SU256743A1 - METHOD OF OBTAINING MELATED MAGNESIUM OXIDE - Google Patents
METHOD OF OBTAINING MELATED MAGNESIUM OXIDEInfo
- Publication number
- SU256743A1 SU256743A1 SU1232809A SU1232809A SU256743A1 SU 256743 A1 SU256743 A1 SU 256743A1 SU 1232809 A SU1232809 A SU 1232809A SU 1232809 A SU1232809 A SU 1232809A SU 256743 A1 SU256743 A1 SU 256743A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnesium oxide
- melated
- obtaining
- aluminum
- fused magnesium
- Prior art date
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims description 18
- 239000000395 magnesium oxide Substances 0.000 title claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- ZLNQQNXFFQJAID-UHFFFAOYSA-L Magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 3
- 239000011776 magnesium carbonate Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
Description
Изобретение относитс к получению плавленой окиси магни , используемой дл изготовлени трубчатых электронагревателей.The invention relates to the production of fused magnesium oxide used to manufacture tubular electric heaters.
Известен способ получени плавленой окиси магни , состо щий в термической обработке магнезита с его разложением.A known method for producing fused magnesium oxide consists in the heat treatment of magnesite with its decomposition.
Однако этим способом получают продукт с высоким содержанием вредных примесей железа (0,35%).However, this method produces a product with a high content of harmful iron impurities (0.35%).
С целью устранени указанного недостатка предлагаетс процесс разложени вести в присутствии алюмини ; при этом алюминий предлагают вводить в количестве 3-5;о/о от веса плавленой окиси магни .To eliminate this drawback, a decomposition process is proposed to be carried out in the presence of aluminum; at the same time, aluminum is proposed to be introduced in the amount of 3-5; o / o of the weight of fused magnesium oxide.
Способ позвол ет снизить содержание примесей железа в 2-3 раза (до 0,12о/о).The method makes it possible to reduce the content of iron impurities by a factor of 2–3 (to 0.12 ° / o).
Пример. Магнезит (MgCOs) плав т в присутствии алюмини в количестве 3-5%Example. Magnesite (MgCOs) is melted in the presence of aluminum in the amount of 3-5%
от веса получаемого продукта. Получают плавленую окись магни следующего состава , о/„: MgO 96,7, СаО 1,74 AUOs 1,77, РегОз 0,12 и SiOs 0,18.by weight of the resulting product. Fused magnesium oxide of the following composition is obtained, o / „: MgO 96.7, CaO 1.74 AUOs 1.77, RegOz 0.12 and SiOs 0.18.
Удельное объемное сопротивление окиси магни при температуре 1000°С составл ет 5,7 106 ом/см.The specific volume resistance of magnesium oxide at a temperature of 1000 ° C is 5.7 × 106 ohm / cm.
Предмет изобретени Subject invention
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU256743A1 true SU256743A1 (en) |
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