Method for preparing low-carbon cement clinker by utilizing iron tailings
A low-carbon cement clinker and iron tailings technology, applied in cement production, etc., can solve the problems of reduced emissions and sintering temperature lower than 1400°C, and achieve reduced emissions, good stability, and low heat of hydration Effect
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[0025] 1. First select the raw material:
[0026] Iron tailings: SiO 2 、Al 2 o 3 and Fe 2 o 3 The weight percentages are 72.40%, 7.84% and 7.80% respectively;
[0027] Limestone: 53.67% by weight of CaO;
[0028] Mineralizer: a mixture of natural gypsum and fluorite in a weight ratio of 10:1.
[0029] 2. After the raw material is selected, it is prepared according to the following weight (%):
[0030] Iron tailings 24.7
[0031] Limestone 71.8
[0032] Mineralizer 3.5
[0033] 3. After the raw materials are selected, the process steps are:
[0034] First, mix the raw materials described in step 2 and grind until the particle size reaches 10% of the 0.08mm square hole sieve, then calcinate at 1380°C for 20 minutes, and cool to obtain the low-carbon cement clinker of the present invention.
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