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Maintenance of Light Burned Magnesium Powder Protective Coatings

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Maintenance of Light Burned Magnesium Powder Protective Coatings

Date of release:2019-03-11 Author: Click:

Refractories have a great influence on the furnace type of heating furnace. The technological progress of refractories and the performance and quality of refractories not only affect the furnace type structure of heating furnace, but also affect the operation status, maintenance times and service life of heating furnace. Zhisheng Weihua High Temperature Coatings Engineer pointed out that the refractories used in heating furnace in China are ordinary clay brick, high alumina brick, ramming material, plastics, ordinary castable and high performance pouring, high temperature insulation coating, refractory cement, light insulation brick, heavy insulation brick, insulation felt, aluminium silicate cotton and other kiln refractories. These refractories have high temperature resistance, but high temperature oxidation friction loss. It is not easy to reform after operation. It needs long acid and alkali shutdown and large personnel loss during construction period. Now there are protective coatings for kiln lining, which have high refractory and temperature resistance, oxidation resistance atmosphere, and are applied on the surface of various refractories. They can protect the formed refractories well, prevent the normal loss of refractories such as oxidation, powdering, friction and corrosion. This is the protective coatings for ZS-1022 kiln lining, the high-temperature energy-saving coatings developed by Zhisheng Weihua Company for many years, and the protective coatings for ZS-1022 kiln lining. Material, high temperature resistance, heat shock resistance, high adhesion, good thermal insulation, anti-aging ability, easy construction and other characteristics, directly sprayed on the surface of various materials of kiln lining, including insulation bricks, castable materials, metals, ceramics, refractory fibers, quartz sand, silicon carbide, quartz glass, etc., to put a protective coat on the kiln lining, good protection of kiln lining materials, The lightly burned magnesia forms a high temperature, fire resistant and compact integrated coating, which greatly prolongs the use time of the lining material of the kiln and reduces the damage rate of the lining material of the kiln. The kiln lining protective coating is made of Zhishengweihua high temperature film forming solution, ceramic oxide, silicon carbide, rare earth oxide, ceramic fiber and other high temperature resistant inorganic materials after high speed dispersion. The parameters of protective coatings for kiln lining are as follows: 1. thermal conductivity 0.1W/m.K; 2. working temperature of protective coatings for energy-saving kiln lining guided by science and technology: <1800 C; 3. bulk density 1.8g/cm3; 4. thermal shock resistance of coatings is excellent, thermal shock resistance is excellent, coatings do not crack and fall off; 5. ZS-1022 kiln lining protective coatings have strong resistance to oxidation and corrosion at high temperature; 6. adhesion 1; 7. linear expansion coefficient 10 *1. 0-6/; 8. Flexural strength 1300 C, 260/Mpa; 9. Tensile endurance strength 1000 C, 1000H: 90/Mpa; 10. Elastic modulus 3.7 *105/Mpa;

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