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Fluorapatite purification method and method for preparing fluorohydroxyapatite bioceramic thereof

A technology of fluorohydroxyapatite and fluoroapatite, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of complex operation process, difficult control, high production cost, etc., and achieve the improvement of purity and production The effect of low cost and avoiding high cost

Inactive Publication Date: 2019-06-21
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can prepare fluorohydroxyapatite with different fluorine content, their application is limited by the disadvantages of high production cost, complicated operation process and difficult control.

Method used

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  • Fluorapatite purification method and method for preparing fluorohydroxyapatite bioceramic thereof
  • Fluorapatite purification method and method for preparing fluorohydroxyapatite bioceramic thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] A method for preparing fluorohydroxyapatite bioceramics from fluoroapatite, the process flow chart is shown in figure 1 , including the following steps:

[0078] Step 1: Flotation Purification

[0079] (1) Fluorapatite ore roughing

[0080] The fluoroapatite ore is wet-milled with a ceramic ball mill, and the product with a particle size of less than 0.074mm accounts for about 80% of the total material weight to obtain fluoroapatite ore powder. The concentration is 75%;

[0081] Transfer the ground fluoroapatite ore powder to the flotation equipment and add water to adjust the slurry to obtain a rougher slurry with a mass concentration of 25%; wherein, the stirring speed is 2200rpm;

[0082] Add the pH adjuster NaOH to the rough dressing pulp to adjust the pH value of the pulp to 9, and stir for 3 minutes, then add the inhibitor sodium carbonate and stir for 3 minutes, the amount of sodium carbonate added is 3000g / t, then add the inhibitor sodium silicate and stir ...

Embodiment 2

[0100] The fluorapatite ore used in this embodiment is the same as that in Embodiment 1.

[0101] A method for preparing fluorohydroxyapatite bioceramics from fluoroapatite, the process flow chart is shown in figure 1 , including the following steps:

[0102] Step 1: Flotation Purification

[0103] (1) Fluorapatite ore roughing

[0104] The fluoroapatite ore is wet-milled with a ceramic ball mill until the particle size of less than 0.074mm accounts for about 77% of the total material weight, and the fluoroapatite ore powder is obtained. Among them, in the wet ball milling, the grinding quality The concentration is 75%;

[0105] Transfer the ground fluoroapatite ore powder to a flotation device and add water to adjust the slurry to obtain a rougher slurry with a mass concentration of 20%; wherein, the stirring speed is 2000rpm;

[0106] Add the pH adjuster NaOH to the rough dressing pulp to adjust the pH value of the pulp to 8, and stir for 3 minutes, then add the inhibito...

Embodiment 3

[0124] The fluorapatite ore used in this embodiment is the same as that in Embodiment 1.

[0125] A method for preparing fluorohydroxyapatite bioceramics from fluoroapatite, the process flow chart is shown in figure 1 , including the following steps:

[0126] Step 1: Flotation Purification

[0127] (1) Fluorapatite ore roughing

[0128] The fluoroapatite ore is wet-milled with a ceramic ball mill until the particle size of less than 0.074mm accounts for about 77% of the total material weight, and the fluoroapatite ore powder is obtained. Among them, in the wet ball milling, the grinding quality The concentration is 75%;

[0129] Transfer the ground fluoroapatite ore powder to the flotation equipment and add water to adjust the slurry to obtain a rougher slurry with a mass concentration of 20%; wherein, the stirring speed is 1800rpm;

[0130] Add the pH adjuster NaOH to the rough dressing pulp to adjust the pH value of the pulp to 7, and stir for 3 minutes, then add the inh...

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Abstract

The invention discloses a fluorapatite purification method and a method for preparing a fluorohydroxyapatite bioceramic, and belongs to the technical field of mineral processing. The fluorapatite purification method comprises the following steps that the fluorapatite ore is ground, stirred and slurried, adjusted to pH value, added with an inhibitor and a collector, and inflated for rough selectionto obtain a coarsely selected concentrate and a coarsely selected tailings; the coarsely selected concentrate is slurried, adjusted to pH value, and added with the inhibitor for selection to obtain afluoroapatite concentrate and a selected tailings; and the fluoroapatite concentrate is added with water and slurried and then added with phosphoric acid leaching, solid-liquid separation is carriedout, and the purified fluoroapatite is obtained after drying. The purified fluoroapatite is added with water and stirred to remove the agent, concentrated nitric acid is added to dissolve, NaOH is added to carry out hydroxy reaction, and after calcination and crystallization, the fluorohydroxyapatite bioceramic is obtained. The method obtains the synthesized fluorohydroxyapatite which is used as ahuman body hard tissue substitute material, and the method has the characteristics of being low in production cost, simple in process, easy to operate and the like.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a preparation method of fluorohydroxyapatite, a raw material with high added value biological material, in particular to a method for purifying fluoroapatite and its biological preparation method of fluorohydroxyapatite. ceramic method. Background technique [0002] Millions of people around the world suffer from orthopedic diseases every year. According to statistics, more than 500,000 people in the world receive artificial joint replacement surgery every year due to fractures, osteoarthritis, bone tumors and other diseases, and 30,000 to 50,000 people in my country receive artificial joint surgery every year. Among them, artificially synthesized biomaterials will become the first choice for the treatment of bone tissue diseases or tooth defects. At the same time, with the development of the global aging trend, more and more people will need human soft and hard tissue ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
CPCB03B7/00C04B35/447
Inventor 印万忠韩会丽操斌姚金杨斌赵晨孙浩然
Owner NORTHEASTERN UNIV
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