Method for preparing middle ladle dry vabrative material

A vibrating material and vibrating forming technology, applied in the field of preparation of dry vibrating material in tundish, can solve the problems of carbon increase, environmental pollution, irritation, etc., and achieve the effects of good corrosion resistance, environmental friendliness and easy disassembly

Inactive Publication Date: 2006-08-23
WUHAN UNIV OF SCI & TECH
5 Cites 27 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, the carbon and hydrogen after carbonization of the binder phenolic resin of this kind of dry material will obviously add carbon and hydrogen to the molten steel, and the phenolic resin and phosphate, chlorate, sulfate, etc. will vola...
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Abstract

The present invention relates to the preparation process of dry vibrating material for middle ladle. The dry vibrating material is prepared with magnesite or forsterite in 85-97 wt% and sodium metasilicate in 3-15 wt%, and through mixing, vibration forming, stoving at 100-400 deg.c and demolding. The magnesite or forsterite is graded with 0.088-2 mm components in 80-90 wt% and 0.088 mm below components in 10-20 wt%. The present invention adopts non-toxic, smell-less and harmless sodium metasilicate as bonder, so that the dry vibrating material may be low temperature smelted during the stoving process to polymerize constantly to raise strength. The dry vibrating material has no carbon increment to the molten steel, high corrosion resistance, easy degradation and environment friendship.

Technology Topic

CorrosionMagnesite +4

Examples

  • Experimental program(1)

Example Embodiment

[0008] [Example] 1 A method for preparing dry vibrating material in a 28-ton tundish for continuous casting
[0009] Calculated by weight percentage: sintered magnesia containing 97% MgO is 90%, and sodium metasilicate is 10%. The weight percentage content of the particle gradation of sintered magnesia is: 1~0.088mm is 80~85%, and <0.088mm is 15~20%. The above-mentioned raw materials are mixed, after being evenly stirred, the fetal membrane is vibrated and molded, baked at 110-300°C, and demolded to obtain the tundish lining.
[0010] Actual measurement index: MgO is 89.4%, SiO 2 6.2%; volume density: 110℃×24h 2.18g/cm 3; Compressive strength: 110℃×24h3.6MPa, 1500℃×3h 7.3MPa after firing; linear change rate: 1500℃×3h after firing -1.2%. This kind of material is used on 28 tons of continuous casting tundish, and the service life can reach more than 26 furnaces.
[0011] The characteristics of this embodiment are: ① simple construction; ② fast baking without cracking or peeling, short baking time and no smell; ③ good corrosion resistance and long service life; ④ no carbon and hydrogen increase Phenomenon, so it will not pollute the molten steel; ⑤The disassembly performance is good, and it can realize automatic turning over.
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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

  • Good corrosion resistance
  • Easy to disassemble
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