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slag attack on refractory material in mexico

MgO Refractory Attack by Transient Non-saturated EAF Slag - Metallurgical and Materials …

2020/3/4· MgO-C refractory is widely used in the sidewalls of electric arc furnaces (EAF). The MgO refractory is readily attacked by a MgO-undersaturated slag. [ 1] Therefore, a MgO-saturated slag is usually preferred in EAF practice. A small degree of supersaturation, causing the slag to contain suspended solid magnesiowüstite, promotes slag foaming

CORROSION TESTS FOR REFRACTORY MATERIALS INTENDED …

Corrosion tests for refractory materials intended for the steel industry – A reiew Ceramics – Silikáty 64 (3) 278-288 (2020) 279(with the precipitation of new phases at the surface of the refractory brick). The former (direct) dissolution mode is usually faster and more

Basic slag attack of spinel-containing refractory castables - …

2011/8/1· 1. Introduction Pre-formed and in situ spinel (MgAl 2 O 4) containing refractory castables have being widely used as steel ladle linings, due to their high corrosion resistance to basic slag.Various authors , , , investigated the slag resistance and wear mechanisms of spinel castables, pointing out that optimal spinel content would be in the 20–25 wt% range.

Improved Refractories for Slagging Gasifiers in

that slag penetration and attack of the refractory is a primary cause of the rapid degradation of the refractory lining in slagging gasifiers.(1-8) Once slag infiltrates the refractory, changes in the mineralogy and/or physical characteristics of the

Refractory Materials Classified | African Pegmatite

Refractory materials is a broad term for any material that is broadly tolerant of high temperatures and is resistant to chemical attack at those high temperatures. There are many classes of refractory materials, and a wide array of materials that fall into those egories.

Improved Refractories for IGCC Power Systems

material (AlPO4, CrPO4, etc) to the matrix of a high-chrome refractory, we can reduce slag penetration to less than one-fifth that observed in an unmodified high-chrome refractory under identical conditions in laboratory exposure tests.

Basics of slag production - Article on the slag industry from Global Slag

2011/10/27· Slag from the production of ferrochrome is also included here; this material is produced in substantial tonnages and the main use of ferrochrome is in the steel industry. Slags also arise from other processes, particularly the smelting of non-ferrous metals, but these materials can be very different and each needs to be studied individually.

MgO Refractory Attack by Transient Non-saturated EAF Slag - Metallurgical and Materials …

2020/3/4· MgO-C refractory is widely used in the sidewalls of electric arc furnaces (EAF). The MgO refractory is readily attacked by a MgO-undersaturated slag. [ 1] Therefore, a MgO-saturated slag is usually preferred in EAF practice. A small degree of supersaturation, causing the slag to contain suspended solid magnesiowüstite, promotes slag foaming

Refratechnik - Slag conditioner

Slag conditioners. In order to minimize the attack on refractory material by aggressive slags, and to obtain an optimum degree of saturation in the slag, the use of reactive MgO has been established as an excellent solution. As a specialist for refractory products and process materials, Refratechnik has developed the special product REPROMAT

A Chapter in the Refractories Handbook, edited by Charles A. …

A Chapter in the Refractories Handbook, edited by Charles A. Schacht, and to be published by Marcel Dekker, Inc., New York, NY 10016 Corrosion of Refractories by Denis A. Brosnan, PhD, PE Clemson University Clemson, SC 29634-0971 Introduction

(PDF) Effect of Slag Impregnation on Thermal Degradations in …

Degradation in bauxite refractory linings used in steel plants is localized in the slag-impregnated zone of refractories. Depiction of the four different zones in the tested crucible obtained from

Basic slag attack of spinel-containing refractory castables - …

2011/8/1· 1. Introduction Pre-formed and in situ spinel (MgAl 2 O 4) containing refractory castables have being widely used as steel ladle linings, due to their high corrosion resistance to basic slag.Various authors , , , investigated the slag resistance and wear mechanisms of spinel castables, pointing out that optimal spinel content would be in the 20–25 wt% range.

Refractory lining of a Basic Oxygen Furnace – IspatGuru

2013/3/28· Refractory materials with resistance to high temperature slag attack along with oxidation resistance are required for the lining of this area. Pitch bonded, impregnated Mag-C based upon large crystal size MgO, high purity flake graphite and containing metal additions has given good results.

Basics of slag production - Article on the slag industry from Global Slag

2011/10/27· Slag from the production of ferrochrome is also included here; this material is produced in substantial tonnages and the main use of ferrochrome is in the steel industry. Slags also arise from other processes, particularly the smelting of non-ferrous metals, but these materials can be very different and each needs to be studied individually.

Basics of slag production - Article on the slag industry from Global …

2011/10/27· Slag from the production of ferrochrome is also included here; this material is produced in substantial tonnages and the main use of ferrochrome is in the steel industry. Slags also arise from other processes, particularly the smelting of non-ferrous metals, but these materials can be very different and each needs to be studied individually.

Interactions between coal-ash and burner quarls. Part 2: Resistance of different refractory materials to slag attack …

A high-chromium refractory material that provides improved resistance to coal slag penetration is presented. The refractory mixture comprises a blend of chromium oxide, aluminum oxide …

Slag conditioning effects on MgO–C refractory corrosion …

2013/9/1· Considering that most refractory materials applied in the ladles'' slag line are MgO–C bricks , , , one of the crucial aspects to minimize slag attack during the operational process of such equipment is to adjust the liquid composition in order to attain dual saturation (with respect to CaO–MgO) or …

CORROSION TESTS FOR REFRACTORY MATERIALS INTENDED …

Corrosion tests for refractory materials intended for the steel industry – A reiew Ceramics – Silikáty 64 (3) 278-288 (2020) 279(with the precipitation of new phases at the surface of the refractory brick). The former (direct) dissolution mode is usually faster and more

Basics of slag production - Article on the slag industry from Global Slag

2011/10/27· Slag from the production of ferrochrome is also included here; this material is produced in substantial tonnages and the main use of ferrochrome is in the steel industry. Slags also arise from other processes, particularly the smelting of non-ferrous metals, but these materials can be very different and each needs to be studied individually.

Refractory Materials Classified | African Pegmatite

Refractory materials is a broad term for any material that is broadly tolerant of high temperatures and is resistant to chemical attack at those high temperatures. There are many classes of refractory materials, and a wide array of materials that fall into those egories.

Wear Mechanisms of Carbon-Based Refractory Materials in SiMn …

ramming paste refractory reacted with slag, with preferential attack on and penetration into the binder phase rather than aggregate particles. The two types of carbon-based refractory materials showed similar extents of chemical reaction observed as wetting and

Refractory lining of a Basic Oxygen Furnace – IspatGuru

2013/3/28· Refractory materials with resistance to high temperature slag attack along with oxidation resistance are required for the lining of this area. Pitch bonded, impregnated Mag-C based upon large crystal size MgO, high purity flake graphite and containing metal additions has given good results.

How to Avoid Full Refractory System Failure in Wood Coustion …

2021/2/1· Refractory materials and engineering designs have successfully been used in wood-burning industries for The type and degree of slag attack will depend on the chemistry and fusion point of the

Wear Mechanisms of Carbon-Based Refractory Materials in SiMn …

ramming paste refractory reacted with slag, with preferential attack on and penetration into the binder phase rather than aggregate particles. The two types of carbon-based refractory materials showed similar extents of chemical reaction observed as wetting and

High temperature materials for magnetohydrodynamic channels

Materials for MHD channels 73 -tmm~ h./S"~/S~J .''i ~ - - - Dis~''o hoe Figure 2. Schematic of slag-coated channel wall showing variation in chemistry and properties through the wall. possess good electron emission characteristics. The

Refratechnik - Slag conditioner

Slag conditioners. In order to minimize the attack on refractory material by aggressive slags, and to obtain an optimum degree of saturation in the slag, the use of reactive MgO has been established as an excellent solution. As a specialist for refractory products and process materials, Refratechnik has developed the special product REPROMAT

(PDF) Effect of Slag Impregnation on Thermal Degradations in Refractories

Degradation in bauxite refractory linings used in steel plants is localized in the slag-impregnated zone of refractories. Depiction of the four different zones in the tested crucible obtained from

(PDF) The Wear of Tundish Stopper Refractories by Inclusion …

Slag attack on refractories usually involves wetting, penetration, dissolution and severe wear of refractories. Conventional refractory testing techniques, relying on post mortem analysis, provide

Refractory lining of a Basic Oxygen Furnace – IspatGuru

2013/3/28· Refractory materials with resistance to high temperature slag attack along with oxidation resistance are required for the lining of this area. Pitch bonded, impregnated Mag-C based upon large crystal size MgO, high purity flake graphite and containing metal additions has given good results.

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