Method for recycling cyanide through high-pressure circulating countercurrent washing of cyanidation tailings
A high-pressure circulation, countercurrent washing technology, applied in metal cyanide, chemical instruments and methods, simple alkali metal cyanide, etc., can solve the problems of unstable treatment effect, easy generation of sulfur dioxide, affecting process indicators, etc., to achieve environmental and economical Significant social benefits, good washing effect and safe process operation
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[0028] Example 1
[0029] It includes the following steps:
[0030] (1) Pass the high-concentration cyanide-containing ore slurry of the gold concentrate bio-oxidation gold extraction enterprise into the compressed filter press 14 for pressure filtration to form a filter cake;
[0031] (2) Maintain the compressed state of the filter press, perform "one high-pressure washing" with clean water, and the washing liquid evenly passes through the filter cake to produce washing liquid one;
[0032] (3) Maintain the compressed state of the filter press and perform "secondary high-pressure washing" with clean water. The washing liquid evenly passes through the filter cake to produce washing liquid two;
[0033] (4) Washing liquid 1 directly enters buffer tank 1, pumped into heater 2, and then flows into reactor 1 3, reactor 2 4, reactor 3 5, reactor 4 6, buffer tank 2 7, pumped in Harmonization tank one 8, free flow into neutralization tank two 9, and then into buffer tank three 10;
[0034] (5)...
Example Embodiment
[0050] Example 2
[0051] It includes the following steps:
[0052] (1) Pass the high-concentration cyanide-containing ore slurry of the gold concentrate bio-oxidation gold extraction enterprise into the compressed filter press 14 for pressure filtration to form a filter cake;
[0053] (2) Maintain the compressed state of the filter press, perform "one high-pressure washing" with clean water, and the washing liquid evenly passes through the filter cake to produce washing liquid one;
[0054] (3) Maintain the compressed state of the filter press and perform "secondary high-pressure washing" with clean water. The washing liquid evenly passes through the filter cake to produce washing liquid two;
[0055] (4) Washing liquid 1 directly enters buffer tank 1, pumped into heater 2, and then flows into reactor 1 3, reactor 2 4, reactor 3 5, reactor 4 6, buffer tank 2 7, pumped in Harmonization tank one 8, free flow into neutralization tank two 9, and then into buffer tank three 10;
[0056] (5)...
Example Embodiment
[0072] Example 3
[0073] It includes the following steps:
[0074] (1) Pass the high-concentration cyanide-containing ore slurry of the gold concentrate bio-oxidation gold extraction enterprise into the compressed filter press 14 for pressure filtration to form a filter cake;
[0075] (2) Maintain the compressed state of the filter press, perform "one high-pressure washing" with clean water, and the washing liquid evenly passes through the filter cake to produce washing liquid one;
[0076] (3) Maintain the compressed state of the filter press and perform "secondary high-pressure washing" with clean water. The washing liquid evenly passes through the filter cake to produce washing liquid two;
[0077] (4) Washing liquid 1 directly enters buffer tank 1, pumped into heater 2, and then flows into reactor 1 3, reactor 2 4, reactor 3 5, reactor 4 6, buffer tank 2 7, pumped in Harmonization tank one 8, free flow into neutralization tank two 9, and then into buffer tank three 10;
[0078] (5)...
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