Method for recycling zinc-oxygen pressure leaching sulfur flotation tailings
A technology of sulfur flotation and resource utilization, applied in chemical instruments and methods, flotation, wet separation, etc., can solve problems such as difficulty in sales of sulfuric acid products, volatile flue, flue sticking, etc., to increase hydrophobicity and Floatability, high sulfur recovery, and increased stability
Active Publication Date: 2020-12-29
WESTERN MINING CO LTD +2
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to realize the harmless treatment of tailings slag in fire roasting treatment, but the elemental sulfur in it is relatively high, which is easy to volatilize to the flue and stick to the flue, which restricts the subsequent treatment. , and produce a large amount of sulfur dioxide, the sulfuric acid products of the output are difficult to sell, the tailings slag contains 15-20% elemental sulfur and other valuable metals, etc., to provide a method that can reduce the sulfur content in the tailings slag, and the enrichment part has Valence metals, in order to further reduce the output of oxygen pressure leaching slag, and realize the method of resource utilization of zinc oxygen pressure leaching sulfur flotation tailings
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[0020] Attached below figure 1 The present invention is further described by specific embodiment:
[0021] In this embodiment, 1L of zinc oxygen pressure leaching sulfur flotation tailings is taken, with a solid content of about 30%, and the test results are shown in Table 1:
[0022] Table 1 The test results of main elements in the floating sulfur tailings of zinc smelting by oxygen pressure leaching (%, * means g / t)
[0023] element Au* Ag* Zn Pb Fe S content 0.15 135.95 1.21 3.31 34.88 15.00
[0024] The process steps are:
[0025] 1) Add NaCl to the oxygen pressure leaching sulfur flotation tailings at 60g / t, add butyl ammonium black drug at 600g / t after 2 minutes, add Z-20075g / t after 2 minutes, and then add 2# oil after 2 minutes It is 28g / t, and after 1min, it is transported to the roughing tank to obtain roughing concentrate and roughing tailings.
[0026] 2) overflow the roughing concentrate obtained in step 1) to the concentrat...
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The invention discloses a method for recycling zinc-oxygen pressure leaching sulfur flotation tailings. According to the method for recycling the zinc-oxygen pressure leaching sulfur flotation tailings, one-stage roughing, one-stage concentration and two-stage scavenging are carried out again on the flotation tailings to obtain sulfur-containing concentrate and tailings, then size fraction screening is carried out on the tailings to obtain oversize products and undersize products, the oversize products are mainly gold-enriched slag, and the undersize products are mainly silver-enriched slag. Effective separation of sulfur, gold and silver is achieved through combination of reagent flotation and size fraction screening; and the problems that the oxygen pressure leaching sulfur flotation tailings are high in sulfur content, low in gold and silver content and incapable of being recycled are solved, so that the oxygen pressure leaching sulfur flotation tailings are recycled, and the methodfor recycling the zinc-oxygen pressure leaching sulfur flotation tailings has the advantages that the sulfur content is reduced, and the gold, silver and sulfur separation is achieved.
Description
technical field [0001] The invention relates to the technical field of comprehensive recovery of hydrometallurgy and ore dressing, in particular to a method for realizing resource utilization of tailings (slag) from zinc-oxygen pressure leaching sulfur flotation. Background technique [0002] Oxygen pressure leaching full wet treatment process of zinc sulfide concentrate, sulfur is efficiently recovered in the form of simple substance, which eliminates the pollution caused by sulfur-containing flue gas emissions to the environment, and is harmful to high-iron sphalerite, lead-containing zinc concentrate and insoluble iron Zinc acid and ferrite residues, with a wide range of adaptability. Compared with the conventional smelting process of calcine leaching zinc, it has the advantages of high zinc recovery rate, better iron enrichment effect, advanced automatic control level, high equipment utilization rate and operation rate. Therefore, the oxygen pressure leaching full-wet z...
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IPC IPC(8): B03B7/00B03D1/02B03D1/008B03D1/012B07B1/28B03D101/02B03D101/04
CPCB03B7/00B03D1/02B03D1/008B03D1/012B07B1/28B03D2201/04B03D2201/02
Inventor 孔德鸿马松勃李耀山王铧泰赖春华孔俊杰张春发李金琼廖园园黎永娟高昭伟
Owner WESTERN MINING CO LTD
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