Extraction method of platinum in high-concentration platinum solution

A high-concentration, solution technology, applied in the field of platinum metal extraction, can solve the problems of small extraction capacity, inability to extract and separate platinum, and weak one-time extraction ability.

Active Publication Date: 2015-07-15
CHONGQING MATERIALS RES INST
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, in the platinum extraction system prepared by industrial extraction agents, the concentration of platinum waste liquid is generally around 10g / L or even lower. The reason is that if the concentration of platinum waste liquid is increased, the concentration of extraction associates formed during the extraction process will be high. , leading to turbidity of the extraction system, difficulty in phase separation, and serious precipitation, resulting in the inability to extract and separate platinum, and the extraction system (such as 100% TBP, N235 + n-dodecane + octanol) prepared by the above-mentioned extractant is commonly used at present. It usually takes three to four repeated extractions to achieve a cumulative extraction rate of ≥99.5%. The extraction capacity of the extraction system (including factors such as extraction agent, diluent, acid-base type and its concentration) is small, and the extraction capacity at one time is weak. Platinum The overall extraction efficiency is low

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

[0022] Preparation of platinum solution: Accurately weigh 40.00g of thermocouple platinum waste, put it into a beaker, add 200ml of aqua regia, aqua regia is made of concentrated hydrochloric acid and concentrated nitric acid in a volume ratio of 3:1, cover with a watch glass, and put it on the electric heating plate Heat to dissolve. After the waste material is dissolved, open the watch glass, and when concentrated to about 100ml volume, add 20ml concentrated hydrochloric acid to remove nitric acid, continue to concentrate to about 100ml volume, and do this 4 times until no brownish-yellow gas emerges. Continue to concentrate to a volume of about 50ml, add 10ml of deionized water to remove hydrochloric acid, continue to concentrate to a volume of about 50ml, and do this three times to remove the hydrochloric acid in the solution. Continue to concentrate until nearly dry, and dissolve in a 1L volumetric flask with a hydrochloric acid solution with a concentration of 4mol / L to ...

Embodiment 2

[0028] Preparation of platinum solution: Accurately weigh 40.00g of thermocouple platinum waste, put it into a beaker, add 200ml of aqua regia, aqua regia is made of concentrated hydrochloric acid and concentrated nitric acid in a volume ratio of 3:1, cover with a watch glass, and put it on the electric heating plate Heat to dissolve. After the waste material is dissolved, open the watch glass, and when concentrated to about 100ml volume, add 20ml concentrated hydrochloric acid to remove nitric acid, continue to concentrate to about 100ml volume, and do this 4 times until no brownish-yellow gas emerges. Continue to concentrate to a volume of about 50ml, add 10ml of deionized water to remove hydrochloric acid, continue to concentrate to a volume of about 50ml, and do this three times to remove the hydrochloric acid in the solution. Continue to concentrate until nearly dry, and dissolve in a 1L volumetric flask with a hydrochloric acid solution with a concentration of 4mol / L to ...

Embodiment 3

[0034] Preparation of platinum solution: Accurately weigh 40.00g of thermocouple platinum waste, put it into a beaker, add 200ml of aqua regia, aqua regia is made of concentrated hydrochloric acid and concentrated nitric acid in a volume ratio of 3:1, cover with a watch glass, and put it on the electric heating plate Heat to dissolve. After the waste material is dissolved, open the watch glass, and when concentrated to about 100ml volume, add 20ml concentrated hydrochloric acid to remove nitric acid, continue to concentrate to about 100ml volume, and do this 4 times until no brownish-yellow gas emerges. Continue to concentrate to a volume of about 50ml, add 10ml of deionized water to remove hydrochloric acid, continue to concentrate to a volume of about 50ml, and do this three times to remove the hydrochloric acid in the solution. Continue to concentrate until nearly dry, and dissolve in a 1L volumetric flask with a hydrochloric acid solution with a concentration of 4mol / L to ...

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 relates to an extraction method of platinum in a high-concentration platinum solution. The method comprises the following steps of 1) diluting a high-concentration platinum waste dissolving solution with a hydrochloric acid solution with the concentration being 4mol / L; and 2) preparing the platinum solution on which the first-grade extraction is performed by an extraction agent in a dilution manner by taking normal octane as a diluent and N-normal-butyl valnoctamide as a solute and discharging a raffinate so as to obtain an extract containing the platinum. By utilizing the method, the concentration of the platinum in the material solution can be improved to 20g / L; the first-grade extraction rate E is greater than or equal to 99.5%; the technological process is reduced; and the treatment time is shortened. Thus, the method is efficient.

Description

technical field [0001] The invention relates to the field of platinum metal extraction, in particular to a method for extracting platinum in a high-concentration platinum solution. Background technique [0002] Platinum group metal elements are very rare in the earth's crust, and each ton of solid matter in the earth's crust contains a few tenths of grams to a few tenths of a few grams, the least of which is rhodium, etc., and each ton contains about 1×10 -3 grams, platinum content per ton contains about 5×10 -3 gram. Platinum and rhodium belong to the platinum group metals. Because of their high melting point, good electrical conductivity, corrosion resistance and high temperature stability, high temperature strength and high temperature creep ability, they become important materials for modern industry and national defense construction. Widely used in aviation, aerospace, missiles, rockets, atomic energy, microelectric technology, chemical industry, glass industry, gas p...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22B11/00C22B7/00
CPCY02P10/20
Inventor 罗凤兰吴保安刘庆宾陈小军翟步英唐会毅汪建胜王云春陈德茂兰莎陈兴汉赵安中潘成刚
Owner CHONGQING MATERIALS RES INST
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