Method for solid-liquid separation and ammonia recovery of ammonia-containing leaching slurry

The invention discloses a method for solid-liquid separation and ammonia recovery of ammonia-containing leached slurry, which comprises the following steps: a, continuously adding the ammonia-containing leached slurry into a closed tilting-pan vacuum filter for solid-liquid separation, and carrying out countercurrent washing on residues for 3-5 times, with the addition amount of washing water and the liquid-solid ratio of the residues being (0.3-0.5): 1 (mL: g), and the washing water being intermittently and instantaneously added, the residue filter disc is in a non-vacuum pumping state during adding; b, carrying out suction filtration on the ammonia-containing gas in the closed tilting-pan vacuum filter through a vacuum pump, feeding the ammonia-containing gas into a spraying system, and cooling and absorbing the ammonia-containing gas through the spraying system; and c, carrying out suction filtration on unabsorbed ammonia-containing gas in the spraying system through a vacuum pump, and further returning th