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MINTEQ INTERNATIONAL, INC.

MINTEQ INTERNATIONAL, INC. Advanced Self-Flow & Shotcrete Materials Compared to Traditional Gunnite. GUNNITE NOZZLE.

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MINTEQ INTERNATIONAL, INC.

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  1. MINTEQ INTERNATIONAL, INC. Advanced Self-Flow & Shotcrete Materials Compared to Traditional Gunnite

  2. GUNNITE NOZZLE Dry Material is pnuematically conveyed through large hose. Water is introduced and mixed with material at the nozzle via a water ring. Water addition is controlled via a valve at the nozzle.

  3. Refractory Gunnite Features • Simple Equipment, Easy Set Up • Nozzle can be up to 1000 ft. horizontally or 500 ft. vertically from the gun • Water added at the nozzle • Water addition ( and product quality ) is controlled by the nozzle operator. • Highly variable. • Subject to operator expertise. • Water / Material Mix time • Very dusty • Allows for castable refractory to be installed without forms • High Rebound & Waste ( 15 – 20 % ) • Slow Installation Rates • Average 2 tons per hour out of one machine if working efficiently • Physical properties very limited

  4. PRODUCT TECHNOLOGY OPTISHOT LOW MOISTURE, LOW ACCELERANT SHOTCRETE CASTABLES

  5. THE SHOTCRETE PROCESS • Thoroughly Mix Material • Pump Material • Add Air/Accelerator at Nozzle • Nozzle/Application Technique • Curing/Dryout

  6. Shotcrete System Dry Material + Measured Water Added to Mixer NO DUST, Minimal Rebound at Nozzle accelerator pump 750 cfm air mixer/pump

  7. SHOTCRETE NOZZLE Castable is mixed with pre-measured water in a high intensity pan style mixer and conveyed to the nozzle via a high pressure concrete pump. At the nozzle, compressed air and minimal accelerator are introduced to the material.

  8. MINTEQ Refractory "Shotcrete" Technology • Most Advanced Dispersant Technology • Critical Raw Material Selection • Reduced H20 resulting in: • lower porosity • improved physical properties

  9. WATER LEVEL IMPLICATIONS • High Water Levels Required to Install Gunnite and Competitive Shotcrete Materials Reduce Strength and Increase Porosity • High Water Levels Require High Accelerator Levels

  10. OPTISHOT PRODUCTS • Low Water Demand Equates to Very Low Accelerator Demand • Minteq’s Shotcrete Materials Retain Their Cast Properties • Minteq’s Materials Were Designed as Shotcrete Materials From The Start

  11. OPTISHOT PRODUCTS • Lowest Water Content • Lowest Porosity • Highest Strength • Best Abrasion Resistance • Best Chemical Corrosion Resistance

  12. Higher Water Contents Create Higher porosity has a negative effect on: Strength Corrosion Resistance Alkali Penetration

  13. REFRACTORY TECHNOLOGY • Why Does Minteq Material Succeed When Competitors Fail? • Superior Technology • Products • OPTISHOT MATERIALS • STARSLICK • System • PROCESS CONTROL • ENGINEERED INSTALLATION EQUIPMENT & FIELD EXPERIENCE

  14. SHOTCRETE PROCESS CURING/DRYOUT • Low Moisture Castable • 12-24 Hour Cure at Room Temperature (60-90°F) (not necessarily ambient) • Standard, Controlled Dryout • Dryout Schedule With Hold Points • FAST FIRE Shotcrete products allow for rapid dry-out / no hold periods

  15. MINTEQ Shotcrete Features • Rapid Installation Rates • 8-10 Tons Per Hour Through 1 Pump/nozzle • Improved Performance • “Cast” Lining System Without The Time Consuming Forms • No Dust • Minimal Rebound ( typically 2-5 % ) • FAST FIRE Shotcrete Products Allow for Reduced Dry-out Time • All Products Must Pass a Pumping Test • All Products Must Pass A Room Temp Workability Test ( >3 Hours ) • All Products Must Pass A Hot Stability Test ( > 90 minutes @ 90 F ) • All Technical Data Processed on Actual Pumped & “Shot” Panels

  16. MINTEQ Shotcrete Benefits & Customer Value • Improved Refractory Life / Furnace Performance • “Cast” Lining System Without The Forms • Reduced Refractory Waste During Installation • Reduced Furnace / Vessel Downtime • Reduced Curing & Dry-out With FAST FIRE Products • Increased OEE ( operating equipment efficiencies ) • Lower Operating Costs

  17. Shotcrete versus Gunnite – Physical Properties

  18. AGGREGATE KILN Kruzite 70 % alumina brick OPTISHOT 60 MINTEQ shotcrete shows 1.5 – 2.0” less wear than a 70 % alumina firebrick after 1 year in the feed end of the kiln. Both materials were installed at the same time.

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