Refractory Free flowing castables

Free Flowing Castables

Name	MST °C	Chemical analysis (fired basis)				Cold Crushing Strength MN/m³			PLC% MST	W/MK^§ 1000°C	Density kg/m³	% Water addition	Max Grain Size mm
Name	MST °C	Al₂O₃	SiO₂	Fe₂O₃	Misc	Dry	1000°C	MST	PLC% MST	W/MK^§ 1000°C	Density kg/m³	% Water addition	Max Grain Size mm
Jonflo 90	1800	90.2	8.0	0.1		100	135	170	-0.8	2.20	3200	3.5-5	5
Jonflo 95SP	1800	94.4	0.2	0.1	MgO 3.6	25	25	100	-0.6	2.10	2900	5-7	5
Jonflo 97	1850	97.2	0.2	0.1		50	45	55	-1.2	2.25	3150	6-8	6
Jonflo 80	1700	80.3	13.0	1.3		80	110	170	-1.0	1.95	2650	6-8	5
Jonflo 65	1650	64.8	29.6	0.9		58	85	102	+0.8	1.30	2500	5-7	5
Jonflo 55	1700	57.2	37.9	1.0		45	80	150	+0.4	1.33	2400	6-8	5
Jonflo 50	1600	48.5	48.9	0.7		45	75	120	-1.0	1.10	2300	6-8	5
Jonflo SiC 30	1500	28.4	36.5	1.2	SiC 30.7	40	75	75	+0.4	3.80	2500	6-8	5
Jonflo SiC 55	1500	20.0	17.1	1.0	SiC 56.7	40	75	75	+0.4	4.75	2500	6-8	5
Jonflo SiC 75	1500	13.8	9.7	1.5	SiC 72.3	50	75	80	+0.6	7.20	2600	6-8	5

^§ Thermal conductivity mean temperature 1000°C

Silicon Carbide is a non-stick material and also is very resistant to alkali attack

Magnesite in the form of alumina-mag spinel to resist siliceous slag attack

Sheffield Refractories Limited Jonflo free flowing castables share many of the benefits of low cement castables but require little or no vibration. These materials need to be installed using high energy paddle type mixer, and with precise water addition to produce optimum results. Mixers, supervisors and installers can be hired to place these materials. There are many products to chose from and our sales and technical staff will be happy to offer advice on materials for specific applications