PL19845B3 - The method of producing silica stones. - Google Patents
The method of producing silica stones. Download PDFInfo
- Publication number
- PL19845B3 PL19845B3 PL19845A PL1984532A PL19845B3 PL 19845 B3 PL19845 B3 PL 19845B3 PL 19845 A PL19845 A PL 19845A PL 1984532 A PL1984532 A PL 1984532A PL 19845 B3 PL19845 B3 PL 19845B3
- Authority
- PL
- Poland
- Prior art keywords
- oxide
- producing silica
- added
- silica
- silica stones
- Prior art date
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 19
- 239000000377 silicon dioxide Substances 0.000 title claims description 8
- 239000004575 stone Substances 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 7
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 5
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 2
- 238000010304 firing Methods 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000010453 quartz Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- MEYPRMGRFQCXHY-UHFFFAOYSA-N [Na].F[Si](F)(F)F Chemical compound [Na].F[Si](F)(F)F MEYPRMGRFQCXHY-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
, Najdluzszy czas trwania patentu do 20 listopada 1948 r.W patencie Nr 19334 opisano sposób wytwarzania kamieni krzemionkowych, po¬ legajacy na stosowaniu mieszaniny mas krzemionkowych, zlozonych przynajmniej z czterech tlenków, a mianowicie w miesza¬ ninie tej oprócz krzemionki i wapna znaj¬ duje sie tlenek potasowca i co najmniej jeszcze czwarty tlenek, np. tlenek zelaza lub magnezja. Oczywiscie, jak zwykle przy wyrobie kamieni krzemionkowych, stosuje sie przytem temperature okolo 1400° i wyz¬ sza. Okazalo sie, ze przy takim skladzie su¬ rowej masy wystarcza znacznie nizsze tem¬ peratury, które moga byc tern nizsze, im mniejszy jest wymagany stopien przetwo¬ rzenia kwarcu.Jezeli nie jest wymagany znaczny sto¬ pien przeksztalcenia kwarcu, to wystarcza juz temperatura okolo 1050°. Zamiast ob¬ nizenia temperatury mozna w wymienionej mieszaninie zmniejszyc zawartosc alkalji np. do ilosci tylko 0,1 — 0,3%.Przeksztalcenie kwarcu surowej masy przez podane tlenki moze sie odbywac w sposób jeszcze korzystniejszy, jesli tlenki te dodaje sie w postaci nierozpuszczalnejw wodzie. Jesli dodawac tlenek potasow- ca pod postacia zwyklej t soli rozpuszczal¬ nej w wodzie, wtedy podczas suszenia be¬ dzie on wraz z obecna w uformowanym przedmiocie woda ciagnal ku powierzchni kamienia, i tam bedzie sie zbieral, a nawet wykwital. Wnetrze kamienia moze przez to stac sie ubozsze w tlenek potasowca, na czem cierpi przeksztalcenie. Niedogodnosci tej mozna zapobiec w ten sposób, ze tlenek potasowca dodaje sie w postaci nierozpu¬ szczalnej w wodzie, np. w postaci krzemo- fluorku sodowego lub szkliwa sody, tlenku zelazawego i krzemionki. Mozna równiez dodac do szkliwa wapno, co jednak nie jest konieczne. Zwlaszcza dobrze wplywa na przeksztalcenie szkliwo, natomiast krze- mofluorek sodowy przeksztalca nie tak do¬ brze, nawet w obecnosci tlenku zelaza lub innego tlenku. Stosowanie nierozpuszczal¬ nych w wodzie mieszanin, uzywanych jako przeksztalcacze tlenków lub ich zwiazków, jest rekojmia równomiernego przeksztalca¬ nia i równomiernych wlasciwosci poszcze¬ gólnych czesci kamienia. PLThe longest term of the patent until November 20, 1948. Patent No. 19334 describes a method of producing silica stones, which consists in the use of a mixture of silica masses composed of at least four oxides, namely in this mixture, apart from silica and lime, an oxide potassium oxide and at least a fourth oxide, e.g. iron oxide or magnesia. Of course, as is usual for the manufacture of silica stones, a temperature of about 1400 ° and above is used. It turned out that with such a composition of the crude mass, much lower temperatures are sufficient, which may be lower, the lower the required degree of quartz conversion is required. If a significant degree of conversion of the quartz is not required, then a temperature of approx. 1050 °. Instead of lowering the temperature, it is possible to reduce the alkaline content of the mixture, e.g. to only 0.1-0.3%. The conversion of the raw quartz by the given oxides can be even more advantageous if these oxides are added in a water-insoluble form. . If potassium oxide is added in the form of a simple water-soluble salt, then during drying it, along with the water present in the formed object, will drag towards the surface of the stone, and there it will collect and even bloom. The interior of the stone can thereby become poorer in potassium oxide, from which it suffers the transformation. This disadvantage can be prevented by adding the potassium oxide in a water-insoluble form, for example in the form of sodium silicon fluoride or as glaze of soda, ferric oxide and silica. You can also add lime to the glaze, but it is not necessary. Especially good for the transformation of the enamel, while sodium silifluoride transforms not so well, even in the presence of iron oxide or other oxide. The use of water-insoluble mixtures used as transformers of the oxides or their compounds is a guarantee of uniform conversion and uniform properties of the individual parts of the stone. PL
Claims (3)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL19845B3 true PL19845B3 (en) | 1934-03-31 |
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