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Curing agent with higher curing ability and use method thereof

A curing agent and capacity technology, applied in the field of solid waste treatment and resource utilization, can solve problems such as poor early strength, and achieve the effects of improving strength, facilitating preparation, and reducing fluidity

Active Publication Date: 2019-02-15
罗强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcoming of the poor early strength of the filling body in the existing iron tailings backfilling technology, and provide a curing agent with strong curing ability, which has a good curing effect on tailings with high moisture content , can effectively improve the early strength of the filling body, meet engineering requirements, and be economical and environmentally friendly

Method used

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  • Curing agent with higher curing ability and use method thereof
  • Curing agent with higher curing ability and use method thereof
  • Curing agent with higher curing ability and use method thereof

Examples

Experimental program
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Embodiment 1

[0039] A kind of curing agent with stronger curing ability of the present embodiment comprises the following raw materials in parts by weight:

[0040]

[0041] Wherein the calcium base comprises 5 parts by mass of heavy calcium powder, 1 part by mass of dolomite and 1 part by mass of Glauber's salt;

[0042] 1 part of super absorbent resin.

[0043] In this embodiment, the active mixed material includes fly ash, and the specific surface area of ​​the active mixed material is greater than or equal to 400m2 / kg.

[0044] Microsilica fume in this example is formed by rapid oxidation, condensation and precipitation of ferroalloy with air when ferrosilicon and industrial silicon are smelted, and the specific surface area is 20000m 2 / kg, fine silica fume particles, large specific surface area, can absorb a large amount of water in the initial stage of the reaction, and micro silica fume can react with calcium-alkaline hydration to generate Ca(OH) 2 Reaction to form gelled pro...

Embodiment 2

[0066] A kind of curing agent with strong curing ability of the present embodiment, its composition is basically the same as that of embodiment 1, further: include the following raw materials in parts by weight:

[0067]

[0068] Wherein the calcium base comprises 6 parts by mass of heavy calcium powder, 1.5 parts by mass of dolomite and 2 parts by mass of Glauber's salt;

[0069] 1.5 parts of super absorbent resin.

[0070] In this embodiment, the active mixed material includes granulated blast furnace slag and steel slag, and the specific surface area of ​​micro silica fume is 22000m 2 / kg, cement includes Portland cement and aluminate cement, sulfate activator includes anhydrite and desulfurized gypsum.

[0071] In this embodiment, 6 parts by mass of heavy calcium powder and 1.5 parts by mass of dolomite were calcined at 880° C. for 2 hours at a high temperature, and then the calcined heavy calcium powder and dolomite were ground together with 2 parts by mass of Glauber...

Embodiment 3

[0082] A kind of curing agent with strong curing ability of the present embodiment, its composition is basically the same as that of embodiment 2, further: include the following raw materials in parts by weight:

[0083]

[0084] Wherein the calcium base comprises 7 mass parts of heavy calcium powder, 2 mass parts of dolomite and 3 mass parts of Glauber's salt;

[0085] 2 parts of super absorbent resin.

[0086] In this embodiment, the active mixed material includes granulated blast furnace slag and steel slag, and the specific surface area of ​​micro silica fume is 26000m 2 / kg, cement includes ordinary Portland cement and aluminate cement, sulfate activator includes desulfurized gypsum and hemihydrate gypsum.

[0087] In this embodiment, 7 parts by mass of heavy calcium powder and 2 parts by mass of dolomite were calcined at 950°C for 2 hours at a high temperature, and then the calcined heavy calcium powder and dolomite were ground together with 3 parts by mass of Glaube...

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Abstract

The invention discloses a curing agent with higher curing ability and a use method thereof, and belongs to the technical field of solid waste disposal and resource utilization. The curing agent with higher curing ability is prepared from the following raw materials in parts by weight: 50 to 90 parts of active admixture, 0 to 5 parts of micro-silicon fume, 5 to 15 parts of cement, 5 to 15 parts ofa sulfate activator, 0 to 15 parts of calc-alkali and 1 to 2 parts of super absorbent resin. According to the curing agent disclosed by the invention, the defect of poorer early strength of a fillingbody in the existing iron tailing backfill technology is overcome and extremely-high dispersion can be maintained under a water-rich system; the curing agent is in full contact with the active admixture and provides a high PH alkaline environment for activating the active admixture, so that the activity of the active admixture is quickly activated and the early strength of the iron ore tailing filling body with high water content is effectively improved to meet the safety engineering requirements of filling.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment and resource utilization, and more specifically relates to a curing agent with strong curing ability. Background technique [0002] Iron ore tailings are solid wastes produced during iron ore mining. With the large-scale mining of mines, the resulting waste iron ore tailings are accumulated on the surface, occupying a large amount of cultivated land, and bringing serious harm to the ecological environment and residents' lives. How to solve these abandoned iron ore tailings has also become a problem that has to be considered in the mining process. The use of tailings sand for mine filling is a new economical and environmentally friendly technology for mining in recent years. This method can not only process and utilize the discarded tailings sand, but also fill the mining area, protect the surface safety of the goaf, and realize a virtuous cycle of mining and filling, which is the t...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/06
CPCC04B28/04C04B28/06C04B2111/00775C04B2201/50C04B18/08C04B22/143C04B22/064C04B22/066C04B22/147C04B24/24C04B18/146C04B7/02C04B18/142C04B22/145C04B18/12
Inventor 罗红石丹丹
Owner 罗强
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