Active bauxite dressing tailing micro-powder, and preparation method thereof
A technology of tailings micro-powder and activated bauxite, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of inapplicable bauxite beneficiation tailings activation, etc., and achieve a simple and easy preparation method , the effect of solving discharge and stockpiling problems
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Embodiment 1
[0034] Embodiment 1: Determination of lime content in bauxite dressing tailings
[0035] Calcinate 100 kg of bauxite tailings at 800°C for 1.0 hour, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through a 80 μm square hole sieve, and mix 15 wt% of Slag fine powder, obtained powder A-1.
[0036] Mix 98 kg of bauxite tailings with 2 kg of lime evenly, calcinate at 800°C for 1.0 hour, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through an 80 μm square hole sieve, and the sieve residue is in the range of 10.0% Inside, 15wt% of slag fine powder was added to obtain powder A-2.
[0037] Mix 96 kg of bauxite tailings with 4 kg of lime evenly, calcinate at 800°C for 1.0 hour, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through a 80 μm square hole sieve, and the sieve residue is in the range of 10.0% Inside, 15wt% of slag fine powder was added to obtain powder...
Embodiment 2
[0046] Example 2: Preparation of active micropowder by mixing fly ash in bauxite dressing tailings
[0047] Calcinate 100kg of bauxite tailings at 850°C for 1.0 hour and 30 minutes, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through a 80μm square hole sieve, and mix 15wt % of slag powder, the resulting powder B-1.
[0048] Mix 98 kg of bauxite tailings with 2 kg of fly ash evenly, calcinate at 850°C for 1.0 hour and 30 minutes, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through an 80μm square hole sieve, and sieve the remaining In the range of 10.0%, 15wt% of slag fine powder was added to obtain powder B-2.
[0049] Mix 88 kg of bauxite tailings with 12 kg of fly ash evenly, calcinate at 850°C for 1.0 hour and 30 minutes, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through an 80μm square hole sieve, and sieve the remaining In the range of 10.0%, ...
Embodiment 3
[0055] Embodiment 3: the control of calcining temperature
[0056] Mix 96 kg of bauxite tailings with 4 kg of lime evenly, calcinate at 700°C for 1.0 hour, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through a 80 μm square hole sieve, and the sieve residue is in the range of 10.0% Inside, 15wt% of slag fine powder was added to obtain powder C-1.
[0057] Mix 96 kg of bauxite tailings with 4 kg of lime evenly, calcinate at 800°C for 1.0 hour, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through a 80 μm square hole sieve, and the sieve residue is in the range of 10.0% Inside, 15wt% of slag fine powder was added to obtain powder C-2.
[0058] Mix 96 kg of bauxite tailings with 4 kg of lime evenly, calcinate at 900°C for 1.0 hour, cool down to room temperature naturally, take it out and grind it in a ball mill, pass through an 80 μm square hole sieve, and the sieve residue is in the range of 10.0...
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