Disposal process of zinc-containing dust and slag solid waste
A technology for solid waste and dust sludge, which is applied in the field of combined pyrotechnic and wet process for the disposal of zinc-containing dust and sludge solid waste, which can solve the problems of poor economic benefits and single treatment range of zinc-containing dust and sludge waste problems, to achieve maximum economic benefits, rational disposal, and increase the effect of economic value
Active Publication Date: 2021-02-02
CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD
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Problems solved by technology
[0004] In view of this, the present invention provides a zinc-containing dust and sludge solid waste disposal method in order to solve the problems of single zinc-containing dust and sludge waste treatment range and poor economic benefits in the traditional zinc-containing dust and sludge solid waste disposal method. Disposal process
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[0017] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0018] Such as figure 1 A kind of disposal process of zinc-containing dust slag solid waste shown, comprises the following steps:
[0019] A. Classify and plan the zinc-containing dust and sludge, and divide the zinc-containing dust and sludge into a class of zinc-containing dust and sludge with a zinc content ≥ 5% and a second class of zinc-containing dust and sludge with a zinc content <5%. Class II zinc-containing dust and sludge ...
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The invention belongs to the technical field of metallurgical solid waste treatment, and relates to a process for disposing of zinc-containing dust and sludge solid waste. First, the zinc-containing dust and sludge produced in the production process of metallurgical enterprises is classified and planned, and the zinc content is greater than or equal to 5%. Wet treatment process, the zinc content <5% enters the pyroprocessing process, the residue produced by the wet treatment process enters the pyroprocessing process again, and the secondary zinc oxide powder (zinc oxide content ≤ 60%) produced by the pyroprocessing process is again Entering the wet disposal process, through the classification and planning of the original zinc-containing dust and sludge, according to the difference in zinc content, wet and pyrotechnic joint disposal are used respectively to make overall planning; at the same time, the unusable or low-value products of wet and pyrotechnics are Then carry out cross-joint deep-level disposal, complement each other, and more reasonably dispose of zinc-containing dust and sludge waste in metallurgical enterprises, while achieving greater economic benefits.
Description
technical field [0001] The invention belongs to the technical field of metallurgical solid waste treatment, and relates to a process for disposing of zinc-containing dust, sludge, and solid waste, in particular to a process for disposing zinc-containing dust, sludge, and solid waste through a combination of fire and wet methods. Background technique [0002] Iron and steel / non-ferrous metallurgical enterprises will produce dust, mud, slag and other solid wastes with different zinc content in each process in actual production. In the traditional disposal process, the wet method is usually suitable for the treatment of zinc-containing dust and sludge waste with a zinc content of ≥5%, and the pyrolysis method is usually suitable for the disposal of zinc-containing dust and sludge waste with a zinc content of <5%. The wet process includes acid method, alkali method, ammonia method, etc., fire method includes rotary hearth furnace, rotary kiln, etc. [0003] In the existing d...
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IPC IPC(8): C22B7/00C22B7/04C22B7/02C22B19/30C22B19/20C22B19/04
CPCC22B7/00C22B7/001C22B7/006C22B7/02C22B7/04C22B19/04C22B19/20C22B19/30Y02P10/20
Inventor 罗磊罗宝龙雍海泉
Owner CHONGQING CISDI THERMAL & ENVIRONMENTAL ENG CO LTD