Copper mine tailing slag porous ceramic material and preparation method thereof
A technology for porous ceramics and tailing slag, which is applied in the field of copper mine tailings slag porous ceramic materials and preparation to achieve the effects of enhancing compressive strength, large utilization and high porosity
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[0031] Example 1
[0032] Example 1 Copper ore flotation tailings were used as raw materials, and kaolin was used as a binder. The tailings of the copper mine were taken from the tailings dam of the Dexing Copper Mine, and XRF analysis was performed on it. The results are shown in Table 1:
[0033] Table 1
[0034]
[0035]
[0036] Take 100 parts of beneficiation tailings, 30 parts of carbon powder, 20 parts of kaolin, and 3 parts of feldspar from Dexing Copper Mine, mix them evenly, put them into a steel mold, press for 3 minutes under the pressure of 8MPa, take out the green body, and air dry it naturally. , put it into a high-temperature electric furnace, raise the temperature from room temperature to 1100°C at a heating rate of 5°C / min, keep sintered for 1 hour, and take out after cooling to obtain porous ceramics. The apparent porosity of porous ceramics is 41.07%, the water absorption rate is 30.68%, and the bulk density is 1.78g / cm 3 , the compressive strengt...
Example Embodiment
[0037] Example 2 Copper ore flotation tailings were used as raw materials (same as Example 1), and sodium lignosulfonate was used as a binder.
[0038] Take 100 parts of beneficiation tailings from Dexing Copper Mine, 30 parts of carbon powder, 3 parts of feldspar, and 15 parts of sodium lignosulfonate, mix them evenly, put them into a steel mold, press for 3 minutes under the pressure of 8MPa, and take out the green body , after natural air-drying, put it into a high-temperature electric furnace, raise the temperature from room temperature to 1100°C at a rate of 5°C / min, keep sintered for 1 hour, and take out after cooling to obtain porous ceramics. The apparent porosity of porous ceramics is 56.93%, the water absorption rate is 52.78%, and the bulk density is 1.09g / cm 3 , the compressive strength is 15.8MPa, the acid resistance is 98.87%, and the alkali resistance is 99.13%. It can be found that the compressive strength and porosity of porous ceramic filter balls are greatl...
Example Embodiment
[0039] Example 3 Copper ore flotation tailings were used as raw materials (same as Example 1), and water glass was used as a binder.
[0040]Take 100 parts of beneficiation tailings from Dexing Copper Mine, 30 parts of carbon powder, 5 parts of serpentine, and 25 parts of water glass, mix them evenly, put them into a steel mold, press under the pressure of 10MPa for 3 minutes, take out the green body, naturally After air-drying, it was put into a high-temperature electric furnace, raised from room temperature to 1080°C at a heating rate of 3°C / min, kept sintered for 80 minutes, and taken out after cooling to obtain porous ceramics. The apparent porosity of porous ceramics is 39.76%, the water absorption rate is 28.01%, and the bulk density is 1.91g / cm 3 , the compressive strength is 1.48MPa, the acid resistance is 98.65%, and the alkali resistance is 98.27%.
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