Lime shaft kilns are stationary vertical kilns where the raw limestone enters at the top and gravity flows through three thermally zoned sections known as the preheating, calcining, and cooling zones. The process heats the limestone from ambient temperature to 900°C, which is the point where the carbon dioxide is driven off, leaving calcium oxide, also known as quicklime. Modern kilns are typically one of three designs: single shaft, annular, or regenerative. Each respective design is progressively more energy efficient, but all are based on a countercurrent flow of hot air rising from the burners in the calcining zone through the downward material flow.

Our standard linings for vertical shaft kilns consist of wear-resistant hot-face linings and thermally efficient backup linings. This combination provides lime producers with an economical and tough refractory lining that can withstand the thermal and mechanical challenges present in a vertical shaft kiln. Our special magnesite bricks, NARMAG®, provide superior strength and abrasion resistance at high temperatures, while our KAST-O-LITE® family of insulating materials provides high-temperature insulation to optimize thermal efficiency.

Products
Vertical Shaft Kilns

Product SDS
‘SAIRBOND A dry, air-setting, fireclay mortar
‘SAIRSET A wet, air-setting, fireclay mortar
‘SAIRSET 3000 A high alumina air-setting mortar
ALAMO® CH Super Duty Fireclay Brick
CLIPPER® DP A super duty fireclay brick
CORAL® BP A burned, phosphate bonded 80% alumina brick
CORAL® PLASTIC 28-82 ADTECH® An 82% alumina, phosphate bonded refractory plastic
D-CAST® 85TMCC CASTABLE An ultra-low cement, high alumina castable English
EXPRESS®-27 PLUS A 50% alumina, cement bonded, self flowing castable
GREENLITE®-HS A high strength insulating firebrick
GREENTHERM 23 LI A 2300°F rated insulating firebrick
GUNTECH™ 60 60% lower-cement gun mix
GUNTECH™ 60Z Zirconia-containing 60% lower-cement gun mix English
HARBIDE A silicon carbide brick English
HARWACO BOND (DRY) A 50% alumina, air setting, dry mortar
HARWACO BOND (WET) A 50% alumina, air setting, wet mortar
KALA® A 50% alumina brick
KALA® HPC CHECKERS A 50% alumina brick
KRUZITE®-70 A 70% alumina brick
KX-99® A high fired, super duty fireclay brick
KX-99®-BF A high fired, super duty fireclay brick
MAGNEL® RS A magnesia spinel, burned brick
MAGNEL® ULTRA A magnesia spinel, burned brick
MAGNEL® ULTRA AF A magnesia spinel, burned brick English
NARCON® 65 CASTABLE A 65% alumina, low-cement castable
NARMAG® 95 CASTABLE A 95% magnesia castable English
NARMAG® CB MORTAR A chemically bonded, magnesia based mortar English
ON-LINE® 60 A 60% alumina, low-cement castable designed for rapid curing
SHOT-TECH® 60Z A high alumina, low-cement, zirconia containing shotcrete mix
SUPER NARMAG® B A 98% magnesia, burned brick
SUPER NARMAG® B CH A 98% magnesia, burned brick
THOR® AZS-PT ADTECH® A 14% zirconia, pumpable, low moisture castable
THOR® AZS-PT ADTECH® Pumpable, Low-Moisture, Special Zirconia-Mullite Castable
TUFSHOT® LI PLUS A fireclay based, conventional-cement, low iron gunning mix
UFALA® A 60% alumina brick shape
UFALA® A 60% alumina brick shape
ULTRA-GREEN® SR An 86% alumina, ultra-low cement castable English
VERSA-TECH 60G ON-LINE A 60% alumina, lower-cement, gunning mix English
VERSA-TECH 60G ON-LINE A 60% alumina, lower-cement, gunning mix English
VERSAFLOW® 45 C PLUS A coarse, fireclay-based, low-cement castable for high-abrasion environments
VERSAFLOW® 55/AR C PLUS A 55% alumina, coarse aggregate, low-cement castable English
VERSAFLOW® 60 PLUS A 60% alumina, low cement castable
VERSAFLOW® 80 C PLUS An 80% alumina, coarse aggregate, low-cement castable
VESTA A burned magnesia spinel brick English
VESTA HP A burned magnesia spinel brick English

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