A beneficiation method for comprehensive recovery of combined silver and copper from low-grade manganese-bearing ores
A beneficiation method and manganese ore technology are applied in the field of comprehensive recovery combined with silver and copper beneficiation, which can solve the problems of low degree of industrialization, high cost, and single type of recovered metal, and achieve the effect of low-cost, high-efficiency recovery and good recovery effect.
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Embodiment 1
[0040] The raw ore is iron-manganese polymetallic mine in Northwest Yunnan, China, with a grade of manganese of 3.87%, a grade of silver of 63.56g / t, and a grade of copper of 0.39%.
[0041] The raw ore is crushed by the jaw crusher and then enters the ball mill to grind to obtain the product. The grinding fineness is -0.074mm, accounting for 70%. Grinding products enter the ceramic filter, the filtrate returns to the grinding operation, the filter cake is added to the circulating acid leaching solution, the concentration is guaranteed to be 35%, and 20Kg of scrap iron scraps are added to each ton of raw ore and stirred evenly, and then 130Kg of concentrated sulfuric acid is added to ensure that every ton of raw ore The pH of the first tank is 3.5, and the strong stirring leaching is carried out. The stirring and leaching time is 4 hours, and the linear speed of the end of the stirring impeller is 4m / s. The acid leaching pulp is fed into the filter press by the acid-resistant ...
Embodiment 2
[0044] The raw ore is iron-manganese polymetallic mine in Northwest Yunnan, China, with a grade of manganese of 2.21%, a grade of silver of 43.66g / t, and a grade of copper of 0.28%.
[0045]The raw ore is crushed by the jaw crusher and then enters the ball mill to grind to obtain the product. The grinding fineness is -0.074mm, accounting for 80%. Grinding products enter the ceramic filter, the filtrate returns to the grinding operation, the filter cake is added to the circulating acid leaching solution, the concentration is guaranteed to be 35%, and 17Kg of scrap iron scraps are added to each ton of raw ore and stirred evenly, and then 100Kg of concentrated sulfuric acid is added to ensure that each ton of raw ore The pH of the first tank is 3.5, and the strong stirring leaching is carried out. The stirring and leaching time is 5 hours, and the linear speed of the end of the stirring impeller is 5m / s. The acid leaching pulp is fed into the filter press by the acid-resistant sa...
Embodiment 3
[0048] The raw ore is a manganese polymetallic mine in Guangxi, China, with a grade of manganese of 4.91%, a grade of silver of 78.35g / t, and a grade of copper of 0.43%.
[0049] The raw ore is crushed by the jaw crusher and then enters the ball mill to grind to obtain the product. The grinding fineness is -0.074mm, accounting for 75%. Grinding products enter the ceramic filter, and the filtrate returns to the grinding operation. The filter cake is added to the circulating acid leaching solution, and the concentration is guaranteed to be 40%. First, 25Kg of scrap iron scraps are added to each ton of raw ore and stirred evenly, and then 150Kg of concentrated sulfuric acid is added to ensure that every ton of raw ore The pH of the first tank is 3, and the leaching with strong stirring is carried out. The stirring and leaching time is 4 hours, and the linear speed at the end of the stirring impeller is 4.3m / s. The acid leaching pulp is fed into the filter press by the acid-resist...
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