Passivated calcium oxide particle and preparation method thereof
A technology of calcium oxide and calcium hydroxide, applied in the field of calcium oxide materials, to achieve the effects of simple production process, convenient storage and production, and good hydration resistance
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Embodiment 1
[0019] A passivated calcium oxide particle and a preparation method thereof. The preparation method described in this embodiment is: placing calcium hydroxide powder and 10-20 wt% of the calcium hydroxide powder in the bucket of the granulation equipment, and the rotor speed is 1700-2000 per minute. The granulation is started under the condition of rotation. After the calcium hydroxide powder in the barrel is converted into particles, the rotor speed is 200-800 rotations per minute, and 0.5~0.5% of the calcium hydroxide powder is sprayed. 2wt% coupling agent solution to obtain calcium hydroxide particles; the calcium hydroxide particles are dried at 90-110°C for 12-16 hours, and then placed in a heating furnace, and kept at 1500-1600°C After cooling for 3 to 5 hours, passivated calcium oxide particles are obtained.
[0020] The coupling agent solution is a titanate coupling agent solution.
[0021] The passivated calcium oxide particles prepared in this embodiment are tested: the...
Embodiment 2
[0023] A passivated calcium oxide particle and a preparation method thereof. The preparation method described in this embodiment is: placing calcium hydroxide powder and 20-30 wt% of the calcium hydroxide powder in the bucket of the granulation equipment, and the rotor speed is 1400-1700 per minute. The granulation is started under the condition of rotation. After the calcium hydroxide powder in the bucket is converted into particles, the rotor rotates at 800 to 1,400 revolutions per minute. 4wt% coupling agent solution to obtain calcium hydroxide particles; the calcium hydroxide particles are dried at 80-100°C for 16-20 hours, and then placed in a heating furnace, and kept at 1600-1700°C After cooling for 1 to 3 hours, passivated calcium oxide particles are obtained.
[0024] The coupling agent solution is an aluminate coupling agent solution.
[0025] The passivated calcium oxide particles prepared in this embodiment are tested: the particle size of the calcium oxide particles ...
Embodiment 3
[0027] A passivated calcium oxide particle and a preparation method thereof. The preparation method described in this embodiment is: placing calcium hydroxide powder and 10-20wt% of the calcium hydroxide powder with water in the bucket of the granulation equipment, and the rotor speed is 900-1400 per minute. The granulation is started under the condition of rotation. After the calcium hydroxide powder in the barrel is converted into particles, the rotor speed is 1400 to 1700 revolutions per minute. 6wt% of the coupling agent solution to obtain calcium hydroxide particles; the calcium hydroxide particles are dried at 50-70°C for 20-24 hours, and then placed in a heating furnace and kept warm at 1500-1600°C After cooling for 1 to 3 hours, passivated calcium oxide particles are obtained.
[0028] The coupling agent solution is a zirconate ester coupling agent solution.
[0029] The passivated calcium oxide particles prepared in this example have been tested: the particle size of the...
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Abstract
Description
Claims
Application Information

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