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Method of protecting carbon-containing component parts of metallurgical units from oxidation
| Details |
Inventors: Kolesnik, Mikhail I.; Egorov, Anatoly P.; Kuznetsov, Anatoly A.; Gobov, Anatoly P.; Ryabukhin, Jury M.; Rudakov, Viktor A.; Pisarev, Gennady V.; Zheleznov, Jury M.; Vasiliev, Alexei V.;
Assignee:
Primary Examiner: Lusignan; Michael R.
Assistant Examiner:
Attorney, Agent or Firm: Steinberg & Raskin
A method of protecting carbon-containing component parts of metallurgical units from oxidation comprises impregnating a component part with orthophosphoric acid to form a glassy mass in the pores of the component part when the latter is heated, drying the component part until the moisture is removed from the pores thereof, additionally impregnating the component part with an elemental organic compound comprising an element: Si, or Ti, or Al and capable of forming a phosphate, and heating the impregnated component part to the temperature at which phosphates are formed. |
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DETAILED DESCRIPTION OF THE EMBODIMENT The invention will now be explained in greater detail with reference to particular examples of accomplishing the method of protecting carbon-containing component parts of metallurgical units from oxidation, according to the invention.
EXAMPLE 1 A machined, graphitized electrode of rectangular cross-section intended to serve as an anode in the electrolytic production of magnesium was installed in a vessel containing industrial orthophosphoric acid and impregnated with said acid at a temperature of 80.
degree.
C.
until 92 to 94% of the pores of the electrode were filled up.
After pouring the orthophosphoric acid out, the electrode was dried at a temperature of 180.
degree.
C.
until the moisture was removed from the pores.
Thereafter, the above vessel was filled with a solution of an organoelement compound, in this case with a solution of polytitanophenyl siloxane resin in a mixture of toluene and butanol, and the electrode was additionally impregnated until a weight gain of not less than 18% per the portion being impregnated was obtained.
The additional impregnation was carried out by applying the solution of polytitanophenyl siloxane resin to the surface of the component part with a brush or roller.
Having been additionally impregnated the electrode was heated to a temperature of 350.
degree.
C.
The prepared graphitized electrode was installed in the ceiling floor of an electrolytic cell for the production of magnesium.
The service life of the electrode described in this Example amounted to 15 months, i.
e.
1.
5 times as high as the service life of an electrode impregnated with orthophosphoric acid only.
EXAMPLE 2 A machined, graphitized electrode of rectangular cross-section intended to serve as an anode in the electrolytic production of magnesium was installed in a vessel containing industrial orthophosphoric acid and impregnated with said acid at a temperature thereof amounting to 80.
degree.
C.
until 92 to 94% of the pores of the electrode were filled up
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