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1. WO1996002463 - STABILIZED, PRESSURE-HYDRATED MAGNESIUM HYDROXIDE SLURRY FROM BURNT MAGNESITE AND PROCESS FOR ITS PRODUCTION

Publication Number WO/1996/002463
Publication Date 01.02.1996
International Application No. PCT/US1995/008248
International Filing Date 30.06.1995
Chapter 2 Demand Filed 08.02.1996
IPC
C01F 5/16 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE EARTH METALS
5Compounds of magnesium
14Magnesium hydroxide
16by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium
CPC
C01F 5/16
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
5Compounds of magnesium
14Magnesium hydroxide
16by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium
C01P 2006/22
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2006Physical properties of inorganic compounds
22Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
Applicants
  • MARTIN MARIETTA MAGNESIA SPECIALTIES INC. [US/US]; 2710 Wycliff Road Raleigh, NC 27607, US
Inventors
  • WITKOWSKI, Joseph, T.; US
  • SMITH, David, M.; US
  • WAJER, Mark, T.; US
Agents
  • SAJOVEC, F., Michael ; Bell, Seltzer, Park & Gibson P.O. Drawer 34009 Charlotte, NC 28234, US
Priority Data
08/275,47315.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) STABILIZED, PRESSURE-HYDRATED MAGNESIUM HYDROXIDE SLURRY FROM BURNT MAGNESITE AND PROCESS FOR ITS PRODUCTION
(FR) BOUE D'HYDROXYDE DE MAGNESIUM STABILISEE, HYDRATEE SOUS PRESSION, OBTENUE A PARTIR DE MAGNESITE NATURELLE CALCINEE ET SON PROCEDE D'ELABORATION
Abstract
(EN)
A stabilized, pressure-hydrated magnesium hydroxide slurry and a process for its production from burnt magnesite are described. According to an embodiment of the invention, a mixture comprising burnt natural magnesite and water is pressure-hydrated to provide a pressure-hydrated slurry. The pressure-hydrated slurry is then deagglomerated. If desired, chloride ions and cationic polymer can be added to further stabilize the slurry.
(FR)
Boue d'hydroxyde de magnésium stabilisée, hydratée sous pression, et son procédé d'élaboration à partir de magnésite naturelle calcinée. Dans un mode de réalisation de l'invention, ladite magnésite mélangée à de l'eau est hydratée sous pression pour donner une boue hydratée sous pression qui est ensuite désagrégée. Le cas échéant, on ajoute à la boue des polymères cationiques et des ions chlorure si on souhaite en renforcer la stabilité.
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