PL5263B1 - The method of obtaining pure clay and alkaline carbonates or caustic alkali. - Google Patents
The method of obtaining pure clay and alkaline carbonates or caustic alkali. Download PDFInfo
- Publication number
- PL5263B1 PL5263B1 PL5263A PL526325A PL5263B1 PL 5263 B1 PL5263 B1 PL 5263B1 PL 5263 A PL5263 A PL 5263A PL 526325 A PL526325 A PL 526325A PL 5263 B1 PL5263 B1 PL 5263B1
- Authority
- PL
- Poland
- Prior art keywords
- clay
- alkali
- alkaline
- gases
- caustic alkali
- Prior art date
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- 239000004927 clay Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 13
- 239000003513 alkali Substances 0.000 title claims description 9
- 150000004649 carbonic acid derivatives Chemical class 0.000 title 1
- 239000003518 caustics Substances 0.000 title 1
- 239000007789 gas Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 3
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims 1
- 238000009835 boiling Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 239000001120 potassium sulphate Substances 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Description
Wiadomo, ze przez rozzarzenie minera¬ lów, zawierajacych glinke, np. bauksytu, z chlorkami alkaljów wzglednie z siarczana¬ mi alkaljów mozna otrzymac potaz i czy¬ sta glinke. Sposoby do przeprowadzenia te¬ go procesu nie znalazly jednak zastosowa¬ nia w technice, co prawdopodobnie nalezy przypisac tej okolicznosci, ze przeprowa¬ dzenie procesu jest bardzo klopotliwe, wy¬ maga skomplikowanych przyrzadów i ze do rozkladu siarczanu alkalicznego po¬ trzebny jest znaczny nadmiar glinki.W mysl niniejszego wynalazku wykry¬ to, ze glinke we wspomnianych powyzej mineralach udaje sie przeprowadzic prawie ilosciowo w glinian przez zarzenie z siar¬ czanami alkalicznemi, jezeli mieszanine, zawierajaca wspomniane substancje wyj¬ sciowe rozzarza sie w pradzie gazu, np. powietrza, gazów plomiennych albo temu podobnych gazach w obecnosci pary wod¬ nej i stosuje sie przytem temperature oko¬ lo 1100°C.Dalej znaleziono, ze przy stosowaniu tych zabiegów nie jest konieczne uzycie glinki w tak znacznym nadmiarze, jak przy znanym sposobie, przy którym uzywa sie okolo 2—3 czasteczek Al203 na 1 czastecz¬ ke Na20. W danym wypadku wystarcza stosowanie na 1 czasteczke Al2Os do 1,2 czastecz. tlenku alkalicznego w postaci siarczanów alkalicznych, co stanowi te sa¬ me warunki ilosciowe, jak przy znanym procesie Chatellier'a, przy którym tlenek alkaliczny stosuje sie w postaci soli.Przy zawierajacych znaczne ilosci kwa-su krzemowego mineralach do mieszaniny surowej, skladajacej sie z mineralu, zawie¬ rajacego glinke i siarczanu alkalicznego dodaje sie takie ilosci wapna w postaci wapna palonego, wodorotlenku albo soli wapniowych, ze na 1 czasteczke Si02 przy¬ padaja 2 czasteczki CaOi dla przeprowa¬ dzenia kwasu krzemowego w nierozpu¬ szczalny zwiazek.Otrzymany produkt przedstawia poro¬ wata mase, dajaca sie latwo rozdrabniac i lugowac woda. Z otrzymanego lugu, za¬ wierajacego glinian, mozna otrzymac glin¬ ke w znany sposób przez wydzielenie przy pomocy kwasu weglowego albo wedlug spo¬ sobu Bayer'a, przyczem w zaleznosci od sposobu, jaki sie stosuje, otrzymuje sie we¬ glan sodowy albo sode zraca, jako pro¬ dukt uboczny.Powstajace przytern gazy, zawierajace kwas siarkawy, zostaja w wiadomy spo^ sób zuzytkowane.Do przeprowadzenia powyzszego pro¬ cesu szczególnie korzystne okazalo sie stosowanie obrotowego pieca rurowego, który sie zasila sproszkowana masa suro¬ wa i ogrzewa gazem generatorowym, ropa albo pylem weglowym, przyczem jedno¬ czesnie doprowadza sie do gazów plomien¬ nych potrzebna ilosc pary wodnej. Moz¬ na jednak równiez poddac surowa miesza¬ nine w postaci brykietów w piecach pier¬ scieniowych dzialaniu gazów plomiennych w obecnosci pary wodnej.Przyklad I. 100 czesci francuskiego bauEsytu, zawierajacego 55% A/203 i 3% Si02i miesza sie z 82 czesciami siarczanu sodowego i 5,5 czesciami weglanu wapnio¬ wego (dla zwiazania kwasu krzemowego) i zarzy sie przy 1180°C w obrotowym pie¬ cu rurowym z paleniskiem gazowem przy jednoczesnem wprowadzaniu pary wodnej.Otrzymany produkt spiekania zawieral przy 40,96% Al203 40,02% nierozpuszczalnego Al2Os1 co odpowiada 98% uzytej glinki.Przyklad IL 100 czesci tego samego bauksytu z 5,5 czesciami weglanu wapnio¬ wego i 105 czesciami siarczanu potasowego po zbrykietowaniu zostaja zapomoca elek¬ trycznosci doprowadzone do 1150°C, po- czem produkt wystawia sie na dzialanie po¬ wietrza i pary wodnej.Produkt spiekania odpowiada 92% u- zytej glinki. PLIt is known that by incineration of clay minerals, for example bauxite, with alkali chloride or with alkali sulfates, potassium and pure clay can be obtained. The methods for carrying out this process, however, have not been applied in the art, which is probably due to the fact that the process is very troublesome, requires complicated equipment and that a considerable excess of clay is needed to decompose alkali sulphate. In the context of the present invention, it has been found that the clay in the above-mentioned minerals is able to convert almost quantitatively into alumina by bubbling with alkali sulphates, if the mixture containing the mentioned starting substances ignites in a current of gas, e.g. air, gases. flammable or similar gases in the presence of water vapor, and a temperature of about 1100 ° C is used. It has further been found that when using these treatments it is not necessary to use clay in such a large excess as in the known method in which about 2 to 3 molecules of Al 2 O 3 per 1 molecule of Na 2 O. In this case, it is sufficient to use Al2Os up to 1.2 particles per 1 molecule. of alkali oxide in the form of alkali sulphates, which are the same quantitative conditions as in the known Chatellier process, in which the alkali oxide is used in the form of a salt. In the case of minerals containing significant amounts of silicic acid, the crude mixture consists of of mineral containing clay and alkali sulphate, amounts of lime in the form of quicklime, hydroxide or calcium salts are added such that 2 CaOi particles per 1 SiO 2 molecule are added to transform the silicic acid into an insoluble compound. porous mass, easy to crush and leach water. From the clay-containing liquor obtained, clay can be obtained in a known manner by separation with carbonic acid or according to the Bayer method, for which, depending on the method used, sodium carbonate or soda ash can be obtained. The resulting gases, containing sulfurous acid, are consciously utilized. To carry out the above process, it has proved particularly advantageous to use a rotary tubular furnace which is fed with pulverized raw material and heated with gas. gas or coal dust, while at the same time feeding the flammable gases to the required amount of water vapor. However, it is also possible to subject the raw mixture in the form of briquettes in annular furnaces to the action of flaming gases in the presence of steam. Example 1 100 parts of French BauSite containing 55% A / 203 and 3% SiO 2 and mixed with 82 parts of sulphate of sodium and 5.5 parts of calcium carbonate (to bind the silicic acid) and burned at 1180 ° C in a rotary tube furnace with a gas furnace with simultaneous introduction of steam. The resulting sintering product contained 40.96% Al 2 O 3 40, 02% insoluble Al2Os1 corresponding to 98% of the clay used Example IL 100 parts of the same bauxite with 5.5 parts of calcium carbonate and 105 parts of potassium sulphate after briquetting are brought to 1150 ° C by means of the electricity, whereby the product exposes air and water vapor. The sinter product corresponds to 92% of the clay used. PL
Claims (3)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL5263B1 true PL5263B1 (en) | 1926-08-31 |
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