جرم های ریختنی کم سیمان (LCC)
جرم های ریختنی متداول به دلایل زیر برای کاربردهای متفاوت با وجود سیمان خلوص بالا مناسب نیستند:
- افزایش سیمان منجر به مصرف بیشتر آب و بالتبع آن کاهش استحکام و افزایش تخلخل جرم میشود.
- به دلیل تشکیل فازهای نقطه ذوب پایین کاهش دیرگدازی و استحکام دما بالا رخ میدهد.
- دهیدراته شدن سیمان در مدوده دمایی 900-300 درجه سلسیوس کاهش استحکام و کاهش دانسیته را تا قبل ایجاد پیوندهای سرامیکی به دنبال دارد.
ویژگیهای جرم های ریختنی کم سیمان
در ترکیب جرمهای نسوز LCC ، در کنار 8-5% سیمان مصرفی، از مواد ریزدانه نظیر سیلیکا فیوم، آلومینای راکتیو وآلومینای کلسایند استفاده میشود. درصد CaO در این جرمهای حدود 5/2-1% می باشد.مقدار مصرف آب در این جرمها پایین بوده و لذا استحکام زیاد و تخلخل پایینی داشته و مشکلات ناشی از خشک کردن و نفوذ پذیری در این جرمها رفع میشود. جایگزینی بخشی از سیمان بوسیله میکروسیلیس خواص جرمهای ریختنی را به طور محسوسی بدون کاهش درجه دیرگدازی بهبود میدهد. برخلاف جرمهای متداول که در محدوده دمایی متوسط استحکام خ.ود را ازدست میدهند، این جرمها در فرایند پیش پخت مستحکمتر می شوند.
کاربرد جرم های LCC
جرمهای ریختنی LCC در پاتیل‌های ذوب فولاد، آستر ایمنی تاندیش و هواکش مجرای مذاب، اتشدان کوره پیش گرم و پاتیل تورپدو به طور موفقیت آمیز استفاده میشود. همچنین در کوره های احیا مستقیم، کوره های فروسیلیس، گندله سازی، پاتیل ذوب آلومینیوم و حلقه های نگهدارنده کوره سیمان و پالایشگاه نفت بکار می‌رود.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A50LCC
General Properties (Download PDF)
Classification …………….……..…..……….. Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…………………..….……. 6-8
Main Chemical Component
Al2O3 (%) ………………………………………… 50
SiO2 (%) …………………………………………… 42
Fe2O3 (%) ……………………………………….. 1.7
CaO (%) ………………………………………….. 2.5
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1500
Bulk Density at 110 ºC (gr/cm³) ….. 2.35-2.45
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …………….. 550-750
After Firing at 1400 ºC ……………. 600-800
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ………. (-0.3) to (-0.1)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A60LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…………………..….……. 6-8
Main Chemical Component
Al2O3 (%) ………………………………………… 60
SiO2 (%) …………………………………………… 32
Fe2O3 (%) ……………………………………….. 1.8
CaO (%) ………………………………………….. 2.5
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1600
Bulk Density at 110 ºC (gr/cm³) ….. 2.40-2.60
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …………….. 600-800
After Firing at 1400 ºC ……………. 650-850
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ………. (-0.3) to (-0.1)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement CastablesARCAST 60ADLCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…………………..….……. 5-7
Main Chemical Component
Al2O3 (%) ………………………………………… 60
SiO2 (%) …………………………………………… 36
Fe2O3 (%) ……………………………………….. 1.0
CaO (%) ………………………………………….. 2.0
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1640
Bulk Density at 110 ºC (gr/cm³) ….. 2.60-2.80
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …………….. 650-850
After Firing at 1400 ºC ……………. 700-900
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A70LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 5.5-7.5
Main Chemical Component
Al2O3 (%) ………………………………………… 70
SiO2 (%) ………………………………………….. 22
Fe2O3 (%) …………………………………………. 2
CaO (%) ………………………………………….. 2.5
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1620
Bulk Density at 110 ºC (gr/cm³) ….. 2.45-2.65
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …………….. 650-850
After Firing at 1400 ºC ……………. 700-900
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ………. (-0.3) to (-0.1)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A80LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 5.5-7.5
Main Chemical Component
Al2O3 (%) ………………………………………… 80
SiO2 (%) ………………………………………… 11.5
Fe2O3 (%) …………………………………………. 2
CaO (%) ………………………………………….. 2.5
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1720
Bulk Density at 110 ºC (gr/cm³) ….. 2.65-2.85
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …………….. 700-900
After Firing at 1400 ºC ……………. 750-950
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A85LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 5.5-7.5
Main Chemical Component
Al2O3 (%) ………………………………………… 84
SiO2 (%) ………………………………………….. 9.5
Fe2O3 (%) …………………………………………. 2
CaO (%) ……………………………………………. 2
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1720
Bulk Density at 110 ºC (gr/cm³) ….. 2.65-2.85
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …………….. 700-900
After Firing at 1400 ºC ……………. 750-950
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A90LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 5.5-7.5
Main Chemical Component
Al2O3 (%) ………………………………………… 90
SiO2 (%) ………………………………………….. 6.8
Fe2O3 (%) …………………………………………. 1
CaO (%) ……………………………………………. 2
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1800
Bulk Density at 110 ºC (gr/cm³) ….. 2.75-2.95
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC …….….….. 800-1000
After Firing at 1400 ºC …….…….. 800-1000
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A94LCC-SFC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 4.5-6.5
Main Chemical Component
Al2O3 (%) ……………………………………… 93.5
SiO2 (%) ……………………………………………. 3
Fe2O3 (%) ………………………………………. 0.1
CaO (%) ……………………………………………. 2
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1860
Bulk Density at 110 ºC (gr/cm³) ….. 2.90-2.90
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC ……….…….. 450-550
After Firing at 1500 ºC ……….……. 550-650
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A94LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 4.5-6.5
Main Chemical Component
Al2O3 (%) ………………………………………… 94
SiO2 (%) ……………………………………………. 4
Fe2O3 (%) ………………………………………. 0.1
CaO (%) ………………………………………….. 1.6
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1860
Bulk Density at 110 ºC (gr/cm³) ….. 2.90-3.10
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC ………..….. 850-1050
After Firing at 1500 ºC ……..……. 850-1050
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
AZARSHAHAB REFRACTORIES CO.
Low Cement Castable
ARCAST A96LCC
General Properties (Download PDF)
Classification ……………..…..……….. High Alumina Castable
Description…Low Cement Hydraulic Bonded Refractory Castable
Raw Material Basis ………….…. Low Iron Chamotte / Bauxite
Bond ………………….….………………….…………. Hydraulic
Installing Method …………………………… Casting / Vibrating
Packaging ……….……….. 25 kg net weight multi proof sacks
Storage Life (Month) …………….…………………..……..….. 9
Grain Size (mm) ………………………………………….. Max 6
Water Required (%) …………….…..…………..….……. 4.0-6.0
Main Chemical Component
Al2O3 (%) ………………………………………… 96
SiO2 (%) ……………………………………………. 2
Fe2O3 (%) ………………………………………. 0.1
CaO (%) ………………………………………….. 1.5
Physical & Thermal Properties
Maximum Service Temperature (ºC) .… 1880
Bulk Density at 110 ºC (gr/cm³) ….. 2.95-3.15
Cold Crushing Strength (kg/cm²)
After Drying at 110 ºC ………..….. 850-1050
After Firing at 1500 ºC ……..……. 850-1050
Permanent Linear Change (%)
After Drying at 110 ºC …….……… Negligible
After Firing at 1000 ºC ……… (-0.2) to (+0.2)
All data subject to reasonable deviation and therefore, should not be used for specification purposes.
