200408615 五、發明說明（Ο 【發明的標的】 本發明係一種將鋁渣灰資源化利用之方法，主要是將 煉銘爐渣分選回收金屬銘後剩餘之紹渣灰廢棄物進行煆 燒’製成对火材料之原料’以達成紹〉查灰貧源化之目的’ 並創造更高的經濟價值。 【發明的背景】 鋁為高活性之金屬，因此再生鋁廠煉鋁過程中，易有 氧化浮渣之產生；此種浮渣移除冷卻後稱為煉is爐渣，簡 稱鋁渣。煉鋁除去鋁渣的過程中，部分之金屬鋁會夾雜其 中；故一般處理鋁渣之方式乃是將其中之殘留金屬鋁予以 分選回收，分選剩餘之物便將之拋棄。此被拋棄之物，稱 之為鋁渣灰。鋁渣灰的化學成分主要以氧化鋁、氧化矽、 氧化鈉、氧化鐵、氧化鎂及氧化鈣為主，其各成分的比例 隨著各廠家的原料及操作條件不同而略有變化，典型鋁渣 灰之化學成分如第四圖所示。而鋁渣灰顆粒大小亦隨著各 廠家篩選作業條件不同而異，通常在2 0篩目以下。 發明人在鋁渣灰資源化利用之領域從事研究及實作多 年，累積有豐富之實務經驗，民國8 9年間，發明人利用磷 酸或硫酸對鋁渣灰施以安定化之處理，復添加砂及水泥再 施以壓力製成水泥體之方法，提供了鋁渣灰資源化利用的 有效解決方案，該方法並取得中華民國發明第1 4 3 7 1 1號專 利，發明人經近年之再研究，又有本發明之產生。200408615 V. Description of the invention (0 [Inventive subject matter] The present invention is a method for reusing aluminum slag ash, mainly by sintering the remaining slag ash waste after the smelting furnace slag is sorted to recover the metal slag. The raw materials of the paired fire materials are 'for the purpose of achieving Shao> ash depletion, and create higher economic value. [Background of the invention] Aluminum is a highly active metal, so it is easy to have aluminum in the aluminum smelting process of secondary aluminum plants. The generation of oxidized scum; this slag is called smelting slag, referred to as aluminum slag after cooling and cooling. During the process of aluminum slag removal and aluminum slag, some metal aluminum will be mixed; The residual metal aluminum is sorted and recovered, and the remaining materials are sorted and discarded. This discarded material is called aluminum slag ash. The chemical composition of aluminum slag ash is mainly alumina, silica, and sodium oxide. , Iron oxide, magnesium oxide and calcium oxide, the proportion of each component varies slightly with different manufacturers' raw materials and operating conditions. The chemical composition of a typical aluminum slag ash is shown in the fourth figure. And aluminum slag ash the size of granule With the different screening conditions of various manufacturers, it is usually less than 20 mesh. The inventor has engaged in research and implementation in the field of aluminum slag ash resource utilization for many years, and has accumulated rich practical experience. During the Republic of China in 1989, People use phosphoric acid or sulfuric acid to stabilize the aluminum slag ash, add sand and cement, and then apply pressure to make the cement body. This method provides an effective solution for the aluminum slag ash resource utilization. The invention No. 1 4 3 7 1 1 of the Republic of China, the inventor, after further research in recent years, has the invention of this invention.
第4頁 200408615 五、發明說明（2) 【發明的目的】 本發明乃根據鋁渣灰鋁含量高的特點，與耐火材料之 原料化學成分接近，故利用此一特性將其製成耐火材料之 原料。本方法不僅可以將鋁渣灰充分資源化再利用，解決 鋁渣灰處理之問題；而且可以提高鋁渣灰之附加價值及有 效減少製造耐火材料原料之資源及能源之浪費。 【發明的主要說明】 鋁是地殼中存量最豐富的金屬元素，性極活潑，在自 然界中並不以金屬的狀態存在，直到十九世紀鋁金屬提煉 技術的出現，鋁金屬的應用才逐漸開始，而到目前為止已 成為用量僅次於鐵的金屬，且持續增加當中。 因為鋁的化性活潑，故其高溫冶鍊時氧化情形無法避 免；除此之外，原料中含有水分及有機物，亦是亦是造成 金屬紹氧化的原因之一。此氧化物比重小，遂浮於紹液表 面，形成浮渔，將浮渣移除冷卻後即為鋁渣。因此，鋁渣 除了夾雜部分之金屬鋁外，其絕大多數的氧化物皆為氧化 ί呂。而铭潰分選回收金屬銘後剩下之銘渣灰，其主要成分 亦將是以氧化鋁為最主要的組成。本發明即針對鋁渣灰含 鋁量高的特性，加以資源化利用，提出既經濟又有效的方 法，將原本需視為廢棄物處理之鋁渣灰，製成高單價的耐 火材料之原料。 請參閱第一圖，本發明之主要步驟係： 1.以鋁渣灰為原料；Page 4 200408615 V. Description of the invention (2) [Objective of the invention] The present invention is based on the characteristics of high slag and aluminum content of aluminum slag, which is close to the chemical composition of the raw material of the refractory material, so it is used to make it into a refractory material. raw material. This method can not only fully recycle aluminum slag ash and solve the problem of aluminum slag ash treatment, but also increase the added value of aluminum slag ash and effectively reduce the waste of resources and energy for manufacturing refractory raw materials. [Main description of the invention] Aluminum is the most abundant metal element in the earth's crust. It is extremely lively and does not exist as a metal in nature. Until the emergence of aluminum metal refining technology in the 19th century, the application of aluminum metal gradually began. , And so far it has become the second most used metal, and it continues to increase. Because of its chemical nature, aluminum cannot be oxidized during chain smelting at high temperature. In addition, the raw materials contain moisture and organic matter, which is one of the reasons for the oxidation of metals. This oxide has a small specific gravity, and then floats on the surface of the liquid, forming a floating fishery. After removing and cooling the scum, it becomes an aluminum slag. Therefore, with the exception of the metallic aluminum contained in the aluminum slag, most of its oxides are oxidized. The main component of the incineration ash remaining after the ingot separation and recovery of metal inscriptions will also be alumina. The present invention aims at the characteristics of high aluminum content of aluminum slag ash, and utilizes it as a resource. It proposes an economical and effective method to treat aluminum slag ash that should be treated as waste to make high-price refractory materials. Please refer to the first figure. The main steps of the present invention are: 1. Use aluminum slag as raw material;
200408615 五、發明說明（3) 2. 進行高溫煆燒、安定化； 3. 製成耐火材料之原料。 亦即，本發明主要的方法是利用高溫窯爐將鋁渣灰高 溫煆燒，使其轉變成為主要成分為氧化鋁（礦物結晶相為 剛玉）之材料，以做為耐火材料之原料使用，煆燒中，影 響資源化再利用之A1N (氮化鋁）及A14C3 (碳化鋁）將趨 於安定。 前述之高溫煆燒，其溫度範圍係自8 0 0 °C至1 8 0 0 t。 又上述之鋁渣灰係指煉鋁爐渣分選回收金屬鋁後之剩 餘物或是煉鋁爐渣經粉碎研磨過程而使顆粒變細者。 根據上述方法煆燒至8 0 0 °C後之鋁渣灰材料，從其X光 繞射分析（XRD )的結果便可看出有明顯之鋼玉結晶相產 生（第二圖所示即為鋁渔灰1 3 0 0 °C煆燒XRD結果，圖中X軸 及Y軸是表示X光照射角度及強度），上述鋼玉結晶相隨著 煆燒的溫度越高而越明顯（第三圖為鋁渣灰8 0 0 °C至 1 5 0 0 °C煆燒XRD結果之堆疊圖），因此控制鋁渣灰煆燒的溫 度，所製得之原料則可配合不同等級耐火材料應用之需 要，此所稱之对火材料包括对火磚、对火泥、洗注料等定 型及不定型耐火材料；又所稱耐火材料之原料係指耐火材 料製造過程中之添加物者。 煆燒過程中，影響其資源化再利用之A 1 N (氮化鋁） 及A 14 C3 (碳化鋁）將趨於安定，其反應式如下： 4A1N + 7〇2~>2Α12〇3 + 4N02 AI4C3 + 6〇2_>2Al2〇3 + 3C〇2200408615 V. Description of the invention (3) 2. High temperature sintering and stabilization; 3. Raw materials for making refractory materials. That is, the main method of the present invention is to use a high-temperature kiln to sinter the aluminum slag ash at a high temperature to transform it into a material whose main component is alumina (mineral crystal phase is corundum) for use as a raw material for refractory materials. During firing, the A1N (aluminum nitride) and A14C3 (aluminum carbide) that affect the recycling of resources will tend to stabilize. The aforementioned high-temperature sintering has a temperature range from 800 ° C to 180 ° t. The above-mentioned aluminum slag ash refers to the residue after the aluminum slag is sorted to recover metal aluminum or the aluminum slag is pulverized to make the particles finer. According to the above method, the aluminum slag ash material calcined to 800 ° C can be seen from the results of X-ray diffraction analysis (XRD). XRD results of fish ash at 1 3 0 0 ° C. The X-axis and Y-axis in the figure indicate the angle and intensity of X-ray irradiation. The crystal phase of the above-mentioned steel and jade is more obvious as the temperature of the fire is higher (the third figure is Aluminium slag ash calcination XRD result stacking chart from 80 0 ° C to 15 0 ° C), so the temperature of aluminum slag ash calcination is controlled, and the raw materials produced can meet the needs of different grades of refractory applications, The so-called refractory materials include shaped and unshaped refractory materials such as fire bricks, fire muds, washing materials, etc .; the so-called refractory raw materials refer to the additives in the manufacturing process of refractory materials. During the sintering process, A 1 N (aluminum nitride) and A 14 C3 (aluminum carbide), which affect its resource reuse, will tend to be stable. The reaction formula is as follows: 4A1N + 7〇2 ~ > 2Α12〇3 + 4N02 AI4C3 + 6〇2_ > 2Al2〇3 + 3C〇2
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