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CN-122011825-A - Rare earth doped composite solid solution energy-saving coating and preparation method thereof

CN122011825ACN 122011825 ACN122011825 ACN 122011825ACN-122011825-A

Abstract

The invention relates to the technical field of industrial furnace coatings, in particular to a rare earth doped composite solid solution energy-saving coating and a preparation method thereof, wherein the rare earth doped composite solid solution energy-saving coating comprises, by weight, 100 parts of a powder base material, 0.1-1 part of a dispersing agent and 100-200 parts of a binder, the powder base material comprises, by weight, 60-80 parts of lanthanum cerium carbonate, 3-5 parts of cerium carbonate and 10-20 parts of neodymium iron boron waste residues, and the powder base material is prepared by mixing the lanthanum cerium carbonate, the neodymium iron boron waste residues and an auxiliary agent and then calcining at a high temperature. The invention provides a rare earth doped composite solid solution energy-saving coating, which is a novel energy-saving material applied to an industrial furnace, is sprayed on the surface of a refractory material of a high-temperature kiln to form a layer of hard ceramic glaze crust, and plays roles of protecting a furnace body, prolonging the service life of the kiln, reflecting infrared heat energy in the furnace and improving the combustion rate of the kiln.

Inventors

  • CAO JIANWEI
  • PAN LU
  • ZENG JIE
  • XIA MIN
  • Ding Renting
  • LIU YONGHONG
  • WANG JIPING
  • SUN XIANGYU
  • LIU SIYUAN
  • CHEN LIBING
  • ZHANG JUN
  • ZHANG WEI
  • HU SHANSHAN
  • Su Rigala

Assignees

  • 包头市安德稀耐新材料有限公司

Dates

Publication Date
20260512
Application Date
20260326

Claims (10)

  1. 1. The rare earth doped composite solid solution energy-saving coating is characterized by comprising, by weight, 100 parts of a powder base material, 0.1-1 part of a dispersing agent and 100-200 parts of a binder, wherein the powder base material comprises, by weight, 60-80 parts of lanthanum cerium carbonate, 3-5 parts of cerium carbonate and 10-20 parts of neodymium iron boron waste residues, and is prepared by mixing lanthanum cerium carbonate, neodymium iron boron waste residues and an auxiliary agent and then calcining at a high temperature.
  2. 2. The rare earth doped composite solid solution energy-saving coating according to claim 1, wherein the auxiliary agent comprises, by weight, 1-5 parts of manganese dioxide, 1-5 parts of copper oxide and 3-5 parts of zircon powder.
  3. 3. The rare earth doped composite solid solution energy saving coating according to claim 1, wherein the high temperature calcination condition is that the temperature is raised to 1180-1280 ℃ and the temperature is kept for 6-8 hours.
  4. 4. The rare earth doped composite solid solution energy saving coating according to claim 1, wherein the powder base material is calcined at high temperature, and further comprises the following powder base material morphology modification process: according to parts by weight, 100 parts of the high molecular dispersing agent and 0.1-1 part of the high molecular dispersing agent are stirred and dispersed uniformly, 150-250 parts of the powder base material obtained by high-temperature calcination is gradually added for grinding, and when the particle size of the powder in the suspension is smaller than 500nm, grinding is stopped, so that modified slurry is obtained; And (3) carrying out spray granulation on the modified slurry, and collecting microspheres, and carrying out high-temperature sintering to obtain the spherical powder base material.
  5. 5. The rare earth doped composite solid solution energy saving coating according to claim 4, wherein the pH value of the suspension is controlled to 8-10 during grinding, the inlet temperature of the granulator is controlled to 120 ℃ during spray granulation, the temperature of high temperature sintering is 1000 ℃ and the time is 3h.
  6. 6. The rare earth doped composite solid solution energy saving coating according to claim 4, wherein before the powder base material is subjected to morphology modification, the powder base material is crushed to a particle size D90 less than or equal to 10 μm, and the polymer dispersing agent is ammonium polyacrylate.
  7. 7. A method for preparing the rare earth doped composite solid solution energy saving paint as claimed in any one of claims 1 to 6, comprising the steps of: S1, mixing and stirring 30-70 parts of water and 0.1-1 part of dispersing agent uniformly according to weight fraction, then slowly adding 100 parts of powder base material, stirring and dispersing uniformly to obtain composite solid solution energy-saving slurry; and S2, adding 100-200 parts of binder into the composite solid solution energy-saving slurry in a stirring state, and uniformly stirring to obtain a rare earth doped composite solid solution energy-saving coating finished product.
  8. 8. The process according to claim 7, wherein in S1, the stirring speed is 300 to 500r/min and the stirring time is 5 to 15min during the mixing and stirring of the water and the dispersant.
  9. 9. The preparation method according to claim 7, wherein in S1, the stirring rotation speed is adjusted to 700-900r/min before the powder base material is added, and the stirring rotation speed is adjusted to 900-1100r/min after the base material is completely added, and the powder base material is dispersed at a high speed for 15-30min.
  10. 10. The preparation method of claim 7, wherein in S2, the composite solid solution energy-saving slurry is added into a high-speed dispersing machine and then stirred at a speed of 500-700r/min, the rotating speed is increased by 700-900r/min after the stirring is uniform, 100-200 parts of binder is slowly added, and the mixture is uniformly stirred to obtain the rare earth doped composite solid solution energy-saving coating product.

Description

Rare earth doped composite solid solution energy-saving coating and preparation method thereof Technical Field The invention belongs to the technical field of industrial furnace coatings, and particularly relates to a rare earth doped composite solid solution energy-saving coating and a preparation method thereof. Background The heat radiation performance and the heat preservation performance of the refractory materials of the furnace body determine the heat energy utilization efficiency of the kiln. The emissivity of the refractory material at normal temperature is generally 0.6-0.8, and the emissivity is reduced to 0.4-0.5 along with the rise of the furnace temperature, a large amount of heat is transmitted outwards through the furnace wall, the total temperature of internal materials is reduced, heat waste and cost are caused, the material temperature can not reach the set temperature, and the process fails. The infrared radiation energy-saving coating in the domestic market is mainly formed by mixing a plurality of metal and nonmetal materials, and has the defects of poor high-temperature stability, short service life, undefined energy-saving and consumption-reducing effects, high price and the like, so that the use ratio on a high-temperature kiln is lower. The high-energy industry has entered the key period of energy conservation, consumption reduction and carbon emission reduction, and the technical upgrading is of great importance to the survival and development of enterprises, and is also an important target for the industrial deepening reform in China. The infrared radiation energy-saving coating material with low price, good high temperature resistance, high infrared emissivity and obvious energy-saving and consumption-reducing effects is urgently needed in high-energy markets such as steel, cement, glass and ceramic, and the energy-saving high-temperature kiln which is improved and is to be built in the prior high-temperature kiln can release huge market demands and has broad market prospect. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a rare earth doped composite solid solution energy-saving coating which is a novel energy-saving material applied to an industrial furnace, and is sprayed on the surface of a refractory material of a high-temperature kiln to form a layer of hard ceramic glaze crust, thereby playing roles in protecting a furnace body, prolonging the service life of the kiln, reflecting infrared heat energy in the furnace and improving the combustion rate of the kiln. Compared with the existing energy-saving coating, the rare earth doped composite solid solution energy-saving coating has higher infrared normal total emissivity and high-temperature stability, improves the compactness and thermal shock resistance of the coating structure, and provides a feasible scheme for finishing the technical upgrading requirements of energy conservation, consumption reduction and carbon emission reduction in the traditional high-energy-consumption industry. Meanwhile, the problem of surplus lanthanum and cerium products is solved, and the development and market application of lanthanum and cerium functional materials and products have important significance. The rare earth doped composite solid solution energy-saving coating is prepared from, by weight, 100 parts of a powder base material, 0.1-1 part of a dispersing agent and 100-200 parts of a binder, wherein the powder base material comprises, by weight, 60-80 parts of lanthanum cerium carbonate, 3-5 parts of cerium carbonate and 10-20 parts of neodymium iron boron waste residues, and is prepared by mixing lanthanum cerium carbonate, neodymium iron boron waste residues and an auxiliary agent and calcining at a high temperature. As a further explanation of the invention, the auxiliary agent comprises, by weight, 1-5 parts of manganese dioxide, 1-5 parts of copper oxide and 3-5 parts of zircon powder. As a further explanation of the invention, the high-temperature calcination condition is that the temperature is raised to 1180-1280 ℃ and kept for 6-8 hours. The invention further discloses a method for preparing the spherical powder base material, which comprises the following steps of carrying out high-temperature calcination on the powder base material, and further comprises the following powder base material morphology modification process, namely, according to parts by weight, stirring and dispersing 100 parts of the powder base material and 0.1-1 part of a high-molecular dispersing agent uniformly, gradually adding 150-250 parts of the powder base material obtained through high-temperature calcination for grinding, stopping grinding when the particle size of the powder in suspension is smaller than 500nm, obtaining modified slurry, carrying out spray granulation on the modified slurry, and collecting microspheres, and carrying out high-temperature sintering, thus obtaining the spherical powder base m