MINTEQ INTERNATIONAL, INC.

Advanced Self-Flow & Shotcrete Materials Compared

to Traditional Gunnite

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.

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

OPTISHOT OPTISHOT

LOW MOISTURE, LOW ACCELERANT SHOTCRETE CASTABLESLOW MOISTURE, LOW ACCELERANT SHOTCRETE CASTABLES

PRODUCT TECHNOLOGYPRODUCT TECHNOLOGY

THE SHOTCRETE PROCESS

• Thoroughly Mix Material• Pump Material• Add Air/Accelerator at Nozzle• Nozzle/Application Technique• Curing/Dryout

ShotcreteShotcreteSystemSystem

750 cfm air750 cfm airmixer/pumpmixer/pump

accelerator pumpaccelerator pump

NO DUST, Minimal Rebound NO DUST, Minimal Rebound at Nozzleat Nozzle

Dry Material + Dry Material + Measured Water Measured Water Added to MixerAdded to Mixer

SHOTCRETE NOZZLE

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

material.material.

Most Advanced Dispersant TechnologyMost Advanced Dispersant Technology Critical Raw Material SelectionCritical Raw Material Selection Reduced HReduced H220 resulting in:0 resulting in:

• lower porositylower porosity

• improved physical propertiesimproved physical properties

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 0

123456789

Minteq Comp.

Accel %Water %

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

OPTISHOT PRODUCTS• Lowest Water

Content• Lowest Porosity• Highest Strength• Best Abrasion

Resistance• Best Chemical

Corrosion Resistance

02468

10121416

WATE

R %

POROSITY

ABRASION

OPTISHOT 60 OPTISHOT SiC 60OPTISHOT SiC 15

Higher Water Contents Create Higher porosity has a negative effect

on:

Strength

Corrosion Resistance

Alkali Penetration

REFRACTORY TECHNOLOGY• Why Does Minteq Material Succeed When

Competitors Fail?

– Superior Technology• Products

– OPTISHOT MATERIALS– STARSLICK

• System– PROCESS CONTROL– ENGINEERED INSTALLATION EQUIPMENT & FIELD

EXPERIENCE

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

MINTEQ Shotcrete Features 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

MINTEQ Shotcrete Benefits & MINTEQ Shotcrete Benefits & Customer ValueCustomer 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

60 % alumina, low cement60 % alumina, low cement OPTISHOT 60OPTISHOT 60 VERSAGUN 60VERSAGUN 60

Water Required ( % ) 5.0 – 5.5 Na

Installation Method SHOTCRETE Gunning

Manufacturer MINTEQ ANH / RHI / HWR

Bulk Density ( pcf )Bulk Density ( pcf ) after 230 Fafter 230 F after 1500 Fafter 1500 F

156156154154

148148

Modulus of Rupture ( psi )Modulus of Rupture ( psi ) after 230 Fafter 230 F after 1500 Fafter 1500 F after 2000 Fafter 2000 F after 2500 Fafter 2500 F

22002200220022002200220030003000

1650165013501350

Cold Crushing Strength ( psi )Cold Crushing Strength ( psi ) after 230 Fafter 230 F after 1500 Fafter 1500 F after 2000 Fafter 2000 F after 2500 Fafter 2500 F

1170011700101001010012400124001670016700

8600860067006700

Permanent Linear Change ( % )Permanent Linear Change ( % ) after 1500 Fafter 1500 F after 2000 Fafter 2000 F after 2500 Fafter 2500 F

-0.1-0.1-0.4-0.4+ 0.1+ 0.1

-0.2-0.2

Abrasion Loss ASTM C704 ( cc )Abrasion Loss ASTM C704 ( cc ) after 1500 Fafter 1500 F after 2300 Fafter 2300 F

3.83.84.94.9

11.011.0

Shotcrete versus Gunnite – Physical PropertiesShotcrete versus Gunnite – Physical Properties

AGGREGATE KILN

OPTISHOT 60OPTISHOT 60

Kruzite 70 % Kruzite 70 % alumina brickalumina brick

MINTEQ shotcrete shows 1.5 – 2.0” less wear than a 70 % MINTEQ shotcrete shows 1.5 – 2.0” less wear than a 70 % alumina firebrick after 1 year in the feed end of the kiln. alumina firebrick after 1 year in the feed end of the kiln.

Both materials were installed at the same time.Both materials were installed at the same time.