High-activity functional diatom mud and preparation method thereof

A functional, diatom mud technology, applied in separation methods, chemical instruments and methods, climate sustainability, etc., can solve problems such as insufficient hardness, waste of resources, and increased production costs, and can solve the problems of insufficient hardness, powder loss, resource loss, etc. Not to be wasted, to ensure the effect of reasonable utilization

Inactive Publication Date: 2018-09-28
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diatom mud is favored by consumers for its safety and environmental protection, rich colors, good functional performance, and strong decoration. As of May 2017, there are more than 500 domestic brand diatom mud manufacturers, but the entire silicon On the one hand, the algae mud industry has not considered the activity of diatomite as a functional filler. Most enterprises use diatomite concentrate as a filter aid or diatomite that has lost pozzolanic activity by high-temperature calcination for diatom mud production. The production cost has been greatly increased, and serious waste of resources has been ...

Method used

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  • High-activity functional diatom mud and preparation method thereof
  • High-activity functional diatom mud and preparation method thereof
  • High-activity functional diatom mud and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Add 150 mesh of second and third grade diatomite to 60% sulfuric acid for acid leaching for 3 hours and then place it in a high temperature furnace. The anaerobic heat activation temperature is 600°C and the heat activation time is 2 hours. After cooling to room temperature, it will be activated. After the diatomaceous earth;

[0015] 2) After mixing 20mol of zinc nitrate and 1mol of citric acid, add 200mol of distilled water. Stir it evenly, and at the same time slowly drop in 20mol of absolute ethanol, then slowly drop in 2mol of ammonia water, then add 0.05mol of polyethylene glycol, and then ultrasonically treat for 60min, then put it in 80℃ water temperature Stir with magnetic flow for 5 h to obtain a suspension; mix the activated diatomaceous earth with the suspension at a molar ratio of 4:1. Mix evenly, let stand for 1 hour, dry, grind, and calcinate in a high-temperature furnace at 600°C for 2 hours to obtain diatomite / nanometer zinc oxide composite photocat...

Embodiment 2

[0018] This embodiment selects the diatomite on the market to prepare diatom ooze, is blank control group

[0019] 1) Select diatomite (calcined at a temperature above 1000°C) commonly used in the market as the functional filler;

[0020] 2) After mixing 25mol of zinc nitrate and 1mol of citric acid, add 230mol of distilled water. Stir it evenly, and at the same time slowly drop in 30mol of absolute ethanol, then slowly drop in 5mol of ammonia water, then add 0.03mol of polyethylene glycol, and then ultrasonically treat for 60min, then put it in 80℃ water temperature Stir with magnetic current for 2 hours to obtain a suspension; mix the activated diatomaceous earth with the suspension at a molar ratio of 6:1. Mix evenly, let stand for 4 hours, dry, grind, and calcinate in a high-temperature furnace at 600°C for 2 hours to obtain diatomite / nanometer zinc oxide composite photocatalytic material powder;

[0021] 3) Combine 25kg of the diatomite / nanometer zinc oxide composite ph...

Embodiment 3

[0023] In this example, the diatomaceous earth loaded with nano-zinc oxide in the common method is used to prepare diatom ooze

[0024] 1) Add 180-mesh diatomite to 40% sulfuric acid for pickling for 2 hours and place it in a high-temperature furnace. The anaerobic heat activation temperature is 600 ° C, and the heat activation time is 2 hours. After cooling to room temperature, it will be activated. After the diatomaceous earth;

[0025] 2) After mixing 25mol of zinc nitrate and 1mol of citric acid, add 280mol of distilled water. Stir it evenly, and at the same time slowly drop in 40mol of absolute ethanol, then slowly drop in 3mol of ammonia water, then add 0.05mol of polyethylene glycol, and then ultrasonically treat for 60min, then put it in 100℃ water temperature Stir with magnetic flow for 2 h to obtain a suspension; mix the activated diatomaceous earth with the suspension at a molar ratio of 5:1. Mix evenly, stand still for 5 hours, dry, grind, and calcinate in a high...

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Abstract

The invention discloses high-activity functional diatom mud and a preparation method thereof. The method comprises the following steps: performing low-temperature anaerobic heat activation treatment on ground and acid-leached second-third-grade diatomite, preparing a diatomite-supported nano zinc oxide composite photocatalytic material by adopting a combination of a sol-gel method and a negative pressure loading method to improve functional properties of the diatom mud, uniformly mixing the above prepared diatomite-based photocatalytic material, white cement, heavy calcium carbonate, talc powder, sand, sierozem, bentonite, dispersible latex powder, polypropylene fibers, polyvinyl alcohol and an antifoaming agent, adding water, and performing stirring to form paste to prepare the functionaldiatom mud. The high-activity functional diatom mud disclosed by the invention has extremely high purification efficiency on indoor air, solves the problems such as powder dropping and poor durability, and ensures rational utilization of the second-third-grade diatomite.

Description

technical field [0001] The invention discloses a high-activity functional diatom mud and a preparation method thereof, relates to a high-activity functional diatom mud used indoors and a preparation method thereof, and belongs to the technical field of indoor wall coatings. Background technique [0002] The problem of environmental pollution has become a major problem facing the whole society and needs to be solved urgently. As the value of outdoor PM2.5 continues to increase, a healthy and environmentally friendly indoor environment is particularly important. At present, people are vigorously studying the coordination between indoor air quality and the environment, and developing New materials for indoor air purification with functions and environmental protection have become a hot spot. Diatom mud is favored by consumers for its safety and environmental protection, rich colors, good functional performance, and strong decoration. As of May 2017, there are more than 500 dome...

Claims

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Application Information

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IPC IPC(8): C09D1/12C09D7/62C09D7/61C09D7/65B01D53/02B01D53/86B01D53/72
CPCB01D53/02B01D53/864B01D53/8668B01D2255/802B01D2257/7025B01D2257/7027B01D2257/708C09D1/12C09D7/61C09D7/62C09D7/65C09D7/70Y02C20/20
Inventor 肖力光庞博赵壮张艺超
Owner JILIN JIANZHU UNIVERSITY
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