Wide-temperature-range high-infrared-emissivity coating material and preparation method thereof

A high-emissivity, coating material technology, applied in the field of high-temperature furnace energy-saving coating materials, can solve the problems of poor strength of loose porous structures, low infrared emissivity, and easy slag removal on the surface.

Active Publication Date: 2015-09-16
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the infrared emissivity of alumina fiber refractories is low at high temperatures, and the utilizati...

Method used

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specific Embodiment approach

[0018] The infrared high emissivity coating material of wide temperature zone of the present invention, its preferred embodiment is:

[0019] Including wide temperature zone infrared high emissivity powder and adhesive mixed according to the weight ratio of 1:1-1:2.5;

[0020] The wide temperature range high emissivity powder includes the following raw materials prepared by weight percentage:

[0021] Iron ore slag-based high emissivity powder material: 5-30%, ferroaluminum spinel: 25-50%, magnetite: 0-15%; zirconia: 0-20%, cerium oxide: 20-40 %, molybdenum silicide: 0-15%;

[0022] The adhesive is alumina sol.

[0023] The iron ore slag-based high-emissivity powder material comprises the following ingredients prepared by weight percentage:

[0024] Iron slag: 45-65%, iron oxide: 0-10%, manganese oxide: 5-15%, zirconia: 5-20%, chromium oxide: 5-15%, silicon carbide: 0-10%.

[0025] The main components of the iron slag include:

[0026] 70-90% silicon dioxide, 5-10% iron o...

specific Embodiment

[0039] Step 1: Prepare iron ore slag-based high-emissivity powder materials

[0040] 1. Weighing raw materials: iron slag: 27.5kg, iron oxide: 5kg, manganese oxide: 5kg, zirconia: 5kg, chromium oxide: 5kg, silicon carbide: 2.5kg;

[0041] 2. Add the above-mentioned raw materials into a ball mill for 4 hours, mix them evenly, and heat-treat the powder material after ball milling at a high temperature of 1100°C for 10 hours to obtain an iron ore slag-based high-emissivity powder material for use;

[0042] Step 2: Prepare wide temperature range infrared high emissivity material

[0043] Weighing raw materials: iron ore slag-based high emissivity powder material: 7.5kg, iron-aluminum spinel: 20kg, magnetite: 2.5kg, zirconia: 2.5kg, cerium oxide: 15.5kg, molybdenum silicide: 2kg;

[0044] Add the above raw materials into a ball mill for 4 hours, mix them evenly, and heat-treat the powder material after ball milling at a high temperature of 1500°C for 10 hours to obtain a coarse po...

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Abstract

The invention discloses a wide-temperature-range high-infrared-emissivity coating material and a preparation method thereof. The wide-temperature-range high-infrared-emissivity coating material is prepared by mixing wide-temperature-range high-infrared-emissivity powder and an adhesive in a weight ratio of 1:1-1:2.5. The wide-temperature-range high-infrared-emissivity powder is prepared from the following raw materials in percentage by weight: 5-30% of iron-ore-slag-base high-emissivity powder material, 25-50% of hercynite, 0-15% of magnetite, 0-20% of zirconium oxide, 20-40% of cerium oxide and 0-15% of molybdenum silicide. The adhesive is aluminum oxide sol. The wide-temperature-range high-infrared-emissivity coating material can be used on an aluminum oxide fiber refractory material surface, can be used at higher temperature, and has the high-infrared-emissivity energy-saving function and the surface reinforcement function.

Description

technical field [0001] The invention relates to an energy-saving coating material for a high-temperature furnace, in particular to an infrared high-emissivity coating material with a wide temperature range and a preparation method thereof. Background technique [0002] High-temperature kilns are widely used in various fields of national production and scientific research. They are high-energy-consuming industrial products and account for a large share of total energy consumption. In particular, the thermal energy utilization rate of most industrial high-temperature furnaces is generally low, and there is a lot of room for energy saving. Coating the inner wall of a high-temperature furnace with high-emissivity materials is an effective way to achieve energy saving. High-emissivity coatings can not only increase the emissivity of the inner wall of the furnace, improve the distribution of heat rays in the furnace, increase the utilization of secondary emission heat energy, and ...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B41/87
Inventor 郭帅陶兴东戴建明
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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