Unlock instant, AI-driven research and patent intelligence for your innovation.

A paper-faced gypsum board with purification function and its preparation method

A technology of gypsum board and phosphogypsum, which is applied to ceramic products, household utensils, and other household utensils, and can solve the problems of secondary release of pollution and harm to human health.

Active Publication Date: 2021-09-21
BEIJING NEW BUILDING MATERIALS PLC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simple adsorption can reduce the formaldehyde content in a short period of time, but there is a problem of secondary release of pollution sources after adsorption saturation, so this application aims to solve the problem of formaldehyde re-released into the air after adsorption saturation in the plasterboard, which is harmful to human health The problem

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 paper-faced gypsum board with purification function and its preparation method
  • A paper-faced gypsum board with purification function and its preparation method
  • A paper-faced gypsum board with purification function and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The harmless treatment of phosphogypsum to prepare phosphogypsum powder, the specific steps are as follows:

[0043] Step 1: Use quicklime powder to adjust the pH value of the phosphogypsum to neutral or slightly alkaline, preferably 7.2, and the amount of quicklime added is 0.6% of the mass of the phosphogypsum.

[0044] Step 2: Calcining the neutralized phosphogypsum at 160° C. for 2 hours in a horse boiling furnace and cooling. Ball mill for 5 minutes and pass through a 100-mesh sieve.

[0045] Step 3: Zeolite modification treatment: 350W power, microwave radiation for 9min.

[0046] Step 4: Add zeolite to the phosphogypsum powder, the weight ratio of phosphogypsum powder to zeolite is 100:2, and fully mix and stir. After aging for 48 hours, harmless phosphogypsum powder was obtained.

Embodiment 2

[0048] The harmless treatment of phosphogypsum to prepare phosphogypsum powder, the specific steps are as follows:

[0049] Step 1: Use quicklime powder to adjust the pH value of the phosphogypsum to neutral or slightly alkaline, preferably 6.8, and the amount of quicklime added is 0.2% of the mass of the phosphogypsum.

[0050] Step 2: Calcining the neutralized phosphogypsum at 180° C. for 2 hours in a horse boiling furnace and cooling. Ball mill for 5 minutes and pass through a 100-mesh sieve.

[0051] Step 3: Zeolite modification treatment: 400W power, microwave radiation for 6min.

[0052] Step 4: Add zeolite to the phosphogypsum powder, the weight ratio of phosphogypsum powder to zeolite is 100:5, and fully mix and stir. After aging for 48 hours, harmless phosphogypsum powder was obtained.

Embodiment 3

[0054] The harmless treatment of phosphogypsum to prepare phosphogypsum powder, the specific steps are as follows:

[0055] Step 1: Use quicklime powder to adjust the pH value of the phosphogypsum to neutral or slightly alkaline, preferably 7.8, and the amount of quicklime added is 0.8% of the mass of the phosphogypsum.

[0056] Step 2: Calcining the neutralized phosphogypsum at 190° C. for 2 hours in a horse boiling furnace and cooling. Ball mill for 5 minutes and pass through a 100-mesh sieve.

[0057] Step 3: Zeolite modification treatment: 468W power, microwave radiation for 4min.

[0058] Step 4: Add zeolite to the phosphogypsum powder, the weight ratio of phosphogypsum powder to zeolite is 100:9, and fully mix and stir. After aging for 48 hours, harmless phosphogypsum powder was obtained.

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
lengthaaaaaaaaaa
diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The present application discloses a gypsum board. The raw materials of the gypsum board include: 0.2-1.0 parts by weight of component A, 5-20 parts by weight of component B, wherein component A is a zeolite-supported aldehyde netting agent, Component B is a mixture of phosphogypsum and modified zeolites. The preparation of the paper-faced gypsum board utilizes part of the phosphogypsum to replace the desulfurized gypsum. And the paper-faced gypsum board can effectively absorb formaldehyde and purify formaldehyde.

Description

technical field [0001] The construction field of this application particularly relates to but is not limited to a paper-faced gypsum board and a preparation method thereof. Background technique [0002] Phosphogypsum is an industrial by-product of the process of preparing phosphoric acid by wet method. About 5 tons of phosphogypsum are produced for every ton of phosphoric acid produced. At present, the accumulated stock of phosphogypsum in my country has exceeded 300 million tons. The annual cost of phosphogypsum stacking is as high as several million yuan. Because phosphogypsum contains harmful substances, its massive discharge will not only increase the cost, occupy a large area for stacking, but also pollute the environment and bring harm to human health and the ecological environment. Therefore, it is necessary to eliminate the influence of harmful impurities in phosphogypsum, improve its particle structure, and develop resource utilization methods. [0003] Paper-face...

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): C04B28/14C04B38/02C04B38/10C04B11/26
CPCC04B11/26C04B28/145C04B2111/00025C04B2111/0062C04B14/42C04B22/106C04B24/287C04B24/38C04B14/047C04B14/383C04B38/02
Inventor 尹东杰简铭武发德王鹏起谭丹君王莹何亮
Owner BEIJING NEW BUILDING MATERIALS PLC