{"id":59966,"date":"2024-01-16T12:56:15","date_gmt":"1970-01-01T00:00:00","guid":{"rendered":"https:\/\/minipress.ru\/katalog\/?p=59966"},"modified":"2024-01-16T12:56:15","modified_gmt":"1970-01-01T00:00:00","slug":"grinding-equipment","status":"publish","type":"post","link":"https:\/\/minipress.ru\/pharmaceutical-equipment\/technologies-and-equipment-for-the-production-of-powders\/grinding-equipment\/","title":{"rendered":"Grinding equipment"},"content":{"rendered":"
[vc_row][vc_column][vc_column_text]<\/span>\n\nThe<\/span> choice<\/span> of<\/span> equipment<\/span> for<\/span> grinding<\/span> is<\/span> determined<\/span> by<\/span> the<\/span> properties<\/span> of<\/span> the<\/span> processed<\/span> materials<\/span> and<\/span> the<\/span> degree<\/span> of<\/span> grinding.<\/span> A<\/span> ball<\/span> mill<\/span> consists<\/span> of<\/span> a<\/span> rotating<\/span> closed<\/span> drum<\/span> (porcelain<\/span> or<\/span> metal),<\/span> inside<\/span> which<\/span> steel<\/span> or<\/span> porcelain<\/span> crushing<\/span> balls<\/span> are<\/span> placed.<\/span> Mills<\/span> are<\/span> of<\/span> periodic<\/span> and<\/span> continuous<\/span> operation.<\/span> The<\/span> mill<\/span> is<\/span> hermetically<\/span> sealed<\/span> on<\/span> all<\/span> sides<\/span> and<\/span> has<\/span> only<\/span> one<\/span> loading<\/span> and<\/span> unloading<\/span> tightly<\/span> closing<\/span> hatch.<\/span> After<\/span> loading<\/span> the<\/span> drum<\/span> with<\/span> balls<\/span> and<\/span> crushed<\/span> material,<\/span> the<\/span> mill<\/span> is<\/span> put<\/span> into<\/span> rotational<\/span> motion.<\/span> The<\/span> grinding<\/span> of<\/span> the<\/span> material<\/span> occurs<\/span> due<\/span> to<\/span> impact<\/span> (the<\/span> ball<\/span> nozzle<\/span> falls<\/span> on<\/span> the<\/span> crushed<\/span> material),<\/span> abrasion<\/span> and<\/span> partially<\/span> crushing<\/span> effects.<\/span> The<\/span> advantages<\/span> of<\/span> a<\/span> ball<\/span> mill<\/span> are<\/span> simplicity<\/span> of<\/span> design,<\/span> ease<\/span> of<\/span> operation<\/span> and<\/span> the<\/span> absence<\/span> of<\/span> powder<\/span> spraying<\/span> during<\/span> operation.<\/span> The<\/span> disadvantages<\/span> include<\/span> the<\/span> heterogeneity<\/span> of<\/span> the<\/span> final<\/span> product<\/span> (granulometric<\/span> composition),<\/span> which<\/span> requires<\/span> additional<\/span> operations,<\/span> such<\/span> as<\/span> sieving.<\/span> A<\/span> rod<\/span> mill<\/span> is<\/span> similar<\/span> in<\/span> design<\/span> to<\/span> a<\/span> ball<\/span> mill,<\/span> but<\/span> differs<\/span> in<\/span> the<\/span> shape<\/span> of<\/span> grinding<\/span> bodies,<\/span> which<\/span> are<\/span> steel<\/span> rods<\/span> with<\/span> a<\/span> diameter<\/span> of<\/span> 40-100<\/span> mm<\/span> and<\/span> a<\/span> length<\/span> of<\/span> 25-50<\/span> mm<\/span> less<\/span> than<\/span> the<\/span> length<\/span> of<\/span> the<\/span> drum.<\/span> The<\/span> rods<\/span> come<\/span> into<\/span> contact<\/span> with<\/span> the<\/span> material<\/span> at<\/span> many<\/span> points<\/span> and<\/span> first<\/span> of<\/span> all<\/span> crush<\/span> large<\/span> particles,<\/span> protecting<\/span> small<\/span> ones<\/span> from<\/span> over-grinding.<\/span> Therefore,<\/span> the<\/span> product<\/span> in<\/span> a<\/span> rod<\/span> mill<\/span> turns<\/span> out<\/span> to<\/span> be<\/span> more<\/span> uniform<\/span> in<\/span> size<\/span> than<\/span> in<\/span> a<\/span> ball<\/span> mill.<\/span> The<\/span> principle<\/span> of<\/span> operation<\/span> of<\/span> a<\/span> vertical<\/span> ball<\/span> mill<\/span> is<\/span> as<\/span> follows:<\/span> the<\/span> crushed<\/span> substance<\/span> is<\/span> loaded<\/span> using<\/span> a<\/span> pump<\/span> 6,<\/span> when<\/span> the<\/span> rotor<\/span> rotates,<\/span> solid<\/span> particles<\/span> of<\/span> the<\/span> material<\/span> are<\/span> crushed<\/span> as<\/span> a<\/span> result<\/span> of<\/span> friction<\/span> against<\/span> grinding<\/span> bodies<\/span> and<\/span> against<\/span> each<\/span> other.<\/span> The<\/span> finished<\/span> product<\/span> exits<\/span> through<\/span> the<\/span> nozzle<\/span> 7<\/span> in<\/span> the<\/span> upper<\/span> part<\/span> of<\/span> the<\/span> cylinder.<\/span> When<\/span> grinding<\/span> in<\/span> the<\/span> factory,<\/span> it<\/span> is<\/span> necessary<\/span> to<\/span> take<\/span> into<\/span> account<\/span> that,<\/span> for<\/span> example,<\/span> rhubarb<\/span> rhizomes<\/span> require<\/span> some<\/span> effort,<\/span> and<\/span> for<\/span> grinding<\/span> sugar<\/span> \u2014<\/span> others,<\/span> much<\/span> smaller.<\/span>\n\n[\/vc_column_text][\/vc_column][\/vc_row]<\/span><\/span><\/pre>\n","protected":false},"excerpt":{"rendered":"
[vc_row][vc_column][vc_column_text] The choice of equipment for grinding is determined by the properties of the processed materials and the degree of grinding. A ball mill consists of a rotating closed drum (porcelain or metal), inside which steel or porcelain crushing balls are placed. Mills are of periodic and continuous operation. The mill is hermetically sealed on…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"inline_featured_image":false,"two_page_speed":[]},"categories":[2243],"tags":[2380,2277,2381,2372,2376,2373,263,2378,2374,43,2273,2274,2377,2370,2278,40,118,2379,119,2375,2276,2275,2371],"rttpg_featured_image_url":null,"rttpg_author":{"display_name":".. Author Roman Tsibulsky","author_link":"https:\/\/minipress.ru\/pharmaceutical-equipment\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":"TECHNOLOGIES AND EQUIPMENT FOR THE PRODUCTION OF POWDERS<\/a>","rttpg_excerpt":"[vc_row][vc_column][vc_column_text] The choice of equipment for grinding is determined by the properties of the processed materials and the degree of grinding. A ball mill consists of a rotating closed drum (porcelain or metal), inside which steel or porcelain crushing balls are placed. Mills are of periodic and continuous operation. The mill is hermetically sealed on...","_links":{"self":[{"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/posts\/59966"}],"collection":[{"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/comments?post=59966"}],"version-history":[{"count":0,"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/posts\/59966\/revisions"}],"wp:attachment":[{"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/media?parent=59966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/categories?post=59966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/minipress.ru\/pharmaceutical-equipment\/wp-json\/wp\/v2\/tags?post=59966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}