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. LOW MOISTURE, LOW ACCELERANT SHOTCRETE CASTABLES
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 mixer/pump
Dry Material + Measured Water Added to Mixer
NO DUST, Minimal Rebound at Nozzle
accelerator pump
mixer/pump
750 cfm air

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
Whatever you need to remember to say

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 ( > 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
60 % alumina, low cement
OPTISHOT 60
VERSAGUN 60
Water Required ( % )
5.0 – 5.5 Na
Installation Method
SHOTCRETE
Gunning
Manufacturer
MINTEQ
ANH / RHI / HWR
Bulk Density ( pcf )
after 230 F
after 1500 F
156
154
148
Modulus of Rupture ( psi )
after 2000 F
after 2500 F
2200
3000
1650
1350
Cold Crushing Strength ( psi )
11700
10100
12400
16700
8600
6700
Permanent Linear Change ( % )
-0.1
-0.4
+ 0.1
-0.2
Abrasion Loss ASTM C704 ( cc )
after 2300 F
3.8
4.9
11.0

18. Kruzite 70 % alumina brick
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.