Phosphogypsum-based marble-imitated structure building material and preparation method thereof

A technology of imitating marble and building materials, applied in the direction of manufacturing tools, solid waste management, sustainable waste treatment, etc., can solve the problem of not seeing the technical scheme of imitation marble structure, etc., to achieve sustainable development, good decorative effect, improve the effect of strength

Inactive Publication Date: 2015-06-24
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 marble structure in the process of using phosphogypsum to prepare building materials.

Method used

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  • Phosphogypsum-based marble-imitated structure building material and preparation method thereof
  • Phosphogypsum-based marble-imitated structure building material and preparation method thereof
  • Phosphogypsum-based marble-imitated structure building material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Formula: phosphogypsum 300kg, electrolytic yellow phosphorus slag 150kg, quicklime 10kg.

[0041] Preparation:

[0042] 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 temperature is 120°C, the pressure is 0.2MPa, and the curing time is 5h; take ou...

Embodiment 2

[0044] Formula: phosphogypsum 800kg, electrolytic yellow phosphorus slag 600kg, quicklime 100kg, borax 89kg, paraffin 121kg.

[0045] Preparation:

[0046]Take phosphogypsum and unslaked lime according to the mass ratio of 10:1 and neutralize them for 1min, put them into the mixer, add borax and paraffin and stir for 30s, then turn on the mixer, add electrolytic yellow phosphorus slag and continue to stir for 60s to obtain the mixed material, then After drying the mixed material until free water ≤ 1%, put it into a ball mill and grind it 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, the control temperature i...

Embodiment 3

[0048] Formula: phosphogypsum 400kg, electrolytic yellow phosphorus slag 250kg, quicklime 30kg, borax 89kg, alunite expansion agent 65kg.

[0049] Preparation:

[0050] Take phosphogypsum and unslaked lime according to the ratio of mass ratio of 10:1 and neutralize after 1min, put into the mixer, add borax, alunite expansion agent and stir for 30s, then turn on the mixer, add electrolytic yellow phosphorus slag and continue to stir for 60s to obtain Mix the material, then dry the mixed material until the free water ≤ 1%, put it into a ball mill for grinding for 44 minutes, and ball mill 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 rat...

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Abstract

The invention discloses a phosphogypsum-based marble-imitated structure building material and a preparation method thereof. The phosphogypsum-based marble-imitated structure building material is prepared from the following raw materials in parts by weight: 300-800 parts of phosphogypsum, 150-600 parts of electrolytic yellow phosphorus furnace slag and 10-100 parts of quick lime. A preparation method for the phosphogypsum-based marble-imitated structure building material comprises the following steps: burdening, ageing, forming, performing autoclaved curing, processing a phosphogypsum substrate, drying, spraying and obtaining a finished product. The phosphogypsum-based marble-imitated structure building material has the characteristics of being simple in construction process, light, good in waterproof and fireproof performance, high in compressive strength, high in breaking strength and strong in weather resistance and has a good decorative effect while being used as an indoor decorative building material, a great deal of phosphogypsum is consumed, exploitation of natural stones is reduced, and very import important significance is achieved for protecting the environment and realizing sustainable development.

Description

technical field [0001] The invention relates to the field of chemical building materials, in particular to a phosphogypsum-based imitation marble 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, ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/14C04B41/61B28B11/24
CPCY02W30/91
Inventor 向前勇杨永彬杨步雷王伟刘小成胡新菊李泽钢
Owner GUIZHOU KAILIN GRP CO LTD
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