高磷铁矿脱磷技术现状及磷资源化提取新方法

doi:10.13228/j.boyuan.issn0449-749x.20160063

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Abstract In order to make good use of huge amount of high phosphorous iron ore for the ironmaking industry， the characteristics and advances in the dephosphorization technologies of high phosphorus iron ore were introduced， such as mill run， chemical leaching， bio-leaching and high-temperature dephosphorization methods. The feasibility of recovering the phosphorus as a resource was discussed. A novel process based on the acid leaching and selective adsorption was proposed to recover the phosphorus from high phosphorus iron ore and slag after dephosphorization. The principle， the technological process and the characteristics were also stated in details. The best advantages of the proposed novel process to recover the phosphate resource from the acidic leach liquor of high phosphorus iron ore are as follows： firstly， direct enrichment of phosphate from the acidic leach liquor by using the novel adsorbents with a selective adsorption behavior， which means that only the phosphate is uptaken onto the adsorbent， saves the residual acid and reduces the acid consumption； secondly， high pure phosphate compound is obtained as the results of the selective adsorption by elution with alkaline solution， which makes the recovered phosphate product be able to be used as the high quality fertilizer in the agricultural fields； thirdly， reusing of adsorbents can be realized， which helps to reduce the material cost and environmental load. The above three merits of the novel process make it a unique and attractive route to recover the phosphate resource from the huge amount of iron ores in China.

Key words： High phosphrous iron ore dephosphorization recovery of phophorous as a resource novel adsorbent for phosphorous extraction.

Received: 25 February 2016 Published: 08 October 2016

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TF111.3

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	Articles by authors
	XIU Yi-Fan
	HUANG Kai
	GUO Tie-Cheng
	ZHU Hong-Min

Cite this article:

XIU Yi-Fan,HUANG Kai,GUO Tie-Cheng等. Advance in dephosphorisation of high phosphorus iron ore and new technology of recovering phosphorus as a resource[J]. Iron and Steel, 2016, 51(10): 1-5.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20160063 OR http://www.chinamet.cn/Jweb_gt/EN/Y2016/V51/I10/1

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