Water-tolerant type magnesium phosphate cement-based material and preparation method thereof

A magnesium phosphate cement, water-resistant technology, applied in the field of cementitious materials, can solve the problems of poor water resistance, easy to be eroded by water, enlarged pores of the matrix, etc. Effect

Inactive Publication Date: 2017-10-03
常州市万昌化工有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology involves utilizing wastes containing both phosporous (P) or organophilically bound P2O5), ammoniacal acids, iron salts, chromite, etc., along with residual liquors left over after purification processes like flushing out heavy metals during production process. By mixing them together at specific temperatures for reaction, new chemical compositions can be created without losing their effectiveness due to poor hydrability caused by insufficient addition of certain ingredients such as lime or gypsum. These novel products have improved properties compared to existing alternatives but they still maintain good performance when mixed properly.

Problems solved by technology

This patented problem addressed in this patents relates to improving the properties of magnetically hardened calcium phosphosilicate compositions used in construction or repairing works due to their ability to resist attack caused by various substances such as acids, bases, dyes, salts, etc., while also being able to maintain sufficient mechanical integrity even after they have been exposed over time through environmental factors like rainwater.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Water-tolerant type magnesium phosphate cement-based material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] First, collect the waste water of the phosphoric acid plant and the excess sludge of the domestic sewage treatment plant, and mix the waste water of the phosphoric acid plant and the excess sludge of the domestic sewage treatment plant in an equal mass ratio to obtain a mixture. , stirring reaction for 1h; after the stirring reaction is over, filter and separate to obtain the filtrate, dropwise add sodium sulfide solution with a mass fraction of 20% to the filtrate until no more precipitation is produced in the filtrate, filter to remove the precipitation, and obtain secondary Filtrate; add the secondary filtrate to calcium hydroxide powder in a mass ratio of 5:1, stir and react for 10 minutes to obtain a mixed suspension, then add the mixed suspension to anhydrous ethanol in a mass ratio of 1:2, and continue to stir and react for 1h , filter to obtain a filter cake, which is a compound phosphoric acid compound; the compound phosphoric acid compound, plant polyphenols an...

example 2

[0027]First, collect the wastewater from the phosphoric acid plant and the remaining sludge from the domestic sewage treatment plant, mix the wastewater from the phosphoric acid plant and the remaining sludge from the domestic sewage treatment plant in an equal mass ratio to obtain a mixture, put the mixture into a reaction kettle, and heat up to 75°C , stirred and reacted for 2 hours; after the stirred reaction was completed, filtered and separated to obtain the filtrate, a sodium sulfide solution with a mass fraction of 20% was added dropwise to the filtrate until no more precipitates were produced in the filtrate, and the precipitate was removed by filtration to obtain the second Filtrate: add the secondary filtrate to the calcium hydroxide powder according to the mass ratio of 5:1, stir and react for 13 minutes to obtain a mixed suspension, then add the mixed suspension into absolute ethanol according to the mass ratio of 1:2, and continue to stir and react for 2 hours , fi...

example 3

[0029] First, collect the wastewater from the phosphoric acid plant and the remaining sludge from the domestic sewage treatment plant, mix the wastewater from the phosphoric acid plant and the remaining sludge from the domestic sewage treatment plant in an equal mass ratio to obtain a mixture, put the mixture into a reaction kettle, and heat up to 80°C , stirred and reacted for 2 hours; after the stirred reaction was completed, filtered and separated to obtain the filtrate, a sodium sulfide solution with a mass fraction of 20% was added dropwise to the filtrate until no more precipitates were produced in the filtrate, and the precipitate was removed by filtration to obtain the second Filtrate: add the secondary filtrate to the calcium hydroxide powder according to the mass ratio of 5:1, stir and react for 15 minutes to obtain a mixed suspension, then add the mixed suspension into absolute ethanol according to the mass ratio of 1:2, and continue to stir and react for 2 hours , f...

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

No PUM Login to view more

Abstract

The invention discloses a water-tolerant type magnesium phosphate cement-based material and a preparation method thereof, and belongs to the field of cementitious materials. The water-tolerant type magnesium phosphate cement-based material provided by the invention is prepared from magnesium oxide, a complex phosphate compound, borax, a sodium silicate solution, a fermentation filtrate, fluorocarbon emulsion and water; and the fermentation filtrate is prepared by fermenting egg yolk and duck livers and filtering a fermentation product. The water-tolerant type magnesium phosphate cement-based material and the preparation method have the beneficial effects that through waste utilization, the complex phosphate compound with a hydrophobic surface is prepared by using phosphoric acid plant waste water rich in phosphoric acid and phosphorus-containing excess sludge of a domestic sewage treatment plant, and then is treated by surface modification by using plant polyphenol rich in aromatic groups under the action of microorganisms, so that the water tolerance of the magnesium phosphate cement-based material is further improved; by adding the sodium silicate solution, the fermentation filtrate rich in nitrogen, phosphorus and sulphur elements and the fluorocarbon emulsion in cement raw materials, the water tolerance of the magnesium phosphate cement-based material is improved again, and the matrix strength is improved at the same time.

Description

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

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
Owner 常州市万昌化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap