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glass defects from refractory

Glass defects originating from glass melt fused cast AZS refractory

Glass defects originating from glass melt fused cast AZS refractory interaction van Dijk F A G DOI 10 6100 IR417346 Published 01 01 1994 Document Version Publisher 39 s PDF also known as Version of Record includes final page issue and volume numbers Please check the document version of this publication

Solubility of glass tank refractories using a small Scholars 39 Mine

Heddell James Vincent quot Solubility of glass tank refractories using a small electrically heated furnace quot 1941 Bachelors Theses 130 The destruction of refractories by melting glass is of a physical and a chemical nature The melted between the blocks or defects in the surf ce of the blocks that glass can get into nbsp

Glass melt refractories interaction

of the corrosion and of the formation of glass defects Therefore the interaction between glass melts and refractory regarding the different influencing factors must be known These different factors are diffusion chemical solution formation of saturation concentration within the boundary layer refractory glass melt which leads nbsp

Refractories and Glass Defects Ceramic Industry Magazine

1 Jun 2005 A recent study of post campaign AZS refractory blocks from three types of glass melting furnaces is providing a better understanding of the link between AZS refractory corrosion and glass defects

Surfaces of refractory products modified by low IOPscience

disturbs the smooth operation of the furnace process resulting in glass defect formation Areas adjacent to the furnace throat are also considered to be contact zones because the refractory components while entering the glass mass say in a refining zone do not melt and generate glass defects too In not numerous contact nbsp

Refractory Degradation in Glass tank Melters A Survey of SciELO

Soviet produced fused cast refractory materials manufactured under reducing conditions during melting have a tendency to form defects when they are in contact with glass as a result of reactions with oxygen containing impurities 25 Alumina fused cast refractories formed bubbles after contact with the glass Specimens nbsp

SEFPRO Refractory Services for Glass Industries

Glass furnace drawing refractory blocks 39 positioning glass defects analysis hot and cold repairs refractory waste management glass furnace shutdown expertise SEFPRO offers you reinforced support during your glass furnace lifetime

About Us JTF Microscopy petrographic analysis glass defects

JTF Microscopy provides microanalytical services to the glass raw materials refractory recycling and related industries We specialize in identification and analysis of defects and contaminants in glass refractory products and raw materials

TC11 Materials for Furnaces International Commission on Glass

Burak Izmirlioglu Refractories Glass Defects and Post Mortem Works Bubble formation on fused cast AZS Silica stone Michael Dunkl Ken Watanabe and Jean Pierre Meynckens Non destructive measurement of refractory materials and measurement of the residual wall thickness Measurement with Ground Penetration nbsp

Defects and Contamination Analysis Glass Technology Services Ltd

Analysis of a range of solid gaseous and surface defects and inclusions for all types of glass from compositional analysis of inclusions ston

Determination of the source and the means of NIST Page

stones or lumps in glass are described and photomicrographs of stones originating from devitrification of the glass incomplete solution of batch constituents and incorporation in the glass of refractory wall material are reproduced Methods of determining the locationin theglass making system of the source of stones

Refractory products for glass industry

Products services and tecnology for the glass Industry

Refractory Selection for the Container Glass Furnace glassonweb

Generally container glass furnaces employ silica brick in the crown due to its good mechanical properties at high temperature and good creep resistance Sometimes fused cast AZS 33 is also used in the superstructure The drawback is the exudation of the glass phase which will cause glass defects nbsp

GS Group Masso Defects Refractory Technology Glass Service

Glass Defects Refractory amp Technology Training 4 – 8 September 2017 │ Lyon Glass Service GS FlammaTec FT F I C UK FIC GEM Projects GEM Vidrio Engineering VE Comercial Quimica Masso MASSO A AGENDA 4 DAYS TRAINING 1 GLASS MELTING TECHNOLOGY MONDAY 4TH SEPTEMBER

Emhart Glass Base Defects Stones

Some Possible Causes Refractories from the furnace or forehearth are falling into the molten glass Batch materials are contaminated or incorrectly melted Furnace pull may be too high Flames impinging on furnace refractories Contaminated cullet Note The production personnel cannot cure this defect but it must be nbsp

Hot Bottom Repairs Performance Case Study amp Development of

Bryn Snow Harbison Walker International Formerly North American Refractories Hot Bottom Repairs Performance Case Study amp Development of FosKast applied onto the furnace bottom under hot conditions ➢ Restores floor thickness in situ and allows the glass manufacturer to continue producing glass without nbsp

Silica Crown Refractory Corrosion in Glass Melting Furnaces

Keywords Crown refractories α quartz Tridymite Cristobalite Corrosion 1 Introduction Silica is preferred material for crown construction of glass melting furnaces in terms of cost strength and of defect potential Corrosion of refractory silica brick of glass melting furnaces is a serious problem because the degradation of nbsp

Guide to Container Defects Bucher Emhart Glass

Emhart Glass SA Hinterbergstrasse 22 CH6330 Cham Switzerland Telephone 41 41 749 42 00 www bucheremhartglass com P0004 blown up Shoulder Defects BAFFLE MARKS A rough or damaged baffle seam on the bottom of the container STONES Small pieces of refractory or unmelted batch materials

Glass melting furnace refractories and refractory related defects

15 May 2015 monly used in the glass furnaces The refractories used in glass furnaces are in contact with the glass the superstructure the crown and the regenerator materials and which is why they are constrained to chemical physical as well as thermal effects Glass defects occur in many different forms while the nbsp

Unusual behaviour of knots in a float glass furnace

of defects in a glass melting furnace is always tricky When the defects are knots containing alumina and zirconia the problem is often one of determining whether the source is glass contact or superstructure AZS refractory If the source is the superstructure then the alumina in the in situ defect is higher than in the glassy nbsp