Method and system for treating gold-containing slag
A technology of tailings and slag particles, which is applied in the field of metallurgy, can solve the problems of mercury poisoning of operators, complicated recovery process, and low recovery rate of valence metals, and achieve the effect of improving production safety factor
Inactive Publication Date: 2015-09-02
鹤庆北衙矿业有限公司
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Problems solved by technology
Among them, the lead assay gold method specifically first crushes the gold-containing slag, and then mixes the broken gold-containing slag with NaNO 3 、Na 2 CO 3 , PbO mixed according to the mass ratio of 5:1:2:8 and put into a refractory crucible, then cover a thin layer of borax on the surface of the crucible, put it in a high-temperature furnace at 1200 ° C to melt the lead buckle, and finally blow the lead buckle ash to get the coarse However, this method is likely to lead to lead pollution and lead poisoning; the gravity separation method, mercury mixing method, and cyanidation method specifically crush and finely grind the gold-containing slag in turn, and then use the gravity separation method, mercury mixing method or cyanide method to However, the recovery process of this method is relatively complicated, and the recovery rate of valuable metals is low, and the amalgamation method may cause mercury poisoning of workers
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[0073] The gold-containing slag (composition as shown in table 1) is carried out to the first crushing treatment to obtain the gold-containing slag particles; the gold-containing slag particles and sodium carbonate, borax, saltpeter, copper are 1:0.05:0.1:0.02 according to the mass ratio: 0.04 for mixing to obtain a mixed material; the mixed material was smelted in an intermediate frequency furnace at 1500 degrees Celsius for 20 minutes to obtain a smelting slag liquid; the obtained smelting slag liquid was poured into a mold for natural cooling to obtain a solid smelting slag; The solid smelting slag was subjected to the second crushing treatment to obtain tailings and alloy ingots. The analysis data in the obtained tailings are shown in Table 1.
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The invention discloses a method and system for treating gold-containing slag. The gold-containing slag contains at least one of gold, silver, copper and iron. The method comprises the following steps: (1) carrying out first crushing treatment on the gold-containing slag to obtain gold-containing slag granules; (2) mixing the gold-containing slag granules with sodium carbonate, borax, saltpetre and copper to obtain a mixture; (3) smelting the mixture to obtain a smelting slag solution; (4) cooling the smelting slag solution to obtain solid smelting slag; and (5) carrying out second crushing treatment on the solid smelting slag to obtain tailings and an alloy ingot, wherein the alloy ingot contains gold and silver. The method can obviously enhance the recovery rates of gold and silver, and does not generate pollution in a working environment.
Description
technical field [0001] The invention belongs to the technical field of metallurgy, in particular, the invention relates to a method and a system for treating gold-bearing slag. Background technique [0002] The traditional techniques for treating gold-bearing slag mainly use the lead assay method, gravity separation method, amalgamation method and cyanidation method. Among them, the lead assay gold method specifically first crushes the gold-containing slag, and then mixes the broken gold-containing slag with NaNO 3 、Na 2 CO 3 , PbO mixed according to the mass ratio of 5:1:2:8 and put into a refractory crucible, then cover a thin layer of borax on the surface of the crucible, put it in a high-temperature furnace at 1200 ° C to melt the lead buckle, and finally blow the lead buckle ash to get the coarse However, this method is likely to lead to lead pollution and lead poisoning; the gravity separation method, mercury mixing method, and cyanidation method specifically crush ...
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Login to View More IPC IPC(8): C22B7/04C22B11/00
CPCY02P10/20
Inventor 尚朝表韦忠发杨少坤李洪松乔天强王伟华郭艳敏
Owner 鹤庆北衙矿业有限公司