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Experiment on micron-sized particle production of iron ore by rapid unloading of liquid CO2
Fan YB(范永波); Duan WJ(段文杰); Li SH(李世海); Qiao JY(乔继延)
Source PublicationPOWDER TECHNOLOGY
2018-03-01
Volume327Pages:449-455
ISSN0032-5910
Abstract

The average iron content of iron ore is <30%; therefore, crushing, grinding, milling and other processing techniques must be executed before smelting. Currently, it is expensive to break iron ores using mechanical grinding. Experiments have been carried out to develop a novel approach of producing iron ore powder. First, the iron ore is placed in a high-pressure chamber, and then liquid CO2 is injected into the chamber. Second, considering energy recycling, after the iron ore pores are filled with liquid CO2, dissociative liquid CO2 is substituted and collected for cyclic utilization. Third, an initial high pressure is applied inside the chamber using a water pump in order to increase the energy input. Fourth, the pressure is rapidly unloaded. After penetration and gasification expansion, the iron ore will immediately be converted into micron-sized particles. Laser grain size analysis indicated that the grain size of the iron ore particles ranges between 30 and 50 pm, which will satisfy the requirements of gravity separation, magnetic separation and the flotation process. This is a highly efficient and low-cost method that has excellent industrial promotion value. (C) 2017 Elsevier B.V. All rights reserved.

KeywordLiquid Co2 Rapid Unloading Iron Ore Micron-sized Particles
DOI10.1016/j.powtec.2017.12.039
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000425562000043
WOS KeywordPowder ; Shape
WOS Research AreaEngineering, Chemical
WOS SubjectEngineering
Funding OrganizationNational Natural Science Foundation of China [11302229] ; 973 Program [2015CB250903] ; Chinese Academy of Sciences Special Fund for Strategic Pilot Technology [XDB10030303]
DepartmentLMFS工程地质体力学(LEM)
Classification二类/q1
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77920
Collection流固耦合系统力学重点实验室
Corresponding AuthorFan YB(范永波)
AffiliationChinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Fan YB,Duan WJ,Li SH,et al. Experiment on micron-sized particle production of iron ore by rapid unloading of liquid CO2[J]. POWDER TECHNOLOGY,2018,327:449-455.
APA Fan YB,Duan WJ,Li SH,&Qiao JY.(2018).Experiment on micron-sized particle production of iron ore by rapid unloading of liquid CO2.POWDER TECHNOLOGY,327,449-455.
MLA Fan YB,et al."Experiment on micron-sized particle production of iron ore by rapid unloading of liquid CO2".POWDER TECHNOLOGY 327(2018):449-455.
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