Step recycling method for metallic aluminum in aluminum ash
A cascade recycling and metal aluminum technology, applied in the direction of process efficiency improvement, solid separation, etc., can solve the problems of difficult smelting and low purity of aluminum powder, and achieve the effect of improving metal recovery rate and high metal recovery rate
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Embodiment 1
[0030] Pre-screen 1kg of aluminum ash with a 10mm sieve to obtain aluminum ash on the sieve and aluminum ash under the sieve, crush the aluminum ash on the sieve with an impact crusher, and then check and sieve it with a 10mm sieve to obtain metallic aluminum Granules and aluminum ash under the sieve, the metal aluminum content of the metal aluminum granules is 96.01%; check the sieved aluminum ash and the pre-screened aluminum ash for wet ball milling, the ball mill slurry is classified through a 0.5mm fine sieve, The grading particle size is 43 μm, and large-grain metal aluminum flakes and fine-grain slurry are obtained. The metal aluminum content of large-grain metal aluminum flakes is 93.24%; the fine-grain slurry is re-selected to obtain fine-grain metal aluminum powder and tailings. The metal aluminum content of the metal aluminum powder is 64.21%; the tailings are dehydrated to obtain filtrate and filter residue; the filtrate is recycled and enriched and evaporated to re...
Embodiment 2
[0032] Pre-screen 1kg of aluminum ash with a 2mm sieve to obtain aluminum ash on the sieve and aluminum ash under the sieve, crush the aluminum ash on the sieve with an impact crusher, and then check and sieve it with a 2mm sieve to obtain metallic aluminum Granules and aluminum ash under the sieve, the metal aluminum content of the metal aluminum granules is 95.11%; check the sieved aluminum ash and the pre-screened aluminum ash for wet ball milling, and the ball mill slurry is classified through a 0.075mm fine sieve, The grading particle size is 500 μm, and large-grain metal aluminum flakes and fine-grain slurry are obtained. The metal aluminum content of large-grain metal aluminum flakes is 94.24%; the fine-grain slurry is re-selected to obtain fine-grain metal aluminum powder and tailings, and The metal aluminum content of the metal aluminum powder is 54.31%; the tailings are dehydrated to obtain filtrate and filter residue; the filtrate is recycled and enriched and evapora...
Embodiment 3
[0034] Pre-screen 1kg of aluminum ash with a 100mm sieve to obtain aluminum ash on the sieve and aluminum ash under the sieve, crush the aluminum ash on the sieve with an impact crusher, and then check and sieve it with a 100mm sieve to obtain metallic aluminum Granules and aluminum ash under the sieve, the metal aluminum content of the metal aluminum granules is 96.12%; check the screened aluminum ash and the pre-screened aluminum ash for wet ball milling, the ball mill slurry is classified by a spiral classifier, and the graded The particle size is 200 μm, to obtain large-grain metal aluminum flakes and fine-grain slurry, the metal aluminum content of the large-grain metal aluminum flakes is 93.33%; the fine-grain slurry is re-selected to obtain fine-grain metal aluminum powder and tailings, fine-grain metal The metal aluminum content of the aluminum powder is 74.31%; the tailings are dehydrated to obtain filtrate and filter residue; the filtrate is recycled and enriched and ...
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