{"id":130462,"date":"2023-12-25T10:20:55","date_gmt":"2023-12-25T02:20:55","guid":{"rendered":"https:\/\/www.alpapowder.com\/130462\/"},"modified":"2023-12-25T10:20:56","modified_gmt":"2023-12-25T02:20:56","slug":"ultra-ince-tozun-temel-teknik-sorunlari-dispersiyon-ve-aglomerasyon","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/tr\/130462\/","title":{"rendered":"Ultra ince tozun temel teknik sorunlar\u0131 – dispersiyon ve aglomerasyon"},"content":{"rendered":"

\"\"<\/p>\n

Ultra ince tozun topakla\u015fmas\u0131, orijinal toz par\u00e7ac\u0131klar\u0131n\u0131n haz\u0131rlama, ay\u0131rma, i\u015fleme ve depolama i\u015flemleri s\u0131ras\u0131nda birbirine ba\u011flanmas\u0131 ve birden fazla par\u00e7ac\u0131\u011f\u0131n daha b\u00fcy\u00fck par\u00e7ac\u0131k k\u00fcmeleri olu\u015fturmas\u0131 olgusunu ifade eder. \u015eu anda ultra ince tozlar\u0131n topakla\u015fmas\u0131n\u0131n \u00fc\u00e7 ana nedeni oldu\u011funa inan\u0131lmaktad\u0131r: ultra ince tozlar\u0131n topakla\u015fmas\u0131na neden olan molek\u00fcller aras\u0131 kuvvetler; topakla\u015fmaya neden olan par\u00e7ac\u0131klar aras\u0131ndaki elektrostatik kuvvetler; ve havada par\u00e7ac\u0131k yap\u0131\u015fmas\u0131.<\/p>\n

1. Molek\u00fcller aras\u0131 kuvvetler ultra ince toz topakla\u015fmas\u0131na neden olur<\/p>\n

Mineral<\/a> malzeme belirli bir seviyenin alt\u0131nda \u00e7ok ince oldu\u011funda, par\u00e7ac\u0131klar aras\u0131ndaki mesafe son derece k\u0131sa olur ve par\u00e7ac\u0131klar aras\u0131ndaki van der Waals kuvveti, par\u00e7ac\u0131klar\u0131n kendi yer\u00e7ekiminden \u00e7ok daha b\u00fcy\u00fckt\u00fcr. Bu nedenle, bu t\u00fcr ultra ince par\u00e7ac\u0131klar birbirini \u00e7ekme ve topaklanma e\u011filimindedir. Ultra ince par\u00e7ac\u0131klar\u0131n y\u00fczeyindeki hidrojen ba\u011flar\u0131, adsorbe edilmi\u015f \u0131slak k\u00f6pr\u00fcler ve di\u011fer kimyasal ba\u011flar da par\u00e7ac\u0131klar aras\u0131nda kolayca yap\u0131\u015fma ve topakla\u015fmaya yol a\u00e7abilir.<\/p>\n

2. Par\u00e7ac\u0131klar aras\u0131ndaki elektrostatik kuvvetler topakla\u015fmaya neden olur<\/p>\n

Mineral<\/a> malzemelerin ultra ince i\u015flenmesi s\u0131ras\u0131nda darbe, s\u00fcrt\u00fcnme ve par\u00e7ac\u0131k boyutunun k\u00fc\u00e7\u00fclt\u00fclmesi nedeniyle yeni ultra ince par\u00e7ac\u0131klar\u0131n y\u00fczeyinde b\u00fcy\u00fck miktarda pozitif veya negatif y\u00fck birikir. Bu par\u00e7ac\u0131klar\u0131n y\u00fczeyindeki \u00e7\u0131k\u0131nt\u0131lar\u0131n bir k\u0131sm\u0131 pozitif, bir k\u0131sm\u0131 ise negatif y\u00fckl\u00fcd\u00fcr. Bu y\u00fckl\u00fc par\u00e7ac\u0131klar son derece karars\u0131zd\u0131r. Kararl\u0131 olabilmek i\u00e7in birbirlerini \u00e7ekerler ve keskin k\u00f6\u015felerde birbirleriyle temas edip birle\u015ferek par\u00e7ac\u0131klar\u0131n topakla\u015fmas\u0131na neden olurlar. Bu i\u015flemde ana kuvvet elektrostatik kuvvettir.<\/p>\n

3. Par\u00e7ac\u0131klar\u0131n havada yap\u0131\u015fmas\u0131<\/p>\n

Havan\u0131n ba\u011f\u0131l nemi %65’i a\u015ft\u0131\u011f\u0131nda, par\u00e7ac\u0131klar\u0131n y\u00fczeyinde ve par\u00e7ac\u0131klar aras\u0131nda su buhar\u0131 yo\u011funla\u015fmaya ba\u015flar ve par\u00e7ac\u0131klar aras\u0131nda s\u0131v\u0131 k\u00f6pr\u00fclerin olu\u015fmas\u0131 nedeniyle aglomerasyon etkisi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde artar.<\/p>\n

Ultra ince tozun da\u011f\u0131l\u0131m\u0131<\/p>\n

Ultra ince tozlar\u0131n dispersiyonu esas olarak par\u00e7ac\u0131klar\u0131n gaz faz\u0131ndaki ortamdaki dispersiyon durumuna ve s\u0131v\u0131 fazdaki dispersiyon durumuna odaklan\u0131r.<\/p>\n

S\u0131v\u0131 fazda da\u011f\u0131l\u0131m y\u00f6ntemi: 1. Mekanik da\u011f\u0131l\u0131m y\u00f6ntemi. (Mekanik dispersiyon y\u00f6ntemi, nanopartik\u00fcllerin ortamda tamamen da\u011f\u0131lmas\u0131 i\u00e7in harici kesme kuvveti veya darbe kuvveti gibi mekanik enerji kullanan bir y\u00f6ntemdir. Mekanik dispersiyon y\u00f6ntemleri aras\u0131nda \u00f6\u011f\u00fctme, s\u0131radan bilyal\u0131 de\u011firmen, titre\u015fimli bilyal\u0131 de\u011firmen, kolloid de\u011firmeni, haval\u0131 de\u011firmen, mekanik kar\u0131\u015ft\u0131rma yer al\u0131r. , vb.) \u00a02. Kimyasal da\u011f\u0131l\u0131m y\u00f6ntemi 3. Ultrasonik y\u00f6ntem<\/p>\n

Gaz faz\u0131nda dispersiyon y\u00f6ntemi: 1. Kuru ve dispersiyon 2. \u00a0Mekanik dispersiyon (Mekanik dispersiyon, par\u00e7ac\u0131klar\u0131n topaklanmas\u0131n\u0131 k\u0131rmak i\u00e7in mekanik kuvvet kullan\u0131lmas\u0131n\u0131 ifade eder. Bunun gerekli ko\u015fulu, mekanik kuvvetin par\u00e7ac\u0131klar aras\u0131ndaki yap\u0131\u015fma kuvvetinden daha b\u00fcy\u00fck olmas\u0131d\u0131r. Genellikle) mekanik kuvvet, y\u00fcksek h\u0131zl\u0131 d\u00f6nen pervane diskinin veya jetin neden oldu\u011fu hava ak\u0131\u015f\u0131n\u0131n g\u00fc\u00e7l\u00fc t\u00fcrb\u00fclansl\u0131 hareketinden ve y\u00fcksek h\u0131zl\u0131 hava ak\u0131\u015f\u0131n\u0131n etkisinden kaynaklan\u0131r.)\u00a0 3. Elektrostatik da\u011f\u0131l\u0131m<\/p>\n

Ultra ince toz i\u00e7in bir\u00e7ok modifikasyon y\u00f6ntemi vard\u0131r ve bunlar da \u00f6nceki ana ak\u0131m y\u00f6ntemlerden olduk\u00e7a farkl\u0131d\u0131r. Bununla birlikte, hangi y\u00f6ntem kullan\u0131l\u0131rsa kullan\u0131ls\u0131n, ultra ince tozun modifikasyon prensibini daha fazla incelemek ve \u00e7e\u015fitli modifikasyon gereksinimlerine uygun ve ger\u00e7ek \u00fcretime uygulanabilecek yeni bir modifikasyon y\u00f6ntemi bulmak gerekir.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ultra ince tozun topakla\u015fmas\u0131, orijinal toz par\u00e7ac\u0131klar\u0131n\u0131n haz\u0131rlama, ay\u0131rma, i\u015fleme ve depolama i\u015flemleri s\u0131ras\u0131nda birbirine ba\u011flanmas\u0131 ve birden fazla par\u00e7ac\u0131\u011f\u0131n daha b\u00fcy\u00fck par\u00e7ac\u0131k k\u00fcmeleri olu\u015fturmas\u0131 olgusunu ifade eder.<\/p>\n","protected":false},"author":7,"featured_media":130426,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[851],"tags":[],"class_list":["post-130462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-endustri-haberleri-tr"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/130462"}],"collection":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/comments?post=130462"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/posts\/130462\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media\/130426"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/media?parent=130462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/categories?post=130462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/tr\/wp-json\/wp\/v2\/tags?post=130462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}