Method and system for stabilizing solid waste with different particle sizes
A solid waste stabilization technology, applied to the removal of solid waste, etc., can solve the problems of high cost of equipment manufacturing and maintenance, hidden safety hazards, long time, etc., and achieve the effect of improving carbonation efficiency
Inactive Publication Date: 2019-08-16
蒋本基
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Problems solved by technology
[0005] However, some solid waste stabilization technologies, such as dumping inside or outside the factory, are likely to cause dust and environmental pollution; at the same time, some stabilization technologies need to consume additional resources (such as steam) or operate in high-temperature and high-pressure environments. Equipment manufacturing and maintenance costs are high, and high-voltage operation may cause safety hazards
[0006] In addition, some solid waste stabilization technologies take a long time or require a large footprint
Taking the outdoor natural health preservation method as an example, the solid waste is piled outdoors, and the water vapor and carbon dioxide in the atmosphere are used to generate hydration reactions. The stabilization time required is long, and a large treatment area is required. difficulty
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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0025] refer to figure 1 and figure 2 One embodiment of the method for stabilizing solid waste with different particle sizes in the present invention comprises the following steps:
[0026] First, as in step S01, solid waste with different particle sizes and a liquid are mixed to form a slurry, and the slurry is injected into a slurry reaction tank 2. The solid-liquid ratio of the slurry should be between 1:5 and 1 : 30 rooms. In this embodiment, the solid wastes of different particle sizes include slag, fly ash, bottom ash, dust collection ash and other components, and the slag can be blast furnace slag, converter slag, refining slag, desulfurization slag and electric arc furnace One of them. In addition, the liquid may be one of deionized water, tap water and process wastewater or any combination thereof.
[0027] Then, as step S02, the slurry...
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A method for stabilizing solid waste in different particle sizes comprises the steps as follows: the solid waste in the different particle sizes and a liquid are mixed, and then slurry is formed and is injected into a slurry reaction tank; small-particle-size solid waste slurry is separated from the slurry through flotation by the aid of a first gas in the slurry reaction tank; the small-particle-size solid waste slurry is injected into a supergravity reaction tank and is stabilized by the aid of a second gas in the supergravity reaction tank; and small-particle-size solid waste and the liquid of the small-particle-size solid waste slurry are subjected to solid-liquid separation by the aid of solid-liquid separation equipment, and thus the stabilized small-particle-size solid waste is obtained.
Description
technical field [0001] The invention relates to a solid waste treatment method, in particular to a method and system for stabilizing solid waste with different particle sizes. Background technique [0002] Since the composition of solid waste produced by steelmaking is very similar to natural sand and gravel, it includes slag, fly ash, bottom ash and dust collection ash, etc., and has excellent physical and chemical properties (such as: wear resistance, high temperature resistance, and Corrosion, etc.), it is quite suitable for civil and construction engineering, so it is economical; however, taking converter stone as an example, it contains unstable components, including: free calcium oxide (Free-CaO) and calcium hydroxide (Ca(OH ) 2 ), etc., need to be properly stabilized to make the application feasible, otherwise it will easily cause high alkalinity and back-swelling problems, resulting in serious safety problems such as subgrade swelling and cracking or foundation loos...
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IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00
Inventor 蒋本基潘述元张怡怡陈奕宏
Owner 蒋本基