Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of cesium-strontium adsorbent particles

A technology of adsorbents and particles, which is applied in the field of preparation of cesium strontium element adsorbent particles, to achieve high specific surface area, reduce flow resistance, and reduce the probability of pulverization

Pending Publication Date: 2020-08-28
兴核科学研究(福建)有限责任公司
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] [1] Wang Jinming, Yi Facheng

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of cesium-strontium adsorbent particles
  • Preparation method of cesium-strontium adsorbent particles
  • Preparation method of cesium-strontium adsorbent particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Prepare cobalt nitrate solution, the solution concentration is 0.5mol / L, prepare potassium ferrocyanide solution, the solution concentration is 0.5mol / L, mix 1.66L cobalt nitrate solution with 1L potassium cyanide solution, stir continuously and react evenly to form ferrocyanide Potassium cobalt ferricyanide was precipitated. After the reaction was completed, let it stand still, discard the supernatant, and wash it with deionized water for 3 times until the supernatant was colorless and transparent. Dry at 80°C, crush the precipitate with a crusher;

[0030] Weigh 100g of precipitate, add 8g of methyl cellulose, 1g of polyethylene glycol, 20ml of binder 1% polyvinyl alcohol solution, mix evenly, add into an extruder to form a thin strip green body, break it and put it into a spheronizer to make a nearly spherical particles;

[0031] Put the granules prepared by the spheronizer into a muffle furnace, raise the temperature to 200°C at a heating rate of 3°C / min, and keep ...

Embodiment 2

[0036] Prepare nickel nitrate solution, the solution concentration is 0.5mol / L, prepare potassium ferrocyanide solution, the solution concentration is 0.5mol / L, mix 1.33L nickel nitrate solution with 1L potassium cyanide solution, stir continuously and react evenly, and generate ferrocyanide Precipitation of potassium nickel ferricyanide. After the reaction was over, let it stand still, discard the supernatant, and wash with deionized water 4 times until the supernatant was colorless and transparent. Dry at 100°C, crush the precipitate with a crusher;

[0037] Weigh 100g of precipitate, add 20g of microcrystalline cellulose, 2g of stearic acid, 20ml of binder 10% glucose solution, mix evenly, add into extruder to form a thin strip-shaped green body, break it and put it into a spheronizer to make nearly spherical particles ;

[0038] Put the particles prepared by the spheronizer into a muffle furnace, raise the temperature to 300°C at a heating rate of 0.5°C / min, and keep the...

Embodiment 3

[0043]Prepare copper nitrate solution, the solution concentration is 0.5mol / L, prepare potassium ferrocyanide solution, the solution concentration is 0.5mol / L, mix 1.33L copper nitrate solution with 1L potassium cyanide solution, stir continuously and react evenly to form ferrocyanide Potassium copper ferricyanide precipitates. After the reaction was over, let it stand still, discard the supernatant, and wash with deionized water 6 times until the supernatant was colorless and transparent. Dry at 80°C, crush the precipitate with a crusher;

[0044] Weigh 100g of the precipitate, add 12g of ethyl cellulose, 2g of polyethylene glycol, 20ml of binder 1% polyvinyl alcohol solution, mix evenly, add into an extruder to form a thin strip green body, break it and put it into a spheronizer to make a nearly spherical particles;

[0045] Put the particles prepared by the spheronizer into a muffle furnace, raise the temperature to 280°C at a heating rate of 2°C / min, and keep it warm for...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of cesium-strontium adsorbent particles. The preparation method comprises the following steps: 1) synthesizing metal ferrocyanide powder: mixing a Co(NO3)2, Cu(NO3)2 or Ni(NO3)2 aqueous solution with a K4Fe(CN)6 aqueous solution to generate a metal ferrocyanide precipitate, and mechanically pulverizing the precipitate; 2) forming adsorbent particles: mixing metal ferrocyanide powder with 8-20 wt% of a proppant, 1-2 wt% of a lubricant and 0.2-1 wt% of a binder, adding the obtained mixture into an extruder to form a thin strip-shaped green body, breaking the green body, and putting the broken green body into a spheronization machine to form nearly spherical particles; and 3) dewaxing the adsorbent particles: putting the prepared particles into anelectric furnace, heating to 200-300 DEG C, and keeping the temperature for 24 h to obtain the cesium-strontium adsorbent particles. The method can be used for industrial large-scale production of thecesium-strontium adsorbent particles, and batch preparation of the adsorbent particles is achieved through the extrusion rounding process; and compared with the metal ferrocyanide powder, the nearlyspherical particles can reduce the pulverization probability, and meanwhile, the particles prepared by the method have relatively high specific surface area and aperture ratio, so that the adsorptionefficiency can be improved, and the liquid flow resistance can be reduced.

Description

technical field [0001] The invention relates to a preparation method of cesium strontium element adsorbent particles. Background technique [0002] my country's existing energy structure is dominated by thermal power. In order to optimize the energy structure, cope with climate development, and achieve sustainable development, vigorously developing nuclear power is an integral part of my country's energy strategy. The installed capacity of nuclear power has continued to increase in recent years. The rapid development of nuclear power has also promoted the development of my country's nuclear industry. With the development of the nuclear industry, a large amount of radioactive waste has been generated in scientific research and production activities. If it cannot be effectively disposed of, it will directly threaten the environment and public safety. [0003] The main radionuclides contained in the highly radioactive wastewater produced during the operation of nuclear power pl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J20/02B01J20/30G21F9/12
CPCB01J20/0259G21F9/12B01J2220/4806B01J2220/4812B01J2220/4825
Inventor 张志平
Owner 兴核科学研究(福建)有限责任公司