magnesium processing | Techniques & Methods | - + 150 bonus
    An insoluble magnesium hydroxide precipitates to the bottom of a settling tankwhence it is pumped as a slurry, filtered, converted to magnesium chloride by reaction with hydrochloric acidand dried in a series of evaporation steps to 25 percent water content. The basic reaction is:. The first successful industrial production was begun in Germany norsk hydro magnesium acid by Aluminium und Magnesiumfabrik Hemelingen, based on the electrolysis of molten carnallite. To utilize the magnesity grains in this suspension a corresponding quantity of acid must be added to the second leaching reactor. The dissolution reaction is finished in the second reactor. The carbon dioxide gas released by the reaction is led via the gas line 11 to the common scrubber 8, norsk hydro magnesium acid, while the fluid from the second reactor is led via an overflow line 12 to a first purification reactor. Mejdell, Glor T. By signing up, you agree to our Privacy Notice. A third object of the invention is to develop a process which makes it possible to use a broad range of magnesite ore, both cryptocrystalline as well as macrocrystalline. Metalany of a class of substances characterized by high electrical and thermal conductivity as well as gratis casino games downloaden malleability, ductility, and high reflectivity of light. The brine therefore must be low in Ca and alkali metals.
Casting and Extrusion Process
    In its pure form, magnesium lacks sufficient strength for most structural filtered, converted to magnesium chloride by reaction with hydrochloric acid, and In the Norsk Hydro process, impurities are first removed by precipitation and filtering. The latter is only feasible if chlorine or HCl acid can be used for other A block diagram for the new Norsk Hydro Magnesium process is shown in Figure 1.
norsk hydro magnesium acid

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ЗнакомстваFurther in the process, iron and other heavy metals are removed after oxidation, by precipitation as hydroxides. This is mixed with charcoal, formed into globules with the addition of magnesium chloride solution, and dried. In the figure the purification stages are shown consisting of one or several stirred tank reactors 13,14,15 in series with overflow lines 16,17,18 between these. Such a high content of mini crystals easily leads to exceeding the reactor capacity, leading to overfoaming caused by liberated carbon dioxide, a phenomena which is increased because the particles stabilize the foam production. The magnesite is dissolved by feeding hot, concentrated hydrochloric acid into the bottom of the reactor, and the resulting solution is drained off some distance below the top, in such a way that a layer of magnesite is situated above the fluid level. By extending…. The process according to claim 3, wherein the magnesium containing ore is a mixture of macro- and cryptocrystalline magnesites- in a ratio of 1: Start Your Free Trial Today.



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