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Method for preparing thermal insulation material by utilizing silica gel wastewater

A technology for thermal insulation materials and wastewater, applied in the field of thermal insulation materials, can solve the problems of insufficient stability and easy falling off of thermal insulation materials, and achieve the effects of realizing the utilization of wastewater resources, reducing environmental pollution, and inhibiting expansion and connectivity.

Inactive Publication Date: 2017-12-22
常州鼎众冷暖设备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing thermal insulation materials by using silica gel waste water to solve the problems of insufficient stability and easy falling off of the current thermal insulation materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] The surfactant is disodium lauryl sulfosuccinate monoester.

[0023] The dispersant is sodium tripolyphosphate.

[0024] The present invention utilizes silica gel waste water to prepare the method for insulation material, comprises the following steps:

[0025] (1) According to the mass ratio of 8:1:1, put silica gel waste water, calcium oxide, and aluminum chloride into the reaction kettle, and react at a pressure of 1.2MPa and a temperature of 100°C. After cooling, collect the reactants and put the reaction The material is put into a container, and the container is placed at a temperature of 5°C for energization, with a current of 10 mA, energized for 20 minutes, filtered, and the filter residue collected;

[0026] (2) Calcinate the filter residue at a temperature of 500°C. After cooling, collect the calcined product, put the calcined product into a ball mill, and add 2% surfactant of the calcined product to the ball mill for ball milling to obtain a ball milled prod...

example 2

[0030] The surfactant was potassium monolauryl phosphate.

[0031] The dispersant is sodium hexametaphosphate.

[0032] The present invention utilizes silica gel waste water to prepare the method for insulation material, comprises the following steps:

[0033] (1) According to the mass ratio of 11:2:2, put silica gel waste water, calcium oxide, and aluminum chloride into the reaction kettle, and react at a pressure of 1.5MPa and a temperature of 105°C. After cooling, collect the reactants and put the reaction The material is put into a container, and the container is placed at a temperature of 10°C for energization, with a current of 15 mA, energized for 30 minutes, filtered, and the filter residue collected;

[0034] (2) Calcinate the filter residue at a temperature of 550°C. After cooling, collect the calcined product, put the calcined product into a ball mill, and then add 3% surfactant of the calcined product to the ball mill for ball milling to obtain a ball milled produ...

example 3

[0038] The surfactant is disodium lauryl sulfosuccinate monoester.

[0039] The dispersant is sodium pyrophosphate.

[0040] The present invention utilizes silica gel waste water to prepare the method for insulation material, comprises the following steps:

[0041] (1) According to the mass ratio of 9:1.5:1.5, put silica gel waste water, calcium oxide, and aluminum chloride into the reactor, and react at a pressure of 1.3MPa and a temperature of 103°C. The material is put into a container, and the container is placed at a temperature of 7°C for energization, with a current of 13 mA, energized for 25 minutes, filtered, and the filter residue collected;

[0042] (2) Calcinate the filter residue at a temperature of 525°C. After cooling, collect the calcined product, put the calcined product into a ball mill, and then add 2.5% surfactant of the calcined product to the ball mill, and ball mill to obtain a ball milled product ;

[0043] (3) In parts by weight, put 125 parts of wa...

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Abstract

The invention discloses a method for preparing a thermal insulation material by utilizing silica gel wastewater, and belongs to the field of heat insulation materials. The method comprises the following steps: putting the silica gel wastewater, calcium oxide and aluminum chloride into a reaction kettle for reaction to obtain reactants; cooling and collecting the reactants; putting the reactants into a container and electrifying the container, filtering and collecting filter residues; calcinating the filter residues at temperature of 500 to 550 DEG C; cooling and collecting calcined materials; putting the calcined materials into a ball mill; then adding surfactant into the ball mill and carrying out ball milling to obtain a ball mill material; putting water, the ball mill material, magnesium phosphate, dispersants, hydroxypropyl methylcellulose and sodium carbonate into the container, and mixing, standing and stirring to obtain a stirred mixture; pouring the stirred mixture into a mould; squeezing and screeding the stirred mixture; then putting the mould into a drying oven and drying the mould; cooling the mould; collecting a dried material to obtain the thermal insulation material prepared by utilizing the silica gel wastewater. The method disclosed by the invention has the beneficial effects that the thermal insulation material disclosed by the invention has a good thermal insulation effect, is strong in stability and is worthy of being popularized.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a method for preparing thermal insulation materials by utilizing silica gel waste water. Background technique [0002] In the catalyst production process of the petrochemical industry, a large amount of silicon-containing wastewater with high pH (pH value above 11) is produced in the molecular sieve workshop, and the silicate contained in it is represented by SiO 2 The meter can be as high as 2.0~4.0%, and it is quite stable. These wastewaters are generally alkaline. If they are directly discharged into natural water bodies, as the pH decreases, the SiO 2 Gel or flocs sink out to form white water, pollute water bodies, and block waterways. [0003] Insulation materials refer to new materials that can improve insulation performance, save resources and reduce environmental pollution. At present, there are many kinds of thermal insulation materials used on building wal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B111/27C04B111/76
Inventor 刘蓉凤刘沁
Owner 常州鼎众冷暖设备工程有限公司
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