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Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof

A technology of hot pressing and artificial stone, applied in the field of building materials, can solve the problem of high cost of raw materials, and achieve the effects of recycling, improving gelling activity and improving strength

Pending Publication Date: 2022-07-22
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above preparation method can obtain artificial stone with high compressive strength, the cost of raw materials used is relatively high

Method used

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  • Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof
  • Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof
  • Hot-press molded maintenance-free solid waste-based artificial stone and preparation method thereof

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preparation example Construction

[0022] The invention provides a preparation method of a hot-pressed curing-free solid waste-based artificial stone, comprising:

[0023] The circulating fluidized bed fly ash, calcium carbide slag, desulfurized gypsum and water are mixed, and then hot-pressed to obtain a solid-waste-based artificial stone without curing by hot-pressing.

[0024] In the invention, the circulating fluidized bed fly ash, calcium carbide slag, desulfurized gypsum and water are mixed, and then hot-pressed to obtain a solid-waste-based artificial stone without curing by hot-pressing.

[0025] In the present invention, the circulating fluidized bed fly ash, calcium carbide slag and desulfurized gypsum are preferably pretreated by heating respectively before use. In the present invention, the heating temperature for the heating pretreatment of the circulating fluidized bed fly ash, calcium carbide slag and desulfurized gypsum is preferably 100-110°C, more preferably 105°C. The present invention has n...

Embodiment 1

[0048] A kind of preparation method of hot-pressed curing-free solid waste-based artificial stone

[0049] Raw material pretreatment: The circulating fluidized bed fly ash, calcium carbide slag and desulfurized gypsum were heated to constant weight at 105°C.

[0050] The raw materials required for the preparation of hot-pressed curing-free solid waste-based artificial stone: 80kg of circulating fluidized bed fly ash, 20kg of calcium carbide slag, 15kg of desulfurized gypsum and 35kg of water, of which circulating fluidized bed fly ash, calcium carbide slag and desulfurized gypsum After pretreatment; the weight ratio of CFB fly ash, carbide slag, desulfurized gypsum and water is 80:20:15:35.

[0051] Preparation:

[0052] (1) adding the prepared raw material in the stirring mixer and stirring for 30 minutes, and the stirring speed is controlled to be 200 rev / min to obtain the mixed material;

[0053] (2) Pour the mixture obtained in step (1) into a mold, and perform hot press...

Embodiment 2

[0057] A kind of preparation method of hot-pressed curing-free solid waste-based artificial stone

[0058] Raw material pretreatment: The circulating fluidized bed fly ash, calcium carbide slag and desulfurized gypsum were heated to constant weight at 105°C.

[0059] The raw materials required for the preparation of hot-pressed curing-free solid waste-based artificial stone: 80kg of circulating fluidized bed fly ash, 20kg of calcium carbide slag, 15kg of desulfurized gypsum and 35kg of water, of which circulating fluidized bed fly ash, calcium carbide slag and desulfurized gypsum After pretreatment; the weight ratio of CFB fly ash, carbide slag, desulfurized gypsum and water is 80:20:15:35.

[0060] Preparation:

[0061] (1) adding the prepared raw material in the stirring mixer and stirring for 30 minutes, and the stirring speed is controlled to be 200 rev / min to obtain the mixed material;

[0062] (2) Pour the mixture obtained in step (1) into a mold, and perform hot press...

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Abstract

The invention relates to the technical field of building materials, and provides a hot-press molded maintenance-free solid waste-based artificial stone and a preparation method thereof. According to the characteristics that main components of the circulating fluidized bed fly ash contain quartz SiO2 and Al2O3 and main components of the carbide slag contain Ca (OH) 2, the circulating fluidized bed fly ash and the carbide slag are subjected to a pozzolanic reaction in the hot pressing process, and hydrated calcium silicate and hydrated calcium aluminate products are obtained; the fly ash of the circulating fluidized bed is subjected to certain sulfate excitation by utilizing the characteristics that main components in the desulfurized gypsum contain CaSO4. 2H2O and the desulfurized gypsum contains SO4 < 2->, so that the gelling activity of the fly ash of the circulating fluidized bed is improved; and finally, along with the proceeding of the hot pressing process, hydration reaction can be carried out between the three solid wastes of the circulating fluidized bed fly ash, the carbide slag and the desulfurized gypsum and water to generate gelatinous substances such as hydrated aluminosilicate and the like, so that the strength of the artificial stone is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a hot-pressed curing-free solid waste-based artificial stone and a preparation method thereof. Background technique [0002] Artificial stone is made of unsaturated polyester resin as a binder, combined with natural marble or calcite, dolomite, silica sand, glass powder and other inorganic powders, as well as an appropriate amount of flame retardants, colors, etc. It is formed and cured by vibration compression, extrusion and other methods. Compared with natural stone, artificial stone has bright colors, high finish, uniform color, compressive and wear-resistant, good toughness, compact structure, strong and durable, light specific gravity, non-absorbent, corrosion-resistant and weathering, small color difference, non-fading, radioactive It has the advantages of comprehensive utilization of resources, and has a role that cannot be underestimated in environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/54
CPCC04B28/144C04B2111/54C04B2201/52C04B18/08C04B18/0481
Inventor 廖洪强段德丹王佳娜程芳琴
Owner SHANXI UNIV
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