P\u0113c vair\u0101k nek\u0101 divdesmit gadu ilgas sl\u012bp\u0113\u0161anas materi\u0101lu specifik\u0101cijas keramikas r\u016bpn\u012bc\u0101m, miner\u0101lu p\u0101rstr\u0101des uz\u0146\u0113mumiem un speci\u0101l\u0101m \u0137\u012bmijas ra\u017eotn\u0113m esmu sapratis, ka l\u0113t\u0101kais materi\u0101ls reti kad ir visekonomisk\u0101kais. Alum\u012bnija smalcin\u0101\u0161anas lod\u012btes atrodas taj\u0101 lietder\u012bgaj\u0101 viduspunkt\u0101, kur veiktsp\u0113ja, pies\u0101r\u0146ojuma kontrole un kop\u0113j\u0101s \u012bpa\u0161umties\u012bbu izmaksas faktiski sakr\u012bt. T\u0101s nav ne vissmag\u0101kais, ne viegl\u0101kais variants tirg\u016b, bet liel\u0101kaj\u0101 da\u013c\u0101 mitro un sauso mal\u0161anas darbu, kuros esmu piedal\u012bjies, t\u0101s sniedz visprognoz\u0113jam\u0101kos rezult\u0101tus ilgsto\u0161\u0101s kampa\u0146\u0101s.<\/p>\n
\u0160\u012bs lod\u012btes ir izgatavotas no alum\u012bnija oks\u012bda, parasti no 92 % l\u012bdz 99 % Al\u2082O\u2083. Jo liel\u0101ks alum\u012bnija oks\u012bda saturs, jo liel\u0101ka nodilumiztur\u012bba un maz\u0101ks piemais\u012bjumu iek\u013c\u016b\u0161anas risks. Ra\u017eo\u0161ana s\u0101kas ar r\u016bp\u012bgi samaltu alum\u012bnija oks\u012bda pulveri, kas tiek sajaukts ar nelielu daudzumu sa\u0137epin\u0101\u0161anas pal\u012bgvielu. P\u0113c tam pulveri velm\u0113jot vai izostatiski pres\u0113jot veido lod\u0113s, \u017e\u0101v\u0113 un apdedzina temperat\u016br\u0101, kas iev\u0113rojami p\u0101rsniedz 1500 \u00b0C. Sintrin\u0101\u0161anas laik\u0101 da\u013ci\u0146as savienojas bl\u012bv\u0101, s\u012bkgraudain\u0101 strukt\u016br\u0101 ar \u013coti mazu porain\u012bbu. Gatavo lod\u012b\u0161u izm\u0113ri ir no aptuveni 3 mm l\u012bdz 80 mm vai liel\u0101ki atkar\u012bb\u0101 no dzirnavu diametra un m\u0113r\u0137a da\u013ci\u0146u izm\u0113ra.<\/p>\n
R\u016bpn\u012bc\u0101 vissvar\u012bg\u0101kais ir tas, k\u0101 \u0161\u012bs \u012bpa\u0161\u012bbas izpau\u017eas ikdienas darb\u0101. Alum\u012bnija lod\u012b\u0161u ciet\u012bba ir aptuveni 9, kas ir pietiekami augsta, lai efekt\u012bvi sasmalcin\u0101tu kvarcu, lauk\u0161patu, cirkonu un daudzas r\u016bdas. To bl\u012bvums ir no 3,6 l\u012bdz 3,9 g\/cm\u00b3, t\u0101p\u0113c katra bumbi\u0146a nes labu trieciena ener\u0123iju, bet nav p\u0101r\u0101k smaga. Nodilumiztur\u012bbas l\u012bmenis mitr\u0101 mal\u0161an\u0101 parasti ir \u013coti zems - norm\u0101los apst\u0101k\u013cos bie\u017ei vien maz\u0101ks par 0,02 % stund\u0101 -, kas noz\u012bm\u0113, ka barotnes l\u0101di\u0146\u0161 kalpo ilg\u0101k un dzirnavu oder\u0113jums ir maz\u0101k pak\u013cauts agres\u012bvai abr\u0101zijai. T\u0101 k\u0101 materi\u0101ls ir \u0137\u012bmiski inerts, tas nerea\u0123\u0113 ar vairumu sk\u0101bju, s\u0101rmu vai organisko savienojumu, un tas praktiski nerada dzelzs vai citu met\u0101lu pies\u0101r\u0146ojumu. P\u0113d\u0113jais punkts ir \u013coti svar\u012bgs, ja sl\u012bp\u0113jat keramikas korpusus vai glaz\u016bras, kur pat neliels daudzums dzelzs var main\u012bt kr\u0101su vai rad\u012bt defektus apdedzin\u0101taj\u0101 izstr\u0101d\u0101jum\u0101.<\/p>\n
Esmu daudzk\u0101rt redz\u0113jis praktisko at\u0161\u0137ir\u012bbu. Vien\u0101 glaz\u016bras r\u016bpn\u012bc\u0101, p\u0101rejot no krama o\u013ciem uz 95 % alum\u012bnija oks\u012bda lod\u012bt\u0113m, sl\u012bp\u0113\u0161anas laiks samazin\u0101j\u0101s par aptuveni 25 %, vienlaikus uzlabojot partijas konsekvenci. Akmenti\u0146i nolietojas nevienm\u0113r\u012bgi un reiz\u0113m \u0161\u0137\u0113l\u0101s, atst\u0101jot rupjas da\u013ci\u0146as, kas bija j\u0101izsij\u0101. Alum\u012bnija lod\u012btes ilg\u0101k saglab\u0101j\u0101s apa\u013cas un rad\u012bja prec\u012bz\u0101ku da\u013ci\u0146u izm\u0113ru sadal\u012bjumu. Miner\u0101lu mal\u0161anas \u0137\u0113d\u0113, kur\u0101 apstr\u0101d\u0101 kvarca smiltis, t\u0101s pa\u0161as barotnes samazin\u0101ja dzelzs sav\u0101k\u0161anu zem nosak\u0101m\u0101s robe\u017eas, t\u0101d\u0113j\u0101di nov\u0113r\u0161ot papildu magn\u0113tisk\u0101s atdal\u012b\u0161anas posmu p\u0113c k\u0101rtas. \u0160\u0101da veida ieguvumi \u0101tri summ\u0113jas, ja visu diennakti darbojas vair\u0101kas dzirnavas.<\/p>\n
Protams, alum\u012bnija oks\u012bda lod\u012btes nav pareiz\u0101 atbilde katram pielietojumam. T\u0101s maks\u0101 d\u0101rg\u0101k par kilogramu nek\u0101 t\u0113rauda lod\u012btes vai keramikas pamatnes, t\u0101p\u0113c to attaisnojums parasti ir maz\u0101ks pies\u0101r\u0146ojums, ilg\u0101ks nes\u0113ja kalpo\u0161anas laiks vai maz\u0101ks ener\u0123ijas pat\u0113ri\u0146\u0161 uz vienu tonnu produkta. \u012apa\u0161i cietu r\u016bdu sausai smagajai mal\u0161anai ar \u013coti lielu triecienu cirkonija vai t\u0113rauda barotnes joproj\u0101m var b\u016bt v\u0113lam\u0101kas liel\u0101ka bl\u012bvuma un stingr\u012bbas d\u0113\u013c. Alum\u012bnija lod\u012btes var ar\u012b \u0161\u0137elties vai saplais\u0101t, ja dzirnavas ilgsto\u0161i darbojas tuk\u0161as vai ja uzpild\u0113 non\u0101k sve\u0161\u0137erme\u0146i, t\u0101p\u0113c ir svar\u012bgi labi uztur\u0113t k\u0101rt\u012bb\u0101 un veikt pareizas dzirnavu iekrau\u0161anas proced\u016bras.<\/p>\n
Izv\u0113le un darb\u012bbas deta\u013cas iev\u0113rojami at\u0161\u0137iras. Bie\u017ei sastopama k\u013c\u016bda ir viena izm\u0113ra lod\u012b\u0161u izmanto\u0161ana visam l\u0101di\u0146am. Visefekt\u012bv\u0101kaj\u0101s iek\u0101rt\u0101s tiek izmantota diferenc\u0113ta l\u0101di\u0146a - liel\u0101kas lod\u012btes s\u0101kotn\u0113jai smalcin\u0101\u0161anai un pak\u0101peniski maz\u0101kas smalk\u0101kai mal\u0161anai. J\u0101seko ar\u012b l\u012bdzi lod\u012b\u0161u un materi\u0101la attiec\u012bbai un suspensijas viskozit\u0101tei mitr\u0101s dzirnav\u0101s; p\u0101r\u0101k viskozas slaidas var amortiz\u0113t lod\u012btes un samazin\u0101t mal\u0161anas efektivit\u0101ti. Regul\u0101ras lod\u012b\u0161u nodiluma p\u0101rbaudes un neregul\u0101ra papildin\u0101\u0161ana nodro\u0161ina, ka l\u0101di\u0146\u0161 darbojas p\u0113c iesp\u0113jas lab\u0101k. Es parasti iesaku uz vietas tur\u0113t nelielu visbie\u017e\u0101k izmantoto izm\u0113ru kr\u0101jumu, lai dzirnav\u0101m neb\u016btu j\u0101str\u0101d\u0101 ar izsmeltu vai slikti \u0161\u0137irotu l\u0101di\u0146u, gaidot pieg\u0101di.<\/p>\n
Apstr\u0101de ir vienk\u0101r\u0161a, ta\u010du to ir v\u0113rts veikt uzman\u012bgi. Jaunas bumbi\u0146as pirms iekrau\u0161anas j\u0101p\u0101rbauda, vai taj\u0101s nav plaisu vai \u0161\u0137embu. Uzpildot dzirnavas, vislab\u0101k t\u0101s pievienot pak\u0101peniski, dzirnav\u0101m l\u0113ni rot\u0113jot, nevis izliet visu l\u0101di\u0146u uzreiz. P\u0113c kampa\u0146as nolietot\u0101s lod\u012btes bie\u017ei vien var izsij\u0101t un atk\u0101rtoti izmantot cit\u0101 dzirnav\u0101s, kas pie\u013cauj nedaudz maz\u0101ku mediju.<\/p>\n
No pla\u0161\u0101kas perspekt\u012bvas raugoties, alum\u012bnija oks\u012bda mal\u0161anas lod\u012btes labi atbilst pa\u0161reiz\u0113jam spiedienam samazin\u0101t ener\u0123ijas pat\u0113ri\u0146u un atkritumu daudzumu. T\u0101 k\u0101 t\u0101s nodilst l\u0113ni, izlietot\u0101 materi\u0101la apjoms, kas j\u0101izn\u012bcina vai j\u0101p\u0101rstr\u0101d\u0101, ir maz\u0101ks nek\u0101 daudzu alternat\u012bvu gad\u012bjum\u0101. To nemain\u012bg\u0101 veiktsp\u0113ja ar\u012b pal\u012bdz r\u016bpn\u012bc\u0101m uztur\u0113t stabilu caurlaides sp\u0113ju, kas netie\u0161i samazina ener\u0123ijas zudumus palai\u0161anas un aptur\u0113\u0161anas ciklu laik\u0101.<\/p>\n
Galu gal\u0101 alum\u012bnija oks\u012bda sl\u012bp\u0113\u0161anas lod\u012btes joproj\u0101m ir popul\u0101ras, jo t\u0101s atrisina probl\u0113mas, kas ir patie\u0161\u0101m svar\u012bgas darbojo\u0161\u0101s iek\u0101rt\u0101s: zems pies\u0101r\u0146ojums, paredzams nodilums un pie\u0146emamas kop\u0113j\u0101s izmaksas vis\u0101 uzpildes ekspluat\u0101cijas laik\u0101. T\u0101s neaizst\u0101s visus citus nes\u0113ju veidus, bet, ja j\u016bsu proces\u0101 t\u012br\u012bba un konsekvence ir tikpat svar\u012bga k\u0101 neapstr\u0101d\u0101ts mal\u0161anas \u0101trums, t\u0101s joproj\u0101m ir viena no praktisk\u0101kaj\u0101m pieejamaj\u0101m izv\u0113l\u0113m. Ja nov\u0113rt\u0113jat jaun\u0101s vai eso\u0161\u0101s dzirnav\u0101s izmantojamos nes\u0113jus, pareizi izstr\u0101d\u0101ta izm\u0113\u0123in\u0101juma darb\u012bba ar faktisko izejmateri\u0101lu joproj\u0101m ir lab\u0101kais veids, k\u0101 apstiprin\u0101t ekonomiskos r\u0101d\u012bt\u0101jus konkr\u0113tajiem apst\u0101k\u013ciem.<\/p>","protected":false},"excerpt":{"rendered":"
After more than twenty years specifying grinding media for ceramics plants, mineral processors, and specialty chemical operations, I\u2019ve learned that […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","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":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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-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-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-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-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-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-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-432","post","type-post","status-publish","format-standard","hentry","category-alumina-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts\/432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/comments?post=432"}],"version-history":[{"count":1,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts\/432\/revisions"}],"predecessor-version":[{"id":433,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/posts\/432\/revisions\/433"}],"wp:attachment":[{"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/media?parent=432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/categories?post=432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminaceramics.net\/lv\/wp-json\/wp\/v2\/tags?post=432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}