DE303870C - - Google Patents
Info
- Publication number
- DE303870C DE303870C DENDAT303870D DE303870DA DE303870C DE 303870 C DE303870 C DE 303870C DE NDAT303870 D DENDAT303870 D DE NDAT303870D DE 303870D A DE303870D A DE 303870DA DE 303870 C DE303870 C DE 303870C
- Authority
- DE
- Germany
- Prior art keywords
- ammonium
- magnesium
- magnesia
- salts
- carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 19
- ZLNQQNXFFQJAID-UHFFFAOYSA-L Magnesium carbonate Chemical class [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 241001264730 Callistemon salignus Species 0.000 claims description 5
- 239000001095 magnesium carbonate Substances 0.000 claims description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N Ammonium carbonate Chemical compound N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000001099 ammonium carbonate Substances 0.000 claims description 3
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 3
- 229940072033 potash Drugs 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- 239000002969 artificial stone Substances 0.000 claims 1
- 235000011160 magnesium carbonates Nutrition 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- 239000011776 magnesium carbonate Substances 0.000 description 7
- 235000014380 magnesium carbonate Nutrition 0.000 description 7
- RAQQJEFTDXAGKW-UHFFFAOYSA-M C([O-])([O-])=O.[Mg+].[NH4+] Chemical compound C([O-])([O-])=O.[Mg+].[NH4+] RAQQJEFTDXAGKW-UHFFFAOYSA-M 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L MgCl2 Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 230000002378 acidificating Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Nachdem das Problem der synthetischen Ammoniakerzeugung· als gelöst betrachtet und Ammoniak leicht in jeder gewünschten Menge beschafft werden kann, ist die technische Voraussetzung gegeben, einer großzügigen Verwertung der als Begleiter der Kalisalze auftretenden Magnesiasalze näherzutreten. Diese Magnesiasalze bilden in der Kaliindustrie, in bedeutender Menge als sogenannte Endlauge, ein sehr lästiges Abfallprodukt. Bei einer Verwertung derselben ist es eine wirtschaftliche Forderung, daß keine neuen Abfallstoffe entstehen, vielmehr Pro-After the problem of synthetic ammonia production · considered solved and Ammonia can easily be procured in any desired amount is technical Given the prerequisite, a generous utilization of the as a companion of the potash salts to approach occurring magnesia salts. These magnesia salts form in the potash industry, in significant quantities as so-called final liquor, a very annoying waste product. When the same is used it is an economic requirement that no new waste materials arise, but rather that
•dukte, welche gegenüber den Ausgangsstoffen nöherwertig sind und welche einen fast unbegrenzt großen Markt besitzen.• products which are of higher value than the raw materials and which are almost unlimited own big market.
Es wurde nun gefunden, daß sich aus diesen Magnesiasalzen ein dichtes Magnesiumoxyd erzeugen läßt,, welches dem gebrannten Magnesit in seinen Eigenschaften sehr nahekommt, in bezug auf Reinheit ihn noch übertrifft und sich für Steinholz und keramische Zwecke eignet. Dies ist überraschend, .weil sich bisher die aus künstlichen Karbonaten erzeugten Oxyde für Steinholz nicht eigneten. Auch die sogenannte Staßfurter Magnesia hat nur in ganz untergeordnetem Maße als Zusatz zu gebranntem Magnesit in der Steinholzindustrie Verwendung gefunden.It has now been found that these magnesia salts form a dense magnesium oxide can be produced, which has the properties of the burnt magnesite comes very close, surpasses it in purity and stonewood and suitable for ceramic purposes. This is surprising, because so far the artificial Carbonates produced oxides that were unsuitable for stone wood. Also the so-called Staßfurter Magnesia has only a very minor additive to calcined Magnesite found use in the stone wood industry.
Gemäß vorliegender Erfindung werden z. B. Endlaug'en der Kaliindustrie mit so viel Ammoniumkarbonat behandelt, daß sich die Magnesia als Ammpniummagnesiumkarbonat abscheidet. Man trennt dieses von der Mutterlauge und erhitzt es. Hierbei verliert es Ammoniumkarbonat, und man erhältein schweres Magnesiumkarbonat. Aus diesem künstlichen Magnesiumkarbonat läßt sich durch geeignetes Glühen, z. B. in einem Drehrohrofen, ein Magnesiumoxyd erzeugen, welches den gebrannten Magnesit zu ersetzen vermag.According to the present invention, for. B. Final leaches of the potash industry with so much Ammonium carbonate treats the magnesia to separate out as ammonium magnesium carbonate. You separate this from the Mother liquor and heat it. In doing so, it loses ammonium carbonate and a heavy magnesium carbonate is obtained. For this artificial magnesium carbonate can be obtained by suitable annealing, e.g. B. in a rotary kiln, generate a magnesium oxide, which is able to replace the burnt magnesite.
Durch die gleichzeitige Gewinnung beständiger Ammonsalze aus der bei der Umsetzung erhaltenen, Ammonsalze enthaltenden Mutter-' laug-e wird das Verfahren zu einem durchaus wirtschaftlichen. ~Through the simultaneous extraction of stable ammonium salts from the during implementation obtained mother liquor containing ammonium salts, the process becomes an entirely economic. ~
Es ist schon bekannt, durch Einwirkung von teilweise karbonisiertem Ammoniak auf eine aus Ablauge hergestellte Magnesiumchloridlösung· ein leichtes basisch kohlen-. saures Magnesium herzustellen. Durch Glühen erhält man aus diesem ein leichtes, lockeres Magnesiumoxyd, welches sich aber für Steinholz und die Erzeugung feuerfester Produkte nicht eignet und als Ersatz für gebrannten Magnesit gar nicht in Frage kommen kann. .It is already known by the action of partially carbonized ammonia a magnesium chloride solution made from waste liquor · a light basic carbon. to produce acidic magnesium. By glowing this one gets a light, loose magnesium oxide, which is suitable for stone wood and the production of fireproof Products are not suitable and cannot be used as a substitute for burnt magnesite can. .
Es ist auch schon vorgeschlagen worden, Ammoniummagnesiumkarbonat dadurch zu zersetzen, daß man das feuchte Produkt im Vakuum bei 60 bis 700 C erhitzte. Man erhält dadurch ein zu lockeres Magnesiumkarbonat, aus dem sich auch ein genügend dichtes Magriesiumoxyd nicht erbrennen läßt. Auch die Zersetzung· des Ammoniummagnesiumkarbonats mit Magnesiumoxyd ist nicht geeignetIt has also been proposed to decompose ammonium magnesium carbonate by heating the moist product at 60 to 70 ° C. in vacuo. The result is a magnesium carbonate that is too loose, from which even a sufficiently dense magnesium oxide cannot be burned off. The decomposition of ammonium magnesium carbonate with magnesium oxide is also unsuitable
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE303870C true DE303870C (en) |
Family
ID=557537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT303870D Active DE303870C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE303870C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969140C (en) * | 1953-12-12 | 1958-05-08 | Wintershall Ag | Artificial stone masses made from magnesia cement |
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0
- DE DENDAT303870D patent/DE303870C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969140C (en) * | 1953-12-12 | 1958-05-08 | Wintershall Ag | Artificial stone masses made from magnesia cement |
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