Process for municipal and metallurgical refractory solid waste synergic resource utilization
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A difficult-to-dispose and resource-recycling technology, applied in the field of solid waste resource utilization, can solve the problems of restricting large-scale application and development, high volatility, consumption price, etc.
Inactive Publication Date: 2019-03-05
ZHONGYE-CHANGTIAN INT ENG CO LTD +1
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Compared with other compounds of the corresponding metals, various metal chlorides mostly have properties such as low melting point, high volatility, and easy reducibility. According to the difference in properties of chlorides, metal separation, enrichment, extraction and extraction can be effectively realized respectively. The purpose of refining, but the chlorination roasting process needs to consume expensive chlorinating agents, which limits its large-scale application and development
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[0126] According to the first embodiment provided by the present invention, a system for collaborative resource utilization of municipal and metallurgical refractory solid waste is provided.
[0127] A system for collaborative resource utilization of municipal and metallurgical refractory solid waste, the system includes:
[0128] 1) Batching device: the batching device includes silo 1;
[0129] 2) Mixing device 4: the discharge port of the silo 1 is connected to the feed port of the mixing device 4 through the first mineral material conveying device G1;
[0130] 3) Moisture mill 5: the discharge port of the mixing device 4 is connected to the feed port of the moist mill 5 through the third mineral material conveying device G3;
[0131] 4) Pelletizer 6: the discharge port of the moistening mill 5 is connected to the feed port of the pelletizer 6 through the fourth mineral material conveying device G4;
[0132] 5) Drying device 7: the discharge port of the pelletizer 6 is con...
Embodiment 1
[0203] Such as figure 1 with figure 2 As shown, a system for collaborative resource utilization of municipal and metallurgical refractory solid waste, the system includes:
[0204] 1) Batching device: The batching device includes a silo 1, a vibrating bucket 2, and a feeder 3. The silo 1 includes a garbage incineration fly ash bin 101 and a metallurgical dust bin 102. Below the discharge port of the dust bin 102, the feeder 3 is arranged below the discharge port of the vibrating bucket 2;
[0205] 2) Mixing device 4: the discharge port of the feeder 3 is connected to the feed port of the mixing device 4 through the first mineral material conveying device G1;
[0206] 3) Moisture mill 5: the discharge port of the mixing device 4 is connected to the feed port of the moist mill 5 through the third mineral material conveying device G3;
[0207] 4) Pelletizer 6: the discharge port of the moistening mill 5 is connected to the feed port of the pelletizer 6 through the fourth mine...
Embodiment 2
[0213] Repeat Example 1, except that the system further includes: 8) cooling device 10 . The discharge port of the roasting device 9 is connected with the feed port of the cooling device 10 through the eighth mineral material conveying device G8. The discharge port of the cooling device 10 is connected to the blast furnace ironmaking workshop through the ninth mineral material conveying device G9.
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Abstract
The invention discloses a process for municipal and metallurgical refractory solid waste synergic resource utilization. The process comprises the following steps that 1) distribution is performed, wherein garbage incineration fly ash in a garbage incineration fly ash bin and metallurgical dust in a metallurgical dust bin pass through a vibration hopper and a feeding machine, and then are conveyedto a mixing device; 2) mixing is performed, wherein mixing is performed by the mixing device, and then mixed powder is obtained; 3) damp grinding is performed, wherein damp grinding is performed on the mixed powder, and the mixed powder subjected to damp grinding is obtained; and 4) pelletizing is performed, wherein pelletizing is performed on the mixed powder subjected to damp grinding, and powder pellets are obtained; 5) drying is performed, wherein drying is performed on the powder pellets, and the dried powder pellets are obtained; 6) preheating is performed, wherein preheating is performed on the dried powder pellets, and the preheated powder pellets are obtained; and 7) roasting is performed, wherein high-temperature chlorination roasting is performed on the preheated powder pellets.According to the process, the garbage incineration fly ash is used as a chlorinating agent, the heavy metal metallurgy dust containing lead, zinc and the like is treated by adopting the high-temperature chlorination roasting process, a flue gas treatment process, a valuable metal recovery process and other processes are adopted.
Description
technical field [0001] The present invention relates to the field of resource utilization of solid waste, in particular to a process for collaborative resource utilization of municipal and metallurgical refractory solid waste, or a process for resource utilization of waste incineration fly ash and iron and steel metallurgical dust. It mainly solves the environmental and social problems caused by improper disposal of waste incineration fly ash and metallurgical solid waste. Background technique [0002] With the accelerated development of urbanization in our country, the output of urban waste in our country continues to increase. At present, waste treatment mainly includes landfill, incineration and composting. Among them, incineration treatment has the advantages of volume reduction and volume reduction, and can also generate electricity. It has been widely used in recent years. However, fly ash, a by-product of waste incineration, is a dangerous waste. Because fly ash is r...
Claims
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Application Information
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