All-solid-waste cementing material containing refining slag and preparation method of all-solid-waste cementing material

A technology for cementitious material and refining slag, which is applied to the field of all-solid waste cementitious material containing refining slag and its preparation, can solve the problems of poor working performance, small application range, low strength, etc., to protect the environment and broaden the scope of application , The effect of increasing the content of converter steel slag

Pending Publication Date: 2019-10-08
QIANAN WEISHENG SOLID WASTE ENVIRONMENTAL PROTECTION IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of cementitious material has low strength, poor working performance and small application range.

Method used

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  • All-solid-waste cementing material containing refining slag and preparation method of all-solid-waste cementing material
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  • All-solid-waste cementing material containing refining slag and preparation method of all-solid-waste cementing material

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preparation example Construction

[0027] The invention provides an all-solid waste gelling material containing refining slag and a preparation method thereof.

[0028] In terms of mass percentage, the cementitious material includes 1% to 20% of refining slag, 10% to 20% of industrial by-product gypsum, and the balance is converter steel slag and slag, wherein the mass ratio of converter steel slag to slag is 3 / 4~4 / 3, the specific surface area of ​​refining slag and industrial by-product gypsum is 300m 2 / kg~600m 2 / kg, the specific surface area of ​​slag and converter steel slag is 400m 2 / kg~650m 2 / kg.

[0029] The preparation method of the cementitious material is roughly as follows: firstly, the refining slag, industrial by-product gypsum, converter steel slag and slag are mixed according to the mass ratio; 400~650m 2 / kg, refining slag and industrial by-product gypsum are ground separately or mixed to a specific surface area of ​​300-600m2 / kg; finally, mix the ground slag, refining slag, converter ...

Embodiment 1

[0032] Preparation of cementitious material: It is prepared by mixing raw materials according to the following mass percentages, wherein the mass ratio of converter steel slag to slag is 3 / 4, refining slag is 10%, and desulfurization gypsum is 10%, and the slag is ground to a ratio of 560m 2 / kg, the converter steel slag is ground to a ratio of 450m 2 / kg, refining slag grinding to 350m 2 / kg, desulfurized gypsum is ground to a ratio of 400m 2 / kg, the stability test of cementitious materials is carried out in accordance with the provisions of GB / T 1346-2011 "Cement Standard Consistency Water Consumption, Setting Time, and Stability Test Methods". Prepare consistent all-solid waste gelling materials according to the above-mentioned "gelling material" ratio. After testing by the test cake method and Rayleigh clip method, the stability is qualified. After the initial setting time and final setting time are tested, the initial setting time is determined to be 154min, the final ...

Embodiment 2

[0038] Preparation of cementitious material: The raw materials are mixed according to the following mass percentages, wherein the ratio of converter steel slag to slag is 1 / 1, refining slag is 5%, and desulfurization gypsum is 15%, and the slag is ground to a ratio of 560m 2 / kg, the converter steel slag is ground to a ratio of 450m 2 / kg, refining slag grinding to 350m 2 / kg, desulfurized gypsum is ground to a ratio of 400m 2 / kg, the stability test of cementitious materials is carried out in accordance with the provisions of GB / T 1346-2011 "Cement Standard Consistency Water Consumption, Setting Time, and Stability Test Methods". Prepare consistent all-solid waste gelling materials according to the above-mentioned "gelling material" ratio. After testing by the test cake method and Rayleigh clip method, the stability is qualified. After the initial setting time and final setting time are tested, the initial setting time is determined to be 186min, the final setting time is 4...

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Abstract

The invention provides an all-solid-waste cementing material containing refining slag and a preparation method of the all-solid-waste cementing material, and belongs to the technical field of solid waste resource utilization. The cementing material is prepared from 1%-20% of the refining slag, 10%-20% of industrial by-product gypsum and the balance of converter steel slag and mineral slag, in preparation, the mineral slag and the converter steel slag are separately or mixedly grinded until the specific surface area is 400-650 m<2>/kg according to the mass ratio being 3/4-4/3, the refining slagand the industrial by-product gypsum are separately or mixedly grinded until the specific surface area is 300-600 m<2>/kg, the grinded mineral slag, the grinded refining slag, the grinded converter steel slag and the grinded industrial by-product gypsum are evenly mixed to prepare the all-solid-waste cementing material containing the refining slag. According to the all-solid-waste cementing material containing the refining slag and the preparation method of the all-solid-waste cementing material, the application efficiency of metallurgy residue solid waste is effectively improved, slag hydration in later stage is enhanced, and the concrete cost is obviously lowered; and meanwhile later-stage strength improving of the cementing material is promoted through the synergistic effect of the converter steel slag and the mineral slag, the initial setting time and the final setting time of steel-slag concrete are effectively shortened through the refining slag, and the application range of thecementing material containing the converter steel slag is widened.

Description

technical field [0001] The invention relates to the technical field of resource utilization of solid waste, in particular to an all-solid waste gelling material containing refining slag and a preparation method thereof. Background technique [0002] Many iron and steel enterprises refer to the slag added in the secondary refining process as refining slag or refining synthetic slag, and some iron and steel enterprises refer to the waste slag discharged after the secondary refining of molten steel as refining slag, refining waste slag or casting residue. The refining slag in the present invention refers to the latter, that is, the waste slag discharged after molten steel is refined. [0003] Refining slag is usually composed of CaO, Al 2 o 3 , SiO 2 and MgO, and its mineralogy phase is olivine (γ-C 2 S), mayenite (C 12 A 7 ), tricalcium aluminate (C 3 A), a small amount of periclase (MgO). Refining slag has hydration characteristics, and its main component C 12 A 7 C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/26
CPCC04B11/26C04B11/262C04B11/264
Inventor 倪文李颖蔡水生吴伟琚永健汪坤
Owner QIANAN WEISHENG SOLID WASTE ENVIRONMENTAL PROTECTION IND CO LTD
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