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Steel slag stockpiling site covering structure and application method

A technology of covering structure and steel slag, applied in the fields of landfill technology, solid waste removal, etc., can solve the problems of labor and labor in transportation, lagging development and utilization technology, and high cost, and achieve convenient application, low cost, and improve cement strength. Effect

Active Publication Date: 2022-04-15
MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, gravel and sand are mainly used as covering materials for the exhaust layer, and the transportation is laborious and laborious, and the cost is relatively high
Due to the huge amount of steel slag stockpile and the current development and utilization technology is relatively lagging behind, there is an urgent need for an economical and effective barrier method for risk management and control

Method used

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  • Steel slag stockpiling site covering structure and application method

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Embodiment 1

[0028] The cover structure of a steel slag stockpiling site described in this embodiment is a base layer, a steel slag particle exhaust layer, a steel slag cement anti-seepage layer, a drainage layer, a protective layer and a vegetation layer from bottom to top. The base layer in the covering structure of the steel slag storage site adopts the nearby soil materials; the steel slag particle exhaust layer in the covering structure of the steel slag storage site uses granular steel slag as the filling material, and the average particle size of the steel slag is 5mm; the steel slag storage site The composition of the iron and steel slag cement anti-seepage layer is calculated by weight percentage: steel slag (12%), slag (36%), pumice (0%), waste rock (0%), tuff (0%), diatomite (0%), Opal (0%), Sintered Soil (0%), Burnt Shale (0%), Cinder (0%), Fly Ash (0%), Gangue Ash (0%), Limestone (41%), modified bentonite (10%) and gypsum (1%), among which the modified bentonite is applied to ...

Embodiment 2

[0032] The covering structure of a steel slag stockpiling site described in the embodiment includes, from bottom to top, a base layer, a steel slag particle exhaust layer, a steel slag cement anti-seepage layer, a drainage layer, a protective layer and a vegetation layer. The base layer in the covering structure of the steel slag storage site adopts the nearby soil materials; the steel slag particle exhaust layer in the covering structure of the steel slag storage site uses granular steel slag as the filling material, and the particle size of the steel slag is 7mm; the steel slag storage site The composition of the steel slag cement anti-seepage layer is calculated by weight percentage: steel slag (8%), slag (32%), pumice (1%), waste rock (1%), tuff (1%), diatomite ( 1%), opal (1%), sintered soil (1%), burnt shale (1%), cinder (1%), fly ash (1%), gangue ash (1%), limestone ( 42%), modified bentonite (5%) and gypsum (3%), of which the modified bentonite is a polymer-modified al...

Embodiment 3

[0036] The covering structure of a steel slag stockpiling site described in the embodiment includes, from bottom to top, a base layer, a steel slag particle exhaust layer, a steel slag cement anti-seepage layer, a drainage layer, a protective layer and a vegetation layer. The base layer in the covering structure of the steel slag storage site adopts the nearby soil materials; the steel slag particle exhaust layer in the covering structure of the steel slag storage site uses granular steel slag as the filling material, and the particle size of the steel slag is 10mm; the steel slag storage site The composition of steel slag cement anti-seepage layer is calculated by weight percentage: steel slag (1%), slag (9%), pumice (4%), waste rock (4%), tuff (4%), diatomite ( 4%), opal (4%), sintered soil (4%), burnt shale (4%), cinder (4%), fly ash (4%), gangue ash (4%), limestone ( 44%), modified bentonite (1%) and gypsum (5%), of which the modified bentonite is a polymer-modified alkali...

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Abstract

The invention discloses a covering structure for a steel slag stockpiling site. The covering structure sequentially comprises a base layer, a steel slag particle exhaust layer, a steel slag cement impermeable layer, a drainage layer, a protective layer and a vegetation layer from bottom to top. According to the structure, the steel slag particle exhaust layer and the steel slag cement impermeable layer adopt steel slag, mineral slag, a cementing material and the like as basic materials, harmless materials of the exhaust layer and the impermeable layer can be effectively replaced, the application cost is greatly reduced, meanwhile, the impermeability and the strength of the core covering layer of the covering structure are effectively improved, and the service life of the core covering layer is prolonged. And an effective and feasible technical reference is provided for covering the steel slag stockpiling field.

Description

technical field [0001] The invention relates to the technical field of preparation and application of environmentally friendly new materials, in particular to a covering structure and an application method of a steel slag storage yard. Background technique [0002] The annual output of crude steel in my country has increased year after year, and by 2020 it has exceeded 1 billion tons. The rapid growth of steel production has led to serious accumulation of smelting slag such as steel slag and slag, especially for areas with inconvenient water and land transportation conditions. These smelting slags are mainly alkaline, and if they are not comprehensively utilized or disposed of safely and effectively, they will cause serious damage to the surrounding ecological environment. [0003] my country proposes to promote the resource utilization of bulk industrial solid waste, among which smelting slag is the key target of bulk industrial solid waste rectification. In December 2020...

Claims

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Application Information

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IPC IPC(8): B09B1/00C04B28/00C04B111/27
CPCB09B1/004C04B28/00C04B2111/00612C04B2111/27C04B18/142C04B18/141C04B14/16C04B18/12C04B14/14C04B14/08C04B14/04C04B14/361C04B14/108C04B18/103Y02W30/30
Inventor 岳昌盛卢光华彭犇田玮刘诗诚夏春刘长波吴洁
Owner MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION
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