{"id":1791,"date":"2024-02-16T16:15:39","date_gmt":"2024-02-16T14:15:39","guid":{"rendered":"https:\/\/projektit.gtk.fi\/smarttest\/?page_id=1791"},"modified":"2025-02-06T10:41:24","modified_gmt":"2025-02-06T08:41:24","slug":"wp1","status":"publish","type":"page","link":"https:\/\/projektit.gtk.fi\/smarttest\/wp1\/","title":{"rendered":"Vedenpoistoon perustuvat rikastushiekkojen kuival\u00e4jitystekniikat"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-right-small:30px;--awb-padding-left-small:30px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1664px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one\"><h1 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:38;line-height:1.26;\"><h1>Rikastushiekkojen kuival\u00e4jitystekniikat<\/h1><\/h1><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-right-small:30px;--awb-padding-left-small:30px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1664px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-padding-right:50px;--awb-padding-right-small:0px;--awb-padding-left-small:0px;--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p>Rikastushiekat l\u00e4jitet\u00e4\u00e4n kaivosalueilla rikastushiekka-alueelle perinteisesti lietteen\u00e4 m\u00e4rk\u00e4l\u00e4jityksen\u00e4. Suuren vesim\u00e4\u00e4r\u00e4n hallinta edellytt\u00e4\u00e4 laajoja padottuja rikastushiekka-alueita ja selkeytysaltaita, joihin voi liitty\u00e4 stabiliteettiriskej\u00e4 ja joista voi aiheutua kontaminoituneiden vesien kulkeutumista ymp\u00e4rist\u00f6\u00f6n. Vedest\u00e4 on monilla paikoilla pulaa, jolloin prosessivesi tulisi saada mahdollisimman tarkkaan talteen sen sijaan, ett\u00e4 se johdetaan rikastushiekka-alueelle. N\u00e4iden vuoksi maailmalla on yleistym\u00e4ss\u00e4 rikastushiekan vaihtoehtoiset l\u00e4jitystavat, kuten pasta- ja kuival\u00e4jitys, joissa rikastushiekasta poistetaan vett\u00e4 ennen sen l\u00e4jitt\u00e4mist\u00e4 rikastushiekka-alueelle. Pastal\u00e4jityksen rikastushiekka voidaan edelleen l\u00e4jitt\u00e4\u00e4 pumppaamalla rikastushiekka-alueelle. Kuival\u00e4jitett\u00e4v\u00e4, suodatettu rikastushiekka sen sijaan kuljetetaan ajoneuvoilla tai hihnakuljettimilla rikastushiekka-alueelle, jossa se levitet\u00e4\u00e4n tiiviiksi ja tasaisiksi kerroksiksi.<\/p>\n<p>Suomessa monet kaivokset suunnittelevat t\u00e4ll\u00e4 hetkell\u00e4 rikastushiekan l\u00e4jitt\u00e4miseen kuiva- tai pastal\u00e4jityksen k\u00e4ytt\u00f6\u00f6nottoa, mutta toistaiseksi rikastushiekan pastal\u00e4jityst\u00e4 tehd\u00e4\u00e4n vain Yara Siilinj\u00e4rven kaivoksella. Uusien tekniikoiden k\u00e4ytt\u00f6\u00f6nottoa on hidastanut referenssikohteiden sek\u00e4 tiedon puute tekniikoiden pitk\u00e4aikaistoimivuudesta pohjoismaisissa ilmasto-olosuhteissa.<\/p>\n<\/div><div class=\"fusion-text fusion-text-2\"><p>T\u00e4m\u00e4n vuoksi SMARTTEST-hankkeessa laaditaan rikastushiekan uusista l\u00e4jitystekniikoista tietopaketti, jossa kuvataan m\u00e4rk\u00e4l\u00e4jitykselle vaihtoehtoisia tekniikoita sek\u00e4 niiden soveltuvuutta Suomen ilmasto-olosuhteisiin. Lis\u00e4ksi kehitet\u00e4\u00e4n suodatetun rikastushiekan pitk\u00e4aikaistestaamiseen soveltuva kentt\u00e4testi, jolla testataan kuival\u00e4jityksen toimintaa pohjoismaisissa olosuhteissa.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:10px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:50%;--awb-order-medium:0;--awb-spacing-right-medium:3.84%;--awb-spacing-left-medium:3.84%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-3\"><p>Kentt\u00e4testin aikana kuival\u00e4jitetyn materiaalin geoteknist\u00e4 ja geokemiallista k\u00e4ytt\u00e4ytymist\u00e4 seurataan kentt\u00e4mittauksilla. Lis\u00e4ksi testiss\u00e4 k\u00e4ytett\u00e4v\u00e4n materiaalin geokemialliset, mineralogiset ja geotekniset ominaisuudet tutkitaan laboratoriossa ennen ja j\u00e4lkeen testin. Kentt\u00e4testin ja tietopaketin perusteella vedenpoistoon perustuvan rikastushiekan l\u00e4jityksen testaamisesta laaditaan palvelupaketti palvelun liitt\u00e4miseksi osaksi GTK:n palvelutarjontaa.<\/p>\n<\/div><div class=\"fusion-image-element \" style=\"--awb-margin-top:20px;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-dropshadow imageframe-1 hover-type-none\" style=\"border-radius:4px;-webkit-box-shadow: 4px 4px 8px rgba(53,53,53,0.3);box-shadow: 4px 4px 8px rgba(53,53,53,0.3);\"><img decoding=\"async\" width=\"600\" height=\"450\" title=\"Image (4)\" src=\"https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/Image-4-600x450.jpg\" alt class=\"img-responsive wp-image-2073\" srcset=\"https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/Image-4-200x150.jpg 200w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/Image-4-400x300.jpg 400w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/Image-4-600x450.jpg 600w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/Image-4-800x600.jpg 800w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/Image-4-1200x900.jpg 1200w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><div class=\"fusion-image-element \" style=\"--awb-margin-top:30px;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-dropshadow imageframe-2 hover-type-none\" style=\"border-radius:4px;-webkit-box-shadow: 4px 4px 8px rgba(53,53,53,0.3);box-shadow: 4px 4px 8px rgba(53,53,53,0.3);\"><img decoding=\"async\" width=\"600\" height=\"450\" title=\"shared image (3)\" src=\"https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/shared-image-3-600x450.jpg\" alt class=\"img-responsive wp-image-2078\" srcset=\"https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/shared-image-3-200x150.jpg 200w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/shared-image-3-400x300.jpg 400w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/shared-image-3-600x450.jpg 600w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/shared-image-3-800x600.jpg 800w, https:\/\/projektit.gtk.fi\/smarttest\/wp-content\/uploads\/sites\/31\/2024\/11\/shared-image-3-1200x900.jpg 1200w\" sizes=\"(max-width: 640px) 100vw, 800px\" \/><\/span><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":20,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"footnotes":""},"class_list":["post-1791","page","type-page","status-publish","hentry"],"acf":[],"lang":false,"translations":[],"_links":{"self":[{"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/pages\/1791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/comments?post=1791"}],"version-history":[{"count":29,"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/pages\/1791\/revisions"}],"predecessor-version":[{"id":2310,"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/pages\/1791\/revisions\/2310"}],"wp:attachment":[{"href":"https:\/\/projektit.gtk.fi\/smarttest\/wp-json\/wp\/v2\/media?parent=1791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}