Method of preparing inorganic high molecular flocculant polysilicate ferric zinc from copper tailings
A technology of inorganic polymer and polysilicate iron, which is applied in the field of solid waste utilization research, can solve the problems that hinder the sustainable development of copper smelting enterprises, the tailings are not well utilized, and the cost of raw materials is high, so as to achieve good social benefits and economic benefits, enhance the use of added value, and reduce pollution
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[0031] Example 1
[0032] The iron content of the copper tailings used in this embodiment is 40 wt%, the silica content is 34 wt%, and the zinc content is 2 wt%.
[0033] reference figure 1 , The copper tailings are added to the sulfuric acid solution with a concentration of 4mol / L, the adding ratio is that the mass ratio of the copper tailings and the sulfuric acid solution is 1:5, and then 15% of the copper tailings mass is added to the solution. It is 30wt% hydrogen peroxide. Place the above-mentioned solid-liquid mixed solution in a water bath, stir for 5 hours under the condition of constant temperature heating in a water bath at 100°C to dissolve the copper tailings, and then stand for 3 hours to obtain a mixed solution of the lower layer precipitate and the supernatant liquid;
[0034] Dilute the sodium silicate solution (water glass) with water to a concentration of about 15% by weight, and measure the molecular weight of polysilicic acid by viscometry. When the molecular w...
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[0038] Example 2
[0039] The copper tailings used in this embodiment have an iron content of 40 wt%, a silica content of 35 wt%, and a zinc content of 2.5 wt%.
[0040] reference figure 1 , The copper tailings are added to the sulfuric acid solution with a concentration of 7mol / L, and the ratio of the copper tailings to the sulfuric acid solution is 1:3, and then 10% of the copper tailings mass is added to the solution. It is 40wt% hydrogen peroxide. Place the above-mentioned solid-liquid mixed solution in a water bath, stir for 3 hours under the condition of constant temperature heating in a water bath at 100°C to dissolve the copper tailings, and then stand for 1 hour to obtain a mixture of the lower layer precipitate and the supernatant liquid;
[0041] Dilute the sodium silicate solution with water to a concentration of about 15% by weight, and measure the molecular weight of polysilicic acid by viscometry. When the molecular weight of polysilicic acid is 300 to 400,000 dalton...
Example Embodiment
[0045] Example 3
[0046] The iron content of the copper tailings used in this embodiment is 38 wt%, the silica content is 34 wt%, and the zinc content is 1.5 wt%.
[0047] reference figure 1 , The copper tailings are added to the sulfuric acid solution with a concentration of 7 mol / L, and the ratio of the copper tailings to the sulfuric acid solution is 1:4, and then 10% of the copper tailings mass is added to the solution. It is 38wt% hydrogen peroxide. Place the above-mentioned solid-liquid mixed solution in a water bath, stir for 3 hours under the condition of constant temperature heating in a water bath at 100°C to dissolve the copper tailings, and then stand for 1 hour to obtain a mixture of the lower layer precipitate and the supernatant liquid;
[0048] Dilute the sodium silicate solution with water to a concentration of about 15% by weight, and measure the molecular weight of polysilicic acid by viscometry. When the molecular weight of polysilicic acid is 300 to 400,000 da...
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