Cement Plant Application Areas for Rotary Valves, Slide Gates and Dump Valves

source: CEMBUREAU, 1999

Rotary airlock valves (rotary valves / feeders) in a Cement Plant:

Coal Feeding For Clinker Processing
Very High Abresive,
80 kPa Pressure,
<95 micron particle size

  • 5 Bins — rotary feeders dosing corrective materials into the raw-mill feed.

  • 6 Raw Mill — under the raw-mill dedust filter/discharge.

  • 7 Dedusting (ESP) — discharge of collected raw-meal/kiln dust from the precipitator hoppers.

  • 9 Cyclone Preheater — meal/dust discharge from the cyclones.

  • 11 Coal (Mill) — under the coal-mill baghouse, plus pulverised-coal dosing to the kiln/calciner (this is a severe-duty / RFS-type point).

  • 14 Air-to-air cooling / 15 Dedusting — clinker-cooler dust discharge (hot, abrasive).

  • 16 (coal-mill dedust cyclone) — dust discharge.

  • 18 Cement Mill / 19 Filtering — cement-dust discharge from the mill filter/separator.

  • 20 Bulk Loading / 21 Packing — under the loading/packing dedust filters.

Fly Ash Handling
Very High Abresive,
15 kPa Pressure,
<4mm particle size
Temperature 200C

Alumina Processing
Very High Abrasive Alumina
15 kPa Pressure,
<45 mikron particle size
350C Fly Ash resistance

Clinker Feeding
Very High Abrasive
20 kPa Pressure,
<25 mm particle size
Air Seal Critical
Material Buildup and Clogging critical

RFSX ATEX Certified
RHX ATEX Certified

Fly Ash Boiler Feeding
Very High Abresive,
25 kPa Pressure,
<100 mikron particle size
350C Fly Ash resistance

Slide gates (isolation) in Cement Plants:

  • 3 Storage and 4 Additives — under the storage piles/corrective-material bins.

  • 5 Bins — bin outlets (above the feeders).

  • 8 Homogenizing — raw-meal silo outlet.

  • 16 Clinker Storage — clinker silo/bin outlet.

  • 17 Gypsum/Minerals — additive-bin outlets.

  • 18 Cement Mill feed and 20 Bulk Loading cement-silo outlets.

Anval SG
Opening sizes 350, 400, 450, 750 mm

100% Isolation
Heavy Duty Isolation
Anval Trigger Lock Sealing
15 kPa Pressure,
200C Temperature

Dump / flap valves (hot, abrasive, lumpy) in Cement Plants:

  • 13 / Clinker Cooling — hot clinker/dust discharge under the grate cooler.

  • 15 Cooler Dedusting — hot cooler-dust discharge.

  • 7 ESP and 9 preheater dust catcher — where the collected dust is hot (>150–200 °C).

Anval DH
Opening sizes: 150, 200, 250, 300, 350mm

Handling Hot Clinker In Cement Plant Cooling Under Grate System
Very High Abrasive,
15 kPa Pressure,
200C Temperature
<90 mm particle size

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