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
Inactive Publication Date: 2019-01-11
WUHAN UNIV OF SCI & TECH
8 Cites 4 Cited by
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Abstract
The invention relates to a passivated calcium oxide particle and a preparation method thereof. The preparation method comprises the following steps: adding calcium hydroxide powder and water accounting for 10-30% of the weight of the calcium hydroxide powder into a material barrel for a granulating device, performing granulation at a rotating speed of a rotor of 200-2000 rpm to convert the calciumhydroxide powder in the material barrel into particles, and spraying a coupling agent solution accounting for 0.1-6% of the weight of the calcium hydroxide powder at the rotating speed of the rotor of 200-2000 rpm in order to obtain calcium hydroxide particles; and drying the calcium hydroxide particles at 50-110 DEG C for 12-24 h, adding the dried particles into a heating furnace, performing heat insulation at 1500-1700 DEG C for 1-5 h, and cooling the particles to prepare the passivated calcium oxide particle. The preparation method is simple, and the prepared passivated calcium oxide particle has a good hydration resistance, and can be used as a raw material for preparing calcium oxide ceramic, refractive materials and other high-grade materials.
Application Domain
Calcium/strontium/barium oxides/hydroxides
Technology Topic
Calcium hydroxideHeating furnace +4
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PUM
Property | Measurement | Unit |
Particle size | 0.1 ~ 3.0 | mm |
Bulk density | 2.8 ~ 3.0 | g/cm³ |
Particle size | 2.0 ~ 5.0 | mm |
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