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High temperature thermal insulation material for tank number of torpedo cars

A torpedo tank car and heat insulation material technology, applied in the field of heat insulation materials, can solve the problems of difficult promotion, monopoly, high manufacturing cost, etc., achieve the effects of wide application range, maintain passability, improve surface quality and overall strength

Active Publication Date: 2015-06-03
HANGZHOU QIANJIANG WEIGHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The currently known and commonly used heat-resistant materials are WDS series heat-insulation materials manufactured by Berksen Company in Germany. They are currently nano-scale microporous heat-insulation materials with better performance, but their manufacturing costs are high and they are monopolized by foreign companies. Promote domestically;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] First prepare the heat insulation layer: use the sol-gel method to prepare nano-silica airgel, use industrial-grade water glass as the silicon source, and the prepared nano-silica airgel has a particle size of 10nm and a porosity of more than 99.92%. , mix 30% (weight percentage, the same below) nano-silica airgel with 20% fibrous alkali-free ultrafine glass, 5% quartz fiber, and 5% polycrystalline mullite fiber, and stir Disperse it evenly with a mixer, and the stirring speed is 700r / min when dispersing; add a small amount of water and continue stirring for 1 minute, then add 3% citric acid and 4% gypsum to obtain a mixture. Continue to stir the mixture to form a slurry mixture and solidify to obtain a fine and stable foam. Put it into a drying oven and dry it at 150-250°C for 20 minutes. Take out the dried solid, crush it with a pulverizer, and pass 400 Mesh sieve, then add 10% ceramics, 5% aluminum oxide airgel, 3% hydrophobic agent, 5% alumina and 10% potassium hexa...

Embodiment 2

[0052] The same method as in Example 1 was used to prepare nano-high temperature insulation materials; the raw materials added and their weight percentages were as follows: 40% of nano-silica airgel; 20% of high-silica glass fiber; 10% of quartz fiber; polycrystalline molybdenum 5% stone fiber; 10% ceramics; 1% aluminum oxide airgel; 1% hydrophobic agent; 2% silicon carbide; 5% alumina; 3% sodium tripolyphosphate; 3% gypsum; the resulting material thermal conductivity Rate is 0.012w / m.K, density is 0.40g / cm 3 , the compressive strength is greater than 1Mpa, and the volume shrinkage rate at 1000°C is 2.72%.

Embodiment 3

[0054] The same method as in Example 1 was used to prepare nano-high temperature insulation materials; the raw materials added and their weight percentages were as follows: 40% of nano-silica airgel; 25% of high-silica glass fiber; 10% of quartz fiber; polycrystalline molybdenum 1% stone fiber; 10% ceramic; 5% zirconium silicate; 4% sodium tripolyphosphate; 5% gypsum; the thermal conductivity of the obtained material is 0.009w / m. 3, the compressive strength is greater than 0.85Mpa, and the volume shrinkage rate at 1000°C is 4.23%.

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PUM

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Abstract

The invention relates to a thermal insulation material, and specially relates to a thermal insulation material of torpedo cars for iron and steel smelting. The invention provides a high temperature thermal insulation material for tank number of torpedo cars. The high temperature thermal insulation material comprises a nano thermal insulation layer and a strengthened layer, wherein the thermal insulation material mainly comprises the following raw materials: nano silica aerogels; fibrous alkali-free superfine glass or high silica glass fiber; quartz fiber; polycrystalline mullite fiber; ceramics; aluminium oxide aerogels; hydrophobic agent; one or more of potassium hexatitanate whiskers, silicon carbide, zirconium silicate and aluminum silicate; alumina; citric acid or sodium tripolyphosphate and gypsum; and the strengthened layer is formed by reinforced resin and fiber cloth. The nano high temperature thermal insulation material prepared according to the invention has excellent thermal insulation performance, higher strength and higher integrality, is polyporous, and can keep passing ability of electronic signals to the greatest extent without shielding.

Description

technical field [0001] The application relates to a heat insulating material, in particular to a high temperature heat insulating material used for steel smelting torpedo tanker tank numbers. Background technique [0002] In the field of metallurgy, blast furnace molten iron needs to be transported to the converter for steelmaking through the transportation operation system, which mainly includes the following steps: tapping molten iron from the blast furnace—receiving molten iron in the torpedo tank—>transporting the torpedo tank to steelmaking—>pouring into the ladle for desulfurization—>according to the amount Poured into converter steelmaking, the energy loss caused by the process of pouring cans is very large. Combining the torpedo tank and the ladle into one is currently an effective means to solve this problem; in this process, it is necessary to set identification marks on the tank body to facilitate the control and production personnel to identify the corre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/24C04B14/42C04B14/38
Inventor 顾佳捷王燕勇戴明新
Owner HANGZHOU QIANJIANG WEIGHING TECH
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