CS214306B1 - Anti-caking agent for surface treatment of granulated fertilizers - Google Patents
Anti-caking agent for surface treatment of granulated fertilizers Download PDFInfo
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- CS214306B1 CS214306B1 CS735480A CS735480A CS214306B1 CS 214306 B1 CS214306 B1 CS 214306B1 CS 735480 A CS735480 A CS 735480A CS 735480 A CS735480 A CS 735480A CS 214306 B1 CS214306 B1 CS 214306B1
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Abstract
Povrchová úprava granulovaných priemyselných hnojiv za použitia zmesi bitumenóznvch látok v minerálnom oleji, ktoré sú modifikované přidáním 0,1-20 % hm. nízkomolekulárnych pólyolefinov, polyesterov alebo polyalkoholov. Přítomné polyméry vylepšujú protispekavú účinnost, zlepšujú přilnavost ku granuliam a vylepšujú tokové vlastnosti hnojivá, co má vel'ký význam pri návaznom použití hnojiv, kde tieto vlastnosti okrem obsahu živin a ich formy sú rozhodujúce.Surface treatment of granular industrial fertilizers using a mixture of bituminous substances in mineral oil, which are modified by adding 0.1-20 wt. % low molecular weight polyolefins, polyesters or polyalcohols. The polymers present improve the anti-caking effect, improve adhesion to granules and improve the flow properties of the fertilizer, which is of great importance in the subsequent use of fertilizers, where these properties, in addition to the content of nutrients and their form, are decisive.
Description
Vynález sa týká protispekavého prostrledku pre povrchová úpravu granulovaných priemyslových hnojív.The invention relates to an anti-caking agent for the surface treatment of granular industrial fertilizers.
Sú známe prostriedky pre povrchová úpravu priemvselných hnojív ako roztokov bitumenóznych látok v minerálnom oleji, ktorých riešenie je uplatněná v patente DL 101 657. Patenty SU 600 127, US 3 477 842 a DT 2 018 623 riešia nespekavost priemyselných hnojív za použitia hydrofóbnych a separačných mateiálov alebo ich kombinácii. Vyšší protispakavý účinok za súčasného zníženia obsahu oleja a bitumenóznych látok sa dosiahne použitím úpravy priemyselných hnojív protispekavým prostriedkom podl'a vynálezu, podstatou ktorého je, že 5-40 % hm. bitumenóznych látek v minerálnom oleji obsahuje 0,1-20 % polymérnych látok s molekulovou hmotnostou 5-20.000, pričom polymérna látka je nízkomolekulárny polyetylém s molekulovou hmotnostou 5-10.000, homopolymérna disperzia polyvinylacetátu s veťkostou častíc 50-400 nm a parciálně hydrolyzovaný polyvinylalkohol s obsahom 3-20 % acetátových skupin. Podstata navrhovaného riešenia je protispekavý prostriedok na základe 5-40 % bitumenóznych látok v minerálnom oleji, ktorý obsahuje 0,1-20 % hm. polymérnych látok s molekulovou hmotnostou 5.000-20.000 ako polymérne látky sa može použit nízkomolekulárny polyetylén, homopolymérna disperzia polyvinylacetátu a parciálně hydrolyzovaný polyvinylalkohol.There are known compositions for surface treatment of industrial fertilizers as solutions of bituminous substances in mineral oil, the solution of which is applied in patent DL 101 657. Patents SU 600 127, US 3 477 842 and DT 2 018 623 solve the non-caking of industrial fertilizers using hydrophobic and separation materials or a combination thereof. A higher anti-caking effect while reducing the oil and bitumen content is achieved by using the treatment of industrial fertilizers with an anti-caking agent according to the invention, which is based on 5-40 wt. The bituminous substances in the mineral oil contain 0.1-20% of polymeric substances having a molecular weight of 5-20.000, the polymeric substance being a low molecular weight polyethylene of 5-10.000 molecular weight, a homopolymer dispersion of polyvinyl acetate with a particle size of 50-400 nm and a partially hydrolysed polyvinyl alcohol containing 3-20% acetate groups. The essence of the proposed solution is an anti-caking agent based on 5-40% bituminous substances in mineral oil, which contains 0.1-20% by weight. Low molecular weight polyethylene, homopolymer dispersion of polyvinyl acetate and partially hydrolyzed polyvinyl alcohol can be used as polymeric substances.
Pridávanie polymérnych látok do bitumenóznych roztokov zvyšuje sa protispekavá účinnost o 20 % oproti obdobným roztokom bituménu. Zvyšuje sa přilnavost na povrch granúl, zlepšujú sa uhly zosypu o 5-10 % pri zachovaní výborných tokových vlastností. Stabilizuje sa viskozitná charakteristika hydrofóbno separačných zmesi. Možnost využitia sa předpokládá pri nespekavej povrchovéj úpravě močoviny kombinovaných hnojív a liadkov.The addition of polymeric substances to bitumen solutions increases the anti-caking performance by 20% over similar bitumen solutions. Adhesion to the surface of the granules is increased, the pouring angles are improved by 5-10% while maintaining excellent flow properties. The viscosity characteristic of the hydrophobic separation mixtures is stabilized. Possibility of use is assumed for non-caking surface treatment of urea of combined fertilizers and blades.
Příklad prevedenia:Example:
1. Prdd hnojivá na dopravnom páse, presype alebo v špeciálnom zariadení bubnového alebo šnekového typu sa postrekuje protispekavým prostriedkom o zložení - 20 % hm. bitumenóznych látok, 5 % hm. nízkomolekulárneho polyetylénu s molekulovou hmotnostou 5-10.000 a 75 % hm. minerálneho hnojivá. Zmes sa dávkuje v množstve 0,3 % hm. na hmotu hnojivá. Striekanie sa robí pri teplote 70 °C. Upravené hnojivo je bezprašné a nespekavé po dobu 6-18 mesiacov, podiva sposobu skladovania a klimatických podmienok.1. Fertilizer fertilizer on conveyor belt, transfer or in a special drum or worm-type device is sprayed with an anti-caking agent of composition - 20% by weight. bitumenous substances, 5 wt. low molecular weight polyethylene having a molecular weight of 5-10,000 and 75 wt. mineral fertilizer. The mixture is dosed in an amount of 0.3% by weight. fertilizer. Spraying is carried out at 70 ° C. The treated fertilizer is dust-free and non-sintering for 6-18 months, odd storage conditions and climatic conditions.
2. Hnojivo poďla příkladu 1 sa postrkuje 40 %-ným roztokom bitumenóznych látok v minerálnom oleji, ktorý je modifikovaný 2 % homopolymérnej dlsperzie PVAC za přítomnosti 0,05 % hm.: emulgátora. Separačná zmes sa dávkuje v množstve 0,3 % hm. hnojivá pri teplote 80 °C.2. The fertilizer of Example 1 is sprayed with a 40% solution of bituminous substances in mineral oil which is modified with 2% homopolymeric PVAC dispersion in the presence of 0.05% by weight of emulsifier. The separation mixture is dosed in an amount of 0.3% by weight. fertilizers at 80 ° C.
3. Hnojivo podťa příkladu 1 sa postrekuje zmesou o zložení - 20 % bitumenóznych látok, 5 % práškového parciálně hydrolyzovaného polyvinylalkoholu s obsahom 3-20 % acetátových skupin a 75 % minerálneho oleja. Zmes sa aplikuje v množstve 0,3 % hm. na hnojivo pri teplote 80 °C.3. The fertilizer of Example 1 is sprayed with a mixture of 20% bitumen, 5% partially hydrolyzed polyvinyl alcohol powder containing 3-20% acetate groups and 75% mineral oil. The mixture is applied in an amount of 0.3% by weight. to fertilizer at 80 ° C.
Změna tokových vlastností hnojivá bola sledovaná výtokovým Fordovým kelímkom s vyměnitelnou tryskou.The change in the flow properties of the fertilizer was monitored by a Ford crucible with a replaceable nozzle.
214 306214 306
Fordov Relímok s otvorom /mm/Ford Relief with hole / mm /
Navl'havost hnojivá robená v klimatizačněj skrini pri 25 °C a 100 % relativnej vlhkosti vzduchu za 6 hodin.Humidity of fertilizer made in an air conditioner at 25 ° C and 100% relative humidity in 6 hours.
Vzorka % navlhaniaMoisture% sample
Upravené hnojivo s nemodifikovaným asfaltovým roztokom 100Prepared fertilizer with unmodified asphalt solution
Hnojivo upravené podl'a pr. 1 95Fertilizer treated according to pr. 1 95
Hnojivo upravené podl'a pr. 2 90Fertilizer treated according to pr. 2 90
Hnojivo upravené podl’a pri 3 85Fertilizer treated according to 3 85
Spekavost stanovená penetrometricky a tabletovou metodou:Sintering determined by penetrometric and tablet method:
Penetrometricky Tabl. metodouPenetrometricky Tabl. by
Neupravené hnojivoUntreated fertilizer
Hnojivo upravené s nemodifikovaným bitumenóznym roztokom Hnojivo upravené podl'a pr. 1 Hnojivo upravené podl'a pr. 2 Hnojivo upravené podiva pr. 3Fertilizer treated with unmodified bitumen solution Fertilizer treated according to pr. 1 Fertilizer treated according to pr. 2 Fertilizer treated strands pr. 3
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS735480A CS214306B1 (en) | 1980-11-03 | 1980-11-03 | Anti-caking agent for surface treatment of granulated fertilizers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS735480A CS214306B1 (en) | 1980-11-03 | 1980-11-03 | Anti-caking agent for surface treatment of granulated fertilizers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS214306B1 true CS214306B1 (en) | 1982-04-09 |
Family
ID=5422532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS735480A CS214306B1 (en) | 1980-11-03 | 1980-11-03 | Anti-caking agent for surface treatment of granulated fertilizers |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS214306B1 (en) |
-
1980
- 1980-11-03 CS CS735480A patent/CS214306B1/en unknown
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