundred per cent, while minimising the specific power consumption for aeration. The CFI meets this challenge in the following way:

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Filter for aeration

that cleans the air and prevents only operates while the airslide Descriptionmaterial from entering in case of is in use. The feed tank is Silos with diameters ranging pipe breakage inside the silo. aerated by a single rotary from 10 to 25 m are based on Two rotary blowers supply air to blower operating at a pressure the same overall configuration.the aeration boxes at a pressure of 0.8 bar. On the tank top is a of 0.8 bar. The air is distributed dedusting filter while the tank An elevator or an air controlled via a pipe system with two-way bottom has one or more lifting device continuously solenoid valves, one for each pneumatically regulated flow supplies material to the silo. The silo bottom section. The rotary control gates. These gates close top deck of the silo contains all blowers have noise-reduced quickly (within two seconds) and the necessary standard blow off pipes that let out the allow regulating the rate of flow components such as manholes, fluidisation air when the pres- to packers or bulk loading over- and underpressure valves, sure reaches a certain level. devices.and level indicators.

Each extraction outlet through The silo bottom is divided into the inverted cone is equipped six, eight or ten sections with aeration boxes and allows (depending on silo diameter), manual cleaning by air lances. each sloping 15 degrees Each outlet has a manually towards their respective outlets operated slide gate and a in the inverted cone. Each of the pneumatically regulated cut off sections is fitted with aeration gate. From the silo outlets the boxes. Two sections at a time material passes via airslides to are aerated for approximately 5 the feed tank. The airslides minutes. The air supply system each have a separate fan that to each section includes a filter

1. Sounding pipe2. Silopilot3. Manhole at silotop4. Pressure equalising valve5. Nivopilot6. Aeration7. Silo discharge8. Fluxoslide9. Tank10. Tank outlet11. Fluxoslide from tank12. Fluxo filling system13. Manhole14. Dedusting filter15. Rotary blower16. Filter for aeration

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From upgrades to Responding to market needs, the company is strengthening its complete plantsfocus on the three areas in F.L.Smidth supplies cutting-edge which the cement and various technology and high efficiency minerals processing industries equipment to the worldwide look to F.L.Smidth for leadership:cement industry. Nearly a third of

the world´s cement production + Complete projects requiring comes from plants and machin-process and detailed plant layout ery provided by F.L.Smidth. know-how, as well as practical Working from more than 100 operational experience.years´ experience, F.L.Smidth

masters all aspects of advanced + Competitive and reliable process and plant layout machines incorporating latest technology, assuring customers technological advances.of low energy consumption, high

availability and a quality end + Spares and timely services to product.assure customers of minimal Engineering and processes interruptions in operations, are adapted to individual thereby increasing customer requirements and local competitiveness and profitability.conditions, whether it is a

complete 10,000 tpd green field For further details, please cement plant, a single machine contact F.L.Smidth at one of the unit or a control system.following addresses:

Data in this brochure is intended for preliminary project planning only. The manufacturer reserves the right to modify equipment details and/or specifications without notice.

DENMARK F.L.Smidth & Co. A/SVigerslev Allé 77, DK-2500 Valby, CopenhagenTel: +45 - 36 18 10 00Fax: +45 - 36 30 18 20Internet: www.flsmidth.com

USA Fuller Company2040 Avenue C, Bethlehem,Pennsylvania 18017-2188Tel: +1 - 610-264-6011Fax: +1 - 610-264-6170

F.L.Smidth subsidiaries:BRAZIL F.L.Smidth Comércio e indústria Ltda.Tel: +55 - 11-532-8500Fax: +55 - 11-533-9612FRANCE F.L.Smidth-Fuller S.A.Tel: +33 - 1-4944-6800Fax: +33 - 1-4308-5099, +33 - 1-4308-5188GERMANY F.L.Smidth-Fuller GmbHTel: +49 - 211-591-038Fax: +49 - 211-593-223INDONESIA FLS Indonesia-Fuller IndonesiaTel: +62 - 21-251-2738 / 2739Fax: +62 - 21-251-2740MEXICO F.L.Smidth-Fuller Mexico, S.A. de C.V.Tel: +52 - 836-33150Fax: +52 - 836-33421PAKISTAN FLS Pakistan (Pvt.) Ltd.Tel: +92 - 51 29 31 95Fax: +92 - 51 29 31 96PHILIPPINES F.L.Smidth & Co. A/STel: + 63 - 2-824-7676Fax: +63 - 2-824-7676P. R. OF CHINA F.L.Smidth & Co. A/STel: 86 - 106 4677070Fax: 86 - 106 4677071SOUTH AFRICA Fuller-F.L.Smidth (PTY) Ltd.F.L.Smidth & Co. (SA) (PTY) Ltd.Tel: +27 - 11-679-2593Fax: +27 - 11-679-2611SPAIN F.L.Smidth & Cia Española, S.A.Tel: +34 - 91-634-90-00Fax: +34 - 91-636-11-50THAILANDc/o Advance Euro Co., Ltd.Tel: +66 - 2-714-1800Fax: +66 - 2-714-1807TURKEY F.L.Smidth & Co. A/S Liaison OfficeTel: +90 - 212-251-51-65Fax: +90 - 212-249-16-60UNITED KINGDOM F.L.Smidth-Fuller Ltd.Tel: +44 - 181-686-2422Fax: +44 - 181-681-7229

Licensees/joint venturesINDIA Larsen & Toubro Ltd. (Licensee)Cement Machinery Division, Powai WorksTel: +91 - 22-8581401Fax: +91 - 22-8581126

A member of the F.L.SMIDTH-FULLER ENGINEERING GROUP