{"id":9003,"date":"2026-05-06T08:00:00","date_gmt":"2026-05-06T08:00:00","guid":{"rendered":"https:\/\/hoachatlocthien.com\/hcl-dung-trong-sat-thep-ra-sao\/"},"modified":"2026-05-06T08:00:00","modified_gmt":"2026-05-06T08:00:00","slug":"hcl-dung-trong-sat-thep-ra-sao-2","status":"publish","type":"post","link":"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2","title":{"rendered":"Axit HCl D\u00f9ng Trong S\u1ea3n Xu\u1ea5t S\u1eaft Th\u00e9p: Quy Tr\u00ecnh T\u1ea9y G\u1ec9 &#038; L\u01b0u \u00dd"},"content":{"rendered":"<article>\n<header class=\"hero\">\n<div class=\"kicker\">HCl ng\u00e0nh s\u1eaft th\u00e9p<\/div>\n<h1>Axit HCl D\u00f9ng Trong S\u1ea3n Xu\u1ea5t S\u1eaft Th\u00e9p: Quy Tr\u00ecnh T\u1ea9y G\u1ec9 &#038; L\u01b0u \u00dd<\/h1>\n<p class=\"meta\">Bien soan boi doi ngu ky thuat <strong>Hoa Chat Loc Thien<\/strong>.<\/p>\n<p>Trong ng\u00e0nh <strong>luy\u1ec7n kim v\u00e0 m\u1ea1 k\u1ebdm<\/strong>, axit clohidric (HCl) l\u00e0 h\u00f3a ch\u1ea5t ch\u1ee7 l\u1ef1c c\u1ee7a c\u00f4ng \u0111o\u1ea1n t\u1ea9y g\u1ec9 \u2013 pickling. HCl gi\u00fap lo\u1ea1i b\u1ecf l\u1edbp oxit s\u1eaft, v\u1ea3y th\u00e9p sau khi c\u00e1n n\u00f3ng, t\u1ea1o b\u1ec1 m\u1eb7t s\u1ea1ch s\u00e1ng \u0111\u1ec3 b\u01b0\u1edbc ti\u1ebfp theo (m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, m\u1ea1 \u0111i\u1ec7n, s\u01a1n t\u0129nh \u0111i\u1ec7n) b\u00e1m t\u1ed1t v\u00e0 b\u1ec1n h\u01a1n.<\/p>\n<p>B\u00e0i vi\u1ebft ph\u00e2n t\u00edch <strong>HCl d\u00f9ng trong s\u1eaft th\u00e9p nh\u01b0 th\u1ebf n\u00e0o<\/strong>, n\u1ed3ng \u0111\u1ed9 ph\u1ed5 bi\u1ebfn, quy tr\u00ecnh t\u1ea9y g\u1ec9 chu\u1ea9n v\u00e0 l\u01b0u \u00fd an to\u00e0n cho nh\u00e0 m\u00e1y.<\/p>\n<p class=\"note\">Noi dung tham khao, vui long doi chieu MSDS.<\/p>\n<\/header>\n<figure><img decoding=\"async\" class=\"thumb lazyload\" data-src=\"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2024\/01\/HCl-32-tinh-chat-dieu-che-va-an-toan-su-dung.webp\" alt=\"HCl 32%\" width=\"900\" height=\"500\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 900px; --smush-placeholder-aspect-ratio: 900\/500;\"><figcaption class=\"meta\" style=\"text-align:center\">HCl 32%<\/figcaption><\/figure>\n<div class=\"tag-list\"><span>HCl t\u1ea9y g\u1ec9<\/span><span>HCl s\u1eaft th\u00e9p<\/span><span>pickling th\u00e9p<\/span><span>axit clohidric m\u1ea1 k\u1ebdm<\/span><span>HCl 32%<\/span><\/div>\n<section id=\"vai-tro\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_72 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#1_Vai_tro_cua_HCl_trong_san_xuat_sat_thep\" title=\"1. Vai tr\u00f2 c\u1ee7a HCl trong s\u1ea3n xu\u1ea5t s\u1eaft th\u00e9p\">1. Vai tr\u00f2 c\u1ee7a HCl trong s\u1ea3n xu\u1ea5t s\u1eaft th\u00e9p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#2_Nong_do_HCl_nhiet_do_tay_gi_pho_bien\" title=\"2. N\u1ed3ng \u0111\u1ed9 HCl &#038; nhi\u1ec7t \u0111\u1ed9 t\u1ea9y g\u1ec9 ph\u1ed5 bi\u1ebfn\">2. N\u1ed3ng \u0111\u1ed9 HCl &#038; nhi\u1ec7t \u0111\u1ed9 t\u1ea9y g\u1ec9 ph\u1ed5 bi\u1ebfn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#3_Quy_trinh_tay_gi_thep_bang_HCl_tieu_chuan\" title=\"3. Quy tr\u00ecnh t\u1ea9y g\u1ec9 th\u00e9p b\u1eb1ng HCl ti\u00eau chu\u1ea9n\">3. Quy tr\u00ecnh t\u1ea9y g\u1ec9 th\u00e9p b\u1eb1ng HCl ti\u00eau chu\u1ea9n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#31_Tien_xu_ly\" title=\"3.1. Ti\u1ec1n x\u1eed l\u00fd\">3.1. Ti\u1ec1n x\u1eed l\u00fd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#32_Be_pickling_HCl\" title=\"3.2. B\u1ec3 pickling HCl\">3.2. B\u1ec3 pickling HCl<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#33_Rua_trung_hoa\" title=\"3.3. R\u1eeda &#038; trung h\u00f2a\">3.3. R\u1eeda &#038; trung h\u00f2a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#34_Quan_ly_dung_dich_HCl_thai\" title=\"3.4. Qu\u1ea3n l\u00fd dung d\u1ecbch HCl th\u1ea3i\">3.4. Qu\u1ea3n l\u00fd dung d\u1ecbch HCl th\u1ea3i<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#4_Luu_y_an_toan_khi_su_dung_HCl_trong_nha_may_thep\" title=\"4. L\u01b0u \u00fd an to\u00e0n khi s\u1eed d\u1ee5ng HCl trong nh\u00e0 m\u00e1y th\u00e9p\">4. L\u01b0u \u00fd an to\u00e0n khi s\u1eed d\u1ee5ng HCl trong nh\u00e0 m\u00e1y th\u00e9p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#Lien_he_Hoa_Chat_Loc_Thien\" title=\"Lien he Hoa Chat Loc Thien\">Lien he Hoa Chat Loc Thien<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/hoachatlocthien.com\/zh\/hcl-dung-trong-sat-thep-ra-sao-2\/#FAQ\" title=\"FAQ\">FAQ<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"1_Vai_tro_cua_HCl_trong_san_xuat_sat_thep\"><\/span>1. Vai tr\u00f2 c\u1ee7a HCl trong s\u1ea3n xu\u1ea5t s\u1eaft th\u00e9p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Sau khi c\u00e1n n\u00f3ng, b\u1ec1 m\u1eb7t th\u00e9p ph\u1ee7 m\u1ed9t l\u1edbp oxit s\u1eaft (Fe2O3, Fe3O4, FeO) g\u1ecdi l\u00e0 v\u1ea3y c\u00e1n. L\u1edbp n\u00e0y c\u1ee9ng, gi\u00f2n, g\u00e2y c\u1ea3n tr\u1edf cho c\u00e1c c\u00f4ng \u0111o\u1ea1n gia c\u00f4ng sau. HCl ph\u1ea3n \u1ee9ng v\u1edbi oxit s\u1eaft theo c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh:<\/p>\n<ul>\n<li>Fe2O3 + 6HCl \u2192 2FeCl3 + 3H2O<\/li>\n<li>Fe3O4 + 8HCl \u2192 FeCl2 + 2FeCl3 + 4H2O<\/li>\n<li>FeO + 2HCl \u2192 FeCl2 + H2O<\/li>\n<\/ul>\n<p>S\u1ea3n ph\u1ea9m ph\u1ee5 FeCl2 sau pickling c\u00f2n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i ch\u1ebf th\u00e0nh <strong>FeCl3<\/strong> \u2013 h\u00f3a ch\u1ea5t keo t\u1ee5 trong x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i, ho\u1eb7c thu h\u1ed3i HCl theo c\u00f4ng ngh\u1ec7 pyrohydrolysis.<\/p>\n<\/section>\n<section id=\"nong-do\">\n<h2><span class=\"ez-toc-section\" id=\"2_Nong_do_HCl_nhiet_do_tay_gi_pho_bien\"><\/span>2. N\u1ed3ng \u0111\u1ed9 HCl &#038; nhi\u1ec7t \u0111\u1ed9 t\u1ea9y g\u1ec9 ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table class='specs'>\n<tr>\n<th>Lo\u1ea1i b\u1ec3 pickling<\/th>\n<th>N\u1ed3ng \u0111\u1ed9 HCl<\/th>\n<th>Nhi\u1ec7t \u0111\u1ed9<\/th>\n<th>Th\u1eddi gian ng\u00e2m<\/th>\n<\/tr>\n<tr>\n<td>Pickling th\u00e9p t\u1ea5m c\u00e1n n\u00f3ng<\/td>\n<td>14\u201318% HCl<\/td>\n<td>50\u201370\u00b0C<\/td>\n<td>3\u201310 ph\u00fat<\/td>\n<\/tr>\n<tr>\n<td>Pickling d\u00e2y th\u00e9p, \u1ed1ng th\u00e9p<\/td>\n<td>10\u201315% HCl<\/td>\n<td>30\u201345\u00b0C<\/td>\n<td>5\u201315 ph\u00fat<\/td>\n<\/tr>\n<tr>\n<td>T\u1ea9y tr\u01b0\u1edbc m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng<\/td>\n<td>10\u201318% HCl + \u1ee9c ch\u1ebf \u0103n m\u00f2n<\/td>\n<td>20\u201335\u00b0C<\/td>\n<td>10\u201330 ph\u00fat<\/td>\n<\/tr>\n<\/table>\n<p class='note'>\u0110\u1ec3 gi\u1ea3m hao m\u00f2n th\u00e9p n\u1ec1n, nhi\u1ec1u nh\u00e0 m\u00e1y b\u1ed5 sung ch\u1ea5t \u1ee9c ch\u1ebf \u0103n m\u00f2n (urotropin, amine).<\/p>\n<\/section>\n<figure style=\"margin:18px 0;text-align:center;\"><img decoding=\"async\" class=\"thumb lazyload\" data-src=\"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2023\/12\/ung-dung-hcl-32-trong-cong-nghiep.webp\" alt=\"\u1ee9ng d\u1ee5ng hcl 32% trong c\u00f4ng nghi\u1ec7p\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\"><figcaption class=\"meta\">\u1ee9ng d\u1ee5ng hcl 32% trong c\u00f4ng nghi\u1ec7p<\/figcaption><\/figure>\n<section id=\"quy-trinh\">\n<h2><span class=\"ez-toc-section\" id=\"3_Quy_trinh_tay_gi_thep_bang_HCl_tieu_chuan\"><\/span>3. Quy tr\u00ecnh t\u1ea9y g\u1ec9 th\u00e9p b\u1eb1ng HCl ti\u00eau chu\u1ea9n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"31_Tien_xu_ly\"><\/span>3.1. Ti\u1ec1n x\u1eed l\u00fd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>R\u1eeda d\u1ea7u m\u1ee1 b\u1eb1ng dung d\u1ecbch ki\u1ec1m\/NaOH 5\u201310%, sau \u0111\u00f3 r\u1eeda n\u01b0\u1edbc.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"32_Be_pickling_HCl\"><\/span>3.2. B\u1ec3 pickling HCl<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ng\u00e2m th\u00e9p trong dung d\u1ecbch HCl 10\u201318%, ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 n\u1ed3ng \u0111\u1ed9 axit t\u1ef1 do (th\u01b0\u1eddng gi\u1eef axit t\u1ef1 do \u2265 6%). B\u1ec3 n\u00ean c\u00f3 h\u1ec7 h\u00fat h\u01a1i axit v\u00e0 x\u1eed l\u00fd b\u1eb1ng th\u00e1p h\u1ea5p th\u1ee5 v\u1edbi NaOH.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"33_Rua_trung_hoa\"><\/span>3.3. R\u1eeda &#038; trung h\u00f2a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sau pickling, r\u1eeda th\u00e9p qua 2\u20133 b\u1ec3 n\u01b0\u1edbc cascade. N\u1ebfu \u0111i m\u1ea1 k\u1ebdm, ng\u00e2m th\u00eam b\u1ec3 flux (ZnCl2 + NH4Cl) tr\u01b0\u1edbc khi nh\u00fang k\u1ebdm n\u00f3ng ch\u1ea3y.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"34_Quan_ly_dung_dich_HCl_thai\"><\/span>3.4. Qu\u1ea3n l\u00fd dung d\u1ecbch HCl th\u1ea3i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Khi n\u1ed3ng \u0111\u1ed9 axit t\u1ef1 do gi\u1ea3m c\u00f2n 2\u20133%, dung d\u1ecbch ch\u1ee9a nhi\u1ec1u FeCl2\/FeCl3 c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd: trung h\u00f2a b\u1eb1ng v\u00f4i\/NaOH, ho\u1eb7c t\u00e1i ch\u1ebf th\u00e0nh <strong>FeCl3 keo t\u1ee5<\/strong>, ho\u1eb7c thu h\u1ed3i HCl b\u1eb1ng c\u00f4ng ngh\u1ec7 t\u00e1i sinh.<\/p>\n<\/section>\n<section id=\"an-toan\">\n<h2><span class=\"ez-toc-section\" id=\"4_Luu_y_an_toan_khi_su_dung_HCl_trong_nha_may_thep\"><\/span>4. L\u01b0u \u00fd an to\u00e0n khi s\u1eed d\u1ee5ng HCl trong nh\u00e0 m\u00e1y th\u00e9p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>H\u01a1i HCl \u0103n m\u00f2n m\u1ea1nh \u0111\u01b0\u1eddng th\u1edf \u2013 b\u1ec3 pickling ph\u1ea3i c\u00f3 l\u01b0\u1edbi h\u00fat h\u01a1i v\u00e0 th\u00e1p x\u1eed l\u00fd.<\/li>\n<li>V\u1eadt li\u1ec7u b\u1ed3n ch\u1ee9a: PE\/PP\/FRP. \u0110\u01b0\u1eddng \u1ed1ng v\u00e0 van b\u1eb1ng PVC\/CPVC.<\/li>\n<li>Khu pha lo\u00e3ng t\u00e1ch bi\u1ec7t khu ch\u1ee9a NaOH, oxy h\u00f3a m\u1ea1nh.<\/li>\n<li>Nh\u00e2n vi\u00ean ph\u1ea3i m\u1eb7c PPE: k\u00ednh, g\u0103ng PVC d\u00e0i, \u1ee7ng, t\u1ea1p d\u1ec1 ch\u1ed1ng axit.<\/li>\n<li>C\u00f3 v\u00f2i r\u1eeda kh\u1ea9n c\u1ea5p, v\u00f2i r\u1eeda m\u1eaft v\u00e0 k\u1ebf ho\u1ea1ch \u1ee9ng ph\u00f3 tr\u00e0n \u0111\u1ed5.<\/li>\n<\/ul>\n<\/section>\n<section id=\"lien-he\">\n<h2><span class=\"ez-toc-section\" id=\"Lien_he_Hoa_Chat_Loc_Thien\"><\/span>Lien he Hoa Chat Loc Thien<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Doi ngu ky thuat <strong>Hoa Chat Loc Thien<\/strong> san sang ho tro doanh nghiep.<\/p>\n<ul>\n<li>Hotline: <a href=\"tel:0979891929\">0979 89 1929<\/a><\/li>\n<li>Email: <a href=\"mailto:locthien@locthien.vn\">locthien@locthien.vn<\/a><\/li>\n<li>Website: <a href=\"https:\/\/hoachatlocthien.com\/\">hoachatlocthien.com\/<\/a><\/li>\n<\/ul>\n<\/section>\n<section id=\"faq\" class=\"faq\">\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li><strong>HCl trong s\u1eaft th\u00e9p d\u00f9ng l\u00e0m g\u00ec?<\/strong><br \/>HCl \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ea9y g\u1ec9 (pickling) th\u00e9p sau c\u00e1n n\u00f3ng, lo\u1ea1i b\u1ecf l\u1edbp oxit s\u1eaft, l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc khi m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, m\u1ea1 \u0111i\u1ec7n ho\u1eb7c s\u01a1n t\u0129nh \u0111i\u1ec7n.<\/li>\n<li><strong>N\u1ed3ng \u0111\u1ed9 HCl bao nhi\u00eau l\u00e0 ph\u00f9 h\u1ee3p cho pickling th\u00e9p?<\/strong><br \/>Ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 HCl 10\u201318%, nhi\u1ec7t \u0111\u1ed9 30\u201370\u00b0C, th\u1eddi gian ng\u00e2m 3\u201330 ph\u00fat t\u00f9y lo\u1ea1i s\u1ea3n ph\u1ea9m. HCl 32% th\u01b0\u01a1ng m\u1ea1i \u0111\u01b0\u1ee3c pha lo\u00e3ng \u0111\u1ec3 \u0111\u1ea1t n\u1ed3ng \u0111\u1ed9 n\u00e0y trong b\u1ec3.<\/li>\n<li><strong>V\u00ec sao ph\u1ea3i b\u1ed5 sung ch\u1ea5t \u1ee9c ch\u1ebf \u0103n m\u00f2n v\u00e0o b\u1ec3 pickling?<\/strong><br \/>Ch\u1ea5t \u1ee9c ch\u1ebf \u0103n m\u00f2n (urotropin, amine, d\u1ea7u kho\u00e1ng) gi\u00fap HCl ch\u1ec9 t\u1ea5n c\u00f4ng l\u1edbp oxit m\u00e0 gi\u1ea3m t\u1ed1i \u0111a \u0103n m\u00f2n th\u00e9p n\u1ec1n, qua \u0111\u00f3 ti\u1ebft ki\u1ec7m h\u00f3a ch\u1ea5t v\u00e0 gi\u1eef ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t th\u00e9p.<\/li>\n<li><strong>Dung d\u1ecbch HCl th\u1ea3i sau pickling x\u1eed l\u00fd th\u1ebf n\u00e0o?<\/strong><br \/>C\u00f3 3 h\u01b0\u1edbng: trung h\u00f2a b\u1eb1ng v\u00f4i\/NaOH r\u1ed3i x\u1eed l\u00fd n\u01b0\u1edbc th\u1ea3i; t\u00e1i ch\u1ebf th\u00e0nh FeCl3 keo t\u1ee5; ho\u1eb7c t\u00e1i sinh HCl b\u1eb1ng c\u00f4ng ngh\u1ec7 pyrohydrolysis \u1edf c\u00e1c nh\u00e0 m\u00e1y l\u1edbn.<\/li>\n<li><strong>L\u1ed9c Thi\u00ean c\u00f3 cung c\u1ea5p HCl cho nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm t\u1ea1i B\u00ecnh D\u01b0\u01a1ng kh\u00f4ng?<\/strong><br \/>C\u00f3. H\u00f3a Ch\u1ea5t L\u1ed9c Thi\u00ean giao HCl 32%\/35% cho c\u00e1c nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm, \u1ed1ng th\u00e9p, k\u1ebft c\u1ea5u th\u00e9p t\u1ea1i B\u00ecnh D\u01b0\u01a1ng, \u0110\u1ed3ng Nai, Long An b\u1eb1ng xe b\u1ed3n chuy\u00ean d\u1ee5ng v\u00e0 IBC 1.000L.<\/li>\n<\/ol>\n<\/section>\n<\/article>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Organization\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/#org\",\n      \"name\": \"Hoa Chat Loc Thien\",\n      \"url\": \"https:\/\/hoachatlocthien.com\/\",\n      \"logo\": \"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2025\/02\/logo-locthien.png\",\n      \"telephone\": \"+84979891929\",\n      \"email\": \"locthien@locthien.vn\"\n    },\n    {\n      \"@type\": \"BreadcrumbList\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/hcl-dung-trong-sat-thep-ra-sao\/#breadcrumb\",\n      \"itemListElement\": [\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 1,\n          \"name\": \"Trang chu\",\n          \"item\": \"https:\/\/hoachatlocthien.com\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 2,\n          \"name\": \"H\u00f3a ch\u1ea5t c\u00f4ng nghi\u1ec7p\",\n          \"item\": \"https:\/\/hoachatlocthien.com\/kien-thuc-hoa-chat\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 3,\n          \"name\": \"Axit HCl D\u00f9ng Trong S\u1ea3n Xu\u1ea5t S\u1eaft Th\u00e9p: Quy Tr\u00ecnh T\u1ea9y G\u1ec9 & L\u01b0u \u00dd\",\n          \"item\": \"https:\/\/hoachatlocthien.com\/hcl-dung-trong-sat-thep-ra-sao\/\"\n        }\n      ]\n    },\n    {\n      \"@type\": \"Article\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/hcl-dung-trong-sat-thep-ra-sao\/#article\",\n      \"headline\": \"Axit HCl D\u00f9ng Trong S\u1ea3n Xu\u1ea5t S\u1eaft Th\u00e9p: Quy Tr\u00ecnh T\u1ea9y G\u1ec9 & L\u01b0u \u00dd\",\n      \"description\": \"HCl d\u00f9ng trong s\u1eaft th\u00e9p \u0111\u1ec3 t\u1ea9y g\u1ec9 (pickling), l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc m\u1ea1 k\u1ebdm, m\u1ea1 \u0111i\u1ec7n. T\u00ecm hi\u1ec3u n\u1ed3ng \u0111\u1ed9 HCl, quy tr\u00ecnh t\u1ea9y g\u1ec9 v\u00e0 l\u01b0u \u00fd an to\u00e0n cho nh\u00e0 m\u00e1y luy\u1ec7n kim.\",\n      \"image\": \"https:\/\/hoachatlocthien.com\/wp-content\/uploads\/2024\/01\/HCl-32-tinh-chat-dieu-che-va-an-toan-su-dung.webp\",\n      \"datePublished\": \"2026-05-06T08:00:00+07:00\",\n      \"dateModified\": \"2026-05-06T08:00:00+07:00\",\n      \"author\": {\n        \"@type\": \"Organization\",\n        \"@id\": \"https:\/\/hoachatlocthien.com\/#org\",\n        \"name\": \"Hoa Chat Loc Thien\"\n      },\n      \"publisher\": {\n        \"@type\": \"Organization\",\n        \"@id\": \"https:\/\/hoachatlocthien.com\/#org\"\n      },\n      \"mainEntityOfPage\": {\n        \"@type\": \"WebPage\",\n        \"@id\": \"https:\/\/hoachatlocthien.com\/hcl-dung-trong-sat-thep-ra-sao\/\"\n      },\n      \"articleSection\": [\n        \"H\u00f3a ch\u1ea5t c\u00f4ng nghi\u1ec7p\",\n        \"Luy\u1ec7n kim\"\n      ],\n      \"keywords\": [\n        \"HCl t\u1ea9y g\u1ec9\",\n        \"HCl s\u1eaft th\u00e9p\",\n        \"pickling th\u00e9p\",\n        \"axit clohidric m\u1ea1 k\u1ebdm\",\n        \"HCl 32%\"\n      ]\n    },\n    {\n      \"@type\": \"FAQPage\",\n      \"@id\": \"https:\/\/hoachatlocthien.com\/hcl-dung-trong-sat-thep-ra-sao\/#faq-schema\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"HCl trong s\u1eaft th\u00e9p d\u00f9ng l\u00e0m g\u00ec?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"HCl \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ea9y g\u1ec9 (pickling) th\u00e9p sau c\u00e1n n\u00f3ng, lo\u1ea1i b\u1ecf l\u1edbp oxit s\u1eaft, l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc khi m\u1ea1 k\u1ebdm nh\u00fang n\u00f3ng, m\u1ea1 \u0111i\u1ec7n ho\u1eb7c s\u01a1n t\u0129nh \u0111i\u1ec7n.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"N\u1ed3ng \u0111\u1ed9 HCl bao nhi\u00eau l\u00e0 ph\u00f9 h\u1ee3p cho pickling th\u00e9p?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 HCl 10\u201318%, nhi\u1ec7t \u0111\u1ed9 30\u201370\u00b0C, th\u1eddi gian ng\u00e2m 3\u201330 ph\u00fat t\u00f9y lo\u1ea1i s\u1ea3n ph\u1ea9m. 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H\u00f3a Ch\u1ea5t L\u1ed9c Thi\u00ean giao HCl 32%\/35% cho c\u00e1c nh\u00e0 m\u00e1y m\u1ea1 k\u1ebdm, \u1ed1ng th\u00e9p, k\u1ebft c\u1ea5u th\u00e9p t\u1ea1i B\u00ecnh D\u01b0\u01a1ng, \u0110\u1ed3ng Nai, Long An b\u1eb1ng xe b\u1ed3n chuy\u00ean d\u1ee5ng v\u00e0 IBC 1.000L.\"\n          }\n        }\n      ]\n    }\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>HCl d\u00f9ng trong s\u1eaft th\u00e9p \u0111\u1ec3 t\u1ea9y g\u1ec9 (pickling), l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t tr\u01b0\u1edbc m\u1ea1 k\u1ebdm, m\u1ea1 \u0111i\u1ec7n. 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