Process for comprehensive using waste water of phosphatic fertilize and phosphorous chemical industrial

A technology for industrial wastewater and phosphorus chemical industry, which is applied in chemical instruments and methods, water/sewage treatment, phosphate material treatment, etc. It can solve the problems of patent applications and reports of no substitute for pH adjusters, and achieve economical treatment. cost, cost-saving effect

Active Publication Date: 2006-01-25
WENGFU (GRP) CO LTD
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there is no patent application for the use of phosphate fertilizers and phosphate chemical industry wastewater to repla

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Implementation 1: Operate according to the following steps to process phosphate rock with low carbonate content:

[0016] (1) Grinding or grinding the carbonate-type phosphate rock containing 3% (mass fraction) of MgO until the mineral monomers are dissociated, adding clear water and stirring to adjust the mineral content to 40%;

[0017] (2) Add acid waste water: raw ore at a ratio of 0.5:1, stir well, and adjust the pH value of the slurry to 3-5.

[0018] (3) The adjusted ore pulp enters the flotation machine, and the flotation collector is added at the same time. After aeration and scraping, the phosphorus concentrate with an MgO content of 0.5% (mass fraction) can be obtained, and the phosphorus concentrate is useful The component recovery rate reaches more than 94%.

Embodiment 2

[0019] Implementation 2: operate according to the following steps to process phosphate rock with higher carbonate content:

[0020] (2) Grinding or grinding the carbonate-type phosphate rock containing 8% (mass fraction) of MgO until the mineral monomers are dissociated, adding clear water and stirring to adjust the mineral content to 40%;

[0021] (2) Add acid waste water: raw ore at a ratio of 0.7:1, stir well, and adjust the pH value of the slurry to 3-5.

[0022] (3) The adjusted ore pulp enters the flotation machine, and the flotation collector is added at the same time. After aeration and scraping, the phosphorus concentrate with an MgO content of 0.5% (mass fraction) can be obtained, and the phosphorus concentrate is useful The component recovery rate reaches more than 91%.

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

A process for comprehensive utilization of the acidic sewage generated by preparing P fertilizer and P chemicals includes such steps as pulverizing or grinding phosphorus ore, adding clean water, stirring, adding it to acidic sewage, stirring, regulating pH=3-5, floatation while adding floating capture, filling air and removing foam to obtain P ore concentrate.

Description

technical field [0001] The invention relates to the treatment and utilization of waste water, in particular to the utilization method of acid waste water produced in the production process of phosphate fertilizer and phosphorus chemical industrial waste water. Background technique [0002] In the production process of phosphate fertilizer and phosphorus chemical industry, a large amount of acidic wastewater will be produced, mainly including the wastewater produced in the production of sulfuric acid, the wastewater produced in the production of phosphoric acid, the wastewater produced in the production of aluminum fluoride, etc., which contain fluoride, phosphoric acid, phosphoric acid Salt, sulfuric acid and suspended solids. In order to protect the environment, these acid wastewater must be treated to meet the standard before being discharged. At present, the process of graded neutralization of lime milk is usually used to treat this kind of wastewater, so that the treate...

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): C01B25/01C02F1/00
Inventor 赵武强张仁忠曹江洪令狐昌锦庹宇翔邵红生张茂林张世亚任清洪何德飞杨忠权熊贤林吴长坤张瑛徐忠发
Owner WENGFU (GRP) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap