Low-alkalinity crystallizer covering slag prepared from building waste clay
A technology for mold mold powder and construction waste is applied in the field of low alkalinity mold mold mold powder, which can solve the problems of crushing, affecting the uniformity and integrity of mold powder particles, and achieve the effects of reducing production costs, saving costs, and simple processing.
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Embodiment 1
[0016] Low-alkalinity crystallizer mold slag using construction waste clay as raw material, the mass percentage of its raw material components is: clay 35%, fluorite 13%, limestone 24%, sodium carbonate 8%, magnesium oxide 3%, carbon Black 2%, graphite 14%, binder 1%. Mold flux chemical composition: CaO 28.9%, SiO 2 33.6%, Na 2 O 4.82%, F - 8.68%, MgO 2.8%, Al 2 o 3 4.12%, Fe 2 o 3 0.93%, solid carbon C 15.5%. Mold flux physical properties: basicity (CaO / SiO 2 ) 0.86, melting point 1060°C, viscosity (1300°C) 0.39Pa·S, melting speed 36 seconds, moisture ≤0.3%.
Embodiment 2
[0018] Low-alkalinity crystallizer mold slag using construction waste clay as raw material, the mass percentage of its raw material components is: clay 48%, fluorite 9%, limestone 17%, sodium carbonate 11%, magnesium oxide 1%, carbon Black 3%, graphite 10%, binder 1%. Mold flux chemical composition: CaO 25.9%, SiO 2 30.6%, Na 2 O 5.8%, F - 8.2%,MgO 2.5%,Al 2 o 3 4.62%, Fe 2 o 3 0.93%, solid carbon C 17.8%. Mold flux physical properties: basicity (CaO / SiO 2 ) 0.85, melting point 1030°C, viscosity (1300°C) 0.48Pa·S, melting speed 42 seconds, moisture ≤0.3%.
Embodiment 3
[0020] The low-alkalinity crystallizer mold slag using construction waste clay as raw material has the following raw material components: 40% clay, 11% fluorite, 20% limestone, 11% sodium carbonate, 2% magnesium oxide, carbon 4% black, 10% graphite, 2% binder. A low-alkalinity crystallizer mold slag using construction waste clay as raw material, the mass percentage of the main chemical components is as follows: The main chemical components of the low-alkalinity mold slag are CaO 27%, SiO 2 28%, MgO 2%, Al 2 o 3 5%, Na 2 O 8%, F - 7%, Fe 2 o 3 2%, solid carbon C 12%. Mold flux physical properties: basicity (CaO / SiO 2 ) 0.96, melting point 1030°C, viscosity (1300°C) 0.48Pa·S, melting speed 42 seconds, moisture ≤0.3%.
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