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Method for continuously producing environment-protection light gypsum wall material by using industrial residue

A technology for industrial waste residue and wall materials, applied in chemical instruments and methods, manufacturing tools, solid waste management, etc., to achieve strong competitiveness, good economic benefits, and good sound insulation performance.

Inactive Publication Date: 2008-03-05
洪光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, although there have been many methods for the comprehensive utilization of various industrial wastes, there have been no reports on the comprehensive use of more than several types of industrial waste residues and the large-scale production of gypsum lightweight wall materials by mechanized assembly lines.

Method used

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  • Method for continuously producing environment-protection light gypsum wall material by using industrial residue
  • Method for continuously producing environment-protection light gypsum wall material by using industrial residue
  • Method for continuously producing environment-protection light gypsum wall material by using industrial residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the first step, phosphogypsum is mixed with a certain amount of lime to carry out acid-base neutralization reaction and three-stage purification is carried out in the form of backflow with clean water. The size of the purification outer tank is 3000 mm × 400 mm. Then it is centrifugally dehydrated and air-dried (at this moment, the cement retarder is made, and the content of its main element is: sulfur trioxide is greater than 40% and water of crystallization is greater than 12%). Make the attached water in phosphogypsum less than 10-15%, P 2 o 5 ≤0.3%, F≤0.1%. Add 30% natural gypsum ore to change the size and structure of the particles in the mixture to ensure the smooth flow of the mixture when entering the calcining kiln, so as to meet the production line operation requirements. Make the temperature of the calcining kiln reach 170°C-190°C again so that the mixed raw materials are composed of:

[0021]

[0022] And the attached water is less than 3%, it can s...

Embodiment 2

[0026] Embodiment 2: embodiment is identical with embodiment, repeats no more at this, and its raw material and processing step and condition are as follows:

[0027] 1. Taking phosphogypsum discharged from an enterprise in Kunming City, Yunnan Province as raw material, other chemical components (mass fraction) were tested, as shown in the table below:

[0028] Element

SO 3

CaO

SiO 2

F

Mg

Al 2 o 3

Fe 2 o 3

total

content

36.46

30.80

5.90

0.30

0.04

0.05

0.21

Element

P 2 o 5

Na 2 o

K 2 o

TiO 2

m 2 o

burn vector

100

content

1.27

0.10

0.09

0.05

0.01

24.02

[0029] 2. Clean, dehydrate and dry phosphogypsum with clear water for three times, then mix it with 30-40% natural gypsum ore, calcinate at 170°C°-190°C, and grind it to 100-150 mesh to obtain β-type building gypsum The composition of the powder has chang...

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Abstract

The present invention discloses process of producing light wall material with industrial solid waste, carbon residue, fly ash, natural gypsum, lime, cement and small amount of chemical material in a continuous production line. The production process includes the following steps: washing ardealite, adding lime for neutralizing, mixing ardealite in 70 wt% and natural gypsum in 30 wt%, dewatering, air drying, calcining, grinding, ageing and other step to prepare beta type semi-hydrated gypsum powder; mixing semi-hydrated gypsum powder, phosphate slag or carbon residue, fly ash, cement and small amount of chemical material in certain weight proportion; adding water to form slurry and forming light wall block.

Description

technical field [0001] The invention relates to a new type of lightweight wall material, in particular to a large-scale production of a new type of light weight wall material by using various industrial waste residues, certain natural gypsum ore and trace chemical raw materials through mechanized production lines. It belongs to the field of building materials. Background technique [0002] At present, there is no large-scale application of phosphogypsum, and a large number of piles have been formed in many areas, while various other industrial wastes are also increasing. polluted environment. For this reason, people are also constantly exploring new methods and new ways to effectively utilize various industrial wastes. Although there have been many methods to comprehensively utilize various industrial wastes so far, there have been no reports on the comprehensive use of more than several types of industrial waste residues and the large-scale production of gypsum lightweigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B15/00C04B28/14C04B11/02C04B11/26B28C7/04B28C5/08B28B3/12
CPCC04B2111/00017C04B2111/40C04B14/365C04B28/02Y02W30/91C04B18/145C04B22/148C04B40/0028C04B18/067C04B20/023
Inventor 洪光
Owner 洪光
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