Produttore di cemento per forni refrattari

Refractory cement is also called high-temperature cement. The refractory degree of refractory cement is not less than 1580℃. Refractory cement is a clinker made by calcining bauxite and limestone as the main component, with calcium sulfate as the main component and an alumina content of 50%, and then ground into fine powder to make a fire-resistant hydraulic cementitious material. It can be used as a lining for cement rotary and other industrial kilns.

Types of refractory fire cement

Refractory cement can be divided into aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement, and dolomite refractory cement according to different compositions.

Physical and chemical indicators of refractory furnace cement

Calcium Aluminate Cement
		CA-65	CA-68	CA-70	CA-75	CA-80
Composizione chimica(%)	Al2O3	64-66	67-69	69-71	73-75	77-80
	CaO	32-34	29-31	27-29	23-25	18-20
	SiO2	1.8	1.2	0.3	0.3	0.3
	Fe2O3	0.6	0.6	0.3	0.3	0.3
Specific Surface(cm2/g)		4500	4500	5000	5500	7000
Setting time(H:min)	Initial setting(min)	0:40	0:40	0:40	0:45	0:45
	Final Setting(min)	8:00	8:00	10:00	10:00	10:00
Cold Modulus of Rupture(MPa)	24 hour	6.0min	6.0min	6.0min	6.0min	5.0min
	72 hour	8.0min	8.0min	8.0min	8.0min	6.0min
Forza di frantumazione a freddo(MPa)	24hour	45.0min	45.0min	45.0min	45.0min	35.0min
	72hour	70.0min	70.0min	70.0min	70.0min	60.0min
Refrattarietà(°C)		1680	1710	1730	1750	1770

Application of high-temperature cement

The main application areas of refractory cement are continuous high-temperature industries, such as steel smelting, glass production, produzione di cemento, furnace bodies, eccetera. Refractory cement is widely used in these fields because it can withstand harsh working environment conditions such as sustained high temperatures, high pressures, chemical corrosion, eccetera.

Things to note when baking refractory cement furnace lining

(1) At the normal temperature of 350°C, local bursting is most likely to occur, so special attention should be paid to slow baking. If a large amount of steam still emerges after insulation at 350°C, the heating rate should still be slowed down.
(2) Under conditions where ventilation is poor and water vapor cannot be easily discharged, the heat preservation time should be appropriately extended.
(3) When baking with heavy oil, be careful not to spray heavy oil on the surface of the furnace lining to prevent local bursting.
(4) When baking with firewood, direct contact with the flame often causes excessive local temperature rise and should be protected.
(5) The newly poured refractory cement must wait at least 3 days before baking.
(6) The cooling of the refractory cement furnace lining should also be slow and forced ventilation should be avoided.

Furnace cement packaging and shipping

Refractory cement is packaged in 25kg bags, which can also be customized, and then packaged in ton bags to facilitate transportation and transshipment.

Our other refractory materials

We are a Chinese refractory material manufacturer that can produce mattoni refrattari of different materials; ad esempio mattoni ad alto contenuto di allumina, mattoni di silice, mattoni di corindone, mattoni isolanti in mullite, mattoni di carbone di magnesia, eccetera. We can also produce unshaped refractory materials, ad esempio calcinabili, plastiche refrattarie, and refractory ramming materials; and can provide kiln insulation products; such as ceramic fiber blankets, pannelli in fibra ceramica, and can also give continuous ladle casting nozzles and other refractory materials.

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