Method for recovering sulfur from zinc oxygen pressure leached high-sulfur slag
A leaching and high-sulfur technology, applied in chemical instruments and methods, sulfur compounds, inorganic chemistry, etc., can solve the problems of low recovery rate of elemental sulfur, low grade of sulfur concentrate, and low recovery rate of sulfur, and achieve high recovery rate, The effect of reducing stockpiles and efficient recycling
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Embodiment 1
[0035] This embodiment provides a method for zinc oxygen pressure leaching of high-sulfur slag to recover sulfur, comprising the following steps:
[0036] (1) Zinc oxygen pressure leaching high-sulfur slag containing sulfur, zinc, lead, iron, silver and other elements is added to the flotation cell, mixed with water in a certain proportion, and the zinc oxygen pressure leaching high-sulfur slag with a concentration of 20% is obtained Slag pulp, which contains 46.21% sulfur, 4.31% zinc, 1.92% lead, 15.40% iron, and 220g / t silver;
[0037] (2) Carry out one section of blank roughing in the zinc-oxygen pressure leaching high-sulfur slag slurry prepared in step (1), control the rotating speed and maintain the foam layer thickness, obtain roughing I concentrate and roughing I tailings;
[0038](3) Add lime 5kg / t to the roughing tailings prepared in step (2), carry out two stages of roughing, add inhibitor, collector and foaming agent to roughing, wherein roughing II adopts sodium s...
Embodiment 2
[0041] This embodiment provides a method for zinc oxygen pressure leaching of high-sulfur slag to recover sulfur, comprising the following steps:
[0042] (1) Zinc oxygen pressure leaching high-sulfur slag containing elements such as sulfur, zinc, lead, iron, silver, etc., is added to the flotation cell, mixed with water according to a certain ratio, and the zinc oxygen pressure leaching high-sulfur slag with a concentration of 32% is obtained Slag pulp, which contains 56.68% of sulfur, 2.28% of zinc, 2.32% of lead, 12.86% of iron, and 140g / t of silver;
[0043] (2) Carry out one section of blank roughing in the zinc-oxygen pressure leaching high-sulfur slag slurry prepared in step (1), control the rotating speed and maintain the foam layer thickness, obtain roughing I concentrate and roughing I tailings;
[0044] (3) Add lime 7kg / t to the roughing tailings prepared in step (2), carry out two stages of roughing, add inhibitor, collector and foaming agent in the roughing proces...
Embodiment 3
[0047] The invention provides a method for recovering sulfur from zinc-oxygen pressure leaching of high-sulfur slag, comprising the following steps:
[0048] (1) Put the zinc oxygen pressure leaching high-sulfur slag containing sulfur, zinc, lead, iron, silver and other elements into the flotation tank, and mix it with water in a certain proportion to obtain a zinc oxygen pressure leaching high-sulfur slag with a concentration of 40%. Slag pulp, which contains 33.40% sulfur, 3.08% zinc, 1.90% lead, 10.23% iron, and 124g / t silver;
[0049] (2) Carry out one section of blank roughing in the zinc-oxygen pressure leaching high-sulfur slag slurry prepared in step (1), control the rotating speed and maintain the foam layer thickness, obtain roughing I concentrate and roughing I tailings;
[0050] (3) add lime 5kg / t in the roughing tailings prepared in step (2), carry out two sections of roughing, add inhibitor, collector and foaming agent in the roughing process, wherein roughing 1 ...
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