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Blast furnace flue gas desulfurization building gypsum and preparation method thereof

A technology for desulfurized building gypsum and desulfurized gypsum, which is applied in the field of blast furnace flue gas desulfurized building gypsum and its preparation, can solve the problems of low strength and high water absorption of gypsum blocks, achieve high strength, reduce water absorption, and increase strength

Inactive Publication Date: 2019-01-25
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the gypsum blocks prepared from existing flue gas desulfurization building gypsum have low strength and high water absorption

Method used

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  • Blast furnace flue gas desulfurization building gypsum and preparation method thereof

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preparation example Construction

[0025] The present invention also provides a preparation method for blast furnace flue gas desulfurization building gypsum, comprising the following steps: grinding blast furnace flue gas desulfurization gypsum, ordinary Portland cement, Xigeda soil, and lime into powder according to a weight ratio of 1:0.1 to 0.15: Mix 0.2:0.2 and get it.

[0026] The present invention also provides a preparation method of blast furnace flue gas desulfurization building gypsum block, comprising the following steps: adding water to the blast furnace flue gas desulfurization building gypsum, mixing and stirring, pouring into a mold and then performing natural curing; the blast furnace smoke The weight ratio of each raw material and water in gas desulfurization building gypsum is: blast furnace flue gas desulfurization gypsum: ordinary Portland cement: Xigeda soil: lime: water = 1:0.1~0.15:0.2:0.2:0.5~0.75.

[0027] Wherein, in the preparation method of the blast furnace flue gas desulfurization...

Embodiment 1

[0035] The blast furnace flue gas desulfurization building gypsum in this embodiment includes the following raw materials: 2000 g of blast furnace flue gas desulfurization gypsum, 300 g of ordinary Portland cement, 400 g of Xigeda soil, and 400 g of lime.

[0036] The preparation method of blast furnace flue gas desulfurization building gypsum in this embodiment: mix the above raw materials evenly.

[0037] The preparation method of blast furnace flue gas desulfurization building gypsum block in this example: 2000g of blast furnace flue gas desulfurization gypsum, 300g of ordinary Portland cement, 400g of Xigeda soil, 400g of lime and 1360g of water are mixed and stirred for 30s, poured into the mold for 5min Molding and natural curing to obtain blast furnace flue gas desulfurization building gypsum blocks. The obtained blast furnace flue gas desulfurization building gypsum block is then subjected to natural curing for 28 days, and after drying in an oven, the compressive stre...

Embodiment 2

[0039] The blast furnace flue gas desulfurization building gypsum in this embodiment includes the following raw materials: 2000 g of blast furnace flue gas desulfurization gypsum, 210 g of ordinary Portland cement, 400 g of Xigeda soil, and 400 g of lime.

[0040] The preparation method of blast furnace flue gas desulfurization building gypsum in this embodiment: mix the above raw materials evenly.

[0041] The preparation method of the blast furnace flue gas desulfurization building gypsum block in this example: 2000g of blast furnace flue gas desulfurization gypsum, 210g of ordinary Portland cement, 400g of Xigeda soil, 400g of lime and 1500g of water were mixed and stirred for 45s, and then poured into the mold for 5min Molding and natural curing to obtain blast furnace flue gas desulfurization building gypsum blocks. The obtained blast furnace flue gas desulfurization building gypsum blocks were then subjected to natural curing for 28 days, and after being dried in an oven...

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Abstract

The invention belongs to the technical field of building gypsum preparation, and particularly relates to blast furnace flue gas desulfurization building gypsum and a preparation method thereof. The technical problems that a gypsum building block prepared from existing flue gas desulfurization building gypsum is low in strength and high in water absorption rate are solved. The invention provides the flue gas desulfurization building gypsum. The flue gas desulfurization building gypsum is prepared from blast furnace flue gas desulfurization gypsum, common silicate cement, xigeda soil and lime inthe weight ratio of 1:(0.1-0.15):0.2:0.2. The invention further provides a preparation method of a building block. The preparation method includes the steps that the raw materials are ground into powder, water is added, the materials are mixed and stirred, the mixture is poured into a mold and naturally maintained after mold forming, and the flue gas desulfurization building gypsum is obtained. The strength of the building block prepared from the blast furnace flue gas desulfurization building gypsum is improved, and the water absorption rate is reduced. According to the blast furnace flue gas desulfurization building gypsum, fly ash is replaced with the xigeda soil, and the cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of building gypsum preparation, and in particular relates to blast furnace flue gas desulfurization building gypsum and a preparation method thereof. Background technique [0002] The problem of acid rain in many areas of our country is very serious, and it has already caused a huge impact on our country's ecological and health problems. The direct cause of the acid rain phenomenon is that after the burning of huge amounts of coal, the exhaust gas containing a large amount of sulfur dioxide is discharged, and acid rain will form after the air contains a large amount of sulfur dioxide gas. With the rapid development of my country's economic construction, the continuous improvement of people's living standards, and the increasing awareness of environmental protection, green environmental protection has become the focus of our country's attention. The Chinese government has introduced many policies and measure...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/064C04B22/064C04B14/10
Inventor 陈伟王伟廖飞
Owner PANZHIHUA UNIV
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