鋁礬土簡(jiǎn)介    鋁礬土（aluminous soil；bauxite）又稱礬土或鋁土礦，主要成分是氧化鋁，系含有雜質(zhì)的水合氧化鋁，是一種土狀礦物。白色或灰白色，因含鐵而呈褐黃或淺紅色。密度2.4-2.5g/cm3，硬度1～3，不透明，質(zhì)脆。極難熔化。不溶于水，能溶于硫酸、氫氧化鈉溶液。主要用于煉鋁，制耐火材料。
中文名 鋁礬土
外文名 aluminous soil bauxite
概  述 又稱礬土或鋁土礦，氧化鋁
主要成分 一水軟鋁石、一水硬鋁石
產(chǎn)地分布 已知賦存鋁土礦的國(guó)家有49個(gè)
產(chǎn)品用途 :煉鋁工業(yè) 精密鑄造。
主要成分    礬土礦學(xué)名鋁土礦、鋁礬土。其組成成分異常復(fù)雜，是多種地質(zhì)來源極不相同的含水氧化鋁礦石的總稱。如一水軟鋁石、一水硬鋁石和三水鋁石(Al2O3·3H2O）；有的是水鋁石和高嶺石（2SiO2·Al2O3·2H2O）相伴構(gòu)成；有的以高嶺石為主，且隨著高嶺石含量的增高，構(gòu)成為一般的鋁土巖或高嶺石質(zhì)粘土。鋁土礦一般是化學(xué)風(fēng)化或外生作用形成的，很少有純礦物，總是含有一些雜質(zhì)礦物，或多或少含有粘土礦物、鐵礦物、鈦礦物及碎屑重礦物等等。
    鋁土礦的定義名稱還不夠統(tǒng)一，這與各個(gè)國(guó)家的資源情況及工業(yè)需求有關(guān)。各個(gè)時(shí)期名稱也不一致，但基本上大同小異。在中國(guó)一般認(rèn)為：“鋁土礦系指礦石之含鋁量較高（40%以上），鋁硅比值大于2.5者(A/S≥2.5），其小于此數(shù)值者則稱為粘土礦或鋁土頁巖或鋁質(zhì)巖”。在中國(guó)已探明的鋁土礦儲(chǔ)量中，一水鋁石型鋁土礦占全國(guó)總儲(chǔ)量的98%左右。
產(chǎn)地分布    目前，已知賦存鋁土礦的國(guó)家有49個(gè)。中國(guó)有豐富的鋁礬土資源，約37億噸，居世界前列，與幾內(nèi)亞、澳大利亞、巴西同屬世界鋁礬土資源大國(guó)。但生產(chǎn)供耐火材料用的高鋁礬土的國(guó)家只有圭亞那和中國(guó)，其他國(guó)家的鋁礬土含鐵量高，多用于煉鋁和研磨材料。 
產(chǎn)品用途    ⑴煉鋁工業(yè)。用于國(guó)防、航空、汽車、電器、化工、日常生活用品等。
    ⑵精密鑄造。礬土熟料加工成細(xì)粉做成鑄模后精鑄。用于軍工、航天、通訊、儀表、機(jī)械及醫(yī)療器械部門。
    ⑶用于耐火制品。高鋁礬土熟料耐火度高達(dá)1780℃，化學(xué)穩(wěn)定性強(qiáng)、物理性能良好。
    ⑷硅酸鋁耐火纖維。具有重量輕，耐高溫，熱穩(wěn)定性好，導(dǎo)熱率低，熱容小和耐機(jī)械震動(dòng)等優(yōu)點(diǎn)。用于鋼鐵、有色冶金、電子、石油、化工、宇航、原子能、國(guó)防等多種工業(yè)。它是把高鋁熟料放進(jìn)融化溫度約為2000～2200℃的高溫電弧爐中，經(jīng)高溫熔化、高壓高速空氣或蒸汽噴吹、冷卻，就成了潔白的“棉花”——硅酸鋁耐火纖維。它可壓成纖維毯、板或織成布代替冶煉、化工、玻璃等工業(yè)高溫窯爐內(nèi)襯的耐火磚。消防人員可用耐火纖維布做成衣服。
    ⑸以鎂砂和礬土熟料為原料，加入適當(dāng)結(jié)合劑，用于澆注盛鋼桶整體桶襯效果甚佳。
    ⑹制造礬土水泥，研磨材料，陶瓷工業(yè)以及化學(xué)工業(yè)可制鋁的各種化合物。
耐火材料用鋁礬土數(shù)量的技術(shù)條件。
Introduction of bauxite
Bauxite (aluminous soil; bauxite), also known as alumina or bauxite, main ingredients are aluminum oxide, hydrate alumina containing impurities, is an earthy mineral. White or grey, brown yellow or light red by iron. 2.4 2.5 g/cm3 density, hardness, 1 ~ 3 is not transparent, very brittle. Very difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. Mainly used for aluminium, refractory material.
Chinese bauxite
Foreign names aluminous soil bauxite
Is also called alumina or bauxite, alumina
Main ingredients monohydrate soft diaspore, monohydrate hard diaspore
Distribution of origin known occurrence bauxite country has 49
Product use: precision casting aluminium industry.
Main ingredients
The scientific name bauxite bauxite, bauxite. Its composition is extremely complex, a variety of geological sources vary the floorboard of the hydrous alumina ore. As water soft diaspore, monohydrate hard diaspore and sanshui diaspore (Al2O3 · 3 h2o); Have a plenty of diaspore and kaolinite (2 sio2, Al2O3, 2 h2o) company; Some is given priority to with kaolinite, and with higher content of kaolinite, the form for general bauxite or kaolinite clay. Bauxite is generally formed by the chemical weathering or exogenous, there are few pure mineral, mineral always contains some impurities, more or less contain clay minerals, iron ore, titanium minerals and clastic heavy minerals and so on.
Bauxite definition names is not enough unity, this is related to resources from all countries and industrial demand. Name of various periods are inconsistent, but basically the same. In China it is generally believed: ";bauxite refers to the aluminum content of ore is higher (40%), al-si ratio (A/S (2.5 or higher) is greater than 2.5, which is less than the numerical value is called clay or shale or aluminum bauxite rock";. In China\"s proven reserves of bauxite, LvShiXing monohydrate bauxite accounts for about 98% of the country\"s total reserves.
The origin of a product distribution
At present, the known occurrence bauxite country has 49. China is rich in bauxite resources, about 3.7 billion tons, ranked among the top of the world, and guinea, Australia, Brazil powers belong to the world of bauxite resources. But high production for refractory bauxite only Guyana and China and other countries of the bauxite iron content is high, used for aluminium and abrasive materials. Product use
(1) aluminium industry. Used for defense, aerospace, automotive, electrical, chemical industry, daily necessities, etc.
2 precision casting. Alumina clinker made after mold precision casting processed into fine powder. Used in military industry, aerospace, communications, instrumentation, machinery and medical equipment department.
(3) for refractory products. High bauxite clinker as high as 1780 ℃ refractoriness, chemical stability strong, and good physical properties.
(4) aluminum silicate refractory fiber. With light weight, high temperature resistance, good thermal stability, low thermal conductivity, heat capacity is small and the advantages of resistance to mechanical shock. Used in iron and steel, nonferrous metallurgy, electronics, petroleum, chemical, aerospace, atomic energy, defense and other industries. It is the high alumina clinker in the melting temperature of about 2000 ~ 2200 ℃ high temperature electric arc furnace, via high pressure of high temperature melting, high-speed air or steam injection, cooling, became a white cotton - silicate aluminum refractory fiber. It can be pressed into fiber blanket, board or woven cloth instead of smelting, chemical industry, glass and other industrial furnace lining brick. Firefighters available refractory fiber cloth to make clothes.
5] with magnesia and bauxite clinker as raw material, add appropriate binder, used for pouring ladle whole ladle lining has particularly good effects.
[6] manufacture alumina cement, abrasive materials, ceramic industry and chemical industry of aluminum compounds.
Fire-proof material with bauxite quantity of technical conditions.
Introduction of bauxite
Bauxite (aluminous soil; bauxite), also known as alumina or bauxite, main ingredients are aluminum oxide, hydrate alumina containing impurities, is an earthy mineral. White or grey, brown yellow or light red by iron. 2.4 2.5 g/cm3 density, hardness, 1 ~ 3 is not transparent, very brittle. Very difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. Mainly used for aluminium, refractory material.
Chinese bauxite
Foreign names aluminous soil bauxite
Is also called alumina or bauxite, alumina
Main ingredients monohydrate soft diaspore, monohydrate hard diaspore
Distribution of origin known occurrence bauxite country has 49
Product use: precision casting aluminium industry.
Main ingredients
The scientific name bauxite bauxite, bauxite. Its composition is extremely complex, a variety of geological sources vary the floorboard of the hydrous alumina ore. As water soft diaspore, monohydrate hard diaspore and sanshui diaspore (Al2O3 · 3 h2o); Have a plenty of diaspore and kaolinite (2 sio2, Al2O3, 2 h2o) company; Some is given priority to with kaolinite, and with higher content of kaolinite, the form for general bauxite or kaolinite clay. Bauxite is generally formed by the chemical weathering or exogenous, there are few pure mineral, mineral always contains some impurities, more or less contain clay minerals, iron ore, titanium minerals and clastic heavy minerals and so on.
Bauxite definition names is not enough unity, this is related to resources from 
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鞏義市豐泰耐材磨料有限公司是一家經(jīng)國(guó)家相關(guān)部門批準(zhǔn)注冊(cè)的企業(yè),主要經(jīng)營(yíng)碳化硅、棕剛玉、白剛玉、黑剛玉、核桃殼、石榴石、除銹砂、鋁礬土、搗打料、耐火泥等各種耐材材料及磨料。我公司憑著良好的信譽(yù)、優(yōu)質(zhì)的服務(wù)，已經(jīng)與多家企業(yè)建立了長(zhǎng)期的友好合作關(guān)系。我們熱誠(chéng)歡迎各界朋友前來參觀考察、洽談業(yè)務(wù)，并對(duì)我司提出您寶貴的建議！恭候您的光臨~ Gongyi Fongtay Refractories Abrasive Co., Ltd, as an enterprise registered with the approval of relevant national authorities, mainly product Carborundum, Corundum, White Alundum, Black Corundum, Walnut Shell, Garnet, Derusting Sand, Bauxite, Ramming Mterial, Refractory Mortar of all kinds of refractories materials and abrasive. Our company is adhering to the good reputation and high quality service, have established a long-term friendly and mutual benifits relationships with numbers of enterprises. We warmly welcome friends from all circles come to visit, negotiate the business, and put forward your valuable suggestions as well ! Awaits respectfully your coming~ 
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