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Method for preparing iron red hybrid pigment with far-infrared emission function by utilizing iron tailings

A technology of far-infrared emission and iron tailings, applied in the direction of fibrous fillers, etc., can solve the problems of tourmaline-enhanced iron red pigment far-infrared emission performance, etc., achieve the effect of abundant reserves and reduced synthesis cost

Active Publication Date: 2020-12-25
天津凤梧云科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that the research on the far-infrared emission performance of tourmaline-enhanced materials has just started, there is no report on the use of tourmaline to enhance the far-infrared emission performance of iron red pigments.

Method used

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  • Method for preparing iron red hybrid pigment with far-infrared emission function by utilizing iron tailings
  • Method for preparing iron red hybrid pigment with far-infrared emission function by utilizing iron tailings
  • Method for preparing iron red hybrid pigment with far-infrared emission function by utilizing iron tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Mix 2.0g of iron tailings powder, 0.022mol of ferric chloride, and 1.2mL of ethanol into a paste, transfer to a ball mill and mill for 1 hour, then pass all the obtained dry powder through a 400-mesh sieve, and disperse in 60mL of deionized In water, after fully stirring (3500r / min, 2h) and ultrasonic (1h) dispersion, add 2g sodium hydroxide, 1mL ammonia water (ammonia water mass fraction: 28wt.%; total alkali molarity: 0.0648mol), at 4500r / min Stir vigorously at a rotating speed for 30 minutes, add 0.01 g of tourmaline powder, continue stirring (3000 r / min) and ultrasonication for 1 hour each to obtain a uniform suspension, transfer the suspension to a hydrothermal reactor, react at 160°C for 24 hours, and cool naturally to After room temperature, centrifuge, wash, dry, grind, and pass through a 300-mesh sieve to obtain a bright red iron red hybrid pigment with far-infrared emission performance.

[0024] The particle diameter of gained pigment is 260nm, is t...

Embodiment 2

[0025] Example 2: 3.0g of iron tailings powder, 0.055mol of ferric chloride, and 1.5mL of ethanol were adjusted into a paste, transferred to a ball mill for ball milling for 1.5h, and then all the obtained dry powder was passed through a 400-mesh sieve and dispersed in a deionized In water, after fully stirring (3500r / min, 2h) and ultrasonic (30min), add 5mL ammonia water (ammonia water mass fraction: 28wt.%), 2g sodium metasilicate (total alkali molar mass: 0.0845mol), and use 5000r / min After stirring vigorously for 30 minutes, add 0.005 g of tourmaline powder, continue stirring (2000 r / min, 2 h) and ultrasonic (1 h) to obtain a uniform suspension, transfer the suspension to a hydrothermal reaction kettle, and react at 180 ° C for 12 h. After naturally cooling to room temperature, centrifuging, washing, drying, grinding, and passing through a 300-mesh sieve to obtain a bright red iron red hybrid pigment with far-infrared emission performance.

[0026] The particle size of the...

Embodiment 3

[0027]Example 3: Mix 4.0g of iron tailings powder, 0.048mol of ferric chloride, and 2.0mL of ethanol into a paste, transfer to a ball mill and mill for 2.5 hours, then pass the obtained dry powder through a 400-mesh sieve, and disperse it in deionized water After fully stirring (3500r / min, 2h) and ultrasound (1h), add 4g sodium hydroxide, 2g hexamethylenetetramine (total base molar weight: 0.114mol), stir vigorously at 4800r / min for 45min and then add 0.0025g tourmaline powder, continue to stir (2000r / min) and ultrasonic for 2 hours each to obtain a uniform suspension, transfer the suspension to a hydrothermal reaction kettle, react at 140°C for 48 hours, cool naturally to room temperature, centrifuge and wash , drying, grinding, and passing through a 300-mesh sieve to obtain a bright red iron red hybrid pigment with far-infrared emission properties.

[0028] The particle size of the obtained pigment is 150nm, the infrared emissivity is as high as 0.90 (infrared wavelength: 10...

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Abstract

The invention discloses a method for preparing an iron red hybrid pigment with a far infrared emission function by using iron tailings. The method comprises the following steps: mixing iron tailings,ferric salt and ethyl alcohol, and ball-milling to obtain powder; adding the powder into water to obtain first turbid liquid, and adding tourmaline nano-particles after stirring acutely to obtain second turbid liquid; converting the second turbid liquid into a hydrothermal reaction kettle, reacting for 4 to 48 h under the condition of 140 to 200 DEG C, naturally cooling to room temperature, then centrifuging, washing, drying, grinding and sieving to obtain the iron red hybrid pigment with the far infrared emission function. The iron red hybrid pigment is greener in synthetic raw material and lower in preparation cost, and a new path is developed for recycling and high value-added functionalization of urgently utilized iron tailings with rich reserves in our country.

Description

technical field [0001] The invention relates to a preparation method of iron red hybrid pigment with far-infrared emission function, in particular to a method for preparing iron red hybrid pigment with far-infrared emission function by using iron tailings, which belongs to iron tailings deep processing and nanocomposite materials Preparation technology field. Background technique [0002] Iron red pigment is a common inorganic pigment with high hiding power and coloring power, and is green and safe. It is widely used in coatings, building materials, plastics, ceramics and rubber. In recent years, with the increasing awareness of energy saving and environmental protection, coatings with far-infrared emission properties have attracted more and more attention, especially special functional energy-saving coatings with strong emissivity (>0.9) and corrosion resistance. Iron tailings are the main component of industrial solid waste, with SiO 2 、Al 2 o 3 , Fe 2 o 3 , CaO, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/00
Inventor 田光燕巩林林梁金生孟军平
Owner 天津凤梧云科技有限公司