摘要:
An alumina-spinel monolithic refractory consists essentially of 50-90 percent by weight of alumina clinker, 5-40 percent by weight of MgO--Al.sub.2 O.sub.3 spinel clinker not larger than 1 mm in size and 1-25 percent by weight of alumina cement. Another alumina-spinel monolithic refractory consists essentially of 50-90 percent by weight of alumina clinker, 5-40 percent by weight of MgO--Al.sub.2 O.sub.3 spinel clinker, 1-25 percent by weight of alumina cement and not more than 5 percent by weight of magnesia clinker. The alumina-spinel monolithic refractories are used for lining the inner walls of ladles, vacuum degassing vessels, hot-metal mixers, blast-furnace troughs and their covers, not-metal mixer cars, tundishes and the like.
摘要翻译:氧化铝 - 尖晶石整体耐火材料基本上由50-90重量%的氧化铝熟料,5-40重量%的尺寸不大于1mm的MgO-Al 2 O 3尖晶石熟料和1-25重量%的氧化铝水泥组成。 另一种氧化铝 - 尖晶石整体耐火材料主要由50-90重量%的氧化铝熟料,5-40重量%的MgO-Al 2 O 3尖晶石熟料,1-25重量%的氧化铝水泥和不超过5重量% 的镁砂熟料。 氧化铝 - 尖晶石不定形耐火材料用于衬垫钢包的内壁,真空脱气容器,热金属搅拌机,高炉槽及其盖,非金属搅拌车,中间包等。
摘要:
The refractory material lined inside a ladle, tandish or other container or sluice, etc. for molten metal can be dried by dielectric heating using microwave. In this case, a space surrounded by a metallic frame and a metallic cover plate can be used as a cavity resonator. If a hot blast is concurrently supplied inside the space, the time for drying can be made shorter.
摘要:
A method for sintering refractories comprising adding 0.05 to 10% by weight of an electro-conductive particles to a group of dielectric refractory particles to obtain a mixture thereof, and heating the mixture by means of microwave induction heating to sinter the refractions.
摘要:
A method and apparatus for repairing lining which comprises transmitting microwaves modulated by an antenna inserted into the vessel to the surface of the heated refractory lining in the refractory lined vessel, detecting the reflected waves, detecting the difference between the reference surface of the refractory lining and the damaged surface from the phase difference of the microwaves, controlling the transfer of the refractory gunning nozzle inserted into the vessel with the use of the deviation signal, and making the lining repair in the hot atmosphere.