Preparation method of low-zirconium mullite cast steel brick
A technology of zirconium mullite and fused mullite, which is applied in the field of preparation of low zirconium mullite cast steel bricks, can solve the problems of shortening the service life of the nuclear power industry, easy generation of inclusions in refractory materials, and reducing the purity of large steel ingots, etc. problems, to achieve good thermal shock stability, non-oxidative high-temperature chemical properties, and high softening temperature under load
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Embodiment 1
[0025] A method for preparing low-zircon mullite cast steel bricks, comprising the following contents:
[0026] a. By weight, 50 parts of fused mullite; 20 parts of zirconia; 20 parts of andalusite; 3 parts of kyanite are mixed and pulverized or mixed in proportion after pulverized to obtain mixed particles; The mixed particles are, by weight percentage, particles with a particle size of 200 mesh accounting for 56%, particles with a particle size of 1-3mm accounting for 34%, and particles with a particle size of 3-5mm accounting for 10%;
[0027] b. Grinding Guangxi white clay and lignin into 200 mesh fine powder respectively;
[0028] c. 93 parts of mixed particles obtained in step a, 5 parts of Guangxi white mud fine powder obtained in step b, and 2 parts of lignin are mixed in proportion, and the lignin is 1.22 ~ 1.25g / cm2 in density. 3 The mode of lignin aqueous solution is mixed, obtains mixed raw material;
[0029] d. pressing the mixed raw materials i...
Embodiment 2
[0034] A method for preparing low-zircon mullite cast steel bricks, comprising the following contents:
[0035] a. By weight, 50 parts of fused mullite; 20 parts of zirconia; 20 parts of andalusite; 3 parts of kyanite are mixed and pulverized or mixed in proportion after pulverized to obtain mixed particles; The mixed particles are, by weight percentage, particles with a particle size of 200 mesh accounting for 60%, particles with a particle size of 1-3mm accounting for 30%, and particles with a particle size of 3-5mm accounting for 10%;
[0036] b. Grinding Guangxi white clay and lignin into 200 mesh fine powder respectively;
[0037] c. 93 parts of mixed particles obtained in step a, 5 parts of Guangxi white mud fine powder obtained in step b, and 2 parts of lignin are mixed in proportion, and the lignin is 1.22 ~ 1.25g / cm2 in density. 3 The mode of lignin aqueous solution is mixed, obtains mixed raw material;
[0038] d. pressing the mixed raw materials...
Embodiment 3
[0043] A method for preparing low-zircon mullite cast steel bricks, comprising the following contents:
[0044] a. By weight, 50 parts of fused mullite; 20 parts of zirconia; 20 parts of andalusite; 3 parts of kyanite are mixed and pulverized or mixed in proportion after pulverized to obtain mixed particles; The mixed particles are, by weight percentage, particles with a particle size of 200 mesh accounting for 50%, particles with a particle size of 1-3mm accounting for 40%, and particles with a particle size of 3-5mm accounting for 10%;
[0045] b. Grinding Guangxi white clay and lignin into 200 mesh fine powder respectively;
[0046] c. 93 parts of mixed particles obtained in step a, 5 parts of Guangxi white mud fine powder obtained in step b, and 2 parts of lignin are mixed in proportion, and the lignin is 1.22 ~ 1.25g / cm2 in density. 3 The mode of lignin aqueous solution is mixed, obtains mixed raw material;
[0047] d. pressing the mixed raw material...
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