Waste incineration slag treatment process
A technology for waste incineration slag and treatment process, applied in the field of waste treatment, can solve the problems of complex slag composition and many debris, and achieve the effects of increasing the screening rate, the screening accuracy and the screening rate.
Pending Publication Date: 2022-04-05
新环能(晋江)再生资源有限公司
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Problems solved by technology
However, due to the complex composition of slag and many sundries, it is necessary to effectively sort it, remove the sundries, sort out the metals in it, and obtain various recycled aggregates and recycled sand products in order to realize comprehensive utilization.
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[0030] The present invention will be further described below in conjunction with the accompanying drawings.
[0031] see Figure 1 to Figure 6 , the invention provides waste incineration slag treatment process, comprising the following steps:
[0032] Step S1: The slag is fed through the first roller sieve machine to screen out the large particles on the sieve and the small particles under the sieve;
[0033] Step S2: Carry out magnetic separation of large particles to obtain magnetically conductive metals, and proceed to step S31; after the large particles left by magnetic separation are crushed by the first crusher, they are magnetically separated with small particles, and the magnetically conductive metals are selected for processing. Step S31; proceed to step S32 for the remaining material, which is a non-magnetic material;
[0034] Step S31: After the magnetic conductive metal is mixed with circulating water, it is crushed by the fourth crusher, screened by the second r...
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The invention relates to a waste incineration slag treatment technology. The technology comprises the steps that S1, large particles and small particles are screened out from fed slag through a first roller screen machine; s2, magnetically separating out magnetic conductive metal; s31, the remaining magnetic conductive metal is crushed and screened through a second roller screen machine; s32, residual substances obtained after magnetic separation are crushed; carrying out magnetic separation on the magnetic conductive metal; s4, residual materials are subjected to gravity screening through a large jigger; s51, screening other substances in the step S4 through a third roller screen machine to remove impurities; s52, circulating water discharged by the large jigger is subjected to gravity screening again through the small jigger; s61, carrying out sand-water separation on the oversize product in the step S51 and other substances in the step S52, and screening the separated sand substances again by a fourth roller screen machine; s62, separating fine metal particles from the circulating water in the step S52 and the undersize products in the step S31 and the step S51; s71, circulating water separated in S61 and S62 is subjected to precipitation and filtration; and S72, non-ferrous metals are separated from the oversize sandy material flow obtained in the step S61. The screening rate of magnetic metal and non-ferrous metal is increased, and silt, non-ferrous metal and magnetic metal are collected in a classified mode.
Description
technical field [0001] The invention relates to the technical field of garbage treatment, in particular to a garbage incineration slag treatment process. Background technique [0002] In order to cope with the severe situation of "garbage siege", more and more domestic waste incineration power plants are being built in China to "reduce, harmless and recycle" domestic waste. However, after a large amount of domestic waste is incinerated, slag, which accounts for 20% to 30% of the total waste, will be produced. With the increase in the number of domestic waste incineration power plants, the amount of slag produced is also increasing, and the landfill cost of slag is also increasing year by year, so the comprehensive utilization of slag is gradually put on the agenda. However, because the composition of the slag is complex and there are many sundries, it must be effectively sorted to remove the sundries, sort out the metals in it, and obtain various recycled aggregates and rec...
Claims
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IPC IPC(8): B09B3/00B09B5/00
Inventor 林娜
Owner 新环能(晋江)再生资源有限公司