NO137935B - PROCEDURES FOR THE PREPARATION OF A FREE-STORAGEABLE, ESPECIALLY NON-FREEZING ROAD SALT ON SODIUM CHLORIDE - Google Patents
PROCEDURES FOR THE PREPARATION OF A FREE-STORAGEABLE, ESPECIALLY NON-FREEZING ROAD SALT ON SODIUM CHLORIDE Download PDFInfo
- Publication number
- NO137935B NO137935B NO197772A NO197772A NO137935B NO 137935 B NO137935 B NO 137935B NO 197772 A NO197772 A NO 197772A NO 197772 A NO197772 A NO 197772A NO 137935 B NO137935 B NO 137935B
- Authority
- NO
- Norway
- Prior art keywords
- sodium chloride
- derivatives
- resp
- polyols
- road salt
- Prior art date
Links
- 150000003839 salts Chemical class 0.000 title claims description 34
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims description 33
- 239000011780 sodium chloride Substances 0.000 title claims description 23
- 238000007710 freezing Methods 0.000 title claims description 20
- 238000000034 method Methods 0.000 title claims description 19
- 238000002360 preparation method Methods 0.000 title description 2
- 230000008014 freezing Effects 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000654 additive Substances 0.000 claims description 12
- 229920005862 polyol Polymers 0.000 claims description 12
- 150000003077 polyols Chemical class 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000007859 condensation product Substances 0.000 claims description 7
- 239000003463 adsorbent Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000001692 EU approved anti-caking agent Substances 0.000 claims description 2
- 230000000274 adsorptive effect Effects 0.000 claims description 2
- 150000004679 hydroxides Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000010422 painting Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 239000003513 alkali Substances 0.000 claims 1
- 239000000839 emulsion Substances 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- 239000000725 suspension Substances 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 235000002639 sodium chloride Nutrition 0.000 description 46
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000013078 crystal Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 230000002528 anti-freeze Effects 0.000 description 3
- 239000012047 saturated solution Substances 0.000 description 3
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000005909 Kieselgur Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- 108010053481 Antifreeze Proteins Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 240000004752 Laburnum anagyroides Species 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- -1 alkyl morpholines Chemical class 0.000 description 1
- 239000007798 antifreeze agent Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012633 leachable Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- AWDBHOZBRXWRKS-UHFFFAOYSA-N tetrapotassium;iron(6+);hexacyanide Chemical compound [K+].[K+].[K+].[K+].[Fe+6].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] AWDBHOZBRXWRKS-UHFFFAOYSA-N 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical class [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/26—Preventing the absorption of moisture or caking of the crystals
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Road Paving Structures (AREA)
Description
Oppfinnelsen vedrører en fremgangsmåte til fremstilling av et i det fri lagringsdyktig, spesielt ikke sammenfrysende veisalt på basis av natriumklorid og under medanvendelse av di- resp. polyhydroksyforbinde Iser som tilsetnings - middel såvel som eventuelt andre tilsetningsmidler, resp. antibakningsmidler. Ved fremgangsmåten ifølge oppfinnelsen oppnås at veisalt forblir lagringsdyktig i det fri selv ved vekslende atmosfærisk belastning og spesielt ved temperaturer under frysepunktet; i kombinasjon med i og for seg kjente antibakningsmidler hindres en saminenbakning, resp. sammenfrysing ved vekslende temperaturer og relative luftfuktigheter såvel over som også under frysepunktet. The invention relates to a method for the production of a road salt capable of being stored in the open, especially non-freezing, on the basis of sodium chloride and with the combined use of di- or polyhydroxy compound Iser as an additive as well as possibly other additives, resp. anti-baking agents. With the method according to the invention, it is achieved that road salt remains storable in the open even with changing atmospheric pressure and especially at temperatures below the freezing point; in combination with per se known anti-caking agents, a samine caking is prevented, resp. freezing at alternating temperatures and relative humidities both above and below the freezing point.
Saminenbakning av krystallinske stoffer ei' som kjent Samine baking of crystalline substances is not known
å føre tilbake til dannelsen av en mettet oppløsning på kry-stallenes overflate ved utløsning av en viss del av stoffet i f.eks. fra atmosfæren kondensert fuktighet eller' væte, og senere inndampning av den dannede, mettede oppløsning. Dette forårsaker' dannelse av "krystallbroer" mellom de enkelte kry-staller og endelig deres gjensidige forening til faste agglo-merater . to lead back to the formation of a saturated solution on the surface of the crystals by releasing a certain part of the substance in e.g. from the atmosphere condensed moisture or wet, and later evaporation of the saturated solution formed. This causes the formation of "crystal bridges" between the individual crystals and finally their mutual union into solid agglomerates.
Sammen frysningen av fuktig eller vått stensalt ved temperaturer under frysepunktet, beror som kjent på dannelsen av natriumklorid-dihydrat fra den mettede oppløsning som be-finner seg på krystalloverflaten. Dannelsen av natriumklorid-dihydrat i fuktig stensalt forløper inntil hele den tilstede-værende vannmengde under' ytterligere oppløsning av fast natriumklorid har omsatt seg til natriumklorid-dihydrat. Ved dannelsen av en ny fast fase mellom stensaltkrystallene foregår således en sterk agglomerering av saltkrystallene. Together, the freezing of moist or wet rock salt at temperatures below freezing depends, as is known, on the formation of sodium chloride dihydrate from the saturated solution that is on the crystal surface. The formation of sodium chloride dihydrate in moist rock salt proceeds until the entire amount of water present during further dissolution of solid sodium chloride has been converted to sodium chloride dihydrate. When a new solid phase is formed between the rock salt crystals, a strong agglomeration of the salt crystals thus takes place.
Det faktum at det til grunn for saminenbakning og sammenfrysning av stensalt ligger to fra hverandre helt for-skjellige fysikalske prosesser, som avhenger av de hver gang herskende temperatur- og fuktighetsforhold, ble hittil ikke tatt hensyn til. Derfor skal det også påpekes at det hittil i mange tilfeller ikke tydelig ble skilt mellom midler som hindrer en sammenbakning resp. en sammenfrysning av stensalt. The fact that the basis for samine baking and freezing of rock salt are two completely different physical processes, which depend on the prevailing temperature and humidity conditions, was not taken into account until now. Therefore, it should also be pointed out that until now in many cases no clear distinction was made between means that prevent a combination or a freezing of rock salt.
I enkelte tilfeller kunne det bare for snevert begrensede områder av fuktighetsinnholdet i stensalt, fastslås såvel en hindring av sammenbakning som også av sammenfrysning, som f.eks. ved anvendelse av kalsiumklorid, magnesiumklorid, aluminiumklorid, sinkklorid, maganklorid eller sluttlut fra kaliindustrien. In some cases, it was only possible for narrowly limited areas of the moisture content in rock salt to determine both an obstacle to caking as well as to freezing, such as e.g. by using calcium chloride, magnesium chloride, aluminum chloride, zinc chloride, magnesium chloride or final liquor from the potash industry.
En annen veg består i å hydrofobere saltkrystallene med stoffer, for således å hindre inntrengning av fuktighet og sammenvekst av krystallene . Denne fremgangsmåte fører bare ved små fuktighetsbelastninger til en hindring av sammenbakning og sammenfrysning, som f.eks. ved bruk av stearater, alkylmorfo-liner, fettsyre-urinstoffpreparater osv. Another way is to hydrophobicize the salt crystals with substances, in order to prevent the penetration of moisture and the growth of the crystals together. This method only leads to low moisture loads preventing caking and freezing, such as e.g. when using stearates, alkyl morpholines, fatty acid-urea preparations, etc.
For å beskytte veisalt både mot sammenbakning og sammenfrysning, kan man ikke ganske enkelt kombinere et vil-kårlig antibakningsmiddel med et antifrysemiddel, da det har vist seg at det ofte opptrer en nedsettelse av virkningen eller sogar et virkningstap hos disse tilsetningsmidler i kombinasjon. Således er det eksempelvis kjent at kaliumheksacyano-ferrat-(II) i nærvær av oppløselige kalsium- og magnesium-salter taper sine fremragende egenskaper som antibakningsmiddel . In order to protect road salt both against caking and freezing, one cannot simply combine any anti-caking agent with an anti-freeze agent, as it has been shown that there is often a reduction in the effect or even a loss of effect with these additives in combination. Thus, for example, it is known that potassium hexacyanoferrate-(II) in the presence of soluble calcium and magnesium salts loses its outstanding properties as an anti-caking agent.
De stoffer som hittil er blitt anvendt som tilset-ning i veisalt på stensaltbasis for å hindre sammenbakning resp. sammenfrysning, har ulemper derved at de bare er virk-somme ved små fuktighetsmengder og bare har antibaknings-eller bare antifrysevirkning resp. ved sterkere fuktighetsbe-lastning, som f.eks. regn og snefall, vaskes ut og dermed blir uvirksomme. The substances that have so far been used as additives in rock salt-based road salt to prevent caking or freezing, have disadvantages in that they are only effective with small amounts of moisture and only have an anti-baking or only anti-freeze effect resp. in the event of a stronger moisture load, such as e.g. rain and snowfall, are washed out and thus become inactive.
Foreliggende oppfinnelses formål og oppgave var derfor å finne en fremgangsmåte til fremstilling av et i det fri lagringsdyktig, spesielt ikke sammenfrysende veisalt resp. et etter denne fremgangsmåte fremstillet veisalt, som ikke har de ovenfor nevnte ulemper og hvor spesielt tilsetningsmidlet for hindring av frysning av veisaltet ikke, resp. knapt, kan utvaskes ved ubeskyttet lagring i det fri. Et ytterligere formål mer<1> oppfinnelsen er å fremstille et veisalt resp. en fremgangsmåte til fremstilling av et veisalt, i hvilket virkningen av det anvendte tilsetningsmiddel ikke forringes selv i kombinasjon. Endelig skulle det frembringes et veisalt som selv ved sterke temperatur- og fuktighetssvingninger, fryse-temperaturer og lignende ikke fryser sammen resp. ikke sammen-bakes ved lagring i det fri. Opptiningshastigheten for is og sne skulle økes ved dette veisalt . The purpose and task of the present invention was therefore to find a method for the production of a road salt that can be stored in the open, in particular not congealing, resp. a road salt produced according to this method, which does not have the above-mentioned disadvantages and where, in particular, the additive for preventing freezing of the road salt does not, resp. barely, can be washed out by unprotected storage in the open. A further object of the invention is to produce a road salt resp. a method for producing a road salt, in which the effect of the additive used is not impaired even in combination. Finally, a road salt was to be produced which, even with strong temperature and humidity fluctuations, freezing temperatures and the like, does not freeze together or not baked together when stored in the open. The thawing rate for ice and snow was to be increased with this road salt.
Oppfinnelsen vedrører altså en fremgangsmåte til fremstilling av i det fri lagringsdyktig, spesielt ikke sammenfrysende veisalt på basis av natriumklorid og under medanvendelse av 0,05 - 5 vekt?, fortrinnsvis 0,1 - 0,6 vekt? organiske, hygroskopiske di- og/eller polyhydroksyforbindelser resp. deres derivater som tilsetningsmiddel samt eventuelt et antibakningsmiddel, idet fremgangsmåten er karakterisert' ved at det til natriumkloridet settes hygroskopiske kondensasjonsprodukter av polyoler eller deres derivater og 0,1 - 10 vekt?, fortrinnsvis 0,5 - 1 vekt? av et fast vannuoppløselig adsorpsjonsmiddel, alene eller i blanding under anvendelse av i og for seg kjente blandingsmåter innbefattende pådysing eller maling og lignende. The invention thus relates to a method for the production of storable in the open, especially non-freezing road salt based on sodium chloride and with the co-use of 0.05 - 5 wt?, preferably 0.1 - 0.6 wt? organic, hygroscopic di- and/or polyhydroxy compounds resp. their derivatives as an additive and possibly an anti-caking agent, the method being characterized in that hygroscopic condensation products of polyols or their derivatives are added to the sodium chloride and 0.1 - 10 wt?, preferably 0.5 - 1 wt? of a solid water-insoluble adsorptive agent, alone or in a mixture using per se known mixing methods including spraying or painting and the like.
I motsetning til de hittil kjente antifrysemidler påvirker ikke tilsetningen av de organiske, hygroskopiske di-og/eller polyhydroksyforbindelser og/eller kondensasjonsprodukter av polyoler resp. deres derivater i kombinasjon med 0,1 - 10 vekt?, fortrinnsvis 0,5 - 1 vekt? av et adsorbsjons-middel, virkningen av antibakningsmidlet i veisaltet på negativ måte. Som polyhydroksyforbindelse kan det også anvendes glycerol. In contrast to the hitherto known antifreezes, the addition of the organic, hygroscopic di- and/or polyhydroxy compounds and/or condensation products of polyols resp. their derivatives in combination with 0.1 - 10 wt?, preferably 0.5 - 1 wt? of an adsorbent, the effect of the anti-caking agent in the road salt in a negative way. Glycerol can also be used as a polyhydroxy compound.
Det ble videre funnet at virkningen av tilsetningsmidlet kan forbedres, når man til veisaltet eller antibakningsmidlet setter 0,05 - 3 vekt?, referert til natriumkloridet, fortrinnsvis 0,1 - 0,5 vekt?, alkalisk virkende, oppløselige hydroksyder resp. oksyder og/eller alkalisk virkende oppløse-lige salter. Når man ved siden av å hindre frysing vil oppnå antibakevirkningen av saltet også under kraftige belastninger under den frie lagring ved vekslende klimainnvirkning, uten enhver tildekning, egner seg her spesielt en kombinasjon med ikke utvaskbare antibakingsmidler, som f.eks. kalium-sink-heksacyanof errat-('II) . I denne kombinasjon lar det seg fremstille et veisalt, som ved ubeskyttet lagring i det fri stadig forblir strøbart ved'temperaturer såvel over som under frysepunktet . It was further found that the effect of the additive can be improved, when adding 0.05 - 3 weight?, referred to the sodium chloride, preferably 0.1 - 0.5 weight?, alkaline-acting, soluble hydroxides or oxides and/or alkaline acting soluble salts. When, in addition to preventing freezing, you want to achieve the anti-baking effect of the salt also under heavy loads during free storage due to changing climatic influences, without any cover, a combination with non-washable anti-baking agents, such as e.g. potassium-zinc-hexacyanoof errate-('II) . In this combination it is possible to produce a road salt which, when stored in the open air, remains spreadable at temperatures both above and below the freezing point.
En ytterligere fordel ved anvendelse av det ved fremgangsmåten ifølge oppfinnelsen fremstilte veisalt består i at opptiningshastigheten av is og sne er tydelig øket sammenlignet med ubehandlet veisalt. A further advantage when using the road salt produced by the method according to the invention is that the thawing rate of ice and snow is clearly increased compared to untreated road salt.
I forhold til hittil kjente veisalt kan veisaltet fremstilt ifølge oppfinnelsen uten spesiell beskyttelse mot været (lagerhaller, presenningdekke) lagres i det fri i umiddelbar nærhet av det aktuelle anvendelsessted, som f.eks. broer, underganger, skogsveier. Risleevnen er tilfredsstil-lende såvel for håndstrøing som for maskinell strøing såvel som for mekaniske transportapparater. Fordelene ved fremgangsmåten ifølge oppfinnelsen skal forklares ved hjelp av følgende eksempel. In relation to previously known road salt, the road salt produced according to the invention can be stored in the open without special protection against the weather (storage halls, tarpaulin cover) in the immediate vicinity of the relevant place of use, such as e.g. bridges, underpasses, forest roads. The rippling ability is satisfactory both for hand spreading and for mechanical spreading as well as for mechanical transport devices. The advantages of the method according to the invention shall be explained by means of the following example.
Et stensalt (Sichter 0) som var behandlet med ikke utvaskbart antibakningsrniddel på basis av kuliumsink-heksa-cyanoferrat-(II), ble blandet med 0,5? av de i følgende tabell nevnte polyoler, 0,25? natriumhydroksyd og 0,5? kiselgur. En del av det preparerte stensalt ble bla.ndet med "5? vann, referert til salt, fylt i sylindriske former (indre diameter 6 cm, høyde 6 cm) og presset fast med 10 kp/om . Disse pressede saltprøvelegeiner ble uttørket ved 50°C. Etter tørk-ning ble brudd fastheten for press legemene bestemt, og sammenlignet med en bare med 3? vann behandlet og likeledes ved 50°C tørket stensaltblindprøve. A rock salt (Sichter 0) which had been treated with a non-leachable anti-caking agent based on calcium zinc hexacyanoferrate-(II) was mixed with 0.5? of the polyols mentioned in the following table, 0.25? sodium hydroxide and 0.5? diatomaceous earth. A part of the prepared rock salt was mixed with 5% water, referred to salt, filled in cylindrical molds (inner diameter 6 cm, height 6 cm) and pressed firmly at 10 kp/om. These pressed salt test bodies were dried at 50 ° C. After drying, the breaking strength for the pressure bodies was determined, and compared with a rock salt blank sample treated only with 3% water and likewise dried at 50 ° C.
Den andre del av det preparerte stensalt ble til-blandet 5? vann, referert til salt og fylt i koniske former The second part of the prepared rock salt was mixed with 5? water, referred to salt and filled in conical forms
(øvre diameter 5,5 cm, nedre 6,5 cm, høyde 6 cm). Disse salt-prøver ble innfrosset ved -l8°C. Etter innfrysning ble brudd-fastheten av saltprøvene ved -l8°C bestemt og sammenlignet med en bare med 5? vann behandlet og likeledes ved -l8°C innfrosset stensalt-blindprøve. (upper diameter 5.5 cm, lower 6.5 cm, height 6 cm). These salt samples were frozen at -18°C. After freezing, the breaking strength of the salt samples at -18°C was determined and compared to one only with 5? water treated and likewise at -l8°C frozen rock salt blank sample.
Resultatene er oppstillet i den følgende tabell. Tabell. The results are listed in the following table. Table.
Stensalt (Sichter 0) tilsatt 250 ppm kalium-sink-heksa-cyanoferrat-(II) som antibakningsrniddel og 0,5? polyol, 0,25? natriumhydroksyd og 0,5? kiselgur. Rock salt (Sichter 0) with 250 ppm of potassium-zinc-hexa-cyanoferrate-(II) added as an anti-caking agent and 0.5? polyol, 0.25? sodium hydroxide and 0.5? diatomaceous earth.
Anvendelsen av natriumhydroksyd forbedrer anti-frysevirkningen av polyolen. Natriumhydroksydet kan imidlertid også erstattes med andre alkalier og alkalisk reagerende salter. The use of sodium hydroxide improves the antifreeze effect of the polyol. However, the sodium hydroxide can also be replaced with other alkalis and alkaline-reacting salts.
Eksemplet viser at egenskapene av antibakningsmidlet kalium-sink-heksacyanoferrat-(II) ikke påvirkes nevne-verdig ved nærvær av polyoler. Polyolene har alene en bare meget måtelig antibakningsmiddelegenskap. The example shows that the properties of the anti-caking agent potassium-zinc-hexacyanoferrate-(II) are not significantly affected by the presence of polyols. The polyols alone have only a very moderate anti-caking agent property.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712127680 DE2127680C3 (en) | 1971-06-04 | 1971-06-04 | Process for the production of a road salt which can be stored in the open, in particular does not freeze together, based on sodium chloride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO137935B true NO137935B (en) | 1978-02-13 |
| NO137935C NO137935C (en) | 1978-05-24 |
Family
ID=5809770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO197772A NO137935C (en) | 1971-06-04 | 1972-06-02 | PROCEDURE FOR THE PREPARATION OF AN INSTRUMENTABLE, ESPECIALLY NON-FREEZING ROAD SALT BASE OF SODIUM CHLORIDE |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE784257A (en) |
| DE (1) | DE2127680C3 (en) |
| NO (1) | NO137935C (en) |
| SE (1) | SE374087B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO176812C (en) * | 1989-10-13 | 1995-05-31 | Mannesmann Ag | Process for the preparation of a fine grain composition showing hydrophobic properties |
| AU4308601A (en) * | 1999-11-30 | 2001-06-18 | 21St Century Medicine, Inc. | Prevention of ice nucleation by polyglycerol |
| CA2988744C (en) | 2017-02-16 | 2018-08-14 | 9533109 Canada Inc. | Ice melting composition and process for producing thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3310494A (en) * | 1964-04-16 | 1967-03-21 | Wyandotte Chemicals Corp | Ice melting composition and method |
-
1971
- 1971-06-04 DE DE19712127680 patent/DE2127680C3/en not_active Expired
-
1972
- 1972-06-01 BE BE784257A patent/BE784257A/en unknown
- 1972-06-02 SE SE730072A patent/SE374087B/xx unknown
- 1972-06-02 NO NO197772A patent/NO137935C/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE784257A (en) | 1972-10-02 |
| DE2127680C3 (en) | 1981-05-07 |
| DE2127680B2 (en) | 1980-06-26 |
| SE374087B (en) | 1975-02-24 |
| NO137935C (en) | 1978-05-24 |
| DE2127680A1 (en) | 1972-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2436146A (en) | Composition of matter | |
| US6468442B2 (en) | De-icing composition and method | |
| EP0077767B1 (en) | Antifreeze and thawing agent, process for deicing frozen surfaces like streets, roads or the like or for preventing icing | |
| US2399987A (en) | Free-flowing ammonium nitrate composition | |
| RU2751714C2 (en) | Fireproof product, method for manufacturing such product and fire extinguishing device containing such product | |
| EP0710621B1 (en) | Carbon dioxide gas generating compositions | |
| NO140831B (en) | BITUMINOEST, ESPECIALLY ASPHALT MIXED MATERIAL FOR MANUFACTURE OF ICE INHIBITANT AND SNOW-THIN COATS FOR ROADS AND STREETS | |
| NO127892B (en) | ||
| US9682889B2 (en) | Temperature-sensitive antifreezing material for asphalt pavement and method for preparing same | |
| US5853610A (en) | Antifreeze and de-icing agent, especially for the de-icing of surfaces | |
| US9096787B2 (en) | Corrosion inhibiting, freezing point lowering compositions | |
| US5376293A (en) | Deicer | |
| CN106867464A (en) | A kind of CNT composite aquogel based phase-change material and its preparation method and application | |
| KR20180042785A (en) | Eco-friendly pre-wetted salt deicer and manufacturing method thereof | |
| KR20180121148A (en) | Eco-friendly pre-wetted salt deicer and manufacturing method thereof | |
| NO137935B (en) | PROCEDURES FOR THE PREPARATION OF A FREE-STORAGEABLE, ESPECIALLY NON-FREEZING ROAD SALT ON SODIUM CHLORIDE | |
| US3240558A (en) | Non-caking particulated salt composition and process for producing same | |
| US3036884A (en) | Treatment of bulk salt | |
| US5219483A (en) | Method to increase the rate of ice melting by cma deicing chemicals with potassium acetate | |
| US20070295932A1 (en) | Di-icing composition and method | |
| US3130163A (en) | Refrigeration method | |
| KR102683892B1 (en) | Pavement anti-freezing composition comprising phase change material micro-capsule and manufacturing method thereof | |
| US1824588A (en) | Dust layer having improved hygroscopic properties | |
| USRE17566E (en) | Pbocess fob allaying dust in fuels | |
| JP2000233923A (en) | Method for preventing solidification of salt |