Method for producing baking-free bricks by solidifying construction wastes by utilizing phosphogypsum
A construction waste, non-burning brick technology, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of large accumulation of phosphogypsum and construction waste, difficult to deal with, and avoid secondary environmental problems. Pollution, low cost, and the effect of reducing energy consumption
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Embodiment 1
[0036] A. Prepare materials according to the following mass components:
[0037] Phosphogypsum 80kg Construction waste 600kg
[0038] Yellow phosphorus slag 10kg Fly ash 5kg
[0039] Quicklime 5kg Water glass 8kg
[0040] Soda ash 2.5kg Caustic soda 1.5kg
[0041] Polycarboxylate 3kg Calcium Fluosilicate 1.5kg
[0042] Sodium Fluosilicate 1.5kg Sodium Chloride 5kg
[0043] Urban domestic sewage 95kg
[0044] in,
[0045] Construction waste refers to construction waste from which plastics, wood and daily necessities have been removed, and the construction waste is crushed to a particle size of 0.2mm, and the iron is removed with a conventional magnetic separator;
[0046] B. Dry the yellow phosphorus slag, fly ash, and quicklime to a moisture content of 4%, add calcium fluorosilicate, sodium fluorosilicate, and sodium chloride, and grind until the particle size of the powder is less than 0.083mm;
[0047] C. Dissolving water glass, soda ash, caustic soda and polycarboxyl...
Embodiment 2
[0053] A. Prepare materials according to the following mass components:
[0054] Phosphogypsum 70kg Construction waste 500kg
[0055]Fly ash 30kg Water glass 10kg
[0056] Caustic soda 5kg Calcium lignosulfonate 2kg
[0057] Sodium lignosulfonate 1kg Sodium humate 1kg
[0058] Sodium Phosphate 3kg Sodium Sulphate 2kg
[0059] A total of 70kg of ordinary tap water, papermaking wastewater, red mud attached liquid, and alkali-containing wastewater, of which:
[0060] Construction waste is construction waste from which plastics, wood and daily necessities have been removed, and the construction waste is crushed to a particle size of 2 mm, and the iron is removed by magnetic suction with a conventional magnet machine;
[0061] B. Dry the fly ash to a water content of 3%, add sodium phosphate and sodium sulfate, and grind until the particle size of the powder is less than 0.083mm;
[0062] C. Dissolving water glass, caustic soda, calcium lignosulfonate, sodium lignosulfonate, a...
Embodiment 3
[0068] A. Prepare materials according to the following mass components:
[0069] Phosphogypsum 60kg Construction waste 400kg
[0070] Blast furnace slag 20kg Carbide slag 20kg
[0071] Water glass 8kg Caustic soda 2kg
[0072] Calcium lignosulfonate 2kg Sodium lignosulfonate 2kg
[0073] Sodium chloride 5kg Sodium sulfate 5kg
[0074] Salt waste water and condensed water total 100kg, of which:
[0075] Construction waste refers to construction waste that removes plastics, wood and daily necessities, and the construction waste is crushed to a particle size of 1mm, and the iron is absorbed by a conventional magnet machine;
[0076] B. Dry the blast furnace slag and calcium carbide slag to a moisture content of 2%, add sodium chloride and sodium sulfate, and grind until the particle size of the powder is less than 0.083mm;
[0077] C. dissolving water glass, caustic soda, calcium lignosulfonate, and sodium lignosulfonate in saline waste water and condensed water to prepare a...
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