Synthesis-reactivation technique for preparing inorganic coagulation material

An inorganic cementitious material, reactivation technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of patent and application technology that is difficult to apply in large quantities, and the adverse effects of activator cement performance and construction performance , application restrictions and other issues, to achieve the effect of implementing circular economy, promoting sustainable development, and promoting development

Inactive Publication Date: 2007-07-04
尹小林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The application technology of adding activators adversely affects the performance and construction performance of cement, and its application is limited to a certain extent, which makes it difficult to apply a large number of existing patents and application technologies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: By weight percentage, 65% of fly ash from power plants, 20% of desulfurized gypsum, 3% of bauxite, and 12% of carbide slag were mixed evenly, extruded into blocks, and after natural curing, heat treatment at 700°C. Add 5% of additives, and the grinding fineness is 3.7% after sieve of 80um. The standard consistency is 23.3%, the initial setting is 1:15, the final setting is 2:13, the compression resistance is 20.3MPa in 3 days, the bending resistance is 5.1MPa, the compression resistance is 39.6MPa in 28 days, the bending resistance is 8.4MPa, and the stability is qualified.

Embodiment 2

[0028] Example 2: By weight percentage, dry ash 49%, phosphogypsum 35%, lime slag 5%, alum sludge 2%, carbide slag 9%, mixed evenly, pressed into blocks and stacked for natural curing. Heat treatment at 750°C, add 6.5% of additives, grind to 80um and sieve 2.7% to make it. The standard consistency is 22.7%, the initial setting is 2:31, the final setting is 3:49, the compression resistance is 24.4MPa in 3 days, the bending resistance is 5.9MPa, the compression resistance is 42.6MPa in 28 days, the bending resistance is 8.8MPa, and the stability is qualified.

Embodiment 3

[0029] Example 3: According to the percentage by weight, mix 35% wet ash, 50% phosphogypsum, 10% lime slag, and 5% calcium carbide slag from the power plant, mix them evenly and press them into blocks, steam curing, heat treatment at 800°C, and add 4.5% additives , the grinding fineness is 80um and the remaining 2.5% is sieved. Standard consistency 21.9%, initial setting 1:33, final setting 2:27, 1-day compressive strength 15.8MPa, flexural strength 3.6MPa, 3-day compressive strength 35.4MPa, flexural resistance 7.1MPa, 28-day compressive strength 43.6MPa, The bending resistance is 8.8MPa, and the stability is qualified.

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Abstract

The invention relates to a process of preparing inorganic cementing material. It comprises following steps: mixing industrial slag, silicon-containing material, lime, plaster, addictive and water according to a certain proportion; pressing mixed material or compressing it into briquetting, maintaining naturally for thorough reaction, heat treating for activation under 450-850 Deg. C, adding addictive and grinding until sifting leaves is less than 15% with screen of 80 um, and getting inorganic cementing material, which is used as special cement or expansive agent. The invention is characterized by good physical property, stable volume, long durability and workability, low energy consumption and cost and environmental friendly.

Description

technical field [0001] The invention relates to a manufacturing process of building materials, in particular to a process method for comprehensively utilizing industrial waste residues to produce inorganic gelling materials. Background technique [0002] my country's cement production has reached 10×10 8 tons, more than 40% of the world's total cement. The traditional cement production method in my country is "two grindings and one burning", that is, raw materials are ground with limestone, clay and other ingredients, clinker is fired at high temperature (1450 ° C), and gypsum and admixtures are ground together to make cement. The production of this kind of traditional cement consumes a lot of resources such as limestone, clay, coal, etc., and causes too much pollution to the environment, which is not conducive to the sustainable development of the cement industry. [0003] At present, the patents and application technologies of using industrial waste residues as inorganic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B14/02C04B18/14C04B22/00C04B24/00C04B111/72
CPCY02W30/91
Inventor 尹小林
Owner 尹小林
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