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

Method for removing lead in nickel mixed acid system solution

A lead-removing and systematic technology, applied in photographic crafts, instruments, photographic auxiliary crafts, etc., can solve the problem of high cost, achieve the effect of small footprint, no pollution to the environment, and guaranteed balance

Inactive Publication Date: 2008-10-01
JINCHUAN GROUP LIMITED
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the methods for deep impurity removal for solutions with high lead impurities mainly include extraction method, ion exchange method

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
  • Method for removing lead in nickel mixed acid system solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add clear water to the barium carbonate slurrying tank, turn on the stirring paddle, add barium carbonate evenly for slurrying, the slurry liquid-solid ratio is stable at 10:1; the nickel mixed acid system is a sulfate system, the solution contains 0.004g / l of lead, and the added BaCO 3 The mass ratio of lead content to the nickel mixed acid system solution is 150:1; the reaction time is 50 minutes at a temperature of 60°C and a solution pH of 1.0. By BaCO 3 :Pb 2+ =150: 1 (weight ratio) evenly add the barium carbonate slurry that has been slurried, react for 50 minutes to obtain the deleaded liquid, and send it to the next process. The lead content of the deleaded liquid can reach 0.0024g / l.

Embodiment 2

[0016] Add clear water to the barium carbonate slurry tank, turn on the stirring paddle, and evenly add barium carbonate for slurry, the liquid-solid ratio of the slurry is stable at 10:1; nickel mixed acid system sulfate and chloride mixed system, the solution contains 0.006g / l lead , adding BaCO 3 The mass ratio of the lead content in the nickel-mixed acid system solution is 200:1; under the conditions of a temperature of 70°C and a solution pH of 3.0, the lead-removed solution is obtained after reacting for 40 minutes, which is sent to the next process, and the lead-removed solution contains Lead can reach 0.0027g / l.

[0017] 2. Barium carbonate lead removal operation steps

Embodiment 3

[0019] Add clear water to the barium carbonate slurrying tank, turn on the stirring paddle, and evenly add barium carbonate for slurrying, the slurry liquid-solid ratio is stable at 10:1; the nickel mixed acid system solution is a sulfate system, the solution contains 0.006g / l of lead, add BaCO 3 The mass ratio of the lead content in the nickel-mixed acid system solution is 200:1; under the conditions of a temperature of 65°C and a solution pH of 4.0, the lead-removed solution is obtained after 30 minutes of reaction, which is sent to the next process, and the lead-removed solution contains Lead can reach 0.0028g / l.

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 method for removing lead from nickel-mixed acid system solution and a method for removing impurity lead from the nickel electrolysis mixed acid system solution with the process of removing lead by barium carbonate are related to, characterized in that the lead removing process is to add barium carbonate into the nickel-mixed acid system solution to carry out the deposition removal of the lead. The method of the invention uses barium carbonate to remove the lead impurity elements in the nickel electrolysis mixed acid system solution to purify the solution, thus lightening the lead removing load in the purification procedure, stabilizing and improving the quality of the solution. The mechanical stirring is utilized to equalize the slurry solution, guaranteeing the reaction is completely performed and enhancing the effect of lead removal; lead removing procedure with barium carbonate has less required apparatus, small occupied area, simple procedures and no pollution to the environment.

Description

technical field [0001] A method for removing lead from a nickel mixed acid system solution relates to a method for removing impurity lead from a nickel electrolytic mixed acid system solution using a barium carbonate lead removal process. Background technique [0002] With the continuous expansion of nickel production and consumption scale, the demand for nickel ore resources has increased sharply, and the complexity of raw materials has caused enormous pressure on the processing and production methods of raw materials. In order to ensure product quality, the nickel hydrometallurgy process is gradually being perfected and improved, and the solution purification process for high-impurity raw materials is an important link. [0003] At present, the methods for deep impurity removal for solutions with high lead impurities mainly include extraction method, ion exchange method, oxidative hydrolysis neutralization method, etc., but these processes require a lot of equipment and ma...

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): C22B3/46C25C1/08C22B23/00
CPCY02P10/20
Inventor 国琳郑军福曹康学陈涛郑继祖
Owner JINCHUAN GROUP LIMITED