Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing compound containing zinc by utilizing raw ore containing zinc

A composite and raw ore technology, applied in the direction of zinc oxide/zinc hydroxide, process efficiency improvement, calcium/strontium/barium oxide/hydroxide, etc., can solve the problems of poor comprehensive economic benefits, inability to process, and leaching rate Unsatisfactory problems, to achieve the effect of solving the problem of process recovery rate and high-quality goods grade, realizing economic and environmental protection utilization, and avoiding the pressure of water treatment

Inactive Publication Date: 2018-12-07
CHONGQING DONGQUN TECH CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The selectivity of sulfuric acid leaching method is low, and a large amount of soluble silicon in the ore will be leached, and the generated colloidal silicon is difficult to filter, and the acid leaching method generates a large amount of sulfate residue, which causes great environmental protection treatment pressure; sulfuric acid leaching cannot effectively Treat the zinc silicate, zinc ferrite and other components in the ore
The calcium chloride method cannot effectively deal with the leaching of zinc silicate, zinc ferrite and other components in the raw ore, and the leaching rate is not ideal, requiring high temperature leaching, and the comprehensive economic benefits are not good
In the ammonium chloride method, after the raw ore is leached, the process of recovering the zinc component from the leaching solution is very difficult, which is not suitable for industrial application.
[0007] Therefore, the existing technology is not satisfactory for the utilization of low-grade zinc-containing raw ore

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

[0119] In a zinc mine in Yunnan, the zinc content is 5.6%, and the oxidation rate of the raw ore is 96.3%. The main form of zinc in this mine is zinc carbonate.

[0120] Get 300 grams of zinc-containing raw ore, put into 900 milliliters of ammonia-ammonium bicarbonate mixed solution (10% of total ammonia mass concentration, 3% of carbonate root mass concentration) and carry out stirring and leaching, the leaching temperature is normal temperature, and the stirring time is 2 hours, Then filter, the filtered liquid contains 1.632% zinc (calculated in zinc oxide equivalent), the mass concentration of carbonate in the liquid is 4.23%, and the increased part is brought in by zinc carbonate in the raw ore. According to the test data, the recovery rate of soluble zinc in the raw ore during the leaching process is 90.79%, and the recovery rate of total zinc is 87.43%.

[0121] Purify the zinc ammonia complex solution obtained by filtering.

[0122] Take 600 ml of zinc-ammonia complex...

Embodiment 2

[0124] In a zinc mine in Chongqing, the zinc content is 4.7%, and the oxidation rate of the raw ore is 95.52%. The main form of zinc in this mine is zinc silicate.

[0125] Get 300 grams of zinc-containing raw ore, put into 900 milliliters of ammonia-ammonium bicarbonate mixed solution (10% of total ammonia mass concentration, 3% of carbonate root mass concentration) and carry out stirring and leaching, the leaching temperature is normal temperature, and the stirring time is 2 hours, Then filter, the filtered liquid contains 1.367% zinc (calculated in zinc oxide equivalent), the mass concentration of carbonate in the liquid is 3.54%, and the increased part is brought in by zinc carbonate in the raw ore. According to the inspection data, the recovery rate of soluble zinc in the raw ore during the leaching process is 91.35%, and the recovery rate of total zinc is 87.26%.

[0126] Purify the zinc ammonia complex solution obtained by filtering.

[0127] Take 600 ml of zinc-ammoni...

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 method relates to a method for producing a compound containing zinc by utilizing raw ore containing zinc. The method comprises the steps of digestion, optional purification, decarbonization, calcium zincate compounding, optional rinsing and calcination. According to the method for producing the compound containing zinc by utilizing the raw ore containing zinc, hydrometallurgical leaching is combined with a compounding technology; economical and environmentally-friendly utilization of ultralow-grade zinc ore is achieved; the application range is wide; ammonia distillation is not needed; themethod is simple and easy to be implemented; technological energy consumption is lowered greatly; multi-aspect problems such as water treatment pressure caused by ammonia distillation, potential safety hazards of high temperature and high pressure, equipment corrosion and the like are also avoided; the environmental problem confronted that technological water balance is influenced by surplus water volume brought in by the steam in ammonia circulation technology is solved; the problems with technology recovery rate and quality grade are solved; pollution is little; auxiliary materials can be recycled; compounding of calcium zincate in a zinc-ammonia environment is achieved for the first time; and the compound containing zinc is acquired via calcium zincate.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical industry, relates to resource utilization of low-grade zinc-containing raw ore, in particular to a method for producing zinc oxide and calcium oxide composites by utilizing low-grade zinc oxide raw ore. Background technique [0002] The production and consumption of zinc in my country ranks first in the world. Domestic zinc resources cannot meet the production requirements, and a large amount of zinc raw materials need to be imported every year. my country is a country rich in zinc oxide resources. The reserves of zinc metal in zinc oxide ore in my country are about 28 million tons, accounting for about 27.7% of the zinc metal reserves in zinc oxide ore in the world. Zinc oxide mines in my country generally have a low zinc grade, with an average grade of less than 5%. At present, the stagnant ore and lean ore reserves that cannot be economically utilized account for the vast majority, a...

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 Applications(China)
IPC IPC(8): C22B19/20C22B3/14C22B3/44C22B19/34C01G9/03C01F11/02
CPCC01F11/02C01G9/03C22B19/24C22B19/26C22B19/34Y02P10/20
Inventor 岳辉伟李世川龙忠祥蒋涛刘权锋
Owner CHONGQING DONGQUN TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com