公开(公告)号：WO1996009997A1

公开(公告)日：1996-04-04

申请号：PCT/RU1994000228

申请日：1994-09-28

Applicant: DABIZHA, Alexandr Axentievich ,  SHMOTIEV, Sergei Fedorovich ,  DABIZHA, Nadezhda Alexandrovna ,  SYCHEV, Vyacheslav Mikhailovich ,  CHEREMISINOV, Viktor Alexandrovich

IPC: C04B35/18

CPC classification number: C04B35/195 ,  C04B35/443 ,  C04B35/651

Abstract: The invention relates to the production of industrial ceramics and fire-resistant materials and can be used in the preparation of lightweight fire-resistant articles intended for use at temperatures of up to 1700 DEG C. The proposed charge for obtaining cordierite comprises the following components: 0.1-5.8 wt.% magnesium oxide, 0.3-14.8 % alumina, 49.4-53.4 % silica and 28.0-50.2 % alumino-magnesia spinel. The latter is obtained by one of two proposed methods from "fresh" saline or leached slags produced during the production of aluminium alloys. In one of the methods, alumino-magnesia spinel is obtained by roasting crushed slag containing 16-30 wt.% aluminium oxide, 2-15 % magnesium oxide, 30-70 % sodium and potassium chlorides, 2-15 % aluminium, 0.1-10 % silicon oxide, 2-8 % other additives; the roasting process involves heating the charge to 1450-1550 DEG C at a rate of 100-300 DEG C per hour and keeping it at the maximum temperature for between one and six hours. The second method involves the use of a leached slag comprising 20-50 wt.% alumium oxide, 3-20 % magnesium oxide, 5-25 % aluminium, 0.2-15 % silicon oxide and 5-20 % other additives. The slag is mixed with carbon powder (3-15 % by weight of the total mixture) and heated to 900-1200 DEG C until the initial mixture ignites. To increase the yield of alumino-magnesia spinel, the product can be subjected to further roasting at a temperature of 1400-1500 DEG C.

Abstract translation: 本发明涉及工业陶瓷和耐火材料的生产，并且可用于制备在高达1700℃的温度下使用的轻质耐火制品。所提出的获得堇青石的费用包括以下组分： 0.1-5.8重量％氧化镁，0.3-14.8％氧化铝，49.4-53.4％二氧化硅和28.0-50.2％铝 - 氧化镁尖晶石。 后者通过在生产铝合金期间产生的“新鲜”盐水或浸出的炉渣中的两种提出的方​​法之一获得。 在其中一种方法中，通过焙烧含有16-30重量％氧化铝，2-15％氧化镁，30-70％氯化钠和氯化钾，2-15％铝，0.1重量％的氧化铝的粉碎炉渣获得铝氧化镁尖晶石 10％氧化硅，2-8％其他添加剂; 焙烧过程包括以100-300℃/小时的速度将电荷加热至1450-1550℃，并将其保持在最高温度1至6小时之间。 第二种方法包括使用包含20-50重量％氧化铝，3-20％氧化镁，5-25％铝，0.2-15％氧化硅和5-20％其它添加剂的浸提炉渣。 炉渣与碳粉末（总混合物的3-15重量％）混合，加热至900-1200℃直到初始混合物点燃。 为了提高铝氧化镁尖晶石的产率，可以在1400-1500℃的温度下对该产品进行进一步的焙烧。