Preparation method of diatomite tailing thermal insulation coating

A technology for thermal insulation coatings and diatomite tailings, which is applied in fire-resistant coatings, coatings, etc., to achieve significant social benefits, overcome ecological problems, and achieve high-value utilization.

Pending Publication Date: 2021-10-19
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the current heat insulation problems of high-temperature equipment and pipelines, reducing the indoor temperature of high-temperature equipment areas in factories, solving the heat dissipation problems of pipeline transportation, alleviating high-temperature pollution, and energy-saving issues, an effective method for treating silica tailings is proposed, which is for the treatment of diatomite Tailings offer a new technological solution

Method used

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  • Preparation method of diatomite tailing thermal insulation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Mix 60 parts of 100-mesh diatomite tailings, 30 parts of bauxite, and 10 parts of floating beads to make mixed aggregate powder. After dispersing 8 parts of phosphoric acid, 4 parts of attapulgite, and 0.5 parts of sodium hexametaphosphate with water, add 0.5 parts of reinforcing agent, appropriate amount of water and mixed aggregate powder, and mix uniformly to form a paste coating. Algae tailings thermal insulation coating.

[0017] Diatom tailings thermal insulation coating also has good physical and chemical properties: after the coating is naturally dried, the surface appearance is good and there is no crack; The suspension rate of the paint is 97.5%; the relative viscosity is 1.56; the surface dry time and solid dry time of the paint are 30min and 147min respectively. The thermal insulation coating prepared from diatom tailings thermal insulation coating has good heat resistance: when the service temperature is 285°C and the coating thickness is 8mm, the best hea...

Embodiment 2

[0019] Mix 100 parts of diatomite tailings over 100 meshes, 50 parts of calcined kaolin and 15 parts of floating beads to make mixed aggregate powder. After dispersing 15 parts of aluminum dihydrogen phosphate, 8 parts of bentonite, and 1 part of sodium hexametaphosphate with water, add 1 part of reinforcing agent, an appropriate amount of water and mixed aggregate powder, and stir evenly to form a paste coating, which is prepared after packaging. Diatom tailings insulation coating.

[0020] Diatom tailings thermal insulation coating also has good physical and chemical properties: after the coating is naturally dried, the surface appearance is good and there is no crack; The suspension rate of the paint is 97.8%; the relative viscosity is 1.58; the surface dry time and hard dry time of the paint are 31min and 150min respectively. The thermal insulation coating prepared from diatom tailings thermal insulation coating has good heat resistance: when the service temperature is 28...

Embodiment 3

[0022] Mix 100 parts of diatomite tailings over 100 meshes, 50 parts of calcined kaolin and 15 parts of floating beads to make mixed aggregate powder. Add 15 parts of water glass, 8 parts of bentonite, and 1 part of sodium hexametaphosphate to disperse evenly with water, add 1 part of reinforcing agent, appropriate amount of water and mixed aggregate powder, and stir evenly to form a paste coating, which is prepared into diatoms after packaging Tailings insulation coating.

[0023] Diatom tailings thermal insulation coating also has good physical and chemical properties: after the coating is naturally dried, the surface appearance is good and there is no crack; The suspension rate of the paint is 98.0%; the relative viscosity is 1.58; the surface dry time and hard dry time of the paint are 31min and 150min respectively. The thermal insulation coating prepared from diatom tailings thermal insulation coating has good heat resistance: when the service temperature is 285°C and th...

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Abstract

A preparation method of a diatomite tailing thermal insulation coating relates to a tailing high-value utilization method, and comprises the following preparation processes of: uniformly dispersing a dispersant and an inorganic binder in water, adding a suspending agent, adding the solution into diatomite tailings, an auxiliary aggregate, a thermal insulation filler and a reinforcing agent which are proportioned and mixing well, adding water and mixing to obtain paste and / or slurry, and packaging the paste and / or slurry to obtain the diatomite tailing thermal insulation coating. The invention provides a method for effectively treating diatomite tailings, and a new technical scheme is provided for treating diatomite tailings. According to the invention, the tailings are fully utilized, so that the ecological environment problem caused by tailings heap can be overcome, the tailings are turned into wealth, meanwhile, direct economic benefits can be brought, and the social benefits are significant.

Description

technical field [0001] The invention relates to a high-value utilization method of diatomite tailings, in particular to a method for preparing thermal insulation coatings from diatomite tailings. Background technique [0002] Diatomite is formed by marine microorganisms after hundreds of millions of years of deposition. It has a large number of nano-scale voids inside. These nano-scale voids have a strong adsorption capacity, which can effectively absorb harmful gases in the air and automatically adjust the air humidity. Improving our living environment has an obvious effect. The advantages of diatomite are gradually recognized by people, so products such as diatom mud, diatom paint, and diatom bricks were born. However, this type of product has high requirements on the activity and impurity content of raw materials, and only high-quality diatomite can be used as raw material for production, which makes diatomite tailings with poor activity and high impurity content unusable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/61
CPCC09D1/00C09D7/61C09D5/18
Inventor 曹大力郑向阳李高旗蒋常虎车雨晗袁碧隆徐世欣
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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