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Acidic slag-based filling material and preparation method thereof

A technology of filling materials and slag, which is applied in the direction of filling materials, mining equipment, earth square drilling, etc., can solve the problems of low utilization rate and volume stability, and achieve the effects of low cost, good fluidity and low energy consumption

Pending Publication Date: 2020-06-23
山东坊能新动能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

For example, the high calcium oxide content of high calcium fly ash is likely to cause problems such as volume stability, so the utilization rate is low, but if it can be compounded with acid slag to prepare gel materials, the characteristics of high calcium fly ash can be fully utilized

Method used

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  • Acidic slag-based filling material and preparation method thereof

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preparation example Construction

[0050] The invention discloses a method for preparing an acidic slag-based filling material, which comprises the following steps:

[0051] (1) Prepare 50-150 parts of acidic slag, 30-40 parts of high alkalinity powder, 10-20 parts of ultra-fine active powder, 1-5 parts of acid-base regulator, and 1-5 parts of dispersed adsorbent according to the number of parts by mass 2-10 parts of swelling components, 0.5-1.5 parts of thickening water-retaining agent, and 0.5-1.5 parts of retarding superplasticizer.

[0052] (2) Mix the raw materials prepared in step 1 with water at a ratio of 1:0.8-1.1 to obtain the slag-based filling material.

[0053] The invention discloses an acidic slag-based filling material and the application of the preparation method thereof in the field of mine filling.

Embodiment 1

[0055] A slag-based filling material, preparation method and application, comprising the following steps:

[0056] (1) Prepare 50-150 parts of acidic slag and 30-40 parts of high alkalinity powder according to the mass parts (component ratio: 30-40 parts of high-calcium fly ash, 30-40 parts of brucite powder, silicon micropowder 30-40 parts), ultra-fine active powder 10-20 parts (component ratio: 30-40 parts of nano-calcium sulfoaluminate, 30-40 parts of nano-porous calcium phosphate, 30-40 parts of nano-light burned magnesium), 1-5 parts of acid-base regulator (component ratio: 30-40 parts of sodium aluminate, 30-40 parts of sodium tripolyphosphate, 30-40 parts of anhydrous sodium tetraborate), 1-5 parts of dispersed adsorbent ( The component distribution ratio is: 40-60 parts of sodium-based bentonite, 40-60 parts of calcium-based bentonite), 2-10 parts of quicklime, 0.5-1.5 parts of hydroxyethyl cellulose ether, 0.5-1.5 parts of retarding superplasticizer (group The distri...

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Abstract

The invention relates to the technical field of mine filling, in particular to an acidic slag-based filling material and a preparation method thereof. The filling material disclosed by the invention is prepared from the following raw materials in parts by weight: 50-150 parts of acidic slag, 30-40 parts of high-alkalinity powder, 10-20 parts of ultrafine active powder, 1-5 parts of an acid-base regulator, 1-5 parts of a dispersion adsorbent, 2-10 parts of an expansion component, 0.5-1.5 parts of a thickening and water-retaining agent and 0.5-1.5 parts of a retarding and water-reducing agent. The invention also provides the preparation method of the filling material. The acidic slag-based filling material has the characteristics of high stone strength, good fluidity, good water retention, good suspension dispersibility, easy transportation, low cost, environmental protection and energy saving.

Description

technical field [0001] The invention relates to the technical field of mine filling, in particular to an acidic slag-based filling material and a preparation method thereof. Background technique [0002] At present, most mines use cement as filling material for filling, but cement has problems such as small adjustable range of water-cement ratio, high production energy consumption, and poor stability of filling body. Slag, as an industrial waste slag discharged during blast furnace ironmaking, has high potential activity. Replacing cement with slag can reduce the heat of hydration of the system, improve the workability and durability of the filling body, and can also effectively utilize resources, save energy, protect the environment, and reduce costs. Therefore, it is of great strategic significance to study mine filling materials with slag as the main raw material. [0003] At present, many studies use slag in mine filling. For example, patent application CN 10795537 A d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/08E21F15/00
CPCC04B28/08E21F15/005C04B2111/00724C04B18/08C04B14/36C04B14/062C04B22/142C04B22/16C04B22/066C04B22/0093C04B22/0013C04B22/00C04B22/064C04B24/383C04B2103/302C04B24/226
Inventor 张霄田冬张亮亮王坤王天奇马明辉
Owner 山东坊能新动能科学研究院有限公司
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