Loading...
Search for:
dolomite
0.064 seconds
Recovery of Pure Magnesium Oxide from Brine Sources
, M.Sc. Thesis Sharif University of Technology ; Askari, Masoud (Supervisor) ; Nosheh, Mohammad (Co-Advisor)
Abstract
Today a significant portion of the world magnesia supply is produced by approximately 20 manufacturers by precipitation of magnesium hydroxide either from seawater or brine sources, which amounts to about 14% of the world magnesia production. The first synthetic magnesia production occurred along the French coast of the Mediterranean Sea, near Aiques-Mortes, operating sometime before 1885. Magnesium hydroxide was precipitated from seawater by reacting it with milk of lime in a continuous fashion using three sequential agitated reactors. Because of the abundance of brine resources enrich in Magnesium in our country, in this project, was tried to precipitate Magnesium Hydroxide from brine...
Studying the Effect of Carbon Nanotubes Addition on the Mechanical and Hydration Properties and Microstructure of Magnesia Doloma Refractories
,
M.Sc. Thesis
Sharif University of Technology
;
Nemati, Ali
(Supervisor)
Abstract
Magnesia-doloma refractories are alkaline products made by combining sintered or fused dolomite and magnesite. These refractories contain 50-80 wt% magnesium and a higher percentage of magnesium oxide, provides desirable properties such as improved refractoriness and resistance to air moisture absorption. Magnesia-doloma refractories have significant weaknesses, including rapid hydration due to the presence of CaO and MgO phases. These refractories are also primarily used with carbon additives in the industry, where increasing the carbon weight percentage in these refractories weakens their strength and some of mechanical properties. In the present study, the effect of adding carbon...