Research On The Character Of Aluminum-silica Fiber And The Property Of Alumina-silica Fiber Paper

Aluminosilicate fiber is lightweight refractory material. It has excellent performance of traditional insulation materials and refractory fibrous, its products covered a variety of areas, and used widely in industrial sector. Aluminosilicate fiber produces can improve thermal devices performance in the industrial furnace or heating devices, in order to achieve the structure light and energy-saving of technical materials. This thesis research on the fundamental characteristic of aluminum silicate fiber, and discuss to remove slag ball form aluminosilicate fibers. In connection with the existing problems of aluminosilicate fiber paper, putting forward the corresponding solutions to these problems, and talking about aluminum silicate fiber as papermaking packing in papermaking, in preparation for success test refractory insulation board used aluminum silicate fiber in the factory.Firstly, study on the physical and chemical properties of aluminum silicate fiber and slag ball effect on the performance of aluminum silicate fiber paper and its thermal properties, experiment showed that the length of aluminum silicate fibers is range form 1406 to 2465 micrometer, the potential of aluminum silicate fibers were -27millivolt, the pH of solution was between eight and nine. Aluminum silicate fiber resistant acid and alkaline, and resistant corrosion and have chemical stability strongly. Aluminum silicate fiber as packing, adding to less than 10%, can achieve the required index basically strength and intensity. Adding aluminum silicate fiber volume as 70% into the paper, thermal conductivity increase when the temperature rise and thermal conductivity rate of 0.167 W/m·K at 300 degrees, this paper can be used as functional paper, the appearance of paper flatted with the dispersant agent of anion polyacrylamide.Secondly, for the aluminum silicate fiber slag problems, using BK3300 high power microscope to take measured the particle size of slag ball. And then deal with these dates, the diameter of slag pellets mainly in the 53μm residue, the probability of normal distribution in the 53μm Department up to 80%, a frequency of 57%, Slag ball content on the paper effect on the tensile strength, tear index, evenness and thermal conductivity, when the shot content of lowing 5 percent, the tensile index was not changed significantly, while the tear index but a higher degree of reduced; slag ball content from 3% to 5%, the evenness index from 151% to 103%, reducing about 31%Thirdly, for, the problem of low intensity of the ceramic fiber paper, added plant fiber, adhesive, and fiber modification to increase the strength of paper sheet, using the method of orthogonal discussed the best content of the three-factor, the three factor included plant fiber, adhesive and beating degree of plant fiber. The results of experiment showed that the addition of plant fiber amount than the amount of adhesive and the beating degree of plant fiber, the optimum conditions for the beating degree of plant fiber as 47 o SR, the amount of plant is 60%, the amount of adhesive is 30%. After optimization, the consumption of plant fiber can be reduced to 30%. Aluminum silicate fibers with surface treatment can improve the strength properties of paper by acid and alkali, but the results are not very obviousFinally, using high-temperature adhesives made by laboratory, glue concentration of 10%, cycle time was 28 hour, successfully obtained ceramic fiber board, the board can be used in the temperature of lowing 1200 degree, the bulk density of cardboard was range form 285 kg/m~3 to 290 kg/m~3, at this time, thermal conductivity was 0.079 W/M·K under the temperature of 800 degree.