our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

glass defects from refractory

(PDF) Glass melting furnace refractories and refractory

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...

More

Characterization and identification of local defects in glass

glass. The crystalline defects may be caused by the crys-tallization of the glass itself or by crystal formation from reactions with refractory material or contamination, or from undissolved raw materials, etc. Metallic inclusions originate either from metals used in the melting units (e.g.,electrode materials),from refractory Address for reprints:

More

GLASS MELTING FURNACE REFRACTORIES AND REFRACTORY

The refractory problems can cause glass defects dur-Journal of Chemical Technology and Metallurgy, 50, 4, 2015 406 ing the campaign. The defects which are determined by the refractory type and

More

Refractory corrosion and stability Glass property

The attack of molten glass on refractory materials is of prime importance to both the glassmaker and refractory manufacturer. Over a period of several years we have developed what are now regarded as the standard tests for the assessment of refractory corrosion. Two basic tests have been developed for the investigation of refractory attack, as follows: Corrosion Test This involves the

More

CHARACTERIZATION AND TESTING OF REFRACTORIES FOR GLASS

Glass-Contact Refractories. The chemical reactions on the surface of refractories take place between molten glass, fluxing agents, and/or volatile components. Erosion can follow; washing away refractory grains after the original bond has dissolved.

More

Fused Cast AZS Exudation And Glass Defects Refractory

Fused cast AZS block is the most widely used refractory material in the demanding areas. It is thought as the leading cause of knot and cord defects. Fused cast AZS exudation in glass contact is the main cause of impaired performance of AZS under particular...

More

glass defects from refractory hifilm.pl

glass defects from refractory Ball Mill Ball mills are used primary for single stage fine grinding, regrinding, and as the second stage in two stage grinding circuits.

More

Glass container defects Causes & remedies

line because of a manufacturing defect, the reputation of glass suffers, which results in a loss of customer goodwill. Remedies offered hopefully give you a basic understanding of defects and their causes. In some instances, several remedies may be needed to correct the causes. 2 3 The various parts of a container Finish This is the top of the container above the neck ring parting line. It

More

Common causes of refractory failure Engineer Live

Refractory materials and lining reliability are key to increasing the performance of fired heaters, incinerators, kilns and reactors across a range of industries. Not only can the right refractory lining optimise production yield and minimise energy costs, but it can also enable consistent high performance of a furnace over the lifecycle of the refractory lining, in some cases, for as long as

More

Glass defects caused by refractory material

Refractory material can make glass have streaks, kinds knots, bubble and so on. This article will talk about streak defect in glass. Beside contact upper space of melting kiln, glass liquid also

More

Reduction of solid defects in glass due to refractory

In production of flat glass, it is known that the corrosion of silica refractory results in defects in the glass. In particular, the action of alkali vapors from the molten glass upon silica refractories lining selected walls and the roof structure of a melting and refining furnace corrode the silica refractory. The product of such corrosion is sodium silicate glass. This glassy material runs

More

Defects in specialty and container glasses ScienceDirect

01/03/1986· Refractory defects The refractory industry uses very few elements present in the periodic table for glass-refractory manufacture. Thus the mineralogy of the refrac- tory stones is limited to the compounds and combinations of ZrO2, SiOz, Fig. 22. Celsian-leucite defect (175x). Fig. 23. Molybdenum defects (175x). J.F. Wosinski / Defects in specialty and container glasses 679 A1203, SnO2, MgO

More

Fused Cast AZS Exudation And Glass Defects Refractory

Fused cast AZS block is the most widely used refractory material in the demanding areas. It is thought as the leading cause of knot and cord defects. Fused cast AZS exudation in glass contact is the main cause of impaired performance of AZS under particular...

More

Boundary Layers Refractory/Glass Melt and Glass Defects

In this paper the formation of boundary layers and their behaviour regarding corrosion and glass defect potential of different refractory/glass melt combinations will be discussed. The reaction between refractories and glass melts is determined by the diffusion of the different ions from the glass melt into the refractory material and vice versa.

More

Refractory corrosion and stability Glass property

The attack of molten glass on refractory materials is of prime importance to both the glassmaker and refractory manufacturer. Over a period of several years we have developed what are now regarded as the standard tests for the assessment of refractory corrosion. Two basic tests have been developed for the investigation of refractory attack, as follows: Corrosion Test This involves the

More

Characterization and testing of refractories for glass

In general, the applications of CLM to refractories include the study of phase identification, distribution, and quantification; follow-up of refractory corrosion by slags and glasses; sintering effects upon thermal treatment; and glass defects (stones) and crystallization [15]. CLM can be used in conjunction with reflected-light (RL) and transmitted-light (TrL) methods to rapidly identify

More

SPECIAL REPORT/GLASS: Identifying Glass Defects

01/09/2010· Glass defects are typically unavoidable, but their occurrence must be minimized during the production of high-quality glasses. Common glass defects include bubbles, stones, knots, cords and cat scratches. One unusual stone defect in a pattern glass was recently discovered, and a scrupulous methodology was necessary to investigate its source. Numerous plate glass samples with white

More

Refractory Materials: Fused Cast AZS Exudation And Glass

Fused cast AZS block is the most widely used refractory material in the demanding areas. It is thought as the leading cause of knot and cord defects. Fused cast AZS exudation in glass contact is the main cause of impaired performance of AZS under particular working conditions. The main crystal phase of Fused cast AZS consists of corundum, baddeleyite and glass phase. The glass phase can reduce

More

CHARACTERIZATION AND TESTING OF REFRACTORIES FOR GLASS

M. Karakus, R. E. Moore, “Seeking Solutions to Glass Defects from Refractory Corrosion, the Glass Researcher, 7[2] 13-14; 17 (1998). Anais do 44º Congresso Brasileiro de Cerâmica 23809. 31 de maio a 4 de junho de 2000 São Pedro S.P. Anais do 44º Congresso Brasileiro de Cerâmica 23811 . 31 de maio a 4 de junho de 2000 São Pedro S.P. Figure 1. Refractory Loss Evaluation

More