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

A kind of preparation method of nano desulfurization gypsum artificial board

A technology for desulfurizing gypsum and wood-based panels, applied in the field of wood-based panels, can solve problems such as occupying land and polluting the environment, and achieve the effects of low cost, enhanced water resistance, and improved quality

Inactive Publication Date: 2020-12-01
新疆昌吉职业技术学院
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only takes up a lot of land, but also seriously pollutes the environment [Xi Meiyun. Comprehensive Utilization of Phosphogypsum [J]. Environmental Science and Technology, 2001, (3): 10-13]

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
  • A kind of preparation method of nano desulfurization gypsum artificial board
  • A kind of preparation method of nano desulfurization gypsum artificial board
  • A kind of preparation method of nano desulfurization gypsum artificial board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with specific examples.

[0019] After adding microorganisms to the desulfurized gypsum, adding a chloride ion stabilizer to obtain pretreated desulfurized gypsum; recrystallizing the pretreated desulfurized gypsum to obtain spherical hemihydrate gypsum crystals. Table 1 lists 18 pretreatment examples numbered 1-18.

[0020] Table 1

[0021]

[0022]

[0023] A surfactant, a hydraulic gelling material, a hydrophobic agent, and a setting retarder are added to the hemihydrate gypsum crystals, and the dry powder is obtained after mixing evenly. Table 2 lists 18 examples of dry powder formulations numbered 1-18.

[0024] Table 2,

[0025]

[0026] Add a solvent to the dry powder, stir evenly, pour it into a model covered with mesh cloth, and after curing in a curing room, demould to obtain a nano-desulfurized gypsum wood-based panel. Table 3 lists 18 examples of wood-based panel mold...

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
strengthaaaaaaaaaa
water absorptionaaaaaaaaaa
Login to View More

Abstract

The patent discloses a preparation method of a nano desulfurization gypsum artificial board. The method includes: 1) adding microorganisms to the desulfurization gypsum for treatment, and adding a chlorine ion stabilizer to prepare pretreated desulfurization gypsum; 2) recrystallizing the pretreated desulfurization gypsum to obtain quasi-spherical hemihydrate gypsum crystal; 3) adding a surfactant, a hydraulic cementing material, a water repellent agent, and a retarder to the hemihydrate gypsum crystal with uniform mixing to obtain dry powder; 4) adding a solvent to the dry powder, uniformly stirring the mixture, pouring the mixture into a mould in which a gridding cloth is laid; 5) maintaining the mixture in a maintenance chamber, and demolding the mixture to produce the nano desulfurization gypsum artificial board. The method utilizes industrial wastes and is high in product additional value.

Description

technical field [0001] The invention relates to a wood-based panel, in particular to a preparation method of the wood-based panel. Background technique [0002] More than 75% of my country's energy comes from burning coal. Extensive use of coal leads to SO 2 emissions increase, among which, flue gas SO from coal-fired power plants 2 Emissions account for about SO 2 50% of total emissions. To limit SO 2 coal-fired power plants all over the world have installed flue gas desulfurization devices. At present, the limestone-gypsum wet process with simple principle, mature technology and high-efficiency desulfurization is generally used for flue gas desulfurization. A large amount of flue gas desulfurization gypsum will be produced during the process of removing sulfur in the flue gas by using the limestone-gypsum wet process. [0003] In 2013, my country's flue gas desulfurization gypsum was 75.5 million tons. It is estimated that by 2020, my country's annual output of desul...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B11/26
CPCC04B11/26C04B28/142C04B2111/00017C04B2201/50C04B2103/40C04B2103/65C04B2103/22C04B7/34C04B7/24C04B7/14C04B7/28
Inventor 谭宏斌吴孟红杨振海方万伟王雷贺小春
Owner 新疆昌吉职业技术学院
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