Synergistic recycling method for household garbage incineration fly ash and electrolytic manganese slag
A technology of domestic waste incineration and electrolytic manganese slag, applied in cement production, ammonia preparation/separation, etc., to achieve the effect of reducing separation pressure, reducing equipment investment and operating energy consumption, and having strong applicability
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Embodiment 1
[0044] Example 1: Wet product electrolytic manganese slag, containing 23.1% moisture: tested after drying, it contains environmental pollutant elements such as Mn: 3.1642%, Pb: 0.0015%, As: 0.0012%, Cu: 0.0052%, Zn: 0.0562% ;Dried electrolytic manganese slag was soaked in tap water with twice the quality for 96 hours, and the soaking solution was detected by atomic absorption spectrometer: Mn: 2064mg / L, Pb: 0.5150mg / L, As: 0.0011mg / L, Cu: 0.0521mg / L, ammonia nitrogen 687.16mg / L.
[0045] Domestic waste incineration fly ash refers to the fly ash obtained by municipal solid waste power plants through boiler combustion and tail gas dust removal. The fly ash contains Cu: 1277.14mg / Kg, Zn: 2904.40mg / Kg, Pb: 475.97mg / Kg, Cr: 294.18mg / Kg, Cd: 60.54mg / Kg, Cl: 6.64% (mass ratio).
[0046] The wet product electrolytic manganese slag is continuously fed into the special dispersing equipment with a cutting and scraping disperser at 0.2 tons / hour and the dry domestic waste incineration fl...
Embodiment 2
[0054] The physical and chemical properties of the raw materials are the same as in Example 1, only the wet electrolytic manganese slag contains 23.1% of moisture. Wet electrolytic manganese slag is continuously mixed with 0.2 tons of electrolytic manganese slag and 80 kg / hour of dry domestic waste incineration fly ash into the special dispersion equipment with cutting and scraping disperser to maintain continuous dispersed powder state.
[0055] The dispersed material enters the slaking reactor continuously at about 0.25 tons / hour and 18kg / hour of quicklime powder to further disperse and implement the slaking process; the leachable metal ions and other heavy metal ions in the material are solidified, and at the same time, the Ammonia nitrogen is effectively released and removed. The curing temperature is 95°C, and the storage period of the material in the curing device is 54 minutes.
[0056] After the aging is completed, the qualified materials are obtained by screening and...
Embodiment 3
[0062] The physical and chemical properties of the raw materials are the same as in Example 1, only the wet product electrolytic manganese slag is dried at about 0.2 tons / hour. Domestic waste incineration fly ash and the remaining unqualified products sieved in Example 1 are continuously fed at a rate of 1:1 with a mixture of 70 kg / hour. The special dispersing equipment of the type disperser disperses and fully mixes to maintain a continuously dispersed powder state.
[0063] The dispersed material enters the slaking reactor continuously at about 0.25 tons / hour and 14kg / hour of quicklime powder to further disperse and implement the slaking process; the leachable metal ions and other heavy metal ions in the material are solidified, and at the same time, the Ammonia nitrogen is effectively released and removed. The curing temperature is 98°C, and the storage period of the material in the curing device is 55 minutes.
[0064] After the aging is completed, the qualified materials...
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