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

A kind of iron ore biological heap leaching desulfurization process

A desulfurization process and biological pile technology, applied in the direction of improving process efficiency, etc., can solve the problems of excessive consumption of coke limestone, increase production costs, etc., achieve low production costs, reduce hot embrittlement, and reduce sulfur content.

Active Publication Date: 2019-01-15
有研资源环境技术研究院(北京)有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although desulfurization can be achieved during blast furnace smelting, it consumes more coke (increase furnace temperature) and limestone (increase slag alkalinity), so as to increase production costs

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
  • A kind of iron ore biological heap leaching desulfurization process
  • A kind of iron ore biological heap leaching desulfurization process
  • A kind of iron ore biological heap leaching desulfurization process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This process is used in an iron mine in Hebei Province. The main beneficial metal element in the ore is iron with a content of 54.05%. Among them, the most important iron mineral is magnetite, followed by pyrrhotite, pyrite, siderite, limonite, and a small amount of copper mineral chalcopyrite and bornite. The content of S element in the ore is 3.35%. It mainly occurs in pyrrhotite, pyrite and a small amount of chalcopyrite and bornite, and only a very small amount occurs in sulfate minerals. The main element content of this iron ore is shown in Table 1

[0048] Table 1 Chemical multi-element analysis of an iron ore in Hebei Province

[0049]

[0050] The desulfurization process for the above-mentioned ores includes the following steps:

[0051] (1) Rejuvenation and expansion of strains

[0052] Prepare medium: add ammonium sulfate 3g / L, calcium nitrate 0.01g / L, potassium dihydrogen phosphate 0.5g / L, ferrous sulfate 44.6g / L to ordinary tap water, adjust the pH 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 a heap bioleaching desulfurating technique for iron ore. The heap bioleaching desulfurating technique for the iron ore comprises the following working procedures of efficient desulfurizing bacterium strain amplification culture, iron ore heap construction, bacteria solution spraying and lixivium neutralizing treatment. The name of used efficient desulfurizing bacteria is Reteck TS-II, wherein the preservation number in China general microbiological culture collection center is CGMCC: 8337. The heap bioleaching desulfurating technique for the iron ore is suitable for microbial oxidation desulfurization of the sulfur element-containing iron ore and has the characteristics that investment is low, producing cost is low, exhaust gas is not generated, environment pollution is avoided, and the iron loss rate is low.

Description

technical field [0001] The invention relates to an iron ore biological heap leaching desulfurization process, in particular to a biological heap leaching process for removing sulfur elements from the iron ore heap leaching process by utilizing high-efficiency desulfurization bacteria. Background technique [0002] my country is the largest steel producer in the world. In 2013, China ranked first in the world with 779 million tons of crude steel production, accounting for 48.5% of the global crude steel production. Due to its low price and reliable performance, steel has become one of the most used materials in the world, and it is an indispensable component in construction, manufacturing and people's daily life. [0003] As a raw material for iron and steel production, iron ore resources have two characteristics in China: first, there are many lean ore resources, which account for 80% of the total; second, there are more multi-element symbiotic compound ores. Among them, 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
IPC IPC(8): C22B3/18
CPCC22B3/18Y02P10/20
Inventor 尚鹤温建康武彪高文成
Owner 有研资源环境技术研究院(北京)有限公司
PatSnap Eureka logo

PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.

X (Twitter)LinkedInYouTubeSubstack

© 2026 PatSnap. All rights reserved. 

Terms of Service

 | 

Privacy policy

 | 

Modern Slavery Act Transparency Statement