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Application of carbide slag solid wastes as raw materials for preparing mineral filling gel material, filling gel material and filling material

A technology of gel material and filling glue, which is applied in the direction of cement production, etc., can solve the problems of insufficient resource utilization of carbide slag and low effective utilization rate, and achieve the effect of dense structure, reduced porosity and good fluidity

Inactive Publication Date: 2017-05-24
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide carbide slag solid waste as a raw material for preparing mine filling gel material, use carbide slag to stimulate the activity of fly ash and blast furnace slag, and realize the recycling of solid waste such as carbide slag Utilization and high-efficiency filling of mines solve the problems of insufficient resource utilization methods and low effective utilization rate in the recycling of carbide slag in the prior art

Method used

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  • Application of carbide slag solid wastes as raw materials for preparing mineral filling gel material, filling gel material and filling material
  • Application of carbide slag solid wastes as raw materials for preparing mineral filling gel material, filling gel material and filling material
  • Application of carbide slag solid wastes as raw materials for preparing mineral filling gel material, filling gel material and filling material

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preparation example Construction

[0071] The present invention has no special limitation on the preparation method of the mine-used filling cementitious material, and it is enough to adopt the technical scheme prepared by the compound well known to those skilled in the art. Specifically, carbide slag solid waste, fly ash, desulfurized gypsum, blast furnace The water slag is mixed with the chemical admixture to obtain the mine filling cementitious material.

[0072] The present invention also provides a mine filling material, comprising the mine filling cementitious material described in the above technical scheme and water and sand, the mass ratio of the mine filling cementitious material, water and sand is 1:[1.5,2.6 ]:[3.5,4.5].

[0073] In the mine filling material provided by the present invention, the mass ratio of the mine filling cementitious material, water and sand is preferably 1:[1.7,2.4]:[3.8,4.2].

[0074] The present invention has no special limitation on the preparation method of the mine filli...

Embodiment 1

[0079] Carbide slag solid waste 10.18% ~ 10.40%, fly ash 60.57%, desulfurization gypsum 5.86% ~ 6.32%, blast furnace slag 16.35%, anhydrous calcium chloride 1.82%, anhydrous sodium sulfate 0.38% ~ 0.51%, silicic acid 0.91% of sodium, 2.13% to 2.65% of sodium hydroxide, and 0.15% to 0.20% of calcium lignosulfonate, a water reducer, are uniformly mixed to obtain a mineral filling cementitious material. Mix the above-mentioned mining filling cementitious material with water and sand in a mass ratio of 1:1.9-2.5:3.8-4 to make a filling material.

[0080] Inject the prepared fresh filling material into a test mold of 40mm×40mm×160mm for molding, place the formed test block in an environment with a temperature of 20±2°C and a relative humidity of not less than 50%, and demould after 24 hours. Put the demolded test piece in a curing room with a temperature of 20±2°C and a relative humidity of more than 95%. Maintain to the specified age, and test the surface state of 7d and 28d by s...

Embodiment 2

[0083] Carbide slag 10.42%-10.65%, fly ash 62.11%, desulfurization gypsum 6.21%, blast furnace slag 15.96%-16.47%, anhydrous calcium chloride 0.62%-0.75%, anhydrous sodium sulfate 0.56%, sodium silicate 0.37%-0.48%, sodium hydroxide 1.66%-1.95%, water reducer polycyclic aromatic sulfonate formaldehyde condensate or naphthalene series high-efficiency water reducer 0.31%, mix uniformly to obtain mine filling gelling material. Mix the above-mentioned mineral filling cementitious material with water and sand in a mass ratio of 1:2.0-2.4:3.8-4.1 to make a filling material.

[0084] Inject the prepared fresh filling material into a test mold of 40mm×40mm×160mm for molding, place the formed test block in an environment with a temperature of 20±2°C and a relative humidity of not less than 50%, and demould after 24 hours. Put the demolded test piece in a curing room with a temperature of 20±2°C and a relative humidity of more than 95%. Maintain to the specified age, and test the surfa...

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Abstract

The invention provides application of carbide slag solid wastes as raw materials for preparing a mineral filling gel material. The activities of fly ash and blast furnace slag are activated by using carbide slag; under the situation of the high-content fly ash, the volcanic ash effects of the fly ash and the blast furnace slag are activated through supplementing the carbide slag with chemical admixtures; the hydraulic gel material is generated and plays a mutually-complementary synergetic effect in function, so that the compressive strength of the mineral filling gel material achieves an ideal effect, the purposes of resource utilization of industrial waste residues such as carbide slag and effective filling in a mine are achieved, and a new way is sought for the resource utilization of the carbide slag solid waste.

Description

technical field [0001] The invention relates to the technical field of resource utilization of industrial waste residues, in particular to a method for utilizing carbide slag solid waste. Background technique [0002] Calcium carbide slag is the hydrolysis of calcium carbide to obtain acetylene gas, which is converted into CaO and Ca(OH) 2 With the development of industry, the discharge of carbide slag is increasing year by year. Adding water to 1 ton of calcium carbide can produce 10 tons of calcium carbide slag slurry with a solid content of about 12%. After the carbide slag is classified by gravity sedimentation, the supernatant liquid can be recycled, and the lower layer of calcium carbide slag can be further dehydrated. 40% to 50%, in the form of paste, which is easy to leak and pollute the road surface during transportation. Long-term accumulation not only occupies a large amount of land, but also has a serious corrosion effect on the land. If a large amount of calci...

Claims

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Application Information

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IPC IPC(8): C04B7/26C04B12/00C04B28/00
CPCC04B7/243C04B12/005C04B28/006C04B2201/50C04B22/002C04B14/06Y02P40/10
Inventor 胡相明吴明跃胡尊翔赵艳云程卫民李贻久张宝阳李高鲁
Owner SHANDONG UNIV OF SCI & TECH
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