Novel domestic garbage incineration slag sorting technology

Abstract

The invention discloses a novel domestic garbage incineration slag sorting technology. The novel domestic garbage incineration slag sorting technology comprises the following steps of (1) feeding, (2)first-stage purification treatment, (3) first-stage grading treatment, (4) second-stage purification treatment, (5) first-stage magnetic separation treatment, (6) first-stage crushing treatment, (7)second-stage magnetic separation treatment, (8) iron forging treatment, (9) scrap iron dehydration, (10) third-stage purification treatment, (11) fourth-stage purification treatment, (12) second-stagegrading treatment, (13) third-stage magnetic separation treatment, (14) first-stage non-ferrous metal sorting, (15) fourth-stage magnetic separation treatment, (16) second-stage non-ferrous metal sorting, (17) fifth-stage magnetic separation treatment, (18) first-stage gravity sorting, (19) second-stage gravity sorting, (20) fine sand recovery treatment, (21) slag water sedimentation and (22) sediment filter pressing. According to the novel domestic garbage incineration slag sorting technology, the technology step configuration is optimized, by adding multiple manual purification technologiesand wet purification technologies, the purification efficiency is improved, and the dirt percentage of recycled aggregate is decreased.

Description

technical field [0001] The invention relates to the technical field of slag treatment in domestic waste incineration power plants, and in particular to a novel separation process for domestic waste incineration slag. 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 t...

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Problems solved by technology

[0007] To sum up, the current existing slag sorting process mainly has the following problems: (1) The existing sorting process is not perfect, the excessive crushing of slag is serious, and the equipment failure rate and system energy consumption are high, and the impurity removal efficiency, The sorting efficiency and metal recovery rate are low, and the impurity content of recycled aggregates is high; (2) The slag water recovery system is relatively primitive, with problems such as low degree of automation, large floor area, poor factory environment, and low recovery efficiency

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