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Feeder expendables

PD-Refractories offers a broad variety of formats and grades of high quality expendables in different zircon mullite, aluminum oxide and fused silica types. Different shaping processes are used for the production of the expendables: hand ramming, slip casting, vibro casting and isostatic pressing. All grades fired with the correct temperature after shaping and drying. Thus, they are granting a long service life and in addition together with the choosing of high quality raw materials, a low glass defect potential. Inserts for orifice rings in aluminum oxide or isostatic pressed zircon mullite and chromium oxide and for the spouts extend the life time considerably. P-D Refractories is considering for the material selection all important parameters including the appropriate operating conditions, the type of glass, the operating temperature and the requirements on the format.

Highlights

We offer the complete portfolio of feeder refractories: parts, insulations, mortars.
For more details please download: Refractories Catalogue download
Installation guides for all expendables are available upon request. Contact us email
New superior spout and orifice ring insulation castable is available download flyer
Full range of Microporous insulation panels for metering and standard spouts are available

Please contact us for more information

expendables@pd-group.com

PreForm insulation

PD PreForm shapes are manufactured from alkaline earth silicate wools, which have high solubility insimulated body fluids and hence carry no hazard classification. These wools are blended with specially selected organic binders to give flexible insulating shapes with exceptional characteristics.

Part Number	Metering Orifice Ring Series
59-95511	81 Series 8"/9" SG
59-95512	81 Series 8"/9" DG
59-95513	81 Series 8"/9" TG
59-95514	503/515 Series 10"/11" SG
59-95515	503/515 Series 10"/11" DG
59-95516	503/515 Series 10"/11" TG
59-95517	585 Series 13" DG (2-9/16“ to 3" Or. Dia.)
59-95518	585 Series 13" DG (2-9/16“ to 3" Or. Dia.)
59-95519	585 Series 13" DG/TG

Typical chemical analysis

Physical properties

	weight in %
SiO₂	75.0 - 80.0
CaO	-
MgO	17.0 - 28.0
Al₂O₃	-

Guide value	Unit	Value
Density	kg/cm³	< 350
Use limit temperature	°C	1200
Loss on ignition	w%	< 10.0
Thermal conductivity at	W/mK
600 °C		0.12
800 °C		0.18
1200 °C		0.26

Microtherm Spout Insulation Kits

MICROTHERM^® FBK are tailor made kits of microporous insulation for glass feeder bowls. The kits consist of different MICROTHERM^® materials, specially chosen to allow fast assembly on-site.
The formulation is an opacified blend of filament reinforced pyrogenic silica. MICROTHERM^® FBK is the reference in glass feeder bowl insulation and ensures optimised thermal performance during discharge from the forehearth, guaranteeing the best possible overall quality.

Micropore part Nr.	Soput type	Thickness
FBK-01	81 wide st.	13 mm
FBK-02	81 wide deep	26 mm
FBK-03	81 metering wide deep	13 mm
FBK-04	81 metering wide deep	26 mm
FBK-05	81 offset deep	26 mm

FBK-10	115 deep	13 mm
FBK-11	115 deep	26 mm

FBK-20	144 centerline deep	26 mm
FBK-21	144 centerline st.	26 mm
FBK-22	144 angular shearing st.	26 mm
FBK-23	144 angular shearing deep	26 mm

FBK-40	194 deep	13 mm
FBK-41	194 deep	26 mm
FBK-42	194 standard	13 mm
FBK-43	194 standard	26 mm

FBK-50	503 metering deep	13 mm
FBK-51	503 metering deep	26 mm walls, 13 mm base
FBK-52	503 deep	26 mm

FBK-60	515 metering deep	13 mm
FBK-61	515 metering deep	26 mm walls, 13 mm base

FBK-80	555 deep	26 mm
FBK-81	555 deep	13 mm

PD-IsoMix 137 M55h Insulation Castable

The PD-IsoMix 137 M55h material is a lightweight castable designed for orifice ring and spout insulation. It is a flowing castable, which allows the orifice ring or the spout refractory to be placed in the casing, and then the insulating material could be poured around it, filling even the smallest crevices. Setting time is around 1-2 hours on room temperature. In case of glass leakage, it stops the flow of the hot glass immediately, prevent the bigger damage.

Casing	Spout	Required material (kg)
81	81	50
144	144	25
503	503	50
515	515	50
555	555	65
555	503	65
555	515	65
585	503	90
585	515	75
585	585	65

Spouts with insert

The highest wear area in a spout is the lip surrounding the bottom aperture. If the orifice ring must be replaced after the lip has been corroded, it is impossible to stop the glass stream by lowering the feeder tube.
P-D Refractories offers spouts with CR or fused cast insert. Used in conjunction with ZM30F spout bodies. Inserted spouts have greater life span, 150 - 250% depending on production conditions.

Insert	Chemical analysis				Bulk density	Apparent porosity	CCS
Insert	Cr₂O₃	Al₂O₃	TiO₂	Fe₂O₃	g/cm3	Vol %	Mpa
CR90GE	90,0	-	4,0	-	4,1	20,0	120

Orifice Rings with insert

For pat lines – long run

Typically these lines manufacture beer and wine containers and account for approximately 10% of global installed IS Container machines.
P-D Refractories offers multiple orifice rings with very dense corundum inserts made of AL95TB or isostatically pressed chromium oxide CR90-GE. By using these special inserts orifice ring the saving going to be significant due to the less job changes during a campaign.
The lifetime could be 50-200% more with these inserts, depending on the glass conditions and temperature.

Insert	Chemical analysis				Bulk density	Apparent porosity	CCS
Insert	Cr₂O₃	Al₂O₃	TiO₂	Fe₂O₃	g/cm3	Vol %	Mpa
AL95TB	-	95,0	4,0	-	3,6	< 2	n.b.
CR90GE	90,0	-	4,0	-	4,1	20,0	120