An active activator for building materials of inorganic solid waste and its preparation method

An active stimulant and inorganic solid technology, applied in the field of solid waste resource utilization, can solve problems such as negative impact on product quality, and achieve the effect of improving strength and quality

Active Publication Date: 2021-11-26
上海海顾新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, since inorganic solid waste is mainly composed of silicon-calcium-aluminum minerals with stable chemical properties and no pozzolanic activity, no matter in the cement system or the autoclaved non-burning system, the inorganic solid waste can only be composed of aggregates in most cases. Incorporated in the form of fillers, too much incorporation will also have a negative impact on the quality of the product

Method used

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  • An active activator for building materials of inorganic solid waste and its preparation method
  • An active activator for building materials of inorganic solid waste and its preparation method
  • An active activator for building materials of inorganic solid waste and its preparation method

Examples

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Effect test

Embodiment 1

[0028] An active activator for building materials from inorganic solid waste, which is composed of C-S-H seed crystals, sodium hydroxide, sodium hydroxide, soda ash and desulfurized gypsum mixed according to the following mass ratio, with a particle size of 100 mesh:

[0029]

[0030] A preparation method of an active activator for building materials of inorganic solid waste:

[0031] (A) Preparation of seed crystals: first weigh amorphous silica / quick lime=1.5 by mass ratio, put into a mechanically stirred reactor after uniform mixing, then add water 10 times of the total mass of the mixture in the reactor, and React at 140°C for 5 hours, then filter, vacuum dry, grind, and pass through a 100-mesh sieve to obtain C-S-H seed crystals;

[0032] (B) Grinding and sieving: grinding sodium hydroxide, sodium hydroxide, soda ash and desulfurized gypsum respectively, and crossing a 100-mesh sieve;

[0033] (C) Mixing and stirring: 40 parts of C-S-H seed crystals; 20 parts of sodiu...

Embodiment 2

[0035] An active stimulator for building materials from inorganic solid waste, which is composed of C-S-H seed crystals, sodium hydroxide, sodium hydroxide, soda ash and desulfurized gypsum mixed according to the following parts by mass, with a particle size of 100 mesh:

[0036]

[0037] A preparation method of an active activator for building materials of inorganic solid waste:

[0038] (A) Seed crystal preparation: take amorphous silica / quicklime=1.65 according to the mass ratio, put it into a mechanically stirred reactor after mixing evenly, and then add amorphous silica and quicklime total mass 12 to the reactor. times water, react at 160°C for 8 hours, then filter, vacuum dry, grind, and pass through a 100-mesh sieve to obtain C-S-H seed crystals;

[0039] (B) Grinding and sieving: grinding sodium hydroxide, sodium hydroxide, soda ash and desulfurized gypsum respectively, and crossing a 100-mesh sieve;

[0040] (C) Mixing and stirring: Weigh 55 parts of C-S-H seed cr...

Embodiment 3

[0042]According to the mass ratio of power plant fly ash: cement: aggregate = 45:15:40, two groups of formulas were weighed respectively. One group without activator was used as the control group, and the other group was added with activator as the experimental group. Building material product performance impact test. The activator used in the experimental group is the active activator prepared in Example 1, and the addition of the activator is 5% of the total mass of cement, power plant fly ash and aggregate, and the control group and the experimental group all add cement, power plant fly ash and 30% water of the total mass of the aggregate, mixed evenly to obtain a mixture, poured the mixture into a mold for molding, and then cured for 28 days at a temperature of 20±3°C and a humidity of 90%, and mixed with an active stimulator The performance test results of the experimental group sample and the contrast blank group sample without adding the active activator (except that th...

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Abstract

The invention relates to an active stimulator for building materials from inorganic solid waste and a preparation method thereof, which belongs to the technical field of resource utilization of solid waste. The active activator is composed of C-S-H seed crystals, sodium hydroxide, sodium hydroxide, soda ash, and desulfurized gypsum. The C-S-H seed crystals are composed of quicklime and amorphous silica under hydrothermal conditions Made under. Among them, sodium hydroxide, sodium hydroxide, soda ash, and desulfurized gypsum play the role of alkali excitation and sulfate excitation, so as to promote the conversion of silicon-aluminum-calcium minerals and mineral salts in inorganic solid waste into hydration products. C-S-H seeds promote the formation of high-strength crystalline products. At the same time, the presence of seeds can also reduce the average voids in building material products, reduce the proportion of harmful pores and less harmful pores, and further improve the quality of inorganic solid waste building materials. The strength and performance of chemical products.

Description

technical field [0001] The invention relates to an active stimulator for building materials from inorganic solid waste and a preparation method thereof, which belongs to the technical field of resource utilization of solid waste. Background technique [0002] Inorganic solid waste, referred to as inorganic solid waste, refers to all kinds of waste slag and dust mainly composed of inorganic silicon, calcium and aluminum produced in the production activities of industries such as industry, mining and construction, including blast furnace slag, steel slag, red Mud, non-ferrous metal slag, fly ash, cinder, sulfuric acid slag, waste gypsum, phosphogypsum, desulfurization ash, ceramic tailings, carbide slag, salt mud, muck, construction waste, waste concrete, river silt and other waste. With the rapid development of my country's economy, the amount of inorganic solid waste is increasing explosively. However, at present, inorganic solid waste with a large number, various types and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/14
CPCC04B40/0039C04B22/00C04B12/04C04B22/062C04B22/10C04B22/145
Inventor 郦怡景镇子成铭钊
Owner 上海海顾新材料科技有限公司
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