The process of the present invention using a zirconium-silicon mixture for treating magnesium metal provides a high purity magnesium with an iron content specified at less …

The present invention is the discovery of a rapid, economical, highly efficient process, adapted to large scale plant operations for purifying a spray-dried magnesium chloride …

 · Effects of water purifying material waste and red mud on performance of magnesium phosphate cement ... Magnesium phosphate cement (MPC) is an inorganic cementing material ... 60% ± 5%) or water (temperature 20 °C ± 2 °C), and the curing periods were 1, 3, 7, 14, and 28 d. The process of MPC synthesis is displayed in Fig. 2. …

Purifying process for magnesium products . United States Patent 2019488 . Abstract: This invention relates generally to the purification of materials containing undesired ingredients, and is useful in certain industrial processes for the manufacture of uncontaminated products, such as relatively pure magnesiumhydroxide or other magnesium ...

 · The nano-magnesium carbonate for lubricant purifying and dispersing agent has good colloidal stability, purifying and dispersing properties with thermal oxidation stability. ... Due to the weak metallicity of magnesium than calcium, the carbonation process of nano magnesium carbonate in the preparation of lube oil clean dispersant is more ...

In the following description my process and apparatus for carrying out the same have been described as applied to the purification of magnesium hydroxide, not only because good …

Process for purifying magnesium . Jul 26, 1991 - The Dow Chemical Company. Hydrogen is essentially removed from molten magnesium by the use of a degassing step, thereby substantially avoiding the formation of zirconium hydride when zirconium and silicon are added to the molten magnesium, after the degassing, in order to precipitate iron ...

US2029898A - Method of purifying magnesium - Google Patents Method of purifying magnesium Download PDF Info Publication number US2029898A ... magnesium …

 · In a process for producing anhydrous magnesium chloride, the following combination of steps: drying impure salt containing hydrated magnesium chloride; establishing a solution of the hydrated magnesium chloride; removing insoluble impurities; reacting the solution of hydrated magnesium chloride at substantially ambient …

The present invention is the discovery of a rapid, economical, highly efficient process, adapted to large scale plant operations for purifying a spray-dried magnesium chloride salt such that the purified molten magnesium chloride may be used as an electrolyte in the production of substantially pure magnesium metal at high current efficiencies ...

 · A process for purifying magnesium chloride solution from calcium ions by liquid-liquid extraction using a solution of di-2-ethyl hexyl phosphoric acid in organic solvents has been developed for the processes of production of extra-pure magnesium oxide. This process as verified in laboratory, model and pilot scale is realized, at present, in ...

Hydrogen is essentially removed from molten magnesium by the use of a degassing step, thereby substantially avoiding the formation of zirconium hydride when zirconium and …

 · Magnesium alloy sheets have an increasing proportion of applications in automobiles due to their high specific strength. The usability of traditional welding processes and mechanical joining processes is restricted by the characteristic of magnesium alloy sheets. In order to improve the plasticity of magnesium alloy sheets and realize the …

Process for purifying molten magnesium chloride . Nov 25, 1974 - N L Industries, Inc. Spray-dried magnesium chloride salt containing minor amounts of impurities in the form of oxygen containing compounds including metal oxides and in particular particulate magnesium oxide, hydroxyl groups, and the like, is purified by forming a molten bath of ...

A process for producing magnesium low in iron contamination including contacting a magnesium melt with a combination of a zirconium material and a silicon material to reduce the iron contamination wit ... Method of purifying magnesium: : Schmidt et al. 75/63: Foreign References: SU416493A1: : SU665007A1: : 75/67R:

 · Magnesium alloys fulfill many of the requirements of automotive, medical, and 3C applications, all of which make use of the material's low density, which is about two-thirds that of aluminum alloys with accompanying high strength-to-weight ratios and other useful properties. For the automotive market, the main alloys used are AZ, AM, AE, and ...

 · Magnesium-based materials with exceptional properties are being widely used in the automotive and aerospace industries, as well as in electronic equipment and Mg-based implants. The development of many advanced engineering structures and precision devices prompts the demand for high-purity Mg with better performance and service. However, …

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 · The process for purifying gypsum suspensions, particularly those formed in a flue gas desulfurizing plant, includes feeding the gypsum suspension (9) to a first hydrocyclone (1), which is operated to produce an underflow (11) with a comparatively high underflow concentration and an overflow fed to a collecting tank (2). The underflow (11) …

 · At present, there are two main magnesium smelting methods: electrolytic method and reduction method. Compared with the electrolytic magnesium smelting process, the Pidgeon process has the advantages of simple and mature process flow, small investment, short construction period, multiple heat sources, good magnesium quality, …

 · There are four main processes in smelting magnesium via the Pidgeon process: calcination, pelleting, vacuum thermal reduction, and refining. (1) Calcination of dolomite: …

Hydrogen is essentially removed from molten magnesium by the use of a degassing step, thereby substantially avoiding the formation of zirconium hydride when zirconium and …

 · The U.S. Department of Energy's Office of Scientific and Technical Information

In a process for purifying raw brine containing dissolved strontium, calcium and magnesium impurities wherein the raw brine is treated by contacting the brine with sodium carbonate for precipitation of strontium and calcium carbonate, contacting the brine containing the strontium and calcium carbonate solids with sodium hydroxide for precipitation of …

 · This is an improvement in the process disclosed in U.S. Pat. No. 4,891,065 in which iron impurities in mol ten magnesium are lowered by using a binary interme tallic phase of a zirconium material and a silicon mate rial as an iron precipitating agent for the purpose of purifying the magnesium. U.S. Pat. No. 4,891,065 (here

 · Many of these applications require high-purity magnesium metal (99.99% and above). Currently, the methods of purifying magnesium mainly include the solvent refining method, zone melting, and the vacuum distillation method. The solvent refining method adopts the ability of certain metals or compounds to interact with the metal impurities in ...

In a process for the electrolytic production of metallic magnesium from fused magnesium chloride electrolyte, the method of purifying the magnesium chloride electrolyte prior to electrolysis which comprises charging the magnesium chloride into a purification furnace maintained at a temperature within the range of from 725° C. to 775° C ...

Actually the calcium hydrogen carbonate and magnesium hydrogen carbonate present in water are responsible for the hardness of water which decomposes on boiling and precipitates as calcium carbonate and magnesium carbonate. Distillation. It is the process of separating two liquids from a mixture. The liquids must have different boiling points.