Comprehensive treatment device and method for zinc-accommodating solid waste of iron and steel enterprises
A solid waste and disposal device technology, applied in the direction of process efficiency improvement, blast furnace, furnace type, etc., can solve the problem of secondary pollution of solid waste, achieve the effect of recycling pollution, solving high investment cost, and realizing zero emission
Pending Publication Date: 2020-04-17
HEBEI IRON AND STEEL
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[0033]The comprehensive disposal device of zinc-containing solid waste in iron and steel enterprises of the present invention includes a material mixing processing part, a rotary kiln reduction dezincification and deleading part, a solid collection part, a gas treatment part and a waste heat recovery part.
[0034] The material mixing processing part includes a dry material storage silo 1, a wet material silo 2, a belt conveyor 17, a wet and dry mixer 3, an additive warehouse 4, a comprehensive mixer 5, and a granulator 6.
[0035] The rotary kiln reduction, dezincification and deleading part is completed by the rotary kiln 7.
[0036] The solid collection part includes secondary ferrous resource water cooling tank 13 , primary screen machine 14 , sintering tank 15 , blast furnace or steelmaking tank 16 , crusher 18 , and secondary screen machine 19 .
[0037] The gas treatment and waste heat recovery part includes a settling chamber 8 , a waste heat boiler 9 , a desulfurizati...
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Abstract
The invention discloses a comprehensive treatment device and method for zinc-accommodating solid waste of iron and steel enterprises, belongs to the technical field of metallurgical solid waste treatment equipment and methods, and is used for treating useful solid waste of the iron and steel enterprises. The technical scheme is as follows: a part of dry silos and wet silos are connected with a dry-wet mixer; discharge ports of the dry silos, the dry-wet mixer and an additive silo are respectively connected with a comprehensive mixer; the comprehensive mixer is connected with a granulator; thegranulator is connected with a feeding hole of a rotary kiln; a solid material outlet of a kiln head of the rotary kiln is connected with a secondary iron-accommodating resource water cooling tank; the secondary iron-accommodating resource water cooling tank is connected with a screening machine; an undersize discharge port and an oversize discharge port of the screening machine are connected witha sintered material trough and a blast furnace or a steelmaking trough respectively; the kiln tail of the rotary kiln is sequentially connected with a settling chamber, a waste heat boiler, a desulfurization and denitrification tower and a bag-type dust collector; and the bag-type dust collector is connected with a chimney. Zero emission of solid waste can be achieved, resources are recycled, andpollution to the environment is avoided.
Description
technical field [0001] The invention relates to a device and a method for processing zinc-containing solid waste in iron and steel enterprises or other valuable solid waste, and belongs to the technical field of metallurgical solid waste processing equipment and methods. Background technique [0002] There are two main methods for dealing with zinc-containing solid waste in foreign countries. One is to use blast furnace or shaft furnace for disposal, use sintering to make agglomerates or briquettes, and blast furnace or shaft furnace dust removal system to recover zinc oxide; the other is to turn the bottom The application of furnace technology in the field of zinc-containing solid waste recycling has been introduced in China, but the implementation effect is not satisfactory. [0003] Based on the adverse effects of zinc-containing solid waste on the iron and steel production process, with the help of foreign advanced research results on the disposal of zinc-containing soli...
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IPC IPC(8): C22B19/30C22B19/20C22B19/38C22B7/00C22B1/248C21B5/00
CPCC22B19/30C22B19/20C22B19/38C22B7/001C22B1/248C21B5/00Y02P10/20
Inventor 金永龙张海宁单立东王倩李杰宋丽英时越
Owner HEBEI IRON AND STEEL