Phosphorous removal method for manganous sulfate produced from high-phosphorus rhodochrosite

A manganese sulfate solution, ferrous sulfate technology, applied in manganese sulfate and other directions, can solve the problems of environmental pollution, high energy consumption, only applicable

Inactive Publication Date: 2014-05-28
CHONGQING UNIV
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are indeed many methods for removing phosphorus (dephosphorization) for different types of high-phosphorus manganese ores. However, in these methods, some operations are more complicated, some have higher energy consumption, and some May pollute the environment
In particular, these methods are all carried out in the beneficiation stage, and some are only applicable t

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
  • Phosphorous removal method for manganous sulfate produced from high-phosphorus rhodochrosite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The dephosphorization method of manganese sulfate solution made from high-phosphorus rhodochrosite is characterized in that the method has the following steps:

[0012] (1) At room temperature, put the manganese sulfate solution made of high-phosphorus rhodochrosite into the stirring tank, and then add ferrous sulfate (FeSO 4 ·7H 2 O), hydrogen peroxide (H 2 o 2 ) solution to form a mixed solution; then carry out the oxidation reaction under stirring (the stirring time to ensure sufficient oxidation is usually only 3 to 5 minutes);

[0013] Wherein, the phosphorus concentration of manganese sulfate solution is between 2.5~3.2g / l, and the mol ratio=1.0~2: 1 of phosphorus in iron ion and manganese sulfate solution in ferrous sulfate, the mol ratio of iron ion in hydrogen peroxide and ferrous sulfate= 0.5~1.25:1;

[0014] (2) Add concentrated ammonia water to the mixed solution obtained in step (1) to adjust the pH value to 3-5, and then fully stir at room temperature ...

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 provides a phosphorous removal method for manganous sulfate produced from high-phosphorus rhodochrosite. The phosphorous removal method comprises the steps of (1), at the room temperature, adding ferrous sulfate and a hydrogen peroxide solution to a manganous sulfate solution produced from high-phosphorus rhodochrosite to form a mixed solution, and then carrying out an oxidization reaction in a stirring state, (2) adding stronger ammonia water to the mixed solution obtained in the step (1) to regulate the pH value to the range from 3 to 5, and then thoroughly stirring under the room temperature to obtain a mixed slurry, and (3) standing and precipitating the mixed slurry obtained in the step (2), and then filtering and separating, and obtaining the filtrate, namely, a low-phosphorus manganous sulfate solution. Compared with the prior art, the phosphorous removal method is capable of effectively avoiding the problems of complex operation, high energy consumption and/or pollution on the environment possibly caused by phosphorous removal during mineral separation, and also has the advantages of mild reaction conditions and relatively lower cost.

Description

technical field [0001] The invention relates to a method for dephosphorizing the manganese sulfate solution prepared from high phosphorus rhodochrosite. Background technique [0002] Metal manganese (Mn) is an important industrial raw material, and electrolysis is one of the methods to obtain metal manganese. The basic steps are as follows: firstly, manganese ore is used as raw material, and after it is crushed, sulfuric acid is added to make manganese-containing leaching solution—manganese sulfate solution; to obtain manganese metal. Manganese ore in my country is mostly lean ore, and the content of harmful impurities is relatively high. Due to the high phosphorus content in the electrolysis process, not only will the anode potential be greatly increased, oxygen will be precipitated, the current efficiency will be reduced, and the anode will be corroded and damaged rapidly, which will lead to low efficiency of the cathode metal manganese plate; Economic losses. In addit...

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): C01G45/10
Inventor 谢昭明黄国平刘作华陶长元杜军范兴刘仁龙周小霞孙大贵唐金晶孔令峰左赵宏张兴然程亚亚李文生彭浩舒建成
Owner CHONGQING UNIV
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