Fiber cement product and production method thereof

A fiber cement and production method technology, applied in the field of fiber cement products, can solve problems such as increasing the cost of building materials, and achieve the effect of ensuring high-efficiency operation

Inactive Publication Date: 2018-03-16
中晶蓝实业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method directly uses cement as a raw material, which greatly increases the cost of building materials

Method used

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  • Fiber cement product and production method thereof
  • Fiber cement product and production method thereof
  • Fiber cement product and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0067] Magnesium oxide powder is added to alkaline wastewater to make a desulfurizer, and sent to the desulfurization tower. The flue gas (with an oxygen content of 18vol%) enters the desulfurization tower from the flue gas inlet of the desulfurization tower, and after passing through three absorption spray layers, the sulfur dioxide gas is fully absorbed by the desulfurizer. After the desulfurizer absorbs sulfur dioxide, it forms an absorption product containing magnesium sulfate (at a temperature of 30°C and a density of 1.2t / m 3 ), is introduced into the slurry circulation tank in the lower part of the desulfurization tower by gravity. The slurry in the upper part of the slurry circulation tank in the tower is sent to the three absorption spray layers respectively, and the circulation volume of the three accounts for 50vt% of the total output. The pH of the slurry in the lower part of the slurry circulation tank in the tower reaches 6.5, and then it is discharged to the st...

Embodiment 1

[0073] The flue gas treatment slurry that Preparation Example 1 gained, the steel slag that collects from steel mill (specific surface area is 500m 2 / kg), fly ash from a coal-fired boiler, magnesium oxide, fibers and additives were mixed and stirred for 30 minutes to obtain a mixture. The mixture was made into a preform, maintained at a temperature of 30°C and a humidity of 60% for 10 hours, demolded and sanded to obtain a fiber cement product. See Table 3 for recipes. See Table 4 for performance test results.

[0074] Table 3. Formula of fiber cement products

[0075] Specification

Flue gas treatment slurry

Slag

fly ash

magnesium oxide

additive

fiber

kg

60

15

15

10

1

10

[0076] Table 4. Properties of fiber cement products

[0077]

[0078]

Embodiment 2

[0080] Except adopting the prescription of Table 5, all the other conditions are identical with embodiment 1. See Table 6 for performance test results.

[0081] Table 5. Formula of fiber cement products

[0082] Specification

Flue gas treatment slurry

Slag

fly ash

magnesium oxide

additive

fiber

kg

65

15

20

10

1

5

[0083] Table 6. Properties of fiber cement products

[0084] serial number

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Abstract

The invention discloses a fiber cement product and a production method thereof. The production method includes following steps: (1), adopting a desulfurizing agent to absorb sulfur dioxide in flue gasthrough a wet process so as to form flue gas treatment paste, wherein the desulfurizing agent is size formed by magnesium oxide and industrial wastewater; (2), mixing the flue gas treatment paste, solid waste, magnesium oxide, fiber and additive to form a mixture, wherein a weight ratio of the flue gas treatment paste, the solid waste, the magnesium oxide, the fiber and the additive of 50-80:25-38:3-25:5-20:0.1-15; (3), subjecting the mixture to blank making and maintaining to obtain the fiber cement product. By the method, pollutants like sulfur dioxide in flue gas can be eliminated, and theproblem of treating industrial wastewater and the problem of recycling industrial waste residue and building waste can be solved.

Description

technical field [0001] The invention relates to a fiber cement product and a production method thereof, in particular to a method for directly using flue gas treatment by-products to produce fiber cement products, and the fiber cement products obtained therefrom. Background technique [0002] Throughout the development of the construction industry at home and abroad, thermal insulation has always been the most effective measure to achieve building energy conservation. At present, the commonly used thermal insulation material in China is polystyrene foam board. The material has low strength during use, is easily broken, is difficult to reuse, causes serious environmental pollution, and is expensive. Cement fiberboard has become a hot spot of building energy-saving materials due to its advantages of high durability, no pollution and convenient construction. [0003] As the solid waste with the largest discharge volume, industrial waste residues cause enormous pollution to th...

Claims

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Application Information

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IPC IPC(8): C04B28/10B01D53/50B01D53/82C04B111/28
CPCC04B28/105B01D53/508B01D53/82B01D2251/402B01D2258/0283C04B2111/28C04B2201/20C04B2201/50C04B18/062C04B18/142C04B18/08C04B18/26C04B22/16C04B14/42C04B18/24
Inventor 童裳慧
Owner 中晶蓝实业集团有限公司
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