NO117538B - - Google Patents
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- Publication number
- NO117538B NO117538B NO164422A NO16442266A NO117538B NO 117538 B NO117538 B NO 117538B NO 164422 A NO164422 A NO 164422A NO 16442266 A NO16442266 A NO 16442266A NO 117538 B NO117538 B NO 117538B
- Authority
- NO
- Norway
- Prior art keywords
- clinker
- color
- white
- per cent
- sulfuric acid
- Prior art date
Links
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002994 raw material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006103 coloring component Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/11—Batch distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
Fremgangsmåte for fremstilling av hvit Portlandsementklinker. Process for the manufacture of white Portland cement clinker.
For fremstilling av hvit Portland-se-mentklinker er det nødvendig å velge slike råmaterialer som er mest mulig fattige på farvegivende bestanddeler, særlig på farvegivende jern- eller manganoksyder. Råmaterialer som er frie for slike forbindelser forekommer imidlertid aldri i en tilstrek-kelig mengde i naturen til at man kunne basere fabrikasjonen av sement på dem. Man må derfor bestandig regne med at man får slike råmaterialer som inneholder større eller mindre mengder av forurensninger bestående av farvegivende bestanddeler. Klinker som blir brent av disse ma-terialer, er ikke rent hvit, men har gul-aktige, grønlige eller brunlige misfarvinger. For the production of white Portland cement clinker, it is necessary to select such raw materials as are as poor as possible in coloring components, in particular in coloring iron or manganese oxides. Raw materials that are free of such compounds, however, never occur in nature in a sufficient quantity to be able to base the manufacture of cement on them. One must therefore always expect that such raw materials are obtained that contain larger or smaller amounts of contaminants consisting of color-giving components. Clinker that is fired from these materials is not pure white, but has yellowish, greenish or brownish discolourations.
For å unngå slike misfarvinger av den To avoid such discolouration of it
hvite klinker er det blitt foreslått flere fremgangsmåter. Særlig er det blitt an-befalt å bråkjøle den varme klinker ved å dyppe den i vann eller ved påhelling av vann. white tiles, several methods have been proposed. In particular, it has been recommended to quench the hot clinker by dipping it in water or by pouring water on it.
Formålet for oppfinnelsen er en fremgangsmåte, hvorved klinker ikke bråkjøles med rent vann, men man anvender for dette formål fortynnete oppløsninger av visse kjemiske reagenser. Herved kommer slike kjemiske forbindelser i betraktning, som overfører de farvegivende oksyder eller andre forbindelser i klinkeren til far-veløse forbindelser, eller til forbindelser hvis farve er komplementær til den i klinkeren ellers herskende grunnfarve. Opp-finnelsens effekt skriver seg bl. a. fra den høye reaksjonsevne av det varme klinker-materiale. På grunn av den porøse struktur av klinkeren oppdager man den ved de The purpose of the invention is a method whereby clinker is not quenched with pure water, but dilute solutions of certain chemical reagents are used for this purpose. Hereby, such chemical compounds are taken into account, which transfer the coloring oxides or other compounds in the clinker to colorless compounds, or to compounds whose color is complementary to the base color otherwise prevailing in the clinker. The effect of the invention can be seen, among other things, in a. from the high reactivity of the hot clinker material. Due to the porous structure of the clinker, it can be detected by the
kjemiske reaksjoner fremkalte «hvithets- chemical reactions produced "whiteness-
effekt» ikke bare på overflaten av klinker-stykket. Det er blitt fastslått en dybde-virkning på inntil 2 cm. effect" not only on the surface of the clinker piece. A depth effect of up to 2 cm has been determined.
Ifølge oppfinnelsen blir klinkeren etter å ha kommet ut fra brennesonen bråkjøle ved å dyppes i eller fuktes med vandige oppløsninger eller suspensjoner, som inneholder halogenvannstoffsyrer, svovelsyre, svovelsyrling og/eiler undersvovelsyre, og/ eller deres alkali- eller Jordalkalisalter, som omdanner de farvegivende oksyder eller andre metallsalter i klinkeren til hvit eller en til den i klinkeren herskende farves komplementærfarve. Typen og mengden av de anvendte oppløsninger retter seg herved etter de forskjellige forurensninger i råmaterialet og den ønskete virkning. For å fjerne farven fra klinkeren for oppnåelse av en god hvithetseffekt, er det hensikts-messig å anvende oppløsninger eller suspensjoner med en konsentrasjon av fra 0,1 til 5 pst., særlig av 1 pst. Som allerede nevnt, er det mulig å variere de anvend-bare konsentrasjoner innenfor vide grenser. According to the invention, after emerging from the firing zone, the clinker is quenched by being dipped in or moistened with aqueous solutions or suspensions, which contain hydrohalic acids, sulfuric acid, sulfuric acid and/or hyposulphuric acid, and/or their alkali or alkaline earth salts, which convert the coloring oxides or other metal salts in the clinker to white or a complementary color to the prevailing color in the clinker. The type and quantity of the solutions used are based on the various contaminants in the raw material and the desired effect. In order to remove the color from the clinker to achieve a good whiteness effect, it is appropriate to use solutions or suspensions with a concentration of from 0.1 to 5 per cent, especially of 1 per cent. As already mentioned, it is possible to vary the applicable concentrations within wide limits.
Ved siden av den farvefjernende effekt kan det også skje en viss forandring i kvaliteten av klinkeren. Således er det f. eks. mulig å oppnå gunstig påvirkning på klinkerens avbindingstid, herdeevne og på dens tilbøyelighet til å svelle eller svinne. In addition to the color-removing effect, there may also be a certain change in the quality of the clinker. Thus, it is e.g. possible to achieve a favorable influence on the clinker's setting time, hardening ability and on its tendency to swell or shrink.
På den br åk j ølte klinker er det ennå etter tørkingen rester av kjemiske forbindelser fra bråkjølingsbadet, hva der er av mindre betydning for kvaliteten av klinkeren. Disse kan eventuelt bli fjernet ved å spyle klinkeren med rent vann før tørking. On the quenched clinker, after drying, there are still residues of chemical compounds from the quenching bath, which are of minor importance for the quality of the clinker. These can possibly be removed by rinsing the clinker with clean water before drying.
Klinkeren blir etter den beskrevne be-handling tørket og malt på vanlig måte. After the described treatment, the clinker is dried and painted in the usual way.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US482685A US3367846A (en) | 1965-08-26 | 1965-08-26 | Utilization of recovered steam heat for heating the distillation zone |
Publications (1)
Publication Number | Publication Date |
---|---|
NO117538B true NO117538B (en) | 1969-08-25 |
Family
ID=23917022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO164422A NO117538B (en) | 1965-08-26 | 1966-08-25 |
Country Status (11)
Country | Link |
---|---|
US (1) | US3367846A (en) |
AT (1) | AT272303B (en) |
CH (1) | CH486400A (en) |
DE (1) | DE1593652A1 (en) |
DK (1) | DK117136B (en) |
ES (1) | ES330435A1 (en) |
FI (1) | FI46732C (en) |
GB (1) | GB1149169A (en) |
IL (1) | IL26347A (en) |
NL (1) | NL6611788A (en) |
NO (1) | NO117538B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4041091A (en) * | 1976-02-19 | 1977-08-09 | Uop Inc. | Fractionation of aromatic streams |
US4555311A (en) * | 1983-11-18 | 1985-11-26 | Uop Inc. | Integrated fractionation in the recovery of alkylaromatic hydrocarbons |
US7249469B2 (en) * | 2004-11-18 | 2007-07-31 | Exxonmobil Chemical Patents Inc. | Method for separating a multicomponent stream |
CN110981835A (en) * | 2019-12-16 | 2020-04-10 | 江苏怡达化学股份有限公司 | Methanol recovery method in propylene oxide production |
CN115430166B (en) * | 2022-09-09 | 2024-06-21 | 天津大学 | Process system and method for steam driven heat pump auxiliary bulkhead tower |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE22379E (en) * | 1943-09-28 | Recovery of pure aromatics | ||
US1874387A (en) * | 1922-11-13 | 1932-08-30 | Semet Solvay Co | Apparatus for the separation of liquids having different boiling points |
US1882568A (en) * | 1928-06-18 | 1932-10-11 | E B Badger & Sons Company | Method of distilling |
US2406695A (en) * | 1941-04-25 | 1946-08-27 | Union Oil Co | Separation of hydrocarbons by distillation |
US2325379A (en) * | 1942-05-26 | 1943-07-27 | Shell Dev | Distillation process |
FR912978A (en) * | 1944-03-29 | 1946-08-26 | Woodall Duckham 1920 Ltd | Distillation |
US2577701A (en) * | 1946-05-20 | 1951-12-04 | Shell Dev | Fractionation process |
USRE26423E (en) * | 1964-06-23 | 1968-07-16 | Apparatus and method of fractionation op ethyl benzene | |
US3254024A (en) * | 1965-03-03 | 1966-05-31 | Halcon International Inc | Process for separating c8-aromatic hydrocarbons by series column distillation |
-
1965
- 1965-08-26 US US482685A patent/US3367846A/en not_active Expired - Lifetime
-
1966
- 1966-08-16 GB GB36518/66A patent/GB1149169A/en not_active Expired
- 1966-08-16 IL IL26347A patent/IL26347A/en unknown
- 1966-08-19 AT AT793266A patent/AT272303B/en active
- 1966-08-19 DE DE19661593652 patent/DE1593652A1/en active Pending
- 1966-08-20 ES ES0330435A patent/ES330435A1/en not_active Expired
- 1966-08-22 NL NL6611788A patent/NL6611788A/xx unknown
- 1966-08-25 NO NO164422A patent/NO117538B/no unknown
- 1966-08-25 DK DK433966AD patent/DK117136B/en unknown
- 1966-08-25 CH CH1230666A patent/CH486400A/en not_active IP Right Cessation
- 1966-08-25 FI FI662226A patent/FI46732C/en active
Also Published As
Publication number | Publication date |
---|---|
CH486400A (en) | 1970-02-28 |
FI46732B (en) | 1973-02-28 |
AT272303B (en) | 1969-07-10 |
DK117136B (en) | 1970-03-23 |
FI46732C (en) | 1973-06-11 |
ES330435A1 (en) | 1967-06-16 |
NL6611788A (en) | 1967-02-27 |
GB1149169A (en) | 1969-04-16 |
IL26347A (en) | 1970-05-21 |
US3367846A (en) | 1968-02-06 |
DE1593652A1 (en) | 1972-04-20 |
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