Method of utilizing zinc hydro-metallurgy oxygen pressure acid leaching slag to prepare demercuration adsorbent
A technology of oxygen pressure acid leaching and wet zinc smelting, which is applied in the field of adsorption materials, can solve the problems of difficult application, high difficulty, and high quotation cost, and achieve the effects of low cost, reduced environmental hazards, and simple operation
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[0036] Example 1:
[0037] A method for preparing mercury removal adsorbent by using hydrometallurgical zinc smelting oxygen pressure acid leaching residue, including the following steps:
[0038] (1) Pass the finely ground zinc oxide ore (zinc oxide concentrate) through a 100 mesh sieve to obtain zinc oxide ore particles with a particle size of less than 150μm, and then take 40g, 60g, 80g, 100g, 120g, 140g, and 160g and 180g are mixed uniformly with 20g of pressurized oxidation acid leaching residue (ie high sulfur residue) to obtain different premixes;
[0039] (2) Prepare a mixed solution of ethanol and water according to 1:1, and add sodium sulfide to the mixed solution of ethanol and water to make S in the solution 2- The ion concentration is 0.02mol / L to obtain a sulfide salt solution;
[0040] (3) Mix the different premixes obtained in step (1) with the sulfide salt solution obtained in step (2), and control the mass-solid-liquid ratio to 0.3:1, ultrasonically stir for 10 minut...
Example Embodiment
[0045] Example 2:
[0046] A method for preparing mercury removal adsorbent by using hydrometallurgical zinc smelting oxygen pressure acid leaching residue, including the following steps:
[0047] (1) Pass the finely ground zinc oxide ore (zinc oxide concentrate) through a 100 mesh sieve to obtain zinc oxide ore particles with a particle size of less than 150μm, and then take 40g, 60g, 80g, 100g, 120g, 140g, and 160g and 180g and 20g of pressurized oxidation acid leaching residues obtained after hot filtration (that is, high-sulfur residues after hot filtration) are uniformly mixed to obtain different premixes;
[0048] (2)-(4) are the same as steps (2)-(4) of Example 1.
[0049] In the high-sulfur residue after hot filtration, the mass fraction of zinc is 10.24%, and the mass fraction of elemental sulfur is 38.63%.
[0050] Take the prepared adsorbent for mercury removal, place it in a fixed bed, and evaluate the performance of mercury removal from flue gas. The specific process is: ...
Example Embodiment
[0052] Example 3:
[0053] A method for preparing mercury removal adsorbent by using hydrometallurgical zinc smelting oxygen pressure acid leaching residue, including the following steps:
[0054] (1) Pass the finely ground zinc oxide ore (zinc oxide concentrate) through a 100-mesh sieve to obtain zinc oxide ore particles with a particle size of less than 150μm, and then take 100g of zinc oxide ore and 20g of pressurized oxidation acid leaching residue and mix uniformly to obtain Premix
[0055] (2) Prepare a mixed solution of ethanol and water according to 1:1, and add sodium sulfide to the mixed solution of ethanol and water to make S in the solution 2- The ion concentration is 0.02mol / L to obtain a sulfide salt solution;
[0056] (3) Mix the premix obtained in step (1) with the sulfide salt solution obtained in step (2), and control the mass-solid-liquid ratio to 0.3:1, ultrasonically stir for 10 minutes to make the solution a suspension, and then suspend the The turbid liquid was...
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