Desulfurization gypsum-based thermal insulation mortar and preparation method thereof

A technology of desulfurized gypsum and thermal insulation mortar, which is applied in the field of comprehensive utilization of solid waste and building materials, can solve problems such as cracking, falling off, and easy hollowing, and achieve the effects of improving fireproof performance, low material loss, and good slip resistance

Active Publication Date: 2013-01-09
上海复培新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention uses desulfurized gypsum, a solid waste produced after flue gas desulfurization in coal-fired power plants, as the main cementitious material to prepare a desulfurized gypsum-based thermal insulation mortar, which solves the shortcomings of existing cement mortars such as easy hollowing, cracking, and falling off. , increasing the thermal insulation and fire resistance of the system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 1000kg of desulfurized gypsum, 5kg of white cement, 15kg of redispersible latex powder, 4kg of wood fiber, 10kg of sepiolite fiber, 3kg of PP fiber, 5kg of polyvinyl alcohol, 3kg of water repellent, 1.6kg of retarder, and 2kg of water reducer , thickener 3kg, put into the mortar mixer and mix evenly, then add 400kg of vitrified microbeads to mix and stir to obtain desulfurized gypsum-based thermal insulation mortar, the dry density of this desulfurized gypsum-based thermal insulation mortar is 450kg / m 3 , The compressive strength is 0.9MPa.

Embodiment 2

[0038] Take 1000kg of desulfurized gypsum, 3kg of white cement, 10kg of redispersible latex powder, 2kg of wood fiber, 20kg of sepiolite fiber, 2kg of PP fiber, 3kg of polyvinyl alcohol, 3kg of water repellent, 1.4kg of retarder, and 2kg of water reducer , thickener 3.5kg, put into the mortar mixer and mix evenly, then add 420kg of vitrified microbeads to mix and stir to obtain desulfurized gypsum-based thermal insulation mortar, the dry density of this desulfurized gypsum-based thermal insulation mortar is 430kg / m 3 , The compressive strength is 0.7MPa.

Embodiment 3

[0040] Take 1000kg of desulfurized gypsum, 5kg of white cement, 15kg of redispersible latex powder, 4kg of wood fiber, 20kg of sepiolite fiber, 3kg of PP fiber, 2kg of polyvinyl alcohol, 3kg of water repellent, 1.6kg of retarder, and 2kg of water reducer , thickener 3kg, put into the mortar mixer and mix evenly, then add 360kg of vitrified microbeads to mix and stir to obtain desulfurized gypsum-based thermal insulation mortar, the dry density of this desulfurized gypsum-based thermal insulation mortar is 480kg / m 3 , The compressive strength is 1.2MPa.

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Abstract

The invention relates to a desulfurization gypsum-based thermal insulation mortar and a preparation method of the mortar, belonging to the technical fields of solid waste comprehensive utilization and building material. The desulfurization gypsum-based thermal insulation mortar comprises the components in parts by weight: 1000 parts of desulfurization gypsum, 3-10 parts of white cement, 350-450 parts of glass beads, 5-15 parts of redispersible latex powder, 1-5 parts of wood fiber, 5-25 parts of sepiolite fiber, 1.5-5 parts of polypropylene (PP) fiber, 1-8 parts of polyvinyl alcohol, 1-5 parts of hydrophobic agent, 0.4-3 parts of retarder, 1-5 parts of water reducing agent and 2-6 parts of thickening agent. The desulfurization gypsum-based thermal insulation mortar is convenient to transport and has very strong thermal insulation performance and fireproof performance.

Description

technical field [0001] The invention relates to a desulfurized gypsum-based thermal insulation mortar and a preparation method thereof, belonging to the technical fields of solid waste comprehensive utilization and building materials. Background technique [0002] Desulfurization gypsum is a by-product of flue gas desulfurization by wet lime / limestone-gypsum method in coal-fired power plants. The treatment and comprehensive utilization of desulfurization gypsum is one of the key factors affecting the promotion of wet desulfurization technology in my country. At present, a considerable part of desulfurized gypsum is mainly stored in stockpiles, which has become the second largest solid waste in thermal power plants, which not only occupies land resources, but is also harmful to the environment. Desulfurization gypsum needs to be utilized as a resource, and choosing an appropriate treatment and disposal method for desulfurization gypsum is also a fundamental solution to SO 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
Inventor 马小翠金宜周张炎饶政发王雪苑麒陆文雄
Owner 上海复培新材料科技有限公司
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