Castables de ciment joase și ultra-scazute

Low and ultra-low Cement Castables have the characteristics of small pore size, large density, good volume stability, putere mare, and a small amount of water. They overcome the characteristics that the strength of ordinary castables decreases significantly at 800~1200 ℃, increases with the increase of temperature, and have excellent thermal shock resistance, slag resistance, and corrosion resistance.

Physical and chemical indicators

Articol		Index
Articol		Lut	Alumină ridicată	Corindon
Al₂O₃ %		≥45	≥75	≥98
CaO %		＜1.8	＜1.5	<1,0
Densitate în vrac g/cm³	110℃×24h	≥2.3	≥2.6	≥3,1
	1350℃×3h	≥2.26	≥2.61	/
	1550℃×3h	/	/	≥3.00
Rezistența la strivire la rece MPa	110℃×24h	≥70	≥75	≥85
	1350℃×3h	≥85	≥90	/
	1550℃×3h	/	/	≥100
Flexural Strength MPa	110℃×24h	≥6	≥8	≥9
	1350℃×3h	≥8	≥9	/
	1550℃×3h	/	/	≥11
Permanent linear change Rate %	1000℃×3h	-0.3	-0.2	-0.2
	1350℃×3h	±0.3	±0.5	/
	1550℃×3h	/	/	±0.5
Maximum service temperature ℃		1450	1600	1800

Low and ultra-low cement castable features

Refractaritate ridicată, temperatură ridicată, și rezistență la temperatură scăzută
Rezistenta la eroziune, rezistenta la impact, rezistență mare la uzură, putere mare
Plasticitate puternică, poate fi turnat în orice formă
Etanșeitate bună la aer, poate reduce pierderile de căldură și poate economisi energie

How to use castables？

Castables are generally poured and formed by on-site pouring, vibration, or tamping during use, and can also be made into prefabricated parts for use.

Low and ultra-low cement castables advantage

Low and ultra-low cement castables have strong cohesive force, long initial setting time and construction operation time, fast strength growth, strong impermeability, no need for acid treatment, easy to ensure the compactness of masonry ash gaps, and can significantly improve the blast furnace lining The airtightness of the wall, and the anti-corrosion ability of the lining.

Scope of application of castables

Low and ultra-low cement castables can be used in the steel industry, petrochemical industry, metallurgical industry, and power plant industry, with wide application and little restriction.