Leaching solution and leaching process of zinc

A leaching solution and leaching technology, which is applied in the field of zinc leaching solution and leaching technology, can solve the problems of insufficient zinc extraction rate, low preparation efficiency, and low zinc purity, and achieve easy separation and preparation, convenient refining, and high efficiency The effect of preparation

Inactive Publication Date: 2018-11-20
淄博淦达环保科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of zinc mainly include the following: 1) calcining sphalerite or sphalerite in the air into zinc oxide, and then reducing it with carbon to obtain it, but the purity of the zinc obtained is low; 2) making zinc oxide Mixed with coke, heated in a blast furnace to 1373K~1573K, the zinc is distilled out, and the purity is about 98%; but the energy consumption is too high, 3) After leaching into zinc sulfate with sulfuric acid, the

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

[0020] 1) After crushing the zinc concentrate, add the zinc leaching solution. The zinc content in the zinc concentrate is 43.2% by mass percentage. The solid-to-liquid ratio g:L of zinc concentrate and zinc leaching solution is 2:5.6; leaching is carried out under stirring conditions while electrochemical reduction is carried out. The voltage of electrochemical reduction is 15 V and the current is 50 A. The electrode used It is a tungsten electrode; the leaching temperature is 80°C, and the leaching time is 2h; the leaching solution of zinc is characterized in that, it is composed of water and the following raw materials by weight: 35.2 parts of ferric chloride, 54.7 parts of sodium chloride, chlorine 5.1 parts of yttrium chloride, 5.2 parts of hydrochloric acid;

[0021] 2) Add 0.61% zinc powder of zinc concentrate quality, filter to obtain filtrate X1 and filter residue Y1; filtrate X1 is evaporated and crystallized to obtain zinc chloride, and the evaporated steam is conde...

Embodiment 2

[0024] 1) After crushing the zinc concentrate, add the zinc leaching solution. The zinc content in the zinc concentrate is 43.2% by mass percentage. The solid-to-liquid ratio g: L of zinc concentrate and zinc leaching solution is 2:5; leaching is carried out under stirring conditions and electrochemical reduction is carried out at the same time. The voltage of electrochemical reduction is 15V and the current is 30A. The electrodes used are Tungsten electrode; the leaching temperature is 85°C, and the leaching time is 2.5h; the leaching solution of zinc is characterized in that it consists of water and the following raw materials by weight: 33.2 parts of ferric chloride, 55.7 parts of sodium chloride, chlorine 5.4 parts of yttrium chloride, 5.7 parts of hydrochloric acid;

[0025] 2) Add zinc powder of 1% of the quality of zinc concentrate, filter to obtain filtrate X1 and filter residue Y1; filtrate X1 is evaporated and crystallized to obtain zinc chloride, and the evaporated ...

Embodiment 3

[0028] 1) After crushing the zinc concentrate, add the zinc leaching solution. The zinc content in the zinc concentrate is 43.2% by mass percentage. The solid-to-liquid ratio g: L of zinc concentrate and zinc leaching solution is 2:6; leaching is carried out under stirring conditions while electrochemical reduction is carried out. The voltage of electrochemical reduction is 25 V and the current is 70 A. The electrode used It is a tungsten electrode; the leaching temperature is 80°C, and the leaching time is 2 h; the leaching solution of zinc is characterized in that it consists of water and the following raw materials by weight: 37.6 parts of ferric chloride, 51.8 parts of sodium chloride, 4.7 parts of yttrium chloride, 4.7 parts of hydrochloric acid;

[0029] 2) Add 0.5% zinc powder of zinc concentrate quality, filter to obtain filtrate X1 and filter residue Y1; filtrate X1 is evaporated and crystallized to obtain zinc chloride, and the evaporated steam is condensed and retur...

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 a leaching solution and a leaching process of zinc, and belongs to the technical field of zinc preparation methods. The leaching solution is characterized by comprising waterand the following raw materials by weight: 31.2-38.6 parts of ferric chloride, 49.8-58.7 parts of sodium chloride, 4.3-6.2 parts of yttrium chloride and 4.2-6.7 parts of hydrochloric acid. The leaching process comprises the following steps that zinc concentrate is crushed, then zinc leaching solution is added, and the solid-liquid ratio g : L of the zinc concentrate to the zinc leaching solution is 1~3 : 4~7; electrochemical reduction is carried out under the stirring condition, and meanwhile electrochemical reduction is carried out, the leaching temperature is 40 DEG C-50 DEG C, and the leaching time is 2.5 h-3 h; zinc powder accounting for 0.01% -1% of the mass of the zinc concentrate is added and filtered to obtain filtrate X1 and filter residue Y1; and the filtrate X1 is evaporated andcrystallized to obtain zinc chloride, and the evaporated steam is condensed and then returned to a zinc leaching solution for reuse. According to the leaching solution and the leaching process, the zinc in the ore can be fully leached. The used leaching solution can be recycled after the required zinc is separated.

Description

technical field [0001] A zinc leaching solution and a leaching process belong to the technical field of zinc preparation methods. Background technique [0002] Zinc concentrate is generally produced from zinc-zinc ore or zinc-containing ore through crushing, ball milling, foam flotation and other processes, which meet the national standard and have a high zinc content. Zinc can be alloyed with a variety of non-ferrous metals, the most important of which are brass composed of zinc and copper, tin, zinc, etc., and can also be used to form die-cast alloys with aluminum, magnesium, copper, etc. Zinc is mainly used in iron and steel, metallurgy, machinery, electrical, chemical industry, light industry, military and medicine and other fields. At present, the preparation methods of zinc mainly include the following: 1) calcining sphalerite or sphalerite in the air into zinc oxide, and then reducing it with carbon to obtain it, but the purity of the zinc obtained is low; 2) making ...

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): C22B19/20C22B3/10
CPCC22B19/22Y02P10/20
Inventor 李百荃李军
Owner 淄博淦达环保科技有限公司
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