DE156087C - - Google Patents
Info
- Publication number
- DE156087C DE156087C DENDAT156087D DE156087DA DE156087C DE 156087 C DE156087 C DE 156087C DE NDAT156087 D DENDAT156087 D DE NDAT156087D DE 156087D A DE156087D A DE 156087DA DE 156087 C DE156087 C DE 156087C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- pyrite
- ferrophosphorus
- silica
- reducing agent
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000015450 Tilia cordata Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical group [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052683 pyrite Inorganic materials 0.000 claims description 4
- 239000011028 pyrite Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000003638 reducing agent Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H Tricalcium phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 2
- 239000001506 calcium phosphate Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229910000389 calcium phosphate Inorganic materials 0.000 claims 1
- 235000011010 calcium phosphates Nutrition 0.000 claims 1
- 239000003245 coal Substances 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 235000021317 phosphate Nutrition 0.000 claims 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims 1
- 239000011541 reaction mixture Substances 0.000 claims 1
- 239000011575 calcium Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910000460 iron oxide Inorganic materials 0.000 description 2
- 231100000614 Poison Toxicity 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N Silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910000150 monocalcium phosphate Inorganic materials 0.000 description 1
- 235000019691 monocalcium phosphate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
AisERLiCHESAisERLiCHES
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
KLASSE Λ2ή. "■£> CLASS Λ2ή. "■ £>
■ GUSTAVE GIN in PARIS.■ GUSTAVE GIN in PARIS.
Die vorliegende Erfindung betrifft die Darstellung von Ferrophosphor aus Kalkphosphat im geschlossenen elektrischen Ofen durch Einwirkung eines Reduktionsmittels (Kohlenstoff) und Eisen unter Zusatz von Kieselsäure zwecks Verschlackung des Calcium-· ■·.■■'oxyds. Bis auf den heutigen Tag benutzte man als Reduktionsmittel Kohlenstoff, den man gemäß vorliegender Erfindung durch ίο Pyrit ersetzt, wodurch gleichzeitig ein Teil des Eisens eingeführt wird.The present invention relates to the preparation of ferrophosphorus from lime phosphate in a closed electric furnace through the action of a reducing agent (carbon) and iron with the addition of silicic acid for the purpose of slagging the calcium · ■ ·. ■■ 'oxyds. Used to this day carbon as the reducing agent, which is carried out according to the present invention ίο replaced pyrite, thereby making a part at the same time of iron is introduced.
■ Der Prozeß verläuft gemäß folgenden Gleichungen:'■ The process proceeds according to the following equations: '
+ 12 Si O2 + 5FeS2 + ii Fe — r? : 8PFe2+ 12 Si O3Ca+ ίο SO2 + 12 Si O 2 + 5FeS 2 + ii Fe - r ? : 8PFe 2 + 12 Si O 3 Ca + ίο SO 2
'oder'or
5 P20sCas +is Si O2+ loFe S2 + 5 Fe2 O3 = IO PFe2 + 15 Si O3 Ca + 20 SO2. 5 P 2 0 s Ca s + is Si O 2 + loFe S 2 + 5 Fe 2 O 3 = IO PFe 2 + 15 Si O 3 Ca + 20 SO 2 .
'■''■' Die Reaktionen vollziehen sich bei einer '■''■' The reactions take place in one
Ί Temperatur, die ein wenig über dem Schmelzpunkte des Eisens liegt. Die günstigste Stromdichte entspricht einem Energieverbrauch von 50 bis 60 Watt pro qcm Querschnitt der beweglichen Elektrode. Die Spannung schwankt zwischen 25 und 30 Volt pro Flammenbogen, deren mehrere in einem Schmelztiegel vereinigt werden können. Ί Temperature a little higher than the melting point of iron. The most favorable current density corresponds to an energy consumption of 50 to 60 watts per square centimeter of cross-section of the movable electrode. The voltage fluctuates between 25 and 30 volts per flame arc, several of which can be combined in one crucible.
' Selbstverständlich vollziehen sich diese Reaktionen noch' leichter und mit noch geringerem Verbrauch an Verschlackungsmitteln, wenn man Bi- oder Monocalciumphosphat verwendet.'Of course, these reactions take place even more' more easily and with even less consumption of slagging agents, when using bi- or monocalcium phosphate.
Es kann nun vorkommen, daß sich zufolge der Unreinigkeit der Materialien Nebenreaktionen bilden und hierbei eine geringe Menge Phosphor frei wird. . Es ist daher rätlich, in einem geschlossenen, mit einer Niederschlagkammer kommunizierenden Ofen zu arbeiten, um die Giftwirkung der Phosphordämpfe, welche sich der umgebenden Atmo- > Sphäre mitteilen würden, zu vermeiden.It can now happen that side reactions occur as a result of the impurity of the materials and a small amount of phosphorus is released. . It is therefore advisable in a closed oven communicating with a precipitation chamber work to reduce the poisonous effect of the phosphorus vapors, which the surrounding atmosphere > Sphere would communicate to avoid.
In den Verbindungskanal streut man Eisendrehspäne ein, die mit dem gelegentlich verdampfenden Phosphor eine \^erbindung eingehen. Das Verfahren wird durch folgendes Beispiel erläutert:In the connecting channel one sprinkles iron turnings with the occasionally evaporating Phosphorus form a bond. The procedure is through the following Example explained:
Um ι t Ferrophosphor von 21 Prozent Phosphorgehalt zu erhalten, bringt man folgende Rohstoffmengen (unter Berücksichtigung der Unreinigkeiten) in den Ofen ein, und zwar bei Benutzung von metallischem Eisen ungefähr:To ι t ferrophosphorus of 21 percent To maintain phosphorus content, bring the following amounts of raw materials (taking into account the impurities) into the furnace, when using metallic Iron approximately:
1100 kg Kalkphosphat, 630 kg Kieselsäure, 525 kg Pyrit, 510 kg metallisches Eisen; bei Benutzung von Eisenoxyd:1100 kg lime phosphate, 630 kg silica, 525 kg pyrite, 510 kg metallic iron; at Use of iron oxide:
1100 kg Kalkphosphat, 630 kg Kieselsäure, 840 kg Pyrit, 630 kg Eisenoxyd.1100 kg lime phosphate, 630 kg silica, 840 kg pyrite, 630 kg iron oxide.
6060
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE156087C true DE156087C (en) |
Family
ID=422504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT156087D Active DE156087C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE156087C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5721294A (en) * | 1993-01-21 | 1998-02-24 | Akzo Nobel Nv | Air-drying aqueous polymer dispersions |
-
0
- DE DENDAT156087D patent/DE156087C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5721294A (en) * | 1993-01-21 | 1998-02-24 | Akzo Nobel Nv | Air-drying aqueous polymer dispersions |
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