Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Slope protection base material adopting phosphorous gypsum and preparation method thereof

A technology for slope protection and phosphogypsum is applied in the field of comprehensive utilization of phosphorus chemical by-products, which can solve problems such as the reuse of phosphogypsum, and achieve the effects of low cost, low energy consumption and high resource utilization rate.

Active Publication Date: 2019-10-22
YUNNAN PHOSPHATE CHEM GROUP CORP
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a slope protection base material using phosphogypsum and its preparation method, to solve the problem of reusing phosphogypsum, and to prepare a high-strength slope protection base material that is conducive to plant growth

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 100 g of phosphogypsum, add 0.1 g of calcium chloride and 0.1 g of sodium sulfate, steam and cure at 100° C. for 30 min at a pressure of 0.1 MPa, and prepare α gypsum after grinding. After testing, the alpha gypsum has a 2h wet flexural strength of 8.1MPa and a 3d compressive strength of 52.5MPa.

[0025] Weigh 1 part of α gypsum, 2 parts of soil, 3 parts of water, and 0.2 parts of grass seeds by weight, mix them evenly into a slurry, and spray them on the slope. Under the environment of temperature of 5℃ and humidity of 70%, curing for 30 days, the slope stability is good, and the greening rate reaches 91.3%.

Embodiment 2

[0027] Take 100 g of phosphogypsum, add 0.1 g of sodium lauryl sulfate and 0.2 g of potassium succinate, steam and cure at 110° C. for 60 min at a pressure of 0.15 MPa, and prepare α gypsum after grinding. After testing, the α gypsum has a 2h wet flexural strength of 8.3MPa and a 3d compressive strength of 53.6MPa.

[0028] Weigh 1 part of α gypsum, 3 parts of soil, 4 parts of water, and 0.3 parts of grass seeds by weight, mix them evenly into a slurry, and spray them on the slope. Under the environment of temperature of 10℃ and humidity of 75%, curing for 32 days, the slope stability is good, and the greening rate reaches 91.8%.

Embodiment 3

[0030] Take 100 g of phosphogypsum, add 0.2 g of potassium chloride and 0.3 g of urea phosphate, and steam and cure at 120° C. for 90 min at a pressure of 0.2 MPa, and prepare α gypsum after grinding. After testing, the alpha gypsum has a 2h wet flexural strength of 8.6MPa and a 3d compressive strength of 54.3MPa.

[0031] Weigh 1 part of α gypsum, 4 parts of soil, 5 parts of water, and 0.4 parts of grass seeds by weight, mix them evenly into a slurry, and spray them on the slope. Under the environment of temperature of 15℃ and humidity of 80%, curing for 34 days, the slope stability is good, and the greening rate reaches 92.3%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Flexural strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a slope protection base material adopting phosphorous gypsum and a preparation method thereof, and relates to the technical field of comprehensive utilization of phosphorus chemical by-products. The method comprises the following steps: using slag disposal pit phosphorous gypsum as a raw material, adding a crystal modifier, adopting low-temperature dry method to directly prepare alpha high-strength gypsum, ensuring that 2h wet flexural strength of the alpha high-strength gypsum is higher than 8Mpa, the 3d compressive strength is higher than 50Mpa, and the alpha 50 degree in JC / T2038-2010 is met. The slope protection base material has the advantages that the alpha gypsum, soil and water are mixed according to certain ratio, grass seeds are added, the materials are uniformly mixed and are sprayed to a mine land reclamation slope, the slope protection base material has good slope protection effect while performing greening, and is low in cost. A solidified layer israpidly formed after the adding of the alpha gypsum, water leakage is prevented, the slope protection base material has good water retention effect, meanwhile the alpha gypsum contains plant nutrientelements, such as phosphorus, fluorine and silicon, the added crystal modifier has certain fertilizer efficiency effect in the soil, and experimental comparison shows that growing plant is high in greening rate after solidification through the adding of the alpha gypsum.

Description

Technical field [0001] The invention relates to the technical field of comprehensive utilization of phosphorous chemical by-products, in particular to a side slope protection substrate using phosphogypsum and a preparation method thereof. Background technique [0002] The main component of phosphogypsum is calcium sulfate dihydrate, which is a by-product in the production of wet-process phosphoric acid. In recent years, nearly 50 million tons of phosphogypsum have been newly stockpiled in my country each year, and the utilization rate in 2018 was only 39.7%. The total stockpiled amount currently exceeds 300 million tons. With the gradual increase in the stock of phosphogypsum, the requirements for the land occupation area are also increasing. In addition to the environmental problems such as phosphogypsum pollution that has been continuously exposed in recent years, the country has also paid more and more attention to the use of phosphogypsum. Regions where the phosphorous chemi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B11/032C04B28/14
CPCC04B11/032C04B28/146C04B2111/00155C04B2111/00732C04B14/361C04B2103/0002
Inventor 何宾宾龚丽魏立军姜威欧志兵宗世荣周琼波彭桦王学文
Owner YUNNAN PHOSPHATE CHEM GROUP CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com