ISSN:
1573-9066
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions It is shown that goethite (yellow ferrie oxide pigment) synthesis by an ammoniacal method offers a suitable means of obtaining, from technical iron vitriol, high-purity ferric oxide with stable properties fulfilling the requirements for ferrite-grade ferric oxide. The ferric oxide is distinguished by its high reactivity after high-temperature (850–900°C) heat treatment. Its physicochemical properties are close to those of 1360 WF grade ferric oxide manufactured by the Bayer Co. of West Germany [5]. The key process parameters in the production of ferric oxide by this method are: goethite synthesis pH 4.0–4.5, synthesis temperature 70–75°C, amount of seed 8–10% of the goethite content at the end of synthesis, and ferric oxide calcining temperature 850–900°C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01178205
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