Preparation method of calcined kaolin with high oil absorption
A technology of calcined kaolin and high oil absorption, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as difficulty in dispersion, equipment corrosion, and difficulty in storage, and achieve the effect of easy dispersion and non-corrosive viscosity.
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Embodiment 1-3
[0021] Embodiment 1-3: The preparation method of the high oil absorption calcined kaolin adopts the following process.
[0022] Coal series kaolinite is screened, ore washed, crushed, milled, stripped, and spray-dried to form raw meal. The raw meal is depolymerized and dispersed, then calcined into clinker, and finally the clinker is depolymerized and dispersed to obtain calcined Kaolin.
[0023] 1. Raw ore ratio: Shanxi Hunyuan Coal Measures Kaolinite 40~50wt%, Shanxi Huairen Coal Measures Kaolinite 30~40wt%, Shanxi Tashan Coal Measures Kaolinite 10~30wt%;
[0024] According to the composition content of each raw ore, it is configured into the following three weight ratios of coal-measure kaolinite ore blending:
[0025] (1) SiO 2 : 44.5%; Al 2 o 3 : 39.5%; Fe 2 o 3 : 0.1%; TiO 2 : 0.9%; LOI: 15%.
[0026] (2) SiO 2 : 45.8%; Al 2 o 3 : 37%; Fe 2 o 3 : 0.2%; TiO 2 : 1.0%; LOI: 16%.
[0027] (3) SiO 2 : 46.5%; Al 2 o 3 : 38.15%; Fe 2 o 3 : 0.25%; TiO 2 : 1....
Embodiment 4-6
[0049] Embodiment 4-6: The preparation method of the high oil absorption calcined kaolin adopts the following process.
[0050] The kaolin is screened, ore washed, crushed, milled, stripped, and spray-dried to form a raw meal. The raw meal is depolymerized and dispersed, and then the clinker is calcined. Finally, the clinker is depolymerized and dispersed to obtain calcined kaolin.
[0051] 1. Raw ore ratio: Maoming kaolin 60-80wt%, Longyan kaolin 20-40wt%
[0052] According to the composition content of each raw ore, it is configured into the following three kinds of kaolin ore blending ratios by weight:
[0053] (1) SiO 2 : 44.5%; Al 2 o 3 : 39%; Fe 2 o 3 : 0.2%; TiO 2 : 1.1%; LOI: 15.2%.
[0054] (2) SiO 2 : 45.5%; Al 2 o 3 : 39.5%; Fe 2 o 3 : 0.2%; TiO 2 : 0.8%; LOI: 14%.
[0055] (3) SiO 2 : 46.5%; Al 2 o 3 : 37%; Fe 2 o 3 : 0.1%; TiO 2 : 0.4%; LOI: 16%.
[0056] 2. Raw meal depolymerization and breaking up parameters
[0057] Current: 150-170A
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