A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for removing insoluble phosphorus from phosphogypsum
The invention discloses a method for removing insoluble phosphorus from ardealite. The method comprises the following steps: preparing a solution from phosphogypsum powder by using water, reacting sulfuric acid with a phosphogypsum solution to obtain reaction slurry, filtering the reaction slurry to obtain filtrate and solid, washing the solid with clear water, and carrying out subsequent treatment on the washed phosphogypsum. The sulfuric acid is used as a dephosphorizing agent, so that the raw material cost is low; and the filtrate after filtration can be repeatedly used, the content of insoluble phosphorus in the obtained phosphogypsum is reduced by 36% compared with the original content, and the phosphogypsum with lower phosphorus content can be finally obtained.
本发明公开了一种磷石膏脱不溶磷的方法，包括如下步骤：磷石膏粉用水再浆制成溶液，将硫酸与磷石膏溶液反应，得到反应料浆，将反应料浆过滤得滤液和固体，用清水对固体进行洗涤，洗涤后磷石膏进行后续处理。本发明用硫酸作为脱磷剂，原料成本低；且过滤后滤液可重复使用，得到的磷石膏中不溶磷较原含量降低36%，能够最终得到磷含量较低的磷石膏。
Method for removing insoluble phosphorus from phosphogypsum
The invention discloses a method for removing insoluble phosphorus from ardealite. The method comprises the following steps: preparing a solution from phosphogypsum powder by using water, reacting sulfuric acid with a phosphogypsum solution to obtain reaction slurry, filtering the reaction slurry to obtain filtrate and solid, washing the solid with clear water, and carrying out subsequent treatment on the washed phosphogypsum. The sulfuric acid is used as a dephosphorizing agent, so that the raw material cost is low; and the filtrate after filtration can be repeatedly used, the content of insoluble phosphorus in the obtained phosphogypsum is reduced by 36% compared with the original content, and the phosphogypsum with lower phosphorus content can be finally obtained.
本发明公开了一种磷石膏脱不溶磷的方法，包括如下步骤：磷石膏粉用水再浆制成溶液，将硫酸与磷石膏溶液反应，得到反应料浆，将反应料浆过滤得滤液和固体，用清水对固体进行洗涤，洗涤后磷石膏进行后续处理。本发明用硫酸作为脱磷剂，原料成本低；且过滤后滤液可重复使用，得到的磷石膏中不溶磷较原含量降低36%，能够最终得到磷含量较低的磷石膏。
Method for removing insoluble phosphorus from phosphogypsum
一种磷石膏脱不溶磷的方法
WANG MINGBO (author)
2021-02-09
Patent
Electronic Resource
Chinese
Method for removing impurities and whitening phosphogypsum
| European Patent Office | 2020
| European Patent Office | 2024
| European Patent Office | 2024