{"id":2055,"date":"2023-07-07T14:54:45","date_gmt":"2023-07-07T12:54:45","guid":{"rendered":"https:\/\/uus.osaservice.ee\/?page_id=2055"},"modified":"2023-08-23T08:20:10","modified_gmt":"2023-08-23T06:20:10","slug":"tooted","status":"publish","type":"page","link":"https:\/\/osaservice.ee\/et\/tooted\/","title":{"rendered":"Tooted"},"content":{"rendered":"\n
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J\u00e4\u00e4tmetest v\u00e4\u00e4rtuslike toodeteni<\/h1><\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n
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\u00dclipuhas kaltsiumkarbonaat<\/h2><\/div>

Tuhkadest toodetavatest materjalidest on k\u00f5ige suurem r\u00f5hk \u00fclipuhtal kaltsiumkarbonaadil, mille parimad kasutusn\u00e4ited on toidu- ja farmaatsiasektoris. Kuna meie poolt v\u00e4\u00e4rindatav materjal p\u00e4rineb t\u00f6\u00f6tlevast t\u00f6\u00f6stusest, siis k\u00f5ige t\u00f5en\u00e4olisemalt saavad Ida-Virumaa p\u00f5levkivituhast toodetud kaltsiumkarbonaati hakata kasutama v\u00e4rvi-, plasti- ja paberit\u00f6\u00f6stused.

Unikaalne tehnoloogia v\u00f5imaldab meil kohandada kaltsiumkarbonaadi molekulide suurust ja kuju, et vastata erinevate kasutusalade k\u00f5rgetele n\u00f5uetele. T\u00e4helepanuv\u00e4\u00e4rne on ka see, et meie toode toodetakse kliimaneutraalselt, mis saavutatakse l\u00e4bi emissioonidevaba tootmise ning t\u00e4iendava CO2 sidumise tootesse. Tavap\u00e4raselt toodetakse kaltsiumkarbonaati kaevandades ja p\u00f5letusprotsessi kasutades, mis p\u00e4\u00e4dib toote suure keskkonnajalaj\u00e4ljega.<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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\"\"<\/figure><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n
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\"\"<\/div>

Lubiv\u00e4etis p\u00f5llumajandustootjatele<\/h2><\/div>

Lubi on tootmise k\u00f5rvalaine, mis v\u00f5imaldab mulla elukeskkonna kasvutingimusi rikastada, lisades sinna taimede kasvuks olulisi mikroelemente. Kuna p\u00f5levkivituhkadest saadud lubja puhul kasutatakse teisast materjali ning ei toodeta t\u00e4iesti uuest toormest, on tegu taaskord keskkonnas\u00f5bralikuma tootega kui selle alternatiivid.<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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T\u00e4iteained tootvale t\u00f6\u00f6stusele<\/h2><\/div>

P\u00f5levkivituha v\u00e4\u00e4rindamise teiseks k\u00f5rvalaineks on materjal, mille koostis on silikaatiderikas ning mida saab kasutada n\u00e4iteks tagasit\u00e4itematerjalina ehitussektoris. Sellele materjalile t\u00f6\u00f6tatakse Ragn-Sells Grupi poolt v\u00e4lja omadustele vastavat ja sobivaimat kasutamisfunktsiooni ning suunatakse uuesti ringlusesse.<\/p><\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Tulevikutooted<\/h2><\/div>

P\u00f5levkivituhad on m\u00e4rkimisv\u00e4\u00e4rselt kasulikud ka paljude teiste kriitiliste elementide allikana. Selliste elementide maailmavarud v\u00e4henevad pidevalt, seega on nende eraldamine p\u00f5levkivituhast mitte ainult keskkonnas\u00f5bralik alternatiiv, vaid ka praktiline strateegia uute maardlate otsimisel. OSA projekti raames uurime v\u00f5imalusi eraldada p\u00f5levkivituhast allolevaid elemente.<\/p><\/div><\/div>\n<\/div><\/div>\n\n\n\n

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Mg<\/h1><\/div>

Magneesium<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Al<\/h1><\/div>

Alumiinium<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Fe<\/h1><\/div>

Raud<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Zn<\/h1><\/div>

Tsink<\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Si<\/h1><\/div>

R\u00e4ni<\/p><\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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\"\"<\/figure><\/div>\n<\/div>\n\n\n\n
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Mis on kaltsiumkarbonaat?<\/h2><\/div>

Taltech inseneriteaduskonna materjali- ja keskkonnatehnoloogia instituudi professor Andres Trikkel:<\/strong> 
Kaltsiumkarbonaat (CaCO3<\/sub>) on loodusliku lubjakivi p\u00f5hikomponent. Mineraalina tuntakse seda kaltsiidi nime all, kuid l\u00e4htuvalt kristallstruktuuri erinevustest ka aragoniidina v\u00f5i vateriidina. Viimased on aga v\u00e4helevinud. Lubjakivis on kaltsiumkarbonaadi sisaldus v\u00e4hemalt 50%. Lisaks sisaldab lubjakivi ka magneesiumkarbonaati ning lisandeid. Suurema magneesiumisisaldusega karbonaatset kivimit tuntakse dolokivi (mineraalina dolomiit) nime all. Dolomiidi p\u00f5hikomponent on kaksik\u00fchend CaCO3<\/sub>\u00d7MgCO3<\/sub>. Pehme ja poorne lubjakivi vorm on kriit, lubjakivist v\u00f5i dolomiidist on tekkinud ka dekoratiivmaterjal marmor. Eesti dolomiiti on sageli kasutatud viimistlusmaterjalina (fassaadi- ja dekoratiivplaadid, aknalauad, k\u00f6\u00f6gitasapinnad), lubjakivist ehitisi (vanalinna hooned, kalmed, m\u00fc\u00fcrid, kirikud, m\u00f5isad) v\u00f5ib Eestis kohata igal sammul. J\u00e4rsud paekivikaldad p\u00f5hjarannikul on moodustunud peamiselt lubjakivist.<\/p><\/div><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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S\u00fcnteetiline vs orgaaniline kaltsiumkarbonaat? <\/h2><\/div>

Andres Trikkel<\/strong>: Loodusliku ja s\u00fcnteetilise kaltsiumkarbonaadi erinevus peitub lisandite sisalduses. Looduslikus lubjakivis v\u00f5ib esineda kuni 25% lisandeid, mis m\u00f5jutavad selle materjali v\u00e4rvust, tugevust ja muid omadusi. Vastavalt nendele omadustele eristatakse ehituslubjakivi ja tehnoloogilist lubjakivi. Esimene l\u00e4heb ehituskiviks ja killustikuks, teisest toodetakse tsementi ja lupja. Puhast lubjakivi leidub harva. Puhtaim lubjakivi on TT\u00dc laboris nn Vasalemma “marmor” (95,6-97,4% CaCO3<\/sub>, 0,84-1,46% MgCO3<\/sub>, muude lisandite sisaldust iseloomustav soolhappes lahustumatu j\u00e4\u00e4k 0,45-0,76%). K\u00f5rge puhtusega lubjakivi peaks sisaldama \u00fcle 97% CaCO3<\/sub>. <\/p><\/div><\/div>\n<\/div>\n\n\n\n

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Miks ja kus kaltsiumkarbonaati kasutatakse? <\/h2><\/div>

Andres Trikkel<\/strong>: S\u00fcnteetliises kaltsiumkarbonaadis on lisanditesisaldus piiratud ja viidud miinimumini. S\u00f5ltuvalt kasutusest (paberi, v\u00e4rvide, plastide, toiduainete ning ravimite t\u00f6\u00f6stus, kus lubjakivi on t\u00e4iteaineks, aga ka tsemendi, klaasi ja keraamiliste materjalide t\u00f6\u00f6stus) vajatakse kindlate omadustega kaltsiumkarbonaati. Piiratud on lisandite, raua, magneesiumi, v\u00e4\u00e4vli jt. \u00fchendite sisaldus ning vastavalt kasutusele on seatud piirid ka selle materjali osakeste suurusele v\u00f5i v\u00e4rvusele. See saavutatakse vastavate keemilis-tehnoloogiliste meetoditega. Eestis pakub erinevaid lubjakivitooteid Nordkalk AS Rakke lubjatehas. <\/p><\/div><\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"enabled","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-2055","page","type-page","status-publish","hentry"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Rainer Pesti","author_link":"https:\/\/osaservice.ee\/et\/author\/rainer\/"},"uagb_comment_info":0,"uagb_excerpt":null,"_links":{"self":[{"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/pages\/2055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/comments?post=2055"}],"version-history":[{"count":13,"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/pages\/2055\/revisions"}],"predecessor-version":[{"id":2460,"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/pages\/2055\/revisions\/2460"}],"wp:attachment":[{"href":"https:\/\/osaservice.ee\/et\/wp-json\/wp\/v2\/media?parent=2055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}