Animal bone ash spar and preparation method thereof

Abstract

The invention relates to the field of animal bone ash ornaments, and discloses animal bone ash spar and a preparation method thereof, and the animal bone ash spar comprises the following raw materials by weight: 8-12 parts of animal bone ash, 32-48 parts of a phosphoric acid solution, 1-2 parts of bismuth oxide, and 0.04-0.06 part of a fluxing agent. According to the formula, the melting temperature of the animal bone ash can be reduced, the production cost is saved, and the clarity and transparency of the animal bone ash spar can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of animal ash ornaments, and in particular to an animal ash crystal stone and a preparation method thereof. Background Art

[0002] With the continuous development of the pet memorial industry, animal ashes crystals have gradually attracted attention as a new memorial material. This crystal has a bright appearance and stable properties, and can be preserved for a long time. It embodies the owner's deep feelings for the pet and becomes a unique carrier of emotional continuation and memorial. However, when preparing ashes crystals by traditional technology, the animal ashes must be heated to above 1200℃ to achieve melting. This high-temperature operation consumes a lot of energy and greatly increases production costs. In addition, the crystals obtained in this way have low clarity and transparency, which is difficult to meet the aesthetic requirements of souvenirs. Summary of the invention

[0003] In order to solve the technical problems of high cost and low aesthetics of the above method, the present invention provides an animal bone ash crystal and a preparation method thereof, which can reduce the melting temperature of animal bone ash, save production costs, and improve the clarity and transparency of the animal bone ash crystal.

[0004] The specific technical scheme of the present invention is: an animal ash crystal stone, comprising the following raw materials in parts by weight: 8-12 parts of animal ash, 32-48 parts of phosphoric acid solution, 1-2 parts of bismuth oxide, and 0.04-0.06 parts of flux.

[0005] Phosphoric acid is added to the formula of the present invention, which can react with calcium salt in animal bone ash to generate low melting point phosphate, thereby reducing the melting temperature of animal bone ash. The phosphoric acid with this ratio and flux can make the animal bone ash melt at about 970°C and completely melt at about 1100°C, so as to reduce energy consumption and save production costs. At about 970°C, the phosphoric acid solution will undergo a dehydration reaction to generate P 2 O 5 , P 2 O 5 The present invention can easily form opaque apatite crystals with CaO in animal ashes, and the bismuth oxide is added to the apatite crystals. 2 O 5 The combination produces bismuth phosphate glass (BiPO 4 ), bismuth phosphate glass partially decomposes at around 1100°C to release PO 4 3- Activate the nano-apatite crystal nuclei remaining in the animal ashes, guide the orderly crystallization of inorganic salts in the animal ashes, and at the same time, bismuth oxide can form a low-viscosity liquid phase at around 970°C, which accelerates the floating and discharge of bubbles in the melt, thereby improving the clarity and transparency of the animal ashes crystal.

[0006] Preferably, the following raw materials are also included in parts by weight: 0.04-0.06 parts of white lead powder.

[0007] Adding white lead powder can promote the reaction of raw materials. During the firing process, sulfur impurities will have a negative impact on the quality of crystal products. White lead powder can react with sulfur to generate volatile lead disulfide, thereby achieving the purpose of desulfurization. In addition, lead powder can also absorb some harmful elements, such as antimony, to achieve a purification effect and improve the purity of crystal products.

[0008] Preferably, in the phosphoric acid solution, the mass fraction of phosphoric acid is 80-90%.

[0009] Preferably, the flux is tin powder.

[0010] Tin powder helps to lower the firing temperature and also has a modifying effect, which can increase the transparency and hardness of the crystal.

[0011] Another technical solution of the present invention is: a method for preparing animal bone ash crystal, comprising the following steps: (1) mixing animal bone ash and phosphoric acid solution into a paste to obtain a mixture a; (2) adding bismuth oxide, white lead powder and flux to mixture a, and mixing to obtain mixture b; (3) The mixture b is calcined and cooled to form an animal bone ash crystal.

[0012] Preferably, in step (3), the calcination is specifically carried out by placing the mixture b into a calcination furnace, calcining at 920-970° C. for 900-1200 minutes, and then heating the calcination furnace to 1050-1100° C. to obtain a melt.

[0013] Mixture b is calcined at 950-970°C to a semi-molten state, at which temperature bismuth oxide and P 2 O 5 Combined to form bismuth phosphate glass, then heated to 1050-1100℃, mixture B completely melted, bismuth phosphate glass partially depolymerized, releasing PO 4 3- Activate the nano-apatite crystal nuclei remaining in the ashes and guide the orderly crystallization of inorganic salts in the ashes.

[0014] Preferably, the calcining furnace is preheated to 340-400° C. before the mixture b is placed therein.

[0015] Preferably, in step (3), the mixture b is calcined and then placed in a graphite mold for cooling and molding.

[0016] Preferably, in step (3), after the mixture b is cooled and formed, it is annealed.

[0017] Annealing treatment reduces the hardness of animal bone ash crystal and improves its cutting processability; it reduces residual stress and reduces the deformation and crack tendency of animal bone ash crystal.

[0018] Preferably, the annealing temperature of the annealing treatment is 550-650° C., and the annealing time is 120-180 minutes.

[0019] Compared with the prior art, the present invention has the following advantages: By using phosphoric acid and flux in a certain ratio, animal bone ash is melted at 950°C and completely melted at 1100°C, so as to reduce energy consumption and save production costs. 2 O 5 The combination produces bismuth phosphate glass (BiPO 4 ), bismuth phosphate glass partially decomposes at around 1100°C to release PO 4 3- Activate the nano-apatite crystal nuclei remaining in the animal ashes, guide the orderly crystallization of inorganic salts in the animal ashes, and at the same time, bismuth oxide can form a low-viscosity liquid phase at around 970°C, which accelerates the floating and discharge of bubbles in the melt, thereby improving the clarity and transparency of the animal ashes crystal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a product picture of the animal ashes crystal stone of the present invention. DETAILED DESCRIPTION

[0021] The present invention is described below by specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be thought of by those skilled in the art are included in the present invention, and the attached claims and any equivalents thereof are the protection scope of the present invention.

[0022] Unless otherwise defined, all technical terms and scientific terms used in the present invention have the same meanings as those commonly understood by ordinary technicians in the field to which the present disclosure belongs. Unless otherwise specified, the raw materials and equipment used in the present invention are conventional raw materials and equipment in the field and can be obtained from conventional commercial channels; unless otherwise specified, the methods used in the present invention are conventional methods in the field.

[0023] Embodiment 1: The invention provides an animal ash crystal stone, which comprises the following raw materials: 10g of animal ash, 40g of 85% phosphoric acid solution, 1g of bismuth oxide, 0.05g of tin powder and 0.05g of white lead powder.

[0024] The specific preparation steps are as follows: Take 10 g of bone ash, put it into a container, add 40 g of 85% phosphoric acid solution, stir with a stirrer until it becomes a paste, and let it stand for 30 minutes to obtain a mixture a; 0.05 g of white lead powder, 0.05 g of tin powder and 1 g of bismuth oxide were added to mixture a, and the mixture was stirred evenly to obtain mixture b; the muffle furnace was preheated to 370 degrees to exhaust air, and the mixture b was transferred to a quartz crucible and placed in the preheated muffle furnace for calcination at a temperature of 970° C. After calcination for 900 minutes, the muffle furnace was heated to 1100° C. to obtain a melt; the melt was poured into a graphite mold and waited for it to cool and form into a crystal; The formed crystal was placed back into the muffle furnace at 600 degrees for annealing for 150 minutes. After annealing, it was taken out and naturally cooled to room temperature to obtain an animal ash crystal.

[0025] Figure 1 Animal ash crystal products are made from the ashes of different animals.

[0026] Embodiment 2: The invention provides an animal ash crystal stone, which comprises the following raw materials: 8g of animal ash, 32g of 80% phosphoric acid solution, 1g of bismuth oxide, 0.04g of tin powder and 0.04g of white lead powder.

[0027] The specific preparation steps are as follows: 8 g of bone ash was placed in a container, and 32 g of 80% phosphoric acid solution was added, and the mixture was stirred with a stirrer until it became a paste, and allowed to stand for 40 minutes to obtain a mixture a; 0.04 g of white lead powder, 0.04 g of tin powder and 1 g of bismuth oxide were added to mixture a, and the mixture was stirred evenly to obtain mixture b; the muffle furnace was preheated to 340 degrees to exhaust air, and the mixture b was transferred to a quartz crucible and placed in the preheated muffle furnace for calcination at a temperature of 960° C. After calcination for 1000 minutes, the muffle furnace was heated to 1070° C. to obtain a melt; the melt was poured into a graphite mold and waited for it to cool and form into a crystal; The formed crystal was placed back into the muffle furnace at 550 degrees for annealing for 120 minutes. After annealing, it was taken out and naturally cooled to room temperature to obtain an animal ash crystal.

[0028] Embodiment 3: The invention provides an animal ash crystal stone, which comprises the following raw materials: 12g of animal ash, 48g of 90% phosphoric acid solution, 2g of bismuth oxide, 0.06g of tin powder and 0.06g of white lead powder.

[0029] The specific preparation steps are as follows: Take 12 g of bone ash, put it into a container, add 48 g of 90% phosphoric acid solution, stir with a stirrer until it becomes a paste, and let it stand for 30 minutes to obtain a mixture a; 0.06 g of white lead powder, 0.06 g of tin powder and 2 g of bismuth oxide were added to mixture a, and the mixture was stirred evenly to obtain mixture b; the muffle furnace was preheated to 400 degrees to exhaust air, and the mixture b was transferred to a quartz crucible and placed in the preheated muffle furnace for calcination at a temperature of 950° C. After calcination for 1200 minutes, the muffle furnace was heated to 1050° C. to obtain a melt; the melt was poured into a graphite mold and waited for it to cool and form into a crystal; The formed crystal was put back into the muffle furnace at 650 degrees for annealing for 180 minutes. After annealing, it was taken out and naturally cooled to room temperature to obtain the animal ash crystal.

[0030] Comparative Example 1: The difference between this comparative example and Example 1 lies in the calcination step, which is specifically: The muffle furnace was preheated to 370 degrees to exhaust the air, and the mixture b was transferred into a quartz crucible and placed in the preheated muffle furnace for calcination at a calcination temperature of 1100° C. After calcination for 1200 minutes, a melt was obtained.

[0031] Comparative Example 2: The difference between this comparative example and Example 1 lies in the formula, which is specifically: The invention comprises the following raw materials: 10 g of animal bone ash, 40 g of 85% phosphoric acid solution, 0.05 g of tin powder and 0.05 g of white lead powder.

[0032] Comparative Example 3: The difference between this comparative example and Example 1 lies in the formula, which is specifically: The invention comprises the following raw materials: 10 g of animal bone ash, 30 g of 85% phosphoric acid solution, 1 g of bismuth oxide, 0.05 g of tin powder and 0.05 g of white lead powder.

[0033] After the same calcination process as in Example 1, mixture b was not completely melted.

[0034] The animal bone ash crystals obtained in Examples 1-3 and Comparative Examples 1-2 were tested for clarity and transparency, and the testing method was as follows: Clarity: Use a 10x magnifying glass to check whether there are cracks or inclusions inside the sample; Transparency: Place the sample on the test bench of the transmittance meter, adjust the instrument so that the light passes through the sample vertically, and measure the transmittance of the sample.

[0035] The test results are as follows: Table 1 Sample clarity and transparency test results It can be seen from the above table: (1) Comparing Example 1 with Comparative Examples 1 and 2, the clarity and transmittance of Example 1 are significantly better than those of Comparative Examples 1 and 2. The reason for this is that phosphoric acid is added to the formula of the present invention, which can react with the calcium salt in the animal bone ash to generate a low melting point phosphate. The phosphoric acid in this ratio combined with the flux can make the animal bone ash melt at 950-970°C and completely melt at 1050-1100°C. During the calcination process at 950-970°C, bismuth oxide and P 2 O 5 The bismuth phosphate glass with high transmittance and refractive index is formed by combining. When the temperature is raised to 1050-1100℃, the bismuth phosphate glass is partially depolymerized, releasing PO 4 3- Activate the nano-apatite crystal nuclei remaining in the ashes, guide the orderly crystallization of inorganic salts in the ashes, thereby improving the clarity and transparency of the animal ashes crystals; (2) Examples 1-3 all achieved good clarity and transparency, and the product quality could meet user needs.

[0036] The raw materials and equipment used in the present invention, unless otherwise specified, are all commonly used raw materials and equipment in the art; the methods used in the present invention, unless otherwise specified, are all conventional methods in the art.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An animal ash crystal stone, characterized in that: The invention comprises the following raw materials in parts by weight: 8-12 parts of animal bone ash, 32-48 parts of phosphoric acid solution, 1-2 parts of bismuth oxide and 0.04-0.06 parts of flux.

2. The animal ashes crystal according to claim 1, characterized in that: The invention also comprises the following raw materials in parts by weight: 0.04-0.06 parts of white lead powder.

3. The animal ashes crystal according to claim 1, characterized in that: In the phosphoric acid solution, the mass fraction of phosphoric acid is 80-90%.

4. The animal bone ash crystal according to any one of claims 1 to 3, characterized in that: The flux is tin powder.

5. A method for preparing animal bone ash crystal, characterized in that: The steps include: (1) mixing animal bone ash and phosphoric acid solution into a paste to obtain a mixture a; (2) adding bismuth oxide, white lead powder and flux to mixture a, and mixing to obtain mixture b; (3) The mixture b is calcined and cooled to form an animal bone ash crystal.

6. The method for preparing animal bone ash crystal according to claim 5, characterized in that: In step (3), the calcination is specifically to place the mixture b into a calcination furnace, calcine at 950-970° C. for 900-1200 minutes, and then raise the temperature of the calcination furnace to 1050-1100° C. to obtain a melt.

7. The method for preparing animal bone ash crystal according to claim 6, characterized in that: The calcining furnace is preheated to 340-400°C before adding mixture b.

8. The method for preparing animal bone ash crystal according to claim 5, characterized in that: In step (3), the mixture b is calcined and then placed in a graphite mold to be cooled and formed.

9. The method for preparing animal bone ash crystal according to any one of claims 5 to 8, characterized in that: In step (3), after the mixture b is cooled and formed, it is annealed.

10. The method for preparing animal bone ash crystal according to claim 9, characterized in that: The annealing temperature of the annealing treatment is 550-650° C., and the annealing time is 120-180 minutes.

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