Vacuum granulation method for refractory materials

一种真空造粒、耐火材料的技术，应用在化学仪器和方法、黏土制备装置、黏土加工设备等方向，能够解决易产生裂纹、偏晰、变形等问题，达到质量提高、较易控制、物料成本下降的效果

Inactive Publication Date: 2006-09-06
MAANSHAN YIJIANG REFRACTORY CERAMICS MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the requirements of high temperature resistance, thermal shock resistance, strength, and corrosion resistance of refractory materials, the particle size of the finished material is very high in product production, and the commonly used granulation methods are likely to cause particle size, uniformity, etc. The requirements are difficult to grasp. Due to the inconsistent particle size and uniformity, it is easy to produce cracks, partial clarity, deformation and other defects in the subsequent processing and use, which will reduce the quality of the product or increase the hazard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The material first enters the tank body 3 of the batching device. Driven by the motor 7, the transmission device 1 and the transmission system 5 drive the mixing paddle 2 and the stirring shovel 4 to rotate. The wing-shaped mixing paddle 2 and the vertical stirring shovel 4 act as a circular motion with frequency conversion and speed regulation, so that the materials are subjected to horizontal and vertical shear forces and tumbling, showing a swirling state of peaks and valleys. These materials are in the tank body 3 Make all-round relative movement in the middle, so as to achieve more uniform materials; the set granulation conditions are: time: 1000 seconds, temperature: 50 degrees Celsius, after reaching the above conditions, the vacuum valve 6 is opened, and the pressure is adjusted -0.06--0.08 Mpa; mixing paddle and stirring shovel to granulate again with variable speed, and extract the gas in the mixed material to further increase the density of the material, reduc...

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PUM

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Abstract

The invention discloses a high-temperature fire-proof material granulating method, which is characterized in that: first the material enters the material distributor, to be forced by three horizontal wing-shape mixing lodicules and vertical mixing shovel to make frequency variable speed-adjustable circle motion, therefore, the material can writhe by the shearing forces in horizontal and vertical directions to attain uniform material; wherein, the set granulating condition comprises: time: 800-1000s; temperature: 40-50Deg. C; and when reaching said condition, opening the vacuum valve, to adjust the pressure in -0.06-0.08MPa, and the mixing lodicules and shovel granulate in variable speed again, and vacuuming the gas of mixed material to improve the density more, reduce the hole rate and improve eth size and uniformity of particles.

Description

technical field [0001] The invention discloses a high-temperature refractory material granulation molding method. Background technique [0002] Refractory products are generally used in high-temperature environments above 1580°C, and their products must maintain normal work in this high-temperature environment. Since most refractory raw materials are made of various powders and ultrafine powders plus binders and sintered in proportion, the powders are processed into Particles of a certain shape and size have a great influence on the quality of finished products, so the granulation method has become an important factor affecting the quality of refractory products. At present, mixing granulation equipment is basically used in China for granulation processing. The general equipment is a mixing granulator. The basic processing method is: mix the raw materials in proportion and put them into the batching device, add a binder, and rotate through the device. Stir and mix the mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C1/16B28C1/18B28C1/22
Inventor 余斌夏发业
Owner MAANSHAN YIJIANG REFRACTORY CERAMICS MFG CO LTD
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