Polyaluminum ferric silicate flocculating agent and preparation method
A technology of polyaluminum iron silicate and polyaluminum iron silicate, which is applied in the field of solid waste resource utilization, can solve problems such as land occupation, resource waste, ecological and environmental damage, and achieve pollution avoidance, resource conservation, and equipment corrosion problem simple effect
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Embodiment 1
[0024] Mix coal gangue, fly ash and red mud at a ratio of 1:1:1.5 as a mixed raw material, wherein the ratio of Si / Al / Fe in the mixed raw material is 30 / 40 / 30, and the mixed raw material can contain Ca, Mg , Na, K, Ti and other components, which cannot be used to limit the protection scope of the present invention.
[0025] Take 1000g of the above-mentioned mixed raw materials and ball mill them to be more than 100 meshes, mix them uniformly with an activator to prepare a raw meal, the activator is ammonium chloride, and the mass ratio of the activator to the mixed raw materials is 7:1; The material is transferred to a roasting furnace for roasting at 650°C with a reaction pressure of 0.3 MPa, and the clinker is obtained after roasting for 2 hours; the clinker is transferred to 1.5L of water for water quenching to obtain a crude product with a particle size of 10-100 μm, and the crude product is After wet grinding, add 4.5L of water, fully stir at 90°C for 2 hours, and then se...
Embodiment 2
[0027] Get 1000g of the mixed raw material in Example 1 and pulverize it to more than 100 meshes, mix it with an activator evenly to prepare a raw meal, the activator is ammonium sulfate, and the mass ratio of the activator to the mixed raw material is 8:1; Transfer the finished raw meal to a roasting furnace for roasting at 700°C with a reaction pressure of 0.3 MPa, and obtain clinker after roasting for 2 hours; transfer the clinker to 1.5L of water for water quenching to obtain a crude product with a particle size of 10-100 μm. After wet grinding the crude product, add it to 4.5L of water, stir at 90°C for 2 hours, and then separate the solid and liquid to obtain filtrate A and filter residue B; add 25g of calcium aluminate to filtrate A, and at the same time add industrial Adjust the pH of the solution to 2.2-2.5 with sulfuric acid, and stir and react at 60-80°C for 4 hours. After the reaction, let it stand for 2 hours to obtain a solution C containing polyaluminum ferric su...
Embodiment 3
[0029] Get 1000g of the mixed raw material in Example 1 and pulverize it to more than 100 meshes, and mix it with an activator evenly to prepare a raw meal. The activator is a mixture of ammonium chloride and ammonium sulfate with a mass ratio of 1:1, and the activator is mixed with The mass ratio of raw materials is 8:1; the prepared raw meal is transferred to a roasting furnace for roasting at 700°C, the reaction pressure is 0.3MPa, and the clinker is obtained after roasting for 2 hours; the clinker is transferred to 1.5L of water for water Quenching to obtain a crude product with a particle size of 10-100 μm. After wet grinding the crude product, add it to 4.5 L of water, stir it at 90 ° C for 2 hours, and then separate the solid and liquid to obtain the filtrate A and filter residue B; add 25 g of calcium aluminate to the filtrate In A, add inorganic acid to adjust the pH of the solution to 2.2-2.5, and stir and react at 60-80°C for 4 hours. After the reaction, let it stan...
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