Preparation method for refined beryllium hydroxide and preparation method for reactor-quality metallic beryllium bead from refined beryllium hydroxide

A technology of beryllium hydroxide and metal, applied in the direction of beryllium oxide/hydroxide, etc., can solve the problems that cannot be realized, reference data cannot be obtained, etc., and achieve the effect of overcoming the difficulty of aluminum removal

Inactive Publication Date: 2014-03-26
FUYUN HENGSHENG BERYLLIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Preparation method for refined beryllium hydroxide and preparation method for reactor-quality metallic beryllium bead from refined beryllium hydroxide
  • Preparation method for refined beryllium hydroxide and preparation method for reactor-quality metallic beryllium bead from refined beryllium hydroxide

Examples

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Comparison scheme
Effect test

Embodiment 1

[0040] Purification of industrial beryllium hydroxide to obtain refined beryllium hydroxide preparation process, please refer to the attached figure 1 , including the following steps:

[0041] 1) Mix industrial beryllium hydroxide with water to make a slurry, press BeO:H 2 SO 4 Add sulfuric acid with a concentration of 93-98% at a weight ratio of 1:4.7, stir for 30 minutes, add beef glue at a weight ratio of BeO: animal glue of 1:0.010, heat up and evaporate to dryness, add pure water and press filter.

[0042] 2) Add pure water to the filtrate in step 1), add ammonia water to adjust the pH value to 3.5-4, raise the temperature to 70°C, add EDTA to remove impurities, stir at constant temperature for 1 hour, and pass in liquid ammonia to adjust the pH value to 5.7 After transformation, Continue to feed liquid ammonia until the pH is 8.0, stop feeding, stir for 30 minutes, and press filter to obtain refined beryllium hydroxide.

Embodiment 2

[0044] Purification of industrial beryllium hydroxide to obtain refined beryllium hydroxide preparation process, please refer to the attached figure 1 , including the following steps:

[0045] 1) Mix industrial beryllium hydroxide with water to make a slurry, press BeO:H 2 SO 4 Add sulfuric acid with a concentration of 93-98% at a weight ratio of 1:4.5. After stirring for 30 minutes, add beef glue at a weight ratio of BeO:animal glue of 1:0.012. After heating up and evaporating to dryness, add pure water and press filter.

[0046]2) Add pure water to the filtrate in step 1), add ammonia water to adjust the pH value to 3.5-4, raise the temperature to 70°C, add EDTA to remove impurities, stir at constant temperature for 1 hour, and pass in liquid ammonia to adjust the pH value to 5.7 After transformation, Continue to feed liquid ammonia until the pH is 8.0, stop feeding, stir for 30 minutes, and press filter to obtain refined beryllium hydroxide.

Embodiment 3

[0048] Purification of industrial beryllium hydroxide to obtain the preparation process of refined beryllium hydroxide, the process flow is shown in the appendix figure 1 , including the following steps:

[0049] 1) Mix industrial beryllium hydroxide with water to make a slurry, press BeO:H 2 SO 4 Add sulfuric acid with a concentration of 93-98% at a weight ratio of 1:5. After stirring for 30 minutes, add beef gum at a weight ratio of BeO: animal glue of 1:0.008. After heating up and evaporating to dryness, add pure water and press filter.

[0050] 2) Add pure water to the filtrate in step 1), add ammonia water to adjust the pH value to 3.5-4, raise the temperature to 70°C, add EDTA to remove impurities, stir at constant temperature for 1 hour, and pass in liquid ammonia to adjust the pH value to 5.7 After transformation, Continue to feed liquid ammonia until the pH is 8.0, stop feeding, stir for 30 minutes, and press filter to obtain refined beryllium hydroxide.

[0051] T...

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Abstract

The invention discloses a preparation method for refined beryllium hydroxide. The preparation method comprises the following steps: 1) reacting industrial beryllium hydroxide with sulfuric acid so as to obtain beryllium sulfate, mixing beryllium sulfate with animal glue, evaporating an obtained mixture to dryness at a high temperature, adding water and carrying out press filtration so as to remove the impurity silicon; and 2) subjecting a filtrate obtained in the step 1) to complex-precipitation and carrying out press filtration to obtain the refined beryllium hydroxide. The invention further provides a preparation method for a metallic beryllium bead; through adjustment of technology and operation, problems in refining of industrial beryllium hydroxide prepared from a variety of ore samples are overcome, and high-purity refined beryllium hydroxide is provided for preparation of the reactor-quality metallic beryllium bead; beryllium fluoride is prepared by using a fluorination method, and then the metallic beryllium bead is prepared through the redox characteristics of magnesium.

Description

technical field [0001] The invention relates to a purification method of industrial beryllium hydroxide and a preparation method of metallic glass. Background technique [0002] As a rare metal, beryllium has a wide range of applications due to its unique properties, but only a few countries have mastered its production technology. It is very difficult to produce pure metal beryllium, mainly because of the high chemical activity of metal beryllium to oxygen, carbon, nitrogen and some other elements. Therefore, in the process of producing metal and in the next step of processing, it is necessary to try to prevent the metal from being contaminated by impurities. The plasticity of beryllium is not high, so it is not easy to obtain the required high-quality products. At present, only two methods have industrial value: beryllium fluoride magnesium thermal reduction method and beryllium chloride and sodium chloride molten salt electrolysis method. Among them, industrial berylli...

Claims

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Application Information

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IPC IPC(8): C01F3/02C22B35/00
Inventor 朱新明
Owner FUYUN HENGSHENG BERYLLIUM IND
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