A kind of resource treatment method of copper smelting furnace soot
A treatment method and technology for a copper smelting furnace are applied in the directions of ammonium sulfite, process efficiency improvement, etc., which can solve the problems that the purity of the recovered product does not reach the expected effect, the recovery rate of valuable metals is not high, and the added value of the product is large. , low cost, high product purity
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Embodiment 1
[0038] A method for recycling copper smelting furnace soot, comprising the following steps:
[0039] (1) High-temperature alkali cooking, slurry the soot with water, add caustic soda, then put it into a sealed reaction kettle, raise the temperature to 145°C, react at this temperature for 75min, and then filter to obtain the filtrate and filter residue, add water to the soot After pulping, the solid content of the pulping material is 27%, the quality of the caustic soda added is 0.33 times of the soot quality, and the reaction process maintains the pressure in the reactor to be 1.4 atmospheres;
[0040] In this step, the amphoteric metals and oxides can be leached efficiently and quickly through the alkali boiling process under high temperature and high pressure. By adjusting the solid content of the slurry, the amount of alkali can be reduced, and the concentration of alkali can be increased at the same time to improve efficiency. Here Compared with leaching at a temperature l...
Embodiment 2
[0063] A method for recycling copper smelting furnace soot, comprising the following steps:
[0064] (1) high-temperature alkali cooking, adding water to the soot, adding caustic soda, then putting it into a sealed reaction kettle, heating up to a temperature of 145°C, reacting at this temperature for 90 minutes, and then filtering to obtain a filtrate and a filter residue;
[0065] (2) the filtrate is passed into hydrogen sulfide, the pH of the adjusted solution is 11, then stirred for 25min, then filtered to obtain the first filtrate and the first filter residue, the first filtrate is continued to pass through the hydrogen sulfide reaction until the pH of the solution is 7.8, Stop reaction then, filter, obtain the second filtrate and the second filter residue, add sulfuric acid to dissolve the second filter residue, then concentrate and crystallize to obtain industrial pure zinc sulfate;
[0066] (3) Add the filter residue obtained in step (1) to hydrochloric acid solution, ...
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