Light weight mixes

Name of mix	Main component	Chemical composition, %				Density after firing at 800˚С, g /cm³	Cold crushing strength, N/mm²		Thermal conductivity at mean temperature 500˚С,W/m*K	Max. service temperature, ˚С
Al₂O₃	Main component	SiO₂	Fe₂O₃	CaO	3 days after molding	After firing at 800˚С
ALAKS 0.4-950	vermiculite, perlite	30	28	9	22	0.4	0.6	0.6	0.14	950
ALAKS 0.5-1000	vermiculite	32	21	12	24	0.5	1	0.8	0.15	1000
ALAKS 0.6-1000	vermiculite	33	16	13	25	0.6	1.5	1	0.16	1000
ALAKS .,7-1000	vermiculite	36	19	12	25	0.7	2	1.5	0.17	1000
ALAKS 0.8-1000	vermiculite, haydite	32	27	11	18	0.8	2.5	1.7	0.2	1000
ALAKS 0.8-1000A	vermiculite, haydite	36	28	6	18	0.8	2.5	1.5	0.2	1000
ALAKS 0.8-1000A/1,5	lightweight chamotte, perlite	43	31	1.5	21	0.8	4	3	0.2	1000
ALAKS 0.8-1250A	lightweight chamotte, perlite	49	34	1.2	12	0.8	3	2	0.2	1250
ALAKS 0.9-1000	vermiculite, haydite	32	30	11	17	0.9	5	3	0.22	1000
ALAKS 1.0-1000	vermiculite, haydite	32	30	11	17	1	7	3.5	0.24	1000
ALAKS 1.1-1100Т	vermiculite	36	33	8	19	1.1	8	8	0.27	1100
ALAKS 1.1-1150Т	perlite	35	29	10	18	1.1	12	10	0.27	1150
ALAKS 1.2-1150Н	haydite	33	30	11	17	1.2	20	15	0.3	1150
ALAKS 1.2-1200	lightweight chamotte, vermiculite	38	33	9	16	1.2	7	4	0.3	1200
ALAKS 1.2-1200Р	lightweight chamotte, vermiculite	38	39	8	13	1.2	5	3	0.3	1200
ALAKS 1.0-1250	lightweight chamotte	35	42	7	13	1	6	4	0.3	1250
ALAKS 1.0-1250S	lightweight chamotte	38	35	8	16	1	5	4	0.3	1250
ALAKS 1.0-1250AS	lightweight chamotte	51	33	1	12	1	10	7	0.3	1250
ALAKS 1.0-1350	lightweight chamotte	40	42	2	13	1	6	4	0.3	1350
ALAKS 1.2-1350	lightweight chamotte	41	41	2	13	1.2	10	7	0.4	1350
ALAKS 1.4-1250	lightweight chamotte	39	39	8	13	1.4	13	5	0.5	1250
ALAKS 1.4-1350	lightweight chamotte	43	40	3	12	1.4	13	8	0.5	1350
ALAKS 1.4-1350TI	lightweight chamotte	38	42	4	12	1.4	8	6	0.5	1350
ALAKS 1.6-1350	lightweight chamotte	43	41	2.5	11	1.6	22	14	0.6	1350
ALAKS 1.4-1400Н	lightweight chamotte, bubble alumina	77	9	0.5	12	1.4	30	30	0.55	1400
ALAKS 1.0-1500	Lightweight high alumina materials	85	0.2	0.2	14	1	3	3	0.3	1500
ALAKS 1.2-1500	lightweight chamotte, corundum	57	31	1	9	1.2	12	8	0.42	1500
ALAKS 1.4-1550	lightweight chamotte	67	21	0.8	9	1.4	17	12	0.52	1550
ALAKS 1.4-1800	bubble alumina	89	0.1	0.1	10	1.4	18	15	0.75	>1700
ALAKS 1.6-1800	bubble alumina	90	0.1	0.1	9	1.55	25	30	0.8	>1700
ALAKS 1.6-1800Т	bubble alumina	86	0.2	0.1	12	1.6	30	50	0.85	>1700
ALAKS 1.6-1800S	bubble alumina	90	0.1	0.1	9	1.65	30	30	0.9	>1700

ALAKS 0.4-950 ALAKS 0.5-1000 ALAKS 0.6-1000 ALAKS 0.7-1000 ALAKS 0.8-1000 ALAKS 0.9-1000 ALAKS 1.0-1000	Insulating castables with density from 0.4 g/cm3 to 1.0 g/cm3 and operating temperature from 950 to 1100°C. They have low thermal conductivity and quite high strength, retain their structure and properties in long-term operation. ALAKS 0.6-1000 and ALAKS 0.9-1000 castables belong to classes N and O according to ASTM C401 and represent castables of 1:0:6 and 1:2:4 popular series respectively. For twenty years of production ALAKS 0.9-1000 mix has become "classic" material for linings of fired heaters of various designs. It is recommended to use mixes with density less than 0.6 g/cm3 only in the inner lining layers. They provide highly efficient thermal insulation, as their thermal conductivity just slightly exceeds thermal conductivity of thermal insulating boards and fiber materials.
ALAKS 0.8-1000А ALAKS 0.8-1000А/1.5 ALAKS 0.8-1250А	Thermal insulating castables with density of about 0.8 g/cm3 and low or very low iron content, designed for usage in reducing atmosphere, for example, in catalytic reformers, hydrotreaters and syngas generation units.
ALAKS 1.1-1100T ALAKS 1.1-1150Т ALAKS 1.2-1150Н	High-strength lightweight castables designed for service in conditions of frequent temperature changes and moderate erosion impacts. ALAKS 1.2-1150Н mix can be applied only by casting, while ALAKS 1.1-1100Т and ALAKS 1.1-1150Т can be applied both by casting and gunning.
ALAKS 1.2-1200 ALAKS 1.2-1200Р	Vermiculite containing mixes designed for operation at temperatures up to 1200°С. The mix with “P” index is to be applied by patching, it is recommended for local repair works, and it is often used for linings of various boilers.
ALAKS 1.0-1250 ALAKS 1.0-1350 ALAKS 1.2-1350 ALAKS 1.4-1250 ALAKS 1.4-1350 ALAKS 1.6-1350	Light weight chamotte based mixes of different density and chemical composition. The mixes combine low thermal conductivity and high strength in relation to their density. They can be used in conditions of moderate abrasive impact. They are widely used in various industries both in inner and working lining layers of high-temperature furnaces. ALAKS 1.4-1350 and ALAKS 1.6-1350 mixes are often used in single-layer linings of FCCU reactors and regenerators.
ALAKS 1.0-1250S ALAKS 1.0-1250АS ALAKS 1.6-1800S	Self-flowing castables with low thermal conductivity. They flow without vibration. These mixes are indispensable for lining of large-sized structures of irregular shape as they easily fill hard-to-reach areas of a lining. ALAKS 1.0-1250AC is a self-flowing mix with low thermal conductivity, high strength, low iron content and low heat shrinkage. At long operation, it preserves compact structure with a small number of cracks, so it can be used for linings with complex configuration operated in hydrogen rich environment, for example, in syngas collectors.
ALAKS 1.4-1400Н ALAKS 1.0-1500 ALAKS 1.2-1500 ALAKS 1.4-1550	Light weight chamotte based castables (ALAKS 1.0-1500 – based on а porous high-alumina filler) operated at temperatures higher than 1400°C. Fine matrix of these castables has complex composition and is characterized by low Fe203 content, that is why they can be used in reducing atmosphere.
ALAKS 1.4-1800 ALAKS 1.6-1800 ALAKS 1.6-1800Т ALAKS 1.6-1800S	High-purity bubble alumina based castables designed for operation at extremely high temperatures or/and in reducing condition, including hydrogen atmosphere. ALAKS 1.6-1800 has strength comparable to the strength of dense castables and standard bricks. As its density is much lower, it can be used as an alternative to conventional dense alumina castables in order to reduce thickness, weight and cost of the lining. ALAKS 1.6-1800T can be applied by gunning, ALAKS 1.6-1800С, on the contrary, has very high flowability.