Process of producing iron oxide red pigment with side product from ore dressing of high iron bauxite
A technology of high iron bauxite and red iron oxide, applied in fibrous fillers and other directions, can solve the problems of unstable raw material sources, lack of mature technology for reference, complex production technology, etc., and achieve good comprehensive utilization effect.
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Embodiment 1
[0023] Pass the beneficiation by-products containing 80% ferric oxide through a stirring ball mill, use CSN-1 as the surface modifier, and the dosage is 0.05% of the dry ore weight; add the surface modifier to the iron-containing ore, and carry out fine grinding in the ball mill, The grinding concentration is 25%, the ball-to-material ratio is 6:1, the grinding time is 4 hours, and the particle size is less than 2 μm. After solid-liquid separation and drying, roast at 600°C for 90 minutes, and obtain qualified iron oxide by jet crushing. Red, its performance is the same as wet method.
Embodiment 2
[0025] The beneficiation by-product containing 85% ferric oxide is passed through a stirring ball mill, and HAN-12 is added as a surface modifier, and the dosage is 0.15% of the dry ore weight; through a stirring ball mill, the grinding concentration is 75%, and the ball-to-material ratio is 6: 1. Grind ore for 4 hours until the particle size is less than 2μm. After solid-liquid separation and drying, roast at 700°C for 60 minutes, and obtain qualified iron oxide red through jet crushing. Its performance is the same as that of wet method.
Embodiment 3
[0027] The beneficiation by-product containing 80% ferric oxide is passed through a stirring ball mill, and CSN-1 is added as a surface modifier, and the dosage is 0.15% of the dry ore weight; through a stirring ball mill, the grinding concentration is 75%, and the ball-to-material ratio is 6: 1. Grind ore for 5 hours until the particle size is less than 1.5μm. After solid-liquid separation and drying, roast at 650°C for 100 minutes, and then jet mill to obtain qualified iron oxide red, which has the same performance as wet method.
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