General portland cement modifying agent containing high cementing property mineral C4A3* and application method thereof
A technology for Portland cement and cement modifier, which is applied in the field of general Portland cement modifier, can solve the problems of difficulty in industrial production control, difficulty in achieving the design purpose, narrow coexisting temperature range, etc., and achieves shortened setting time, The effect of improving performance and reducing production costs
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Embodiment 1
[0017] (1) A mineral containing high gelling properties Preparation of Universal Portland Cement Modifier
[0018] ①Using fly ash, natural gypsum and limestone as raw materials, Al contained in fly ash 2 o 3 to form the most The ingredients are calculated on the basis of minerals, and the chemical composition of the raw materials is shown in Table 1.
[0019] Table 1 calculates the chemical composition of the required raw materials
[0020]
loss
SiO 2
al 2 o 3
Fe 2 o 3
CaO
MgO
SO 3
∑
fly ash
2.37
50.11
36.69
5.55
3.12
0.56
-
98.40
Bauxite tailings
13.89
40.19
43.17
1.48
0.71
0.47
99.91
limestone
42.77
2.12
0.33
0.24
52.79
1.43
-
99.58
plaster
18.10
5.02
0.45
0.24
30.17
0.24
42.50
96.72
[0021]...
Embodiment 2
[0028] (1) Using bauxite tailings, natural gypsum and limestone as raw materials, the Al contained in bauxite tailings 2 o 3 to form the most Minerals are used as the basis for calculation of ingredients. According to the chemical composition calculation of the raw materials in Table 1, the ratio of raw materials obtained in this embodiment is: bauxite tailings 29.64%; gypsum 7.78%; limestone 62.58%; plus 0.5% CaF of the above-mentioned raw material quality 2 As a mineralizer, it is prepared as a raw material batch for modifiers;
[0029] ② Grind the batch material until the residue on the 0.08mm square hole sieve is less than 15%, and calcinate at 1320°C for 30min to obtain clinker;
[0030] ③ The clinker is mixed with 8% gypsum (calculated based on the total mass of the modifier), and ground to a 0.08mm square hole sieve with a residue of less than 10%, to obtain a cement modifier.
[0031] (2) A mineral containing high gelling properties Application method of universa...
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