Chemical quantitative analysis method for occurrence state of silver in ferro-manganese oxide ore

[0050] This embodiment provides a chemical quantitative analysis method for the silver occurrence state in iron-manganese oxide ore, and the process is as follows.

[0051] (1) Weigh 500g iron-manganese oxide ore (an iron-manganese silver oxide mine in northwest Yunnan), crush it to -0.074mm and account for 100%, and use the heap cone quartering method to mix and set aside;

[0052] (2) Weigh 2 g of the crushed ore in step (1), place it in a 100 mL beaker, and add 50 mL of concentrated ammonia water (15%, if not specified, % refers to mass fraction) to prepare a concentration of 150 g / L Ammonium carbonate solution was shaken at normal temperature for 2 hours, and the filter residue was collected after filtration, and the filtrate was measured by atomic absorption spectrometer for the dispersed silver in malachite and smithsonite;

[0053] (3) add 50mL of 50g / L hydroxylamine hydrochloride-150g / L sodium chloride solution to the filter residue collected in the previous step fo

[0059] This embodiment provides a chemical quantitative analysis method for the silver occurrence state in iron-manganese oxide ore, and the process is as follows.

[0060] (1) Weigh 500g iron-manganese oxide ore (a manganese-silver mine in Guangxi), pulverize to -0.074mm and account for 100%, and use heap cone quartering method to mix and set aside;

[0061] (2) Take by weighing 2 g of the crushed ore in step (1), place it in a 100 mL beaker, add 50 mL of concentrated ammonia water (28%) to prepare an ammonium carbonate solution of 100 g / L, vibrate at room temperature for 2 hours, and collect the filter residue after filtration , the filtrate adopts atomic absorption spectrometer to measure the dispersed silver in malachite and smithsonite;

[0062] (3) add 50mL of 40g / L hydroxylamine hydrochloride-100g / L sodium chloride solution to the filter residue collected in the previous step for leaching, filter after shaking for 15min, and wash with 10g / L hydroxylamine hydrochlor

[0068] This embodiment provides a chemical quantitative analysis method for the silver occurrence state in iron-manganese oxide ore, and the process is as follows.

[0069] (1) Weigh 500g iron-manganese oxide ore (a manganese-silver mine in Guangxi), pulverize to -0.074mm and account for 100%, and use heap cone quartering method to mix and set aside;

[0070] (2) Take by weighing 2 g of the crushed ore in step (1), place it in a 100 mL beaker, add 50 mL of concentrated ammonia water (15%) to prepare an ammonium carbonate solution of 200 g / L, vibrate at room temperature for 2 hours, and collect the filter residue after filtration , the filtrate adopts atomic absorption spectrometer to measure the dispersed silver in malachite and smithsonite;

[0071] (3) add 50mL of 60g / L hydroxylamine hydrochloride-200g / L sodium chloride solution to the filter residue collected in the previous step for leaching, filter after shaking for 15min, and wash with 10g / L hydroxylamine hydrochlor