Treatment method for arsenic and antimony gold-loaded materials
A treatment method and a gold-carrying technology, applied in the field of metallurgy, can solve problems such as low resource utilization, cumbersome washing steps, and high technical difficulty, and achieve the effects of high resource utilization, fast gold leaching speed, and simple process
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Embodiment 1
[0035] refer to figure 1 As shown, a method of using manganese oxide minerals to strengthen the chlorination and leaching of arsenic-containing antimony gold-loaded materials. The arsenic-containing antimony gold ore is taken from a high-arsenic and high-antimony refractory gold concentrate in Hunan, containing 3.72% arsenic and 7.56% antimony , Sulfur content is 17.2%, gold content is 60.2g / t, and the gold leaching rate is lower than 20% in direct cyanidation leaching. The manganese oxide used is a high-grade pyrolusite in Liaoning, and the Mn grade is 53.3%. The two types of ores are ground to -200 mesh and account for 90%. The material is prepared with the ratio of the amount of Mn:S in the material at 4:1, and added to 100mL of sulfuric acid solution with a concentration of 3mol / L. The liquid-solid ratio is 5: 1 Mix the slurry evenly, place the mixed slurry in a sealed reaction kettle, heat up and stir for oxidative leaching, the leaching speed is 300r / min, the oxidative l...
Embodiment 2
[0039] refer to figure 1 As shown, a method of using manganese oxide minerals to strengthen chlorination and leaching of arsenic-antimony-containing gold-loaded materials. The arsenic-antimony cyanide tailings are taken from a cyanide smelter in Fujian. The ore contains 2.13% arsenic, 0.56% antimony, The sulfur content is 29.2%, and the gold content is 4.2g / t. After leaching and roasting, the recovery rate of gold and cyanidation leaching is 43%. The manganese oxide used is oceanic manganese nodules, containing 20.7% manganese, 1.7% nickel, 0.2%, copper 1.3%. The two types of materials are ground to -200 mesh, accounting for 85%. The ratio of the amount of Mn:S in the material is 3.5:1. The material is added to 1000mL of sulfuric acid solution with a concentration of 2.5mol / L at a liquid-solid ratio of 6:1. The mixed slurry is placed in a heated reactor for constant temperature stirring oxidation-reduction leaching, the leaching speed is 300r / min, the leaching reaction temper...
Embodiment 3
[0041] refer to figure 1 As shown, a method of using manganese oxide minerals to strengthen chlorination to leaching arsenic-antimony-containing gold-loaded materials. The refractory gold sulfide concentrate containing arsenic and antimony is taken from Yunnan. The ore contains 6.6% arsenic, 2.6% antimony, and sulphur. The gold content is 20.2%, the gold content is 48.2g / t, and the gold is leached by strong oxidation under the excess gold chloride leaching agent, and the gold extraction rate reaches 96.3%; the manganese oxide used is Hunan low-grade manganese oxide ore, and the manganese grade is 22.5%. The two types of materials are ground to -200 mesh, accounting for 93%, and the ratio of the amount of Mn:S in the materials is 5:1 to combine the materials, and add 300mL of sulfuric acid with a concentration of 3.5mol / L according to the liquid-solid ratio of 10:1 Mixed slurry is placed in the solution, and the mixed slurry is placed in a heated reactor for constant temperatur...
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