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Turquoise ceramic pigment synthesized by solid phase method and preparation method thereof

A technology of ceramic pigments and turquoise, applied in the direction of fibrous fillers, etc., can solve problems such as the difficulty in realizing the large-scale popularization and application of turquoise, the scarcity of turquoise mineral raw stone content, and restrictions on the application and promotion of turquoise. The effect of low raw material quality requirements and saving production cycle

Active Publication Date: 2021-03-16
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of raw turquoise minerals is scarce, the mineable amount is low, the price is expensive, the application and promotion of turquoise is limited, the production cycle is long, the production cost is high, and it is difficult to mass produce large-scale production. It is difficult to realize the large-scale promotion and application of turquoise

Method used

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  • Turquoise ceramic pigment synthesized by solid phase method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Weigh raw materials: according to mass percentage SiO 2 65wt%, Cr 2 o 3 30wt%, NH 4 h 2 PO 4 5wt%, admixture Co 2 o 3 3wt% weigh raw materials;

[0026] 2) Grinding and sieving: mixing and grinding the raw materials, passing through a 250-mesh sieve;

[0027] 3) Granulation: adding PVA with a concentration of 5% as a binder for granulation, the addition amount is 6%;

[0028] 4) Molding and firing: 10g of the above-mentioned raw materials are pressed into shape (40kN pressure), and calcined at 1300°C to form a number of discs with a diameter of 3cm. The specific firing system is: from room temperature to 900°C, the heating rate is 6°C / min , 100°C, 200°C, 300°C, 400°C, 500°C, 6500°C, 700°C, 800°C and 900°C for 30 minutes respectively. The heating rate from 900°C to 1300°C is 5°C / min, and the temperature is kept at 1000°C, 1100°C, 1200°C and 1300°C for 1 hour respectively;

[0029] 5) Grinding and cleaning: After grinding the calcined color material into powd...

Embodiment 2

[0032] 1) Weigh raw materials: according to mass percentage SiO 2 70wt%, Cr 2 o 3 25wt%, NH 4 h 2 PO 4 5wt%, admixture Co 2 o 3 3wt% weigh raw materials;

[0033] 2) Grinding and sieving: mixing and grinding the raw materials, passing through a 250-mesh sieve;

[0034] 3) Granulation: add PVA with a concentration of 6% as a binder for granulation, and the addition amount is 8%;

[0035] 4) Molding and firing: 10g of the above-mentioned raw materials are pressed into shape (40kN pressure), and calcined at 1300°C to form a number of discs with a diameter of 3cm. The specific firing system is: from room temperature to 900°C, the heating rate is 6°C / min , 100°C, 200°C, 300°C, 400°C, 500°C, 6500°C, 700°C, 800°C and 900°C for 30 minutes respectively. The heating rate from 900°C to 1300°C is 5°C / min, and the temperature is kept at 1000°C, 1100°C, 1200°C and 1300°C for 1 hour respectively;

[0036] 5) Grinding and cleaning: After grinding the calcined color material into pow...

Embodiment 3

[0039] 1) Weigh raw materials: according to mass percentage SiO 2 65wt%, Cr 2 o 3 27wt%, NH 4 h 2 PO 4 8wt%, admixture Co 2 o 3 5wt% weigh raw materials;

[0040] 2) Grinding and sieving: mixing and grinding the raw materials, passing through a 250-mesh sieve;

[0041] 3) Granulation: add PVA with a concentration of 6% as a binder for granulation, and the addition amount is 8%;

[0042] 4) Forming and firing: 10g of the above-mentioned raw materials are pressed into shape (40kN pressure), and calcined at 1300°C to form a number of discs with a diameter of 3cm. The specific firing system is: from room temperature to 900°C, the heating rate is 8°C / min , 100°C, 200°C, 300°C, 400°C, 500°C, 6500°C, 700°C, 800°C and 900°C for 30 minutes respectively. The heating rate from 900°C to 1300°C is 5°C / min, and the temperature is kept at 1000°C, 1100°C, 1200°C and 1300°C for 1 hour respectively;

[0043] 5) Grinding and cleaning: After grinding the calcined color material into pow...

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Abstract

The invention relates to the technical field of turquoise ceramic pigment preparation, in particular to a turquoise ceramic pigment synthesized through a solid-phase method and a preparation method thereof. The turquoise ceramic pigment comprises the following components in percentage by mass: 65-70 wt% of SiO2, 22-30 wt% of Cr2O3, 5-8 wt% of NH4H2PO4 and Co2O3 accounting for 3-5 wt% of the totalweight of the raw materials mentioned above. SiO2 is used as a carrier, Cr2O3 and Co2O3 are used as coloring agents, NH4H2PO4 is used as a mineralizing agent, Cr3+ and Co2+ are used for color development, Cr3+ is attached to the surfaces of SiO2 particles in the form of Cr2O3, and Co2+ enters crystal lattices of the SiO2 particles to form Co2SiO4. Analysis shows that Cr3+ ions show green and Co2+ions show blue due to energy level transition of a d orbit in an atom outer electronic layer.

Description

technical field [0001] The invention relates to the technical field of turquoise ceramic pigment preparation, in particular to a turquoise ceramic pigment synthesized by a solid phase method and a preparation method thereof. Background technique [0002] Turquoise has a prosperous history of 6,000 to 7,000 years from the Stone Age to the present. Turquoise green is pure in color and versatile, and is used in ceramic color glaze decoration. Turquoise is a natural jade raw material composed of copper, aluminum and water phosphate minerals (CuAl 6 [PO 4 ]4(OH) 8 4H 2 O. Turquoise has gemstone luster, pure color and high artistic value. It is not only widely used in various artworks, such as thangka; it is also widely used in life and living decorations, such as bracelets, necklaces, etc. It is applied to the field of home decoration, such as wall, floor tiles, exterior wall tiles, etc.; in inkjet printing applications, turquoise graphite water is also widely used. [000...

Claims

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Application Information

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IPC IPC(8): C09C1/00C03C3/097C03C4/02
CPCC09C1/0009C03C3/097C03C4/02
Inventor 徐晓虹周士翔吴建锋邹腊年
Owner WUHAN UNIV OF TECH