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A composite gel material using bulk solid waste as raw material and its preparation method

A technology of composite gel and raw materials, which is applied in the field of solid waste recycling, and achieves the effects of simple production process, high-efficiency utilization and low cost

Active Publication Date: 2022-03-01
INNER MONGOLIA XINGTAI CONSTRAL GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some progress has been made in the research of new cementitious materials in recent years, there are few reports on the preparation of filling cementitious materials using ultra-fine iron tailings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In this embodiment, a composite gel material using bulk solid waste as a raw material includes the following raw materials in parts by weight:

[0016] 45 parts of iron tailings, 8 parts of blast furnace slag, 15 parts of fly ash, 25 parts of desulfurization ash, 25 parts of carbide slag, and 0.1 part of activator. Iron tailings, fly ash, blast furnace slag, desulfurization ash, and calcium carbide slag are all bulk solid wastes. In this example, iron tailings contain 72.6% of silicon dioxide, 7.3% of alumina, and 12.1% of iron oxide. The content of silicon dioxide in fly ash is 47.6%, the content of alumina is 22.3%, the content of iron oxide is 10.2%, and the content of calcium oxide is 7.5%. The silicon dioxide content in the blast furnace slag is 33.9%, the alumina content is 13.6%, and the calcium oxide content is 39.3%. The silica content in the desulfurization ash is 17.1%, the alumina content is 13.2%, the iron oxide content is 4.3%, and the calcium oxide conte...

Embodiment 2

[0028] In this embodiment, a composite gel material using bulk solid waste as a raw material includes the following raw materials in parts by weight:

[0029] 40 parts of iron tailings, 10 parts of blast furnace slag, 20 parts of fly ash, 30 parts of desulfurization ash, 30 parts of carbide slag, and 0.14 parts of activator.

[0030] In this embodiment, the content of silicon dioxide in the iron tailings is 70%, the content of aluminum oxide is 10%, and the content of iron oxide is 15%. The silica content in fly ash is 40%, alumina content 35%, iron oxide content 15%, calcium oxide content 10%. The blast furnace slag contains 32% silica, 16% alumina and 42% calcium oxide. The desulfurization ash contains 10% silica, 20% alumina, 7% iron oxide and 60% calcium oxide. Carbide slag contains 3% silica, 3% alumina, 1% iron oxide and 60% calcium oxide.

[0031] The activator includes the following raw materials in parts by weight: 15 parts of alkali slag, 30 parts of barium slag, ...

Embodiment 3

[0038] A kind of composite gel material of the present invention uses bulk solid waste as raw material, comprises the raw material of following weight part:

[0039] 50 parts of iron tailings, 5 parts of blast furnace slag, 10 parts of fly ash, 20 parts of desulfurization ash, 20 parts of carbide slag, and 0.05 parts of activator.

[0040]Iron tailings contain 75% silica, 5% alumina and 10% iron oxide. Fly ash contains 60% silica, 15% alumina, 5% iron oxide and 5% calcium oxide. The blast furnace slag contains 35% silica, 11% alumina and 38% calcium oxide. Desulfurization ash contains 30% silica, 10% alumina, 2% iron oxide and 30% calcium oxide. Carbide slag contains 5% silica, 1% alumina, 0.1% iron oxide and 40% calcium oxide.

[0041] The activator includes the following raw materials in parts by weight: 20 parts of alkali slag, 20 parts of barium slag, 10 parts of sulfur slag, and 10 parts of organic compound.

[0042] The organic compound is diethanolamine.

[0043] T...

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Abstract

The invention discloses a composite gel material using bulk solid waste as raw material, including the following raw materials in parts by weight: 40-50 parts of iron tailings, 5-10 parts of blast furnace slag, 10-20 parts of fly ash, desulfurization ash 20-30 parts, carbide slag 20-30 parts, activator 0.05-0.14 parts. The invention can consume a large amount of industrial bulk solid waste, not only can reduce environmental pollution, save a large area of ​​fertile land clay, turn waste into treasure, and realize high-efficiency utilization of industrial bulk solid waste; moreover, the production process of the composite gel material is simple, low in cost and high in quality.

Description

technical field [0001] The invention belongs to the technical field of solid waste recycling, and in particular relates to a composite gel material using bulk solid waste as a raw material and a preparation method thereof. Background technique [0002] In recent years, many scholars have carried out a series of researches on the current situation of single filling cementitious material and high filling cost. Lu Qianming et al. used papermaking sludge ash and sulphoaluminate cement clinker to prepare coal mine filling cementitious materials, and studied the effects of suspension thickeners, activators, and slurry water-solid ratios on the strength, water retention, and fluidity of cementitious materials. And using X-ray diffraction, scanning electron microscopy and energy spectrum analysis to analyze the hydration products microscopically, the prepared filling cementitious material can meet the pumping and strength requirements at the same time; Li Gaolu et al. used fly ash a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26C04B7/153
CPCC04B7/243C04B7/153Y02P40/10
Inventor 张延年
Owner INNER MONGOLIA XINGTAI CONSTRAL GRP CO LTD
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