New method for washing chlorine of nickelous hydroxide

A technology of nickel hydroxide and a new method is applied in the field of slag washing section in the chemical and metallurgical fields, which can solve the problems of large investment, high operating cost, long process, etc., and achieve the effect of simplifying the slag washing process and reducing labor costs.

Inactive Publication Date: 2016-01-27
夏栋
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these slag washing methods have disadvantages such

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
  • New method for washing chlorine of nickelous hydroxide
  • New method for washing chlorine of nickelous hydroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] A nickel hydroxide sample contains 45% nickel and 0.5% chlorine on a dry basis, with a nickel-to-chlorine ratio of 90. After it is ball-milled to -300 mesh by a ball mill, it enters the material inlet (1) at the top of the slag washing column for slag washing. Simultaneously, the alkaline water with the pH of 13.5 prepared with new water and sodium hydroxide enters the washing water inlet (4) below the slag washing column.

[0020] After being washed by the slag washing column, the clean nickel hydroxide slurry is discharged from the material outlet (3) at the bottom of the slag washing column, and the slag washing water overflows from the washed water outlet (2) above the slag washing column. After the slag washing water overflowed from the washing water outlet (2) of the slag washing column passes through the sedimentation, the overfl...

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 new method for washing chlorine of nickelous hydroxide and related equipment of the new method. The method and equipment are used for continuous washing of the nickelous hydroxide and other solid slag. The equipment is cylindrical, a to-be-washed material inlet and a post-washing water overflow outlet are formed in the upper end of the equipment, and a washed material outlet and a washing water inlet are formed in the lower end of the equipment. Materials flow downwards, washing water flows upwards, and then continuous backwashing is achieved. According to the method, the solid nickelous hydroxide is ground and pulpified to be pumped into the to-be-washed material inlet of the slag washing equipment, and meanwhile alkaline water is pumped into the washing water inlet for slag washing. In the existing nickel wet metallurgy, the influence of the electrodeposition of chlorine on nickel sulfate is very large, chlorine can be generated and pollute the environment, and a pole plate can be corroded. Thus, chlorine washing treatment needs to be carried out on the nickelous hydroxide of a finished product with high chlorine content in the front section. According to the new method, the input expense of the equipment can be reduced, the slag washing water amount is reduced, and cost is reduced; and the slag washing effect can be improved, and the nickel-chlorine ratio is increased.

Description

technical field [0001] The invention relates to a slag washing section in the fields of chemical industry, metallurgy, etc., in particular to a new method for washing chlorine with nickel hydroxide and related equipment capable of realizing continuous slag washing. Background technique [0002] In hydrometallurgy, chlorine has a great influence on the electrowinning of nickel sulfate, which will not only produce chlorine gas to pollute the environment, but also corrode the plates. Therefore, it is particularly important to control the chlorine content in the finished nickel hydroxide in its front section. [0003] In the existing slag washing process, the washing of all kinds of solid slag is mostly carried out by means of stirring tank, filter or thickener and equipment, such as filter press CCD countercurrent washing slag. These slag washing methods have the disadvantages of large investment, long process and high operating costs, and it is difficult to achieve the indica...

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): C22B3/22
CPCY02P10/20
Inventor 夏栋
Owner 夏栋
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