RH chromium-free gunning material and preparation method thereof
The technology of gunning material and fused magnesia is applied in the field of RH chromium-free gunning material and its preparation, which can solve the problems of environmental pollution, induced gene mutation, damage, etc., and achieve the effects of good permeability resistance and simple production method.
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[0042] The preparation method of RH chrome-free gunning material of the present invention, according to raw material ratio, first takes nanometer ZrO 2, sodium hexametaphosphate, boric acid, silicon micropowder, and aluminum dihydrogen phosphate are mixed, stirred and evenly mixed to obtain a standby mixed material;
[0043] Weigh the coarse particles of fused magnesia, the fine particles of fused magnesia, and the fine powder of fused magnesia, mix them, and stir to obtain the magnesia material;
[0044] Mix the spare mixed material with the magnesia material, add carboxymethyl cellulose, stir and mix evenly, and obtain the RH chrome-free gunning material.
[0045] The RH chromium-free gunning material of the present invention adopts the current wet gunning technology, and the amount of water added is controlled at about 15 to 25 wt% of the RH chromium-free gunning material for gunning operation.
Embodiment 1
[0047] The preparation of embodiment 1RH chrome-free gunning material
[0048] First, according to 5 parts by weight of nano zirconium dioxide, 2 parts by weight of sodium hexametaphosphate, 1 part by weight of boric acid, 2 parts by weight of silicon micropowder, and 2 parts by weight of aluminum dihydrogen phosphate, carry out batching, and then stir in a stirring device for 15 minutes to mix evenly. Obtain the spare mixture;
[0049] Then weigh 43 parts by weight of fused magnesia coarse particles, 15 parts by weight of fused magnesia fine particles, and 30 parts by weight of fused magnesia fine powder, stir in another stirring device for 10 minutes and mix evenly to obtain magnesia materials;
[0050] Pour the spare mixed material into the magnesia material, add 0.05 parts by weight of carboxymethyl cellulose, stir for 15 minutes and mix well to obtain the product.
Embodiment 2
[0051] The preparation of embodiment 2RH chrome-free gunning material
[0052] First, according to 7 parts by weight of nano zirconium dioxide, 2 parts by weight of sodium hexametaphosphate, 2 parts by weight of boric acid, 4 parts by weight of silicon micropowder, and 3 parts by weight of aluminum dihydrogen phosphate, carry out batching, and then stir in a stirring device for 17 minutes to mix evenly. Obtain the spare mixture;
[0053] Then weigh 42 parts by weight of fused magnesia coarse particles, 15 parts by weight of fused magnesia fine particles, and 25 parts by weight of fused magnesia fine powder, stir in another stirring device for 15 minutes and mix evenly to obtain magnesia materials;
[0054] Pour the spare mixed material into the magnesia material, add 0.07 parts by weight of carboxymethyl cellulose, stir for 20 minutes and mix well to obtain the product.
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