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

Process method for extracting crude lead from lead matte

A process method and lead matte technology are applied in the field of extracting crude lead from lead matte, which can solve the problems of low recovery rate of valence metals, and achieve the effects of high lead content, oxidation prevention and short process flow.

Inactive Publication Date: 2019-07-02
ZHUZHOU SMELTER GRP +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have problems such as low recovery rate of valuable metals.

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

[0029] Embodiment 1, the raw material lead matte used in this embodiment is a by-product of pyrometallurgy, and its main chemical composition is: Pb (43.23%), Cu (12.13%), Fe (12.78%), Zn (8.87%) and S (18.35%).

[0030] A kind of embodiment of the processing method that the present invention extracts crude lead from lead matte mainly comprises the following steps:

[0031] (1) Use a crusher to crush 5050g of lead matte to a particle size of 3-7cm. (2) According to the mass ratio of lead matte, soda ash and coke of 100:6:11, weigh the soda ash and coke and mix them with the crushed lead matte to obtain a mixture. (3) Put the obtained mixture in a smelting furnace, raise the temperature of the furnace to 1100° C., and gradually melt the lead matte and become a melt. (4) After the lead matte is completely melted, use an iron stirring tool to carry out intermittent heat preservation and stirring at 1100°C. Stir 4 times in total, once every half an hour, and the duration of eac...

Embodiment 2

[0033] Embodiment 2, the raw material lead matte used in this embodiment is a by-product of pyrometallurgy, and its main chemical composition is: Pb (41.35%), Cu (11.83%), Fe (13.32%), Zn (8.03%) and S (17.18%).

[0034] A kind of embodiment of the processing method that the present invention extracts crude lead from lead matte mainly comprises the following steps:

[0035] (1) Use a crusher to crush 4980 g of lead matte to a particle size of 4 to 8 cm.

[0036] (2) According to the mass ratio of lead matte, soda ash and coke of 100:7:9, weigh soda ash and coke and mix them with the crushed lead matte to obtain a mixture.

[0037] (3) Put the obtained mixture in a smelting furnace, raise the temperature of the furnace to 1300°C, and gradually melt the lead matte and become a melt.

[0038] (4) After the lead matte is completely melted, use an iron stirring tool to carry out intermittent heat preservation and stirring at 1300°C. A total of 2 times of stirring, stirring once ev...

Embodiment 3

[0042] Embodiment 3, the raw material lead matte used in this embodiment is a by-product of pyrometallurgy, and its main chemical composition is: Pb (42.28%), Cu (12.11%), Fe (13.69%), Zn (9.01%) and S (18.24%).

[0043] A kind of embodiment of the process method of the present invention extracting crude lead from lead matte mainly comprises the following steps: (1) 4916g lead matte is crushed to particle diameter with crusher and is 1~6cm. According to the mass ratio of lead matte, soda ash and coke of 100:5:12, the soda ash and coke are weighed and mixed with the crushed lead matte to obtain a mixture. (3) Put the obtained mixture in a smelting furnace, raise the temperature of the furnace to 1100° C., and gradually melt the lead matte and become a melt.

[0044] (4) After the lead matte is completely melted, use an iron stirring tool to carry out intermittent heat preservation and stirring at 1100°C. A total of 6 times of stirring, stirring once every half an hour, and th...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a process method for extracting crude lead from lead matte. The process method comprises the following steps that (1), the lead matte is crushed, the crushed lead matte is mixedwith soda ash and coke to obtain a mixture; (2), the mixture obtained in the step (1) is put into a smelting furnace for heating so as to melt the mixture into a melt, heat preservation and stirringare carried out, wherein a stirring tool used during heat preservation and stirring is an iron stirring tool; and (3), standing and heat preservation are carried out so as to layer the melt after heatpreservation and stirring are finished, wherein an upper layer substance is enriched matte, a lower layer substance is the crude lead, and then the crude lead and the enriched matte are discharged and collected individually. According to the process method for extracting the crude lead from the lead matte, the technological process is short, the recovery rate of valuable metal is high, the recovery rate of the crude lead is higher than 90%, the content of lead in the obtained crude lead is higher than 97%, copper and zinc in the lead matte can be enriched so as to obtain a high-grade raw material which can be directly used for smelting the copper and the zinc.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, in particular to a process for extracting crude lead from lead matte. Background technique [0002] The lead matte produced during lead smelting and lead matte is a melt whose main components are cuprous sulfide, lead sulfide, zinc sulfide and ferrous sulfide. According to the difference of lead smelting raw materials and the difference of lead smelting process, the composition of lead matte produced also varies greatly, and its typical composition is Pb 10-50%, Cu 10-25%, Fe 10-25%, Zn 5-15%, S 15-25%, the total content can be as high as more than 90%, and a small amount of lead oxide, silver sulfide and other metal compounds are entrained. [0003] At present, there are two types of treatment processes for lead matte: fire method and wet method. In recent years, the process of wet treatment of lead matte has developed rapidly, including roasting-sulfuric acid leaching, acidi...

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): C22B13/02C22B5/10
CPCC22B5/10C22B13/02
Inventor 王文军刘敏张天芳
Owner ZHUZHOU SMELTER GRP
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