DE629600C - Verfahren zur gleichzeitigen Gewinnung von Salzen des gwertigen Chroms und von Alkaliphosphaten - Google Patents
Verfahren zur gleichzeitigen Gewinnung von Salzen des gwertigen Chroms und von AlkaliphosphatenInfo
- Publication number
- DE629600C DE629600C DEB158944D DEB0158944D DE629600C DE 629600 C DE629600 C DE 629600C DE B158944 D DEB158944 D DE B158944D DE B0158944 D DEB0158944 D DE B0158944D DE 629600 C DE629600 C DE 629600C
- Authority
- DE
- Germany
- Prior art keywords
- chromium
- substances
- phosphates
- phosphorus
- salts
- 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
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims description 35
- 229910052804 chromium Inorganic materials 0.000 title claims description 25
- 239000011651 chromium Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 19
- 150000003839 salts Chemical class 0.000 title claims description 5
- 229910000318 alkali metal phosphate Inorganic materials 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 19
- 235000021317 phosphate Nutrition 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 19
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 15
- 239000011574 phosphorus Substances 0.000 claims description 15
- 230000029087 digestion Effects 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 5
- 239000000788 chromium alloy Substances 0.000 claims description 5
- 239000003245 coal Substances 0.000 claims description 5
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 150000003018 phosphorus compounds Chemical class 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 25
- 229910052799 carbon Inorganic materials 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 229910000640 Fe alloy Inorganic materials 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 229910000604 Ferrochrome Inorganic materials 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- VQYBJJWZTGPLRX-UHFFFAOYSA-N [P].[Cr].[Fe] Chemical compound [P].[Cr].[Fe] VQYBJJWZTGPLRX-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 238000011946 reduction process Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 229910001096 P alloy Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 2
- 229910000396 dipotassium phosphate Inorganic materials 0.000 description 2
- 235000019797 dipotassium phosphate Nutrition 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002367 phosphate rock Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 2
- 235000019798 tripotassium phosphate Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000000209 wet digestion Methods 0.000 description 2
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 229910001389 inorganic alkali salt Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- UJRBOEBOIXOEQK-UHFFFAOYSA-N oxo(oxochromiooxy)chromium hydrate Chemical compound O.O=[Cr]O[Cr]=O UJRBOEBOIXOEQK-UHFFFAOYSA-N 0.000 description 1
- -1 persalts Chemical class 0.000 description 1
- ZTPQLYJGPLYBPS-UHFFFAOYSA-N phosphanylidynechromium Chemical compound [Cr]#P ZTPQLYJGPLYBPS-UHFFFAOYSA-N 0.000 description 1
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 description 1
- XMXNVYPJWBTAHN-UHFFFAOYSA-N potassium chromate Chemical compound [K+].[K+].[O-][Cr]([O-])(=O)=O XMXNVYPJWBTAHN-UHFFFAOYSA-N 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 208000011117 substance-related disease Diseases 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
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
- C01B25/26—Phosphates
- C01B25/30—Alkali metal phosphates
- C01B25/305—Preparation from phosphorus-containing compounds by alkaline treatment
-
- 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
- C01B25/26—Phosphates
- C01B25/30—Alkali metal phosphates
- C01B25/305—Preparation from phosphorus-containing compounds by alkaline treatment
- C01B25/306—Preparation from phosphorus-containing compounds by alkaline treatment from phosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/14—Chromates; Bichromates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
- C22B34/1213—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by wet processes, e.g. using leaching methods or flotation techniques
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB158944D DE629600C (de) | 1932-12-25 | 1932-12-25 | Verfahren zur gleichzeitigen Gewinnung von Salzen des gwertigen Chroms und von Alkaliphosphaten |
DEB161369D DE630964C (de) | 1932-12-25 | 1933-06-24 | Verfahren zur Herstellung von Salzen des 6-wertigen Chroms |
DEB163250D DE633593C (de) | 1932-12-25 | 1933-11-24 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
DEB163282D DE636588C (de) | 1932-12-25 | 1933-11-25 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
FR768366D FR768366A (fr) | 1932-12-25 | 1933-12-18 | Procédé pour la fabrication simultanée des sels du chrome hexavalent et d'autres composés oxygénés de valeur |
AT140843D AT140843B (de) | 1932-12-25 | 1933-12-20 | Verfahren zur Herstellung von Salzen des 6-wertigen Chroms unter gleichzeitiger Gewinnung von wertvollen Sauerstoffverbindungen. |
NL67894A NL38974C (en:Method) | 1932-12-25 | 1933-12-22 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB158944D DE629600C (de) | 1932-12-25 | 1932-12-25 | Verfahren zur gleichzeitigen Gewinnung von Salzen des gwertigen Chroms und von Alkaliphosphaten |
DEB161369D DE630964C (de) | 1932-12-25 | 1933-06-24 | Verfahren zur Herstellung von Salzen des 6-wertigen Chroms |
DEB163250D DE633593C (de) | 1932-12-25 | 1933-11-24 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
DEB163282D DE636588C (de) | 1932-12-25 | 1933-11-25 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
Publications (1)
Publication Number | Publication Date |
---|---|
DE629600C true DE629600C (de) | 1936-05-09 |
Family
ID=33568670
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB158944D Expired DE629600C (de) | 1932-12-25 | 1932-12-25 | Verfahren zur gleichzeitigen Gewinnung von Salzen des gwertigen Chroms und von Alkaliphosphaten |
DEB161369D Expired DE630964C (de) | 1932-12-25 | 1933-06-24 | Verfahren zur Herstellung von Salzen des 6-wertigen Chroms |
DEB163250D Expired DE633593C (de) | 1932-12-25 | 1933-11-24 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
DEB163282D Expired DE636588C (de) | 1932-12-25 | 1933-11-25 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB161369D Expired DE630964C (de) | 1932-12-25 | 1933-06-24 | Verfahren zur Herstellung von Salzen des 6-wertigen Chroms |
DEB163250D Expired DE633593C (de) | 1932-12-25 | 1933-11-24 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
DEB163282D Expired DE636588C (de) | 1932-12-25 | 1933-11-25 | Verfahren zur Herstellung von Salzen des 6wertigen Chroms |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT140843B (en:Method) |
DE (4) | DE629600C (en:Method) |
FR (1) | FR768366A (en:Method) |
NL (1) | NL38974C (en:Method) |
-
1932
- 1932-12-25 DE DEB158944D patent/DE629600C/de not_active Expired
-
1933
- 1933-06-24 DE DEB161369D patent/DE630964C/de not_active Expired
- 1933-11-24 DE DEB163250D patent/DE633593C/de not_active Expired
- 1933-11-25 DE DEB163282D patent/DE636588C/de not_active Expired
- 1933-12-18 FR FR768366D patent/FR768366A/fr not_active Expired
- 1933-12-20 AT AT140843D patent/AT140843B/de active
- 1933-12-22 NL NL67894A patent/NL38974C/xx active
Also Published As
Publication number | Publication date |
---|---|
AT140843B (de) | 1935-02-25 |
DE630964C (de) | 1936-06-09 |
FR768366A (fr) | 1934-08-04 |
DE633593C (de) | 1936-07-31 |
NL38974C (en:Method) | 1936-09-15 |
DE636588C (de) | 1936-10-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2023024A1 (de) | Verfahren zur Herstellung von Mangandioxyd mit geringem Kaliumgehalt | |
DE547422C (de) | Herstellung von Chromaten und Bichromaten | |
DE629600C (de) | Verfahren zur gleichzeitigen Gewinnung von Salzen des gwertigen Chroms und von Alkaliphosphaten | |
DE660832C (de) | Verfahren zum Herstellen von rostfreiem Eisen | |
DE1052378B (de) | Verfahren zur Herstellung hydrolysierbarer Titansulfatloesungen | |
DE448009C (de) | Verfahren zur Erzeugung einer rostsicheren Schicht auf Eisen und Stahl | |
DE639497C (de) | Verfahren zur Gewinnung von kohlenstoff- und siliziumarmem Vanadin, Chrom und Mangan oder Legierungen dieser Metalle | |
DE401172C (de) | Verfahren zur Herstellung von Eisenchromlegierungen | |
DE526884C (de) | Verfahren zur Veredelung von Thomasschlacken fuer Duengezwecke | |
CH187419A (de) | Verfahren zur Herstellung von Natriumbichromat unter gleichzeitiger Bildung von Natriumphosphat. | |
DE951089C (de) | Exothermisches Gemisch und Verfahren zum Vergueten von Eisen | |
AT89015B (de) | Verfahren zur Herstellung von kohlenstoffarmem Ferrochrom. | |
DE527144C (de) | Verfahren zur Herstellung kohlenstoffarmer Metalle oder Legierungen durch silicothermische Reduktion | |
DE752521C (de) | Verfahren zum Entkohlen von kohlenstoffhaltigem Ferrochrom | |
DE525112C (de) | Herstellung von Chromoxyd | |
DE2141642C3 (de) | HochleistungsschweiBelektrode | |
DE928769C (de) | Verfahren zur Herstellung von kohlenstoffarmem Ferrochrom aus kohlenstoffreichem Ferrochrom | |
AT91171B (de) | Verfahren zur Erzeugung von Schwefeldioxyd aus den Sulfaten der alkalischen Erden. | |
DE854499C (de) | Gewinnung von Salzen der Phosphorsaeure und von Vanadiumverbindungen | |
DE748741C (de) | Verfahren zur Aufbereitung von komplexen, oxydischen Eisenchromerzen auf Chrom | |
DE919287C (de) | Verfahren zur Herstellung von Chromaten | |
DE544520C (de) | Gewinnung von Alkaliphosphaten | |
DE908302C (de) | Verfahren zum Herstellen kohlenstoffarmer Ferrolegierungen und Metalle | |
DE546722C (de) | Verfahren zur Gewinnung von Eisen aus Eisenerzen mittels elementaren Chlors | |
DE898314C (de) | Verfahren zum Herstellen einer eisen- und chromhaltigen Vorlegierung fuer die Erzeugung von Chromstahl oder Eisen |