Polymeric calcium aluminosilicate coagulant prepared from gold tailings
A technology of polymerizing aluminum silicate and gold tailings, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., to achieve the effect of improving the recycling rate and benefiting environmental protection
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Embodiment 1
[0009] Get the finely ground gold tailings, soak in mixed acid solution (50% acetic acid+50% hydrochloric acid) for 8 hours and take the filtrate for later use; then soak the remaining residue in 2.5mol / L sodium hydroxide solution and heat to get the filtrate, The pH of the filtrate was adjusted to 2.5. At 40°C, mix and stir the mixed acid filtrate and sodium hydroxide filtrate in proportion, add a certain amount of oxidant, and mature for 7 days to obtain the polymeric aluminum calcium silicate coagulant. The polyaluminum calcium silicate coagulant of the present invention is made of the following raw materials in mass percentage:
[0010] Mixed acid filtrate 50%
[0011] Sodium Hydroxide Filtrate 45%
[0012] Calcium hypochlorite 5%
[0013] Acetic acid, hydrochloric acid, sodium hydroxide, and calcium hypochlorite are all industrial grades, and the polyaluminum calcium silicate coagulant is an industrial grade liquid.
Embodiment 2
[0015] Get the finely ground gold tailings, soak in mixed acid solution (60% acetic acid+40% hydrochloric acid) for 9 hours and take the filtrate for later use; then soak the remaining residue in 2.0mol / L sodium hydroxide solution and heat to get the filtrate, The pH of the filtrate was adjusted to 2.0. At 45°C, mix and stir the mixed acid filtrate and sodium hydroxide filtrate in proportion, add a certain amount of oxidant, and mature for 8 days to obtain the polymeric calcium aluminum silicate coagulant. The polyaluminum calcium silicate coagulant of the present invention is made of the following raw materials in mass percentage:
[0016] Mixed acid filtrate 55%
[0017] Sodium hydroxide filtrate 38%
[0019] Acetic acid, hydrochloric acid, sodium hydroxide, and calcium chlorate are all industrial grades, and the polyaluminum calcium silicate coagulant is an industrial grade liquid.
Embodiment 3
[0021] Get the finely ground gold tailings, soak in mixed acid solution (70% acetic acid+30% hydrochloric acid) for 10h and take the filtrate for later use; then soak the remaining residue in 1.8mol / L sodium hydroxide solution and heat to get the filtrate, The pH of the filtrate was adjusted to 1.8. At 50°C, mix and stir the mixed acid filtrate and sodium hydroxide filtrate in proportion, add a certain amount of oxidant, and mature for 9 days to obtain the polymerized calcium aluminum silicate coagulant. The polyaluminum calcium silicate coagulant of the present invention is made of the following raw materials in mass percentage:
[0022] Mixed acid filtrate 60%
[0023] Sodium Hydroxide Filtrate 30%
[0024] Calcium Perchlorate 10%
[0025] Acetic acid, hydrochloric acid, sodium hydroxide, and calcium perchlorate are all industrial grades, and the polyaluminum calcium silicate coagulant is an industrial grade liquid.
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