Phosphogypsum-based foam-like structure building material and preparation method thereof

A technology of foam structure and building materials, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as technical solutions for imitation foam structures, and achieve sustainable development and good decorative effects , the effect of protecting the environment

Inactive Publication Date: 2015-09-16
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At the same time, there is also the technology of using phosphogypsum to prepare building insulation materials, but there is no technical solution for the imitation of foam structure in the process of using phosphogypsum to prepare building materials.

Method used

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  • Phosphogypsum-based foam-like structure building material and preparation method thereof
  • Phosphogypsum-based foam-like structure building material and preparation method thereof
  • Phosphogypsum-based foam-like structure building material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] Formula: 300kg of phosphogypsum, 150kg of electrolytic yellow phosphorus slag, 10kg of quicklime, 6kg of sepiolite, 5kg of expanded perlite, and 2kg of floating beads.

[0040] Preparation:

[0041] Take phosphogypsum and unslaked lime according to the mass ratio of 10:1 and neutralize them for 1min, put them in a mixer and stir for 30s, then turn on the mixer, add electrolytic yellow phosphorus slag and continue to stir for 60s to obtain a mixed material, and then dry the mixed material to After the free water is ≤1%, put it into a ball mill for grinding for 40 minutes, until the specific surface area is 275m 2 / kg; the mixed material after ball milling was calcined at 140°C for 3 hours, and then aged for 24 hours; the aged material was put into a vibration molding machine, and formed by vibration according to the required shape; After natural curing of the vibration-molded material for 7 days, autoclave curing is carried out. The heating rate is 20°C / h, the control ...

Embodiment 2

[0043] Formula: 800kg of phosphogypsum, 600kg of electrolytic yellow phosphorus slag, 100kg of quicklime, 6kg of sepiolite, 5kg of expanded perlite, and 2kg of floating beads.

[0044] Preparation:

[0045] Take phosphogypsum and unslaked lime according to the mass ratio of 10:1 and neutralize them for 1min, put them in a mixer and stir for 30s, then turn on the mixer, add electrolytic yellow phosphorus slag and continue to stir for 60s to obtain a mixed material, and then dry the mixed material to After the free water is ≤1%, put it into a ball mill and grind for 42 minutes until the specific surface area is 275m 2 / kg; the mixed material after ball milling was calcined at a temperature of 142°C for 3 hours, and then aged for 26 hours; the aged material was put into a vibration molding machine, and formed by vibration according to the required shape; After natural curing of vibration-molded materials for 7 days, autoclave curing is carried out. The heating rate is 20°C / h, th...

Embodiment 3

[0047] Formula: phosphogypsum 400kg, electrolytic yellow phosphorus slag 250kg, quicklime 30kg, sepiolite 6kg, expanded perlite 5kg, floating beads 2kg.

[0048] Preparation:

[0049] Take phosphogypsum and unslaked lime according to the mass ratio of 10:1 and neutralize them for 1min, put them in a mixer and stir for 30s, then turn on the mixer, add electrolytic yellow phosphorus slag and continue to stir for 60s to obtain a mixed material, and then dry the mixed material to After the free water is ≤1%, put it into a ball mill and grind for 44 minutes until the specific surface area is 276m 2 / kg; the mixed material after ball milling was calcined at a temperature of 144°C for 3 hours, and then aged for 28 hours; the aged material was put into a vibration molding machine, and formed by vibration according to the required shape; After natural curing of the vibration-molded material for 7 days, autoclave curing is carried out. The heating rate is 20°C / h, the control temperatu...

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Abstract

The invention discloses a phosphogypsum-based foam-like structure building material and a preparation method thereof. The phosphogypsum-based foam-like structure building material comprises the following raw materials by weight part: 300-800 parts of phosphogypsum, 150-600 parts of electrolytic yellow phosphorus slag and 10-100 parts of quicklime. The preparation method comprises the following steps: burdening, aging, moulding, performing autoclaved curing on a phosphogypsum base material, drying, and spraying to obtain the finished product. The phosphogypsum-based foam-like structure building material has the characteristics of simple construction process, good waterproof flame resistance, high compressive strength, high flexural intensity and strong weatherability, has good decorative effect as an interior decoration building material, consumes a lot of phosphogypsum, reduces natural stone exploitation, and has important meaning for environment protection and continuous development.

Description

technical field [0001] The invention relates to the field of chemical building materials, in particular to a phosphogypsum-based imitation foam structure building material and a preparation method thereof. Background technique [0002] Phosphogypsum is the main industrial by-product when phosphate and compound fertilizer enterprises use phosphate rock and sulfuric acid as raw materials to produce phosphoric acid. The wet-process phosphoric acid production process is to produce extraction slurry by decomposing phosphate rock powder with sulfuric acid, and then filtering to obtain phosphoric acid, which is filtered and washed. Phosphogypsum waste is generated in the process. [0003] With the development of ammonium phosphate industry and high-concentration phosphate compound fertilizer, the discharge of phosphogypsum is increasing year by year. At present, the annual increase of phosphogypsum discharge in the world is 280 million tons, and China is about 50 million tons, acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/04C04B22/06C04B14/18
CPCY02W30/91
Inventor 杨步雷杨永彬向前勇王伟刘小成胡新菊李泽钢李显权
Owner GUIZHOU KAILIN GRP CO LTD
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