Wet fly ash gelled material and preparation method thereof

A technology for wet discharge of fly ash and cementitious materials, applied in the field of wet discharge of fly ash cementitious materials and its preparation, can solve the problem that wet discharge of fly ash has not been utilized as a resource and has not yet formed an industrialized wet discharge of fly coal Insufficient utilization of ash products and wet-discharged fly ash, etc., to achieve the effects of improving governance efficiency, low price, saving resources and energy consumption

Inactive Publication Date: 2010-07-28
重庆市建筑科学研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If we use wet-discharged fly ash and other raw materials to grind finely in a water-containing state to make mixed materials, it is also not conducive to storage and transportation. The product can only be multi-component, which is not conducive to industrial produc

Method used

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  • Wet fly ash gelled material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In the present embodiment, each raw material mass percentage is as follows:

[0037] 45% dry fly ash; 47% active mineral material; 8% chemical curing agent;

[0038] Described active mineral material is made of the raw material of following mass percentage:

[0039] 60% blast furnace slag; 10% cement clinker; 20% metakaolin; 10% gypsum;

[0040] Described chemical curing agent is made from the raw material of following mass percentage:

[0041] Aluminum sulfate 3%; potassium carbonate 5%; sodium silicate 14%; sodium carbonate 40%; sodium sulfate 5%; lignosulfonate water reducer 30%, naphthalenesulfonate water reducer 3%.

Embodiment 2

[0043] In the present embodiment, each raw material mass percentage is as follows:

[0044] 49.5% dry fly ash; 49% active mineral material; 1.5% chemical curing agent;

[0045] Described active mineral material is made of the raw material of following mass percentage:

[0046] 10% blast furnace slag; 50% cement clinker; 30% metakaolin; 10% gypsum;

[0047] Described chemical curing agent is made from the raw material of following mass percentage:

[0048] 10% aluminum sulfate; 20% potassium carbonate; 10% sodium silicate; 15% sodium carbonate; 15% sodium sulfate; 7% lignosulfonate water reducer; 23% naphthalene sulfonate water reducer.

Embodiment 3

[0050] In the present embodiment, each raw material mass percentage is as follows:

[0051] 66% dry fly ash; 28% active mineral materials; 6% chemical curing agent;

[0052] Described active mineral material is made of the raw material of following mass percentage:

[0053] 30% blast furnace slag; 30% cement clinker; 35% metakaolin; 5% gypsum.

[0054]Described chemical curing agent is made from the raw material of following mass percentage:

[0055] Aluminum sulfate 3%; potassium carbonate 30%; sodium silicate 5%; sodium carbonate 5%; sodium sulfate 30%; lignosulfonate water reducer 5%, naphthalenesulfonate water reducer 22%. .

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Abstract

The invention aims to provide a wet fly ash gelled material with high intensity and low cost and a preparation method thereof. According to the method, wet fly ash is used as a main raw material and the preparation method solves the problem of recovering an industrial solid waste of the wet fly ash. The wet fly ash gelled material is prepared from the following raw materials in percentage by mass: 45 to 66 percent of dried wet fly ash, 28 to 49 percent of active mineral material and 1.5 to 8 percent of chemical curing agent, wherein the active mineral material is prepared from the following raw materials in percentage by mass: 10 to 60 percent of blast furnace slag, 10 to 50 percent of cement clinker, 10 to 40 percent of metakaolin and 5 to 10 percent of gypsum; and the chemical curing agent is prepared from the following raw materials in percentage by mass: 3 to 30 percent of aluminum sulphate, 5 to 30 percent of potassium carbonate, 5 to 30 percent of sodium silicate, 5 to 40 percent of sodium carbonate, 5 to 30 percent of sodium sulphate and 10 to 60 percent of water reducing agent.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a wet-drained fly ash gelling material and a preparation method thereof. Background technique [0002] With urbanization and industrial development, the amount of industrial solid waste is also increasing. Fly ash is the solid waste produced after the combustion of pulverized coal in thermal power plants. Set in fly ash. Fly ash is divided into dry ash discharge and wet ash discharge according to different discharge methods. Wet discharge fly ash is collected by a water film dust collector before the flue gas is discharged into the air, and is conveyed together with water. The pump and conveying pipeline discharge the fly ash directly into the ash storage tank. Due to the consideration of dust pollution and stacking factors, the fly ash in the ash storage yard is generally wet-discharged fly ash. The wet-discharged fly ash is mixed with water and bottom ash, which has more im...

Claims

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Application Information

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IPC IPC(8): C04B22/14C04B7/26C04B7/153
CPCC04B28/02Y02W30/91C04B12/04C04B14/106C04B18/08C04B18/141C04B22/10C04B22/143C04B22/147C04B22/148C04B2103/302
Inventor 敬相海罗晖王自强肖保怀姜涵杨娟
Owner 重庆市建筑科学研究院有限公司
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