Presentation on theme: "MINTEQ INTERNATIONAL, INC."— Presentation transcript:
1MINTEQ INTERNATIONAL, INC. Advanced Self-Flow & Shotcrete Materials Compared to Traditional Gunnite
2GUNNITE NOZZLEDry 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.
3Refractory Gunnite Features Simple Equipment, Easy Set UpNozzle can be up to 1000 ft. horizontally or 500 ft. vertically from the gunWater added at the nozzleWater addition ( and product quality ) is controlled by the nozzle operator.Highly variable.Subject to operator expertise.Water / Material Mix timeVery dustyAllows for castable refractory to be installed without formsHigh Rebound & Waste ( 15 – 20 % )Slow Installation RatesAverage 2 tons per hour out of one machine if working efficientlyPhysical properties very limited
5THE SHOTCRETE PROCESS Thoroughly Mix Material Pump Material Add Air/Accelerator at NozzleNozzle/Application TechniqueCuring/Dryout
6Shotcrete System mixer/pump Dry Material + Measured Water Added to MixerNO DUST, Minimal Rebound at Nozzleaccelerator pumpmixer/pump750 cfm air
7SHOTCRETE NOZZLECastable 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.
8MINTEQ Refractory "Shotcrete" Technology Most Advanced Dispersant TechnologyCritical Raw Material SelectionReduced H20 resulting in:lower porosityimproved physical propertiesWhatever you need to remember to say
9WATER LEVEL IMPLICATIONS High Water Levels Required to Install Gunnite and Competitive Shotcrete Materials Reduce Strength and Increase PorosityHigh Water Levels Require High Accelerator Levels
10OPTISHOT PRODUCTSLow Water Demand Equates to Very Low Accelerator DemandMinteq’s Shotcrete Materials Retain Their Cast PropertiesMinteq’s Materials Were Designed as Shotcrete Materials From The Start
11OPTISHOT PRODUCTS Lowest Water Content Lowest Porosity Highest StrengthBest Abrasion ResistanceBest Chemical Corrosion Resistance
12Higher Water Contents Create Higher porosity has a negative effect on: StrengthCorrosion ResistanceAlkali Penetration
13REFRACTORY TECHNOLOGY Why Does Minteq Material Succeed When Competitors Fail?Superior TechnologyProductsOPTISHOT MATERIALSSTARSLICKSystemPROCESS CONTROLENGINEERED INSTALLATION EQUIPMENT & FIELD EXPERIENCE
14SHOTCRETE PROCESS CURING/DRYOUT Low Moisture Castable12-24 Hour Cure at Room Temperature (60-90°F) (not necessarily ambient)Standard, Controlled DryoutDryout Schedule With Hold PointsFAST FIRE Shotcrete products allow for rapid dry-out / no hold periods
15MINTEQ Shotcrete Features Rapid Installation Rates8-10 Tons Per Hour Through 1 Pump/nozzleImproved Performance“Cast” Lining System Without The Time Consuming FormsNo DustMinimal Rebound ( typically 2-5 % )FAST FIRE Shotcrete Products Allow for Reduced Dry-out TimeAll Products Must Pass a Pumping TestAll Products Must Pass A Room Temp Workability Test ( >3 Hours )All Products Must Pass A Hot Stability Test ( > F )All Technical Data Processed on Actual Pumped & “Shot” Panels
16MINTEQ Shotcrete Benefits & Customer Value Improved Refractory Life / Furnace Performance“Cast” Lining System Without The FormsReduced Refractory Waste During InstallationReduced Furnace / Vessel DowntimeReduced Curing & Dry-out With FAST FIRE ProductsIncreased OEE ( operating equipment efficiencies )Lower Operating Costs
17Shotcrete versus Gunnite – Physical Properties 60 % alumina, low cementOPTISHOT 60VERSAGUN 60Water Required ( % )5.0 – 5.5NaInstallation MethodSHOTCRETEGunningManufacturerMINTEQANH / RHI / HWRBulk Density ( pcf )after 230 Fafter 1500 F156154148Modulus of Rupture ( psi )after 2000 Fafter 2500 F2200300016501350Cold Crushing Strength ( psi )1170010100124001670086006700Permanent Linear Change ( % )-0.1-0.4+ 0.1-0.2Abrasion Loss ASTM C704 ( cc )after 2300 F3.84.911.0
18Kruzite 70 % alumina brick AGGREGATE KILNKruzite 70 % alumina brickOPTISHOT 60MINTEQ 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.