Slag-corrosion-resistant lightweight alumina clinker and preparation method thereof

[0023] A slag corrosion-resistant lightweight alumina clinker and a preparation method thereof. The preparation method of this embodiment is:

[0024] Using 89wt% bauxite raw meal micropowder, 7wt% carbon black and 4wt% plant ash as raw materials; first mix the raw materials uniformly in a planetary ball mill, and then machine press them under 200MPa to obtain a green body; then The green body was dried at 200°C for 12 hours, and kept at 1550°C under the condition of carbon embedding for 8 hours to obtain slag corrosion-resistant lightweight bauxite clinker.

[0025] The slag corrosion-resistant lightweight bauxite clinker prepared in this example is tested: the bulk density is 2.71g / cm 3 ; The average pore diameter is 495nm; the erosion index of the anti-slag test of 1600 ℃ immersion method is 5%, and the permeability index is 15%.

[0027] A slag corrosion-resistant lightweight alumina clinker and a preparation method thereof. The preparation method of this embodiment is:

[0028] Using 90wt% bauxite raw meal powder, 9wt% carbon black and 1wt% plant ash as raw materials; firstly mix the raw materials uniformly in a planetary ball mill, and then machine press them under the condition of 160MPa to obtain a green body; then The green body was dried at 160°C for 24 hours, and kept at 1650°C under the condition of carbon embedding for 6 hours to obtain slag corrosion-resistant lightweight bauxite clinker.

[0029] The slag corrosion-resistant lightweight bauxite clinker prepared in this example is tested: the bulk density is 2.84g / cm 3 ; The average pore size is 426nm; the erosion index of the anti-slag test by immersion method at 1600°C is 5%, and the permeability index is 14%.

[0031] A slag corrosion-resistant lightweight alumina clinker and a preparation method thereof. The preparation method of this embodiment is:

[0032] Using 94wt% bauxite raw meal micropowder, 4wt% carbon black and 2wt% plant ash as raw materials; first mix the raw materials uniformly in a planetary ball mill, and then machine press them under the condition of 150MPa to obtain a green body; then The green body was dried at 150°C for 18 hours, and kept at 1600°C under the condition of carbon embedding for 5 hours to obtain slag corrosion-resistant lightweight bauxite clinker.

[0033] The slag corrosion-resistant lightweight bauxite clinker prepared in this example is tested: the bulk density is 2.94g / cm 3 ; Average pore size is 316nm; 1600 ℃ immersion method slag resistance test erosion index is 3%, permeability index is 12%.