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Method for producing ceramic glass colorant using waste chromium cobalt catalyst in fluorination process as raw material

A technology of cobalt catalyst and ceramic glass, which is applied in the field of waste chromium cobalt catalyst treatment, can solve environmental pollution and other problems, and achieve the effects of wide application range, strong coloring power and good thermal stability

Active Publication Date: 2011-12-14
佛山市三水天宇陶瓷颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invalid chromium-cobalt catalyst is easy to cause environmental pollution because it contains chromium, cobalt and other substances

Method used

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  • Method for producing ceramic glass colorant using waste chromium cobalt catalyst in fluorination process as raw material
  • Method for producing ceramic glass colorant using waste chromium cobalt catalyst in fluorination process as raw material
  • Method for producing ceramic glass colorant using waste chromium cobalt catalyst in fluorination process as raw material

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Experimental program
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Effect test

preparation example Construction

[0045] 2) Preparation of colorants:

[0046] 2.2.1 Chromium oxide and cobalt oxide mixture are directly used as ceramic and glass pigments.

[0047] 2.2.2 Chromium oxide and cobalt oxide mixture are used as raw materials for synthetic ceramics and glass pigments.

[0048] The pigment preparation adopts Fe-Cr-Co, Fe-Cr-Co-Mn, Cr-Co-Al, Ti-Cr-Sb series pigments.

[0049] Weigh the following raw materials by mass percentage:

[0050]

[0051] The above-mentioned materials are mixed uniformly according to a certain ratio, ground to 40 mesh to 600 mesh and fully mixed to make batch materials. Then the mixture is synthesized in a high-temperature furnace, the synthesis temperature is 600°C-1300°C, and the holding time is 0-48 hours.

Embodiment 1

[0052] Embodiment 1: pottery, glass black pigment

[0053] 1.1 Heating conversion roasting of spent catalyst (preparation of chromium oxide cobalt oxide mixture)

[0054] Mix the spent catalyst and ammonium sulfate at a ratio of 1:4, grind them to about 8 meshes, and then put them into a roasting furnace at a heating temperature of 150°C, and carry out heating conversion at this fixed temperature, and the heating curve is as follows: figure 2 shown.

[0055] The chromium and cobalt are converted from fluoride to chromium oxide cobalt oxide mixture. The mixture of chromium oxide and cobalt oxide is used as the raw material of ceramics and glass pigments, and the tail gas is discharged after defluorination of lime water.

[0056] 1.2 Preparation of colorant

[0057] Weigh the pulverized chromium oxide cobalt oxide mixture 36%, Fe 2 o 3 58%, MnCO 3 6%, V 2 o 5 0.05%, grind to about 400 mesh, put it into a resistance furnace for firing, the synthesis temperature is 600...

Embodiment 2

[0061] Embodiment 2: pottery, glass malachite green material

[0062] 2.1 Heating conversion roasting of spent catalyst (preparation of chromium oxide cobalt oxide mixture)

[0063] Mix the spent catalyst with ammonium sulfate at a ratio of 1:0.1, grind it to about 400 mesh, and then put it into a roasting furnace at a heating temperature of 1300°C. At this temperature, heat conversion is carried out. The temperature rise curve for the preparation of the pigment is as follows Figure 4 shown.

[0064] The chromium and cobalt are converted from fluoride to chromium oxide cobalt oxide mixture. The mixture of chromium oxide and cobalt oxide is used as the raw material of ceramics and glass pigments, and the tail gas is discharged after defluorination of lime water.

[0065] 2.2 Preparation of colorant

[0066] Weigh the pulverized chromium oxide cobalt oxide mixture 54%, Al 2 o 3 46%, grind to about 400 mesh, put it into a resistance furnace for firing, the synthesis temper...

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Abstract

The invention discloses a method for producing ceramic and glass pigment by using waste chromium and cobalt catalysts from a fluorination process as raw materials, which comprises: directly placing waste chromium and cobalt catalysts into a roasting furnace, heating and roasting, or adding (NH4)2SO4 into the waste chromium and cobalt catalysts, heating and roasting, wherein the heating temperature of the roasting furnace is 150 to 1,300 DEG C, and the waste chromium and cobalt catalysts are all converted into a mixture of chromium oxide and cobalt oxide; directly using the mixture of chromiumoxide and cobalt oxide as a ceramic pigment or a glass pigment, or using the chromium oxide and cobalt oxide as raw materials for synthesizing a ceramic pigment or glass pigment; and introducing the tail gas into lime stone water and performing innocent treatment. The method for producing ceramic and glass pigment by using waste chromium and cobalt catalysts from the fluorination process as the raw materials, which is disclosed by the method, eliminates damage caused by chromium and cobalt, provides a new use and realizes environment protection and resource recycling.

Description

technical field [0001] The invention relates to the technical field of processing and application of waste chromium-cobalt catalysts, in particular to a method for manufacturing ceramic glass colorants by using waste chromium-cobalt catalysts in a fluorination process as raw materials. technical background [0002] Chlorofluoroalkanes (CFCs), such as difluorodichloromethane (CFC-12), difluorochloromethane (HCFC-22), etc., are considered to be the main substance ODS (Ozone Depleting Substances) that destroy the atmospheric ozone layer and produce the global warming effect ), the international community has decided to ban the use of Freon, and organic fluorides are now replaced by some safer chemicals. There are more than 30 enterprises producing fluorine-free refrigerants in my country. For example, the production capacity of environmentally friendly refrigerant R134a in China has accounted for 30% of the global R134a production capacity, and has become the second largest R13...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C1/04C04B35/00C04B41/86
Inventor 廖红卫陈曙光于泳泽陈孝军李熹熙刘立力莫军
Owner 佛山市三水天宇陶瓷颜料有限公司
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