Method for preparing superfine iron oxide red pigment by utilizing discarded selenium drum powdered ink

A technology of iron oxide red and toner, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve problems such as trachea and lung damage, great harm to human body, and harm to human health

Inactive Publication Date: 2012-11-28
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of toner is a particle with a particle size of 2-4 microns, which is invisible to the naked eye, but it is extremely harmful to the human body. It can directly enter the human body through the human respiratory system, causing unimaginable damage to the trachea and lungs. , especially the photosensitive material of the toner cartridge, will endanger human health

Method used

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  • Method for preparing superfine iron oxide red pigment by utilizing discarded selenium drum powdered ink
  • Method for preparing superfine iron oxide red pigment by utilizing discarded selenium drum powdered ink
  • Method for preparing superfine iron oxide red pigment by utilizing discarded selenium drum powdered ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A. Put the collected waste toner cartridges in the waste toner cartridge crushing and magnetic separation device, and after crushing, magnetic separation, wind separation and other procedures, metal (iron, aluminum), plastic, and finally black organic toner are collected in sequence. ;

[0017] B. Place the obtained toner in a crucible, and calcinate in a muffle furnace at 500°C for three hours, and then dark red iron oxide powder can be obtained after natural cooling;

[0018] C. Add 50 ml of water to a 100 ml beaker, add 0.75 g of soda, which is 1.5% of the water mass, into the beaker, and stir evenly to obtain a clear solution;

[0019] D. Weigh 50 g of the above-mentioned dark red powder into the above-mentioned clear solution, stir rapidly with the mixer, and then add 1% of the total mass, that is, 1.0 g of PVP (dissolved in a solution with a volume ratio of methanol to water of 1:1) and continue stirring. A red pigment slurry with good uniform dispersion can be o...

Embodiment 2

[0021] A. Put the collected waste toner cartridges in the waste toner cartridge crushing and magnetic separation device, and after crushing, magnetic separation, wind separation and other procedures, metal (iron, aluminum), plastic, and finally black organic toner are collected in sequence. ;

[0022] B. Place the obtained toner in a crucible, and calcinate in a muffle furnace at 500°C for three hours, and then dark red iron oxide powder can be obtained after natural cooling;

[0023] C. 30 L of water is added in the 50 L beaker, the soda that is 0.45 Kg of 1.5% of the water quality is added in the beaker, stir to obtain a clear solution;

[0024] D. Weigh 40 kg of the above-mentioned dark red powder and add it to the above-mentioned clear solution, stir rapidly with the mixer, and then add 1% of the total mass, that is, 0.704 Kg of PVP (dissolved in a solution with a volume ratio of methanol to water of 1:1) and continue stirring. The red pigment slurry with uniformity and g...

Embodiment 3

[0026] A. Put the collected waste toner cartridges in the waste toner cartridge crushing and magnetic separation device, and after crushing, magnetic separation, wind separation and other procedures, metal (iron, aluminum), plastic, and finally black organic toner are collected in sequence. ;

[0027] B. Place the obtained toner in a crucible, and calcinate in a muffle furnace at 500°C for three hours, and then dark red iron oxide powder can be obtained after natural cooling;

[0028] C. 30 L of water is added in the 50 L beaker, the soda that is 0.3 Kg of 1% of the water quality is added in the beaker, stir to obtain a clear solution;

[0029] D. Weigh 30 kg of the above-mentioned dark red powder and add it to the above-mentioned clear solution, stir rapidly with the mixer, and then add 0.8% of the total mass, that is, 0.48 Kg of PVP (dissolved in a solution with a volume ratio of methanol to water of 1:1) and continue stirring. The red pigment slurry with uniformity and goo...

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Abstract

The invention relates to a method for preparing a superfine iron oxide red pigment by utilizing discarded selenium drum powdered ink. The method comprises the following steps of: putting a discarded selenium drum into a waste selenium drum crushing and magnetic separation device, and performing crushing, magnetic separation, wind-force separation and the like to obtain metal (iron and aluminum) and plastics sequentially, and collecting to obtain black organic powdered ink; putting the collected powdered ink into a crucible, calcining in a muffle furnace at the temperature of 500 DEG C for 3 hours, and cooling naturally to obtain dark red iron oxide powder; adding 50 milliliters of water into a 100-milliliters flask, adding soda in an amount which is 1 to 1.5 percent of the mass of the water into the flask, and stirring uniformly to obtain a clarified solution; weighing 40 to 70 grams of dark red powder, adding the dark red powder into the clarified solution, and stirring by using a stirrer quickly; and adding polyvinyl pyrolidone (PVP) which accounts for 0.5 to 1 percent of the total mass (which is dissolved by using a solution of methanol and water in a volume ratio of 1:1), and continuing to stir to obtain red pigment paste which is uniform and high in dispersity. According to the superfine iron oxide pigment, a treatment process is simple, the wastes can be recycled, the discharge of the wastes is reduced, and environmental protection is facilitated.

Description

technical field [0001] The invention relates to a method for preparing superfine iron oxide red pigment by using waste toner cartridge toner, and belongs to the technical field of chemical and chemical material preparation technology. Background technique [0002] Toner cartridges are the main consumables of laser printers and are widely used by institutions, units and home users. As the modern office has higher and higher requirements on the quality and quantity of office accessories (printers, copiers, etc.), toner cartridges that cannot meet the printing quality and efficiency will be gradually eliminated, or the entire toner cartridge will be scrapped due to aging or consumption of components and loss of printing function. There is a huge amount of discarded toner cartridges produced in my country every year. Statistics from a solid waste disposal center in Shanghai show that in 2009, companies collected as many as 4 tons of discarded toner cartridges in Shanghai. Disma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/24C09C3/10C09C3/06
Inventor 程知萱杨桂兴宋玲玉朱伟民陆文雄
Owner SHANGHAI UNIV
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