Garbage incinerator slag treatment process

Abstract

The invention discloses a garbage incinerator slag treatment process. Furnace slag is conveyed to a drum screen for screening through a feeding hopper, the screened out insufficiently-burnt combustible materials return to a plant to be used as fuel, and the screened out large furnace slag is crushed by a crusher; the screened and crushed slag is gathered and conveyed to a jigging machine through aconveying belt, a magnetic separator is installed above the conveying belt, and black metal is extracted from the furnace slag through magnetic separation in the furnace slag conveying process; particulate matters and sand in the furnace slag are separated by the jigging machine; the separated solid granular slag is pressed into bloated bricks through a water filtering filter press; and the sandis subjected to water-sand separation through a water-sand separator, the separated water is recycled for cyclic utilization, the sand is further dewatered through a dewatering machine and then is subjected to separation through an eddy current separator to separate nonferrous metals from the sand, and finally the sand is sent into a sand field to be used. According to the process, the slag is subjected to multi-stage separation treatment, and thus the recyclable metal and sand are separated; and the solid granular slag is made into the bloated bricks for building, and thus economical and environment-friendly effects are achieved.

Description

technical field [0001] The invention relates to a slag treatment process, in particular to a garbage incineration slag treatment process. Background technique [0002] Using domestic waste incineration power generation technology, municipal solid waste will produce slag after being incinerated at a high temperature of 1000 °C. The volume of the slag is about 20% to 30% of the original domestic waste. The color of domestic waste incineration slag is dark brown; the particle size is different, the composition is complex, and the main components are Ca, Si, Na, K, Fe, Al and some heavy metals. Although the slag has been sintered, it is mixed with a large number of early impurities during the factory process, such as glass, iron sheets, bottle caps, and iron and copper metals, such as iron nails, iron wires, iron sheets, and copper nuts. Due to the complexity of the composition of waste incineration slag, the treatment of slag is very difficult, and there is no suitable treatm...

AI Technical Summary

Problems solved by technology

Due to the complexity of the composition of waste incineration slag, slag treatment is very difficult, and there is no suitable treatment method for waste incineration slag at present

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