DE533938C - Simultaneous production of phosphorus (or phosphoric acid) and alumina - Google Patents
Simultaneous production of phosphorus (or phosphoric acid) and aluminaInfo
- Publication number
- DE533938C DE533938C DEI39188D DEI0039188D DE533938C DE 533938 C DE533938 C DE 533938C DE I39188 D DEI39188 D DE I39188D DE I0039188 D DEI0039188 D DE I0039188D DE 533938 C DE533938 C DE 533938C
- Authority
- DE
- Germany
- Prior art keywords
- phosphorus
- alumina
- iron
- phosphoric acid
- furnace
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/003—Phosphorus
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/01—Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/20—Preparation from elemental phosphorus or phosphoric anhydride
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/38—Preparation of aluminium oxide by thermal reduction of aluminous minerals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
Gleichzeitige Herstellung von Phosphor (bzw. Phosphorsäure) und Tonerde Es ist bekannt, zwecks Gewinnung von Tonerde tonerdehaltige Rohstoffe, in erster Linie Bauxit, im elektrischen Ofen reduzierend niederzuschmelzen, wobei das Reduktionsmittel so bemessen wird, daß die Verunreinigungen der Rohstoffe an FeO" SiO2, TiOz reduziert und als Eisenlegierungen abgeschieden werden.Simultaneous production of phosphorus (or phosphoric acid) and alumina It is known that raw materials containing alumina are primarily used for the extraction of alumina Line bauxite, to be melted down in an electric furnace in a reducing manner, with the reducing agent is dimensioned in such a way that the contamination of the raw materials in FeO "SiO2, TiOz is reduced and deposited as iron alloys.
Andererseits wurde aber auch bereits vorgeschlagen, ein Gemisch von tonerdereichen Phosphaten und Kalkphosphaten unter Zuschlag anderer tonerdehaltiger Stoffe (Bauxit, Ton u. dgl.) in Anwesenheit von Kohle reduzierend-zu verschmelzen, wobei Phosphor gewonnen wird und gleichzeitig eine Calciumaluminatschlacke entsteht, welch letztere auf Tonerde verarbeitet werden kann. Bei diesem Verfahren muß aber die Tonerde aus der Calciumaluminatschlacke in bekannter Weise auf dem umständlichen nassen Wege gewonnen werden, wobei sich wegen des Silikatgehalts der Schlacke Verluste an Tonerde durch Bildung eines Natrium-Aluminium-Silikats ergeben.On the other hand, a mixture of Alumina-rich phosphates and lime phosphates with the addition of other alumina-containing ones Substances (bauxite, clay, etc.) to be merged in a reducing manner in the presence of coal, where phosphorus is obtained and a calcium aluminate slag is created at the same time, which latter can be processed on clay. With this procedure, however, must the clay from the calcium aluminate slag in a known manner on the cumbersome wet paths can be obtained, with losses due to the silicate content of the slag on alumina by the formation of a sodium aluminum silicate.
Gegenstand vorliegender Erfindung ist ein Verfahren, das es gestattet, aus Tonerdephosphat durch reduzierendes Verschmelzen Tonerde und Phosphor in einem Zuge zu gewinnen, indem von vornherein auf die Entstehung einer Schlacke hingearbeitet wird, die aus technisch reiner Tonerde besteht, indem die Kohlenstoffmenge so bemessen wird, daß sie für die vollständige Reduktion nicht nur des Phosphors,-sondern auch der Gangart ausreichend ist.The present invention is a method that allows from alumina phosphate through reducing fusing alumina and phosphorus in one To gain traction by working towards the creation of a slag from the start which consists of technically pure alumina by measuring the amount of carbon that it is necessary for the complete reduction not only of the phosphorus, but also the gait is sufficient.
In Ausführung des vorliegenden Verfahrens wird bei Beschickung eines für die Phosphorgewinnung geeigneten elektrischen Ofens mit Aluminiumphosphat und Reduktionsmitteln, in erster Linie Koks, in Mengen, die für eine Reduktion des Phosphorpentoxyds und der Gangart ausreichen, die Belastung der Heizzone auf Erzielung einer Temperatur oberhalb des Schmelzpunktes der Tonerde bemessen. Hierbei wird eine geschmolzene Tonerde erhalten, die nach dem Erstarren in jeder Hinsicht den Korundsorten entspricht, die- nach dem üblichen Verfahren aus Bauxit im elektrischen Ofen erschmolzen und für Schleifzwecke sowie für hochfeuerfeste Erzeugnisse verwendet werden. Der Phosphor des Aluminiumphosphats wird durch Reduktion in Freiheit gesetzt und als Dampf mit dem gleichzeitig erzeugten Kohlenoxyd nach einer Verdichtungsanlage abgeführt oder durch Luftzufuhr auf Pentoxyd verbrannt und auf Phosphorsäure verarbeitet. Bei der Verarbeitung von eisenarmen Aluminiumphosphaten wird zweckmäßig hinreichend Eisenoxyd bzw. Eisen zum Schmelzgut zugeschlagen, um die Bildung einer Legierung von Eisen mit den aus der Gangart reduzierten Elementen zu sichern. Dabei kann man durch entsprechende Ausbildung des Ofens auf Abstich- oder auf Blockerzeugung der reinen Tonerde hinarbeiten. Beispiel loo Teile Aluminiumphösphat von ungefähr der Zusammensetzung: 43'/o A1203, 40 % P20s, 9 % FeO", 5 % 5i02, 3 % TiO2 werden mit 22 Teilen Koks gemischt im elektrischen Ofen geschmolzen. Der Phosphor destilliert ab, und als Rückstand wird eine Korundschmelze erhalten, während die Verunreinigungen an Fe2O3, TiO2, SiO2 reduziert und als Eisenlegierung abgeschieden werden, die je nach Zusammensetzung wechseInde, aber, auf den eingebrachten Phosphor bezogen, unbedeutende Mengen Phosphor aufnimmt.In carrying out the present process, when loading a for the production of phosphorus suitable electric furnace with aluminum phosphate and Reducing agents, primarily coke, in quantities sufficient to reduce the phosphorus pentoxide and the gait sufficient to load the heating zone to achieve a temperature measured above the melting point of the clay. This is a melted Obtain alumina, which after solidification corresponds in every respect to the types of corundum, die- melted by the usual process from bauxite in an electric furnace and be used for grinding purposes as well as for highly refractory products. The phosphorus the aluminum phosphate is set free by reduction and with it as steam discharged from the simultaneously generated carbon oxide after a compression plant or Burned on pentoxide by air supply and processed on phosphoric acid. In the Processing of low-iron aluminum phosphates is expediently sufficient iron oxide or iron added to the molten material in order to form an alloy of iron to secure with the elements reduced from the gait. You can use the appropriate Work towards the formation of the furnace for tapping or block production of the pure alumina. example 100 parts of aluminum phosphate of approximately the composition: 43% A1203, 40% P20s, 9% FeO ", 5% 5i02, 3% TiO2 are mixed with 22 parts of coke in the electric Furnace melted. The phosphorus distills off and the residue becomes a corundum melt obtained while the impurities in Fe2O3, TiO2, SiO2 and reduced as iron alloy be deposited, which change depending on the composition, but on the introduced Based on phosphorus, absorbs insignificant amounts of phosphorus.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI39188D DE533938C (en) | 1929-09-01 | 1929-09-01 | Simultaneous production of phosphorus (or phosphoric acid) and alumina |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI39188D DE533938C (en) | 1929-09-01 | 1929-09-01 | Simultaneous production of phosphorus (or phosphoric acid) and alumina |
Publications (1)
Publication Number | Publication Date |
---|---|
DE533938C true DE533938C (en) | 1931-09-21 |
Family
ID=7190001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI39188D Expired DE533938C (en) | 1929-09-01 | 1929-09-01 | Simultaneous production of phosphorus (or phosphoric acid) and alumina |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE533938C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752568C (en) * | 1939-02-13 | 1954-02-01 | Walter Dyckerhoff Dr | Simultaneous production of phosphorus and alumina as well as a raw material for the production of hydraulic binders |
-
1929
- 1929-09-01 DE DEI39188D patent/DE533938C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE752568C (en) * | 1939-02-13 | 1954-02-01 | Walter Dyckerhoff Dr | Simultaneous production of phosphorus and alumina as well as a raw material for the production of hydraulic binders |
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