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A kind of environment-friendly cavity mold box with large amount of industrial solid waste and preparation method thereof

An environmentally friendly, industrial solid waste technology, used in the field of building materials, can solve the problems of poor compressive strength, difficult construction, and high production costs, and achieve no environmental safety risks, large consumption, and excellent mechanical performance. Effect

Active Publication Date: 2022-04-12
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the existing above-mentioned deficiencies, the object of the present invention is to provide a large-volume industrial solid waste environment-friendly cavity mold box and its preparation method, which solves the problems of high production cost, difficult construction and resistance to existing cavity mold boxes. Compressive strength and other poor performance problems, while solving the environmental safety control problem of industrial solid waste phosphogypsum building materials ecological utilization, and improving the high value-added resource utilization of industrial solid waste

Method used

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  • A kind of environment-friendly cavity mold box with large amount of industrial solid waste and preparation method thereof
  • A kind of environment-friendly cavity mold box with large amount of industrial solid waste and preparation method thereof
  • A kind of environment-friendly cavity mold box with large amount of industrial solid waste and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Configure raw materials: the weight percentage of each component is 36% of phosphogypsum, 10% of fly ash, 11% of desulfurized ash, 7% of quicklime, 2% of lightweight aggregate, and 34% of water.

[0026] 2) Stir the raw materials evenly, then add water to mix and stir evenly, and then cast them in the mold for 10-14 hours under natural conditions, and then remove the mold. The obtained cavity mold box is as follows: figure 1 and figure 2 As shown, it includes an upper module 1 and a lower module 2, the upper module and the lower module can be docked to form a box structure with a cavity inside, and each of the upper module 1 and the lower module 2 is a rectangular frustum-shaped structure, and The large-area end face of the rectangular truncated cone structure is the butt end face 3, and the middle part of the butt end face is concavely formed with a first cavity 5; the respective rectangular truncated cone structures of the upper module and the lower module converg...

Embodiment 2

[0044] 1) Configure raw materials: the weight percentage of each component is 39% of phosphogypsum, 9% of fly ash, 8% of desulfurized ash, 8% of quicklime, 3% of lightweight aggregate, and 33% of water.

[0045] 2) Stir the raw materials evenly, then add water to mix and stir evenly, and then cast them in the mold for 10-14 hours under natural conditions, and then remove the mold. The obtained cavity mold box includes an upper module and a lower module; the upper module and the lower module The lower module can be docked to form a box structure with a cavity inside. The upper module and the lower module each have a rectangular frustum-shaped structure, and the large-area end surface of the rectangular frustum-shaped structure is a butt end surface, and the butt end surface The middle part is concavely formed with a first concave cavity; the angle α between any two adjacent edges between the three edges converging to a vertex on the respective rectangular frustum-shaped structur...

Embodiment 3

[0051] 1) Configure raw materials: the weight percentage of each component is 42% of phosphogypsum, 8% of fly ash, 7% of desulfurized ash, 9% of quicklime, 3% of lightweight aggregate, and 31% of water.

[0052] 2) Stir the raw materials evenly, then add water to mix and stir evenly, then cast in the mold for 10-14 hours under natural conditions, and then remove the mold. The obtained cavity mold box includes an upper module and a lower module, the upper module and the lower module The lower module can be docked to form a box structure with a cavity inside. The upper module and the lower module each have a rectangular frustum-shaped structure, and the large-area end surface of the rectangular frustum-shaped structure is a butt end surface, and the butt end surface The middle part is concavely formed with a first concave cavity; the angle α between any two adjacent edges between the three edges converging to a vertex on the respective rectangular frustum-shaped structures of the...

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Abstract

The invention discloses an environment-friendly cavity mold box with a large amount of industrial solid waste and a preparation method thereof. The box structure of the cavity, the upper module and the lower module are each in a rectangular truncated cone structure, and the middle part of the butt end surface is concave to form a first concave cavity; the upper module and the lower module are respectively rectangular. The included angle between any two adjacent edges among the three edges converging to a vertex is the same, and the vertex is located on the small-area end surface. And the cavity mold box includes the following components in weight percentage: phosphogypsum 35-45%, fly ash 6-10%, desulfurization ash 5-11%, quicklime 7-10%, lightweight aggregate 2-4% %, the balance is water. The obtained cavity mold box product has excellent mechanical performance and no environmental safety risk to the external environment. It is an environmentally friendly new type of gypsum building material product, and it has also realized the scale and industrialization of the comprehensive utilization of bulk industrial solid waste.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cavity mold box with a large amount of industrial solid waste and a preparation method thereof. Background technique [0002] Phosphogypsum is an industrial by-product discharged from the production of phosphoric acid by wet method. At present, 90% of phosphoric acid in the world is produced by wet method, and nearly 5 tons of phosphogypsum are produced for every ton of phosphoric acid produced. The main component of phosphogypsum is calcium sulfate dihydrate (CaSO 4 .2H 2 O), and contains a small amount of phosphate rock, fluoride, phosphoric acid, organic matter, acid insoluble matter, iron and aluminum compounds, etc. The total storage of phosphogypsum in the country has exceeded 100 million tons, mainly distributed in Yunnan, Guizhou, Sichuan, Chongqing and other places, but its real resource utilization is less than 15%, and the rest is in a state of on-site s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B5/32C04B28/14C04B18/06
CPCE04B5/326C04B28/143C04B18/062C04B2201/50C04B2111/00017C04B18/08C04B22/064C04B14/00C04B22/002Y02W30/91
Inventor 王朝强张云刘光成徐振中罗成林
Owner CHONGQING JIAOTONG UNIVERSITY
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