IMPROVED CARBON BONDED MGO MATERIALS AS SMART REFRACTORIES

RECYCLING PRACTICES OF SPENT MgO-C REFRACTORIES

The recycling options of spent MgO-C refractories from an electrical arc furnace (EAF) have been evaluated. The economic, quality of spent refractories and products made from it, the ease of implementation of a recycling practice and the interest of steel melt shops were considered. It was decided that the best option of most EAF shops would be to recycle spent MgO-C refractory as a foaming sla...

Phosphorus as a carbon copy and as a photocopy: New conjugated materials featuring multiply bonded phosphorus*

Phosphaalkenes (RP=CR 2) and diphosphenes (RP=PR) are main group analogues of alkenes (R2C=CR 2). Molecules featuring such multiply bonded phosphorus functionalities often display structural features and chemical reactivities that mimic their purely organic counterparts, lending credence to the claim that these compounds are “carbon copies”. We have been expanding this analogy to include oligom...

A Study on the Reaction between MgO Based Refractories and Slag -Towards the Development of Carbon-free Lining Material

MICROSTRUCTURE AND PROPERTIES OF COLLOIDAL SILICA BONDED MAGNESITE CASTABLE REFRACTORIES

Abstract: Efforts have been carried out in order to use microsilica to develop a forsterite bond rather than other types of binders in the basic refractory castables. According to the higher drying rate and sinterability of colloidal silica, it has been proposed in the recent years. In the present work, effects of replacement of microsilica by colloidal silica evolution of forsterite bond have ...

Porous Composite Materials ZrO2(MgO)-MgO for Osteoimplantology

The pore structure and phase composition of ceramic composite material ZrO2(Mg)-MgO at different sintering temperatures were studied. The main mechanical characteristics of the material were determined and it was shown that they are close to the characteristics of natural bone tissues. It was shown that material structure has a positive effect on the pre-osteoblast cells proliferation. In-vitro...

THE ROLE OF CARBON IN REFRACTORIES

Some of the scientific principles underlying the role of carbon and graphite in graphitic refractories are considered, with emphasis on the graphite phase. The highly anisotropic nature ofgraphite is a key factor in its ability to modify the properties of oxide refractories, resulting in the potential for anisotropy in the subsequent graphitic composite, depending upon the fabrication condition...