Rod-shaped aggregate for lightweight castable and preparation method thereof
A lightweight castable, rod-shaped technology, applied in the field of refractory materials, can solve the problems of inability to prepare small-sized aggregate lightweight castables, time-consuming, large water demand, etc., achieve excellent volume stability and thermal shock stability, reduce Production cost, the effect of improving production efficiency
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Embodiment 1
[0037] A rod-shaped aggregate for lightweight castables, which is prepared from the following raw materials in weight percentages:
[0038] Guangxi white clay with particle size ≤45μm: 75%
[0039] Alumina cement: 10%
[0040] Water glass: 10%
[0041] Calcium lignosulfonate: 5%
[0042]Add 0.2% of hydroxymethyl cellulose and 0.5% of sodium hexametaphosphate accounting for the total weight of the above raw materials.
[0043] The preparation method of the rod-shaped aggregate comprises the following steps:
[0044] (1) Prepare raw materials as required: 75% of Guangxi white mud with a particle size of ≤45 μm, 10% of alumina cement, 10% of water glass, 5% of calcium lignosulfonate; and sodium hydroxymethyl cellulose and sodium hexametaphosphate;
[0045] (2) The raw materials prepared in step (1) are added to the planetary mixer according to the required percentage of dosage and mixed, and stirred evenly to obtain the mixture;
[0046] (3) adding water accounting for 10% o...
Embodiment 2
[0051] A rod-shaped aggregate for lightweight castables, which is prepared from the following raw materials in weight percentages:
[0052] Guangxi white clay with particle size ≤45μm: 95%
[0053] Water glass: 3%
[0054] Calcium lignosulfonate: 2%
[0055] Add 0.2% sodium tripolyphosphate accounting for the total weight of the above raw materials, sodium hexametaphosphate accounting for 0.4% of the total weight of the above raw materials, and FDN accounting for 0.2% of the above raw materials.
[0056] The preparation method of the rod-shaped aggregate comprises the following steps:
[0057] (1) Prepare raw materials as required: 95% of Guangxi white mud with a particle size of ≤45 μm, 3% of water glass, 2% of calcium lignosulfonate; and sodium tripolyphosphate, sodium hexametaphosphate and FDN;
[0058] (2) The raw materials prepared in step (1) are added to the planetary mixer according to the required percentage of dosage and mixed, and stirred evenly to obtain the mix...
Embodiment 3
[0064] A rod-shaped aggregate for lightweight castables, which is prepared from the following raw materials in weight percentages:
[0065] Guangxi white clay with particle size ≤45μm: 85%
[0066] Water glass: 10%
[0067] Calcium lignosulfonate: 5%
[0068] Add 0.2% sodium hydroxymethyl cellulose that accounts for the total weight of the above-mentioned raw materials.
[0069] The preparation method of the rod-shaped aggregate comprises the following steps:
[0070] (1) Prepare raw materials according to requirements: 85% of Guangxi white mud with a particle size of ≤45 μm, 10% of water glass, 5% of calcium lignosulfonate; and sodium hydroxymethyl cellulose;
[0071] (2) The raw materials prepared in step (1) are added to the planetary mixer according to the required dosage ratio for mixing and stirring, and the stirring is uniform to obtain the mixture;
[0072] (3) adding water accounting for 15% of the total weight of the mixture in the mixture described in step (2), ...
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