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Biological microcrystalline glass prepared by utilizing phosphate tailings and preparation method thereof

A technology of glass-ceramics and phosphate rock tailings, which is applied in the field of biological glass-ceramics and its preparation, can solve the problems of high production cost, low mechanical strength, and poor biocompatibility of biological glass-ceramics, and achieve beneficial Environmental governance, good physical and chemical properties, and the effect of improving biocompatibility

Active Publication Date: 2015-03-18
CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a biological glass-ceramic prepared from phosphate rock tailings and a preparation method thereof, which solves the problems of high production cost of biological glass-ceramics and the reuse of apatite tailings; and also solves the problem of existing biological glass-ceramics Technical problems of low mechanical strength and poor biocompatibility of glass materials

Method used

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  • Biological microcrystalline glass prepared by utilizing phosphate tailings and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1, this biological glass-ceramic prepared by utilizing phosphate rock tailings, its raw material composition proportioning by weight is as follows:

[0059] 35 parts of apatite tailings, 15 parts of quartz sand, 16 parts of aluminum hydroxide, 24 parts of calcium hydrogen phosphate, 10 parts of calcium fluoride, and 0.5 parts of borax.

[0060] Weigh the raw materials according to the above proportions, and mix them evenly to form the batch. The glass is melted in a platinum crucible using a molybdenum silicon rod electric furnace. The furnace temperature was raised to 1500°C in advance. Put the homogeneously mixed batch into a platinum crucible in a high-temperature electric furnace at 1500°C to maintain a constant temperature. After melting for 2 hours, pour the molten glass directly into the water basin, which is the glass water quenching material.

[0061]Grind the water-quenched glass material into a fine powder of less than 300 meshes, then place it ...

Embodiment 2

[0064] Embodiment 2, this biological glass-ceramic prepared by utilizing phosphate rock tailings, its raw material composition proportioning by weight is as follows:

[0065] 35 parts of apatite tailings, 16 parts of quartz sand, 14 parts of aluminum hydroxide, 26 parts of calcium hydrogen phosphate, 9 parts of calcium fluoride, and 0.5 parts of borax.

[0066] Weigh the raw materials according to the above proportions, and mix them evenly to form the batch. The glass is melted in a platinum crucible using a molybdenum silicon rod electric furnace. The furnace temperature was raised to 1500°C in advance. Put the homogeneously mixed batch into a platinum crucible in a high-temperature electric furnace at 1500°C to maintain a constant temperature. After melting for 2 hours, pour the molten glass directly into the water basin, which is the glass water quenching material.

[0067] Grind the water-quenched glass material into a fine powder of less than 300 meshes, then place it ...

Embodiment 3

[0070] Embodiment 3, this biological glass-ceramic prepared by utilizing phosphate rock tailings, its raw material composition proportioning by weight is as follows:

[0071] 32 parts of apatite tailings, 17 parts of quartz sand, 10 parts of aluminum hydroxide, 28 parts of calcium hydrogen phosphate, 13 parts of calcium fluoride, and 0.5 parts of borax.

[0072] Weigh the raw materials according to the above proportions, and mix them evenly to form the batch. The glass is melted in a platinum crucible using a molybdenum silicon rod electric furnace. The furnace temperature was raised to 1500°C in advance. Put the homogeneously mixed batch into a platinum crucible in a high-temperature electric furnace at 1500°C to maintain a constant temperature. After melting for 2 hours, pour the molten glass directly into the water basin, which is the glass water quenching material.

[0073] Grind the water-quenched glass material into a fine powder of less than 300 meshes, then place it...

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Abstract

The invention relates to biological microcrystalline glass prepared by utilizing phosphate tailings and a preparation method thereof. The biological microcrystalline glass comprises the following raw materials in parts by weight: 30 to 35 parts of the phosphate tailings, 15 to 25 parts of quartz sand, 10 to 16 parts of aluminium hydroxide, 20 to 28 parts of calcium hydrophosphate, 9 to 13 parts of calcium fluoride, 0 to 5 parts of magnesium oxide, 0 to 5 parts of zinc oxide and 0.5 part of sodium borate, wherein the utilization rate of the tailings reaches more than 30%. Compared with a product produced by utilizing conventional chemical raw materials, the biological microcrystalline glass has better physical and chemical properties and realizes reduction in the raw material cost by more than 30%. Based on the SiO2-Al2O3-P2O5-CaO-CaF2 system, the magnesium and the zinc are utilized to replace the partial calcium, so that a new magnesium-series wagnerite phase and a zinc-series zinc pointed crystal phase are generated, and therefore, the brittleness of the biological microcrystalline glass is improved while the mechanical strength is improved. In addition, the biocompatibility, the bioactivity and the chemical stability of the biological microcrystalline glass are improved.

Description

technical field [0001] The invention relates to a biological glass-ceramic and a preparation method thereof. Background technique [0002] Glass-ceramic is a polycrystalline solid material containing a large number of microcrystals. Since its introduction in 1957, glass-ceramic has been known for its wide composition, excellent performance and variety. Biological glass-ceramic refers to a special glass-ceramic material that can meet specific physiological functions. It has good biocompatibility and bioactivity, and has the ability to combine with bone tissue. It is a promising new biomedical material. [0003] Bio-glass ceramics are mainly used in orthopedic dental restoration materials, glass-based bone cement, drug carrier materials, bone tissue engineering and glass materials for interventional therapy. In order to meet the clinical needs for various shapes of artificial bone materials, bioglass-ceramics must have certain machinability in addition to good biocompatibil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02C03C10/16
Inventor 张辉旭张金青孙小卫刘涛张雪莹金克谟冯立新牛艳宁
Owner CHINESE ACAD OF GEOLOGICAL SCI
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