ARSENIC-IRON ALLOY, AND PREPARATION METHOD AND RESOURCEFUL TREATMENT METHOD THEREFOR

WIPO Patent Application WO/2024/061035

A1

Provided in the present invention is a preparation method for an arsenic-iron alloy. The preparation method comprises the steps of: S1, subjecting arsenic powder and iron powder at a molar ratio of (0.1-2) : 1 to a ball-milling treatment under the protection of an inert atmosphere, so as to obtain a pretreated substance; and S2, subjecting the pretreated substance to a vacuum hot pressing sintering treatment, so as to obtain an arsenic-iron alloy, wherein the vacuum hot pressing sintering treatment comprises: placing the pretreated substance in a vacuum environment, sintering the pretreated substance, and applying a pressure ranging from 30 MPa to 50 MPa to the pretreated substance during the sintering process, the sintering process comprising: heating the pretreated substance from room temperature to 400-500ºC and maintaining the temperature for 0.5-1 hour, and then heating the pretreated substance from 400-500ºC to 600-800ºC and maintaining the temperature for 0.5-1 hour. In the present invention, an arsenic-iron alloy with high performance and low leaching toxicity can be obtained.

MIN XIAOBO (CN)
CHAI FEI (CN)
ZHAO FEIPING (CN)
CHAI LIYUAN (CN)
LIANG LIAOJIE (CN)
PENG CONG (CN)
ZHOU YIWEI (CN)

PCT/CN2023/117915

March 28, 2024

September 11, 2023

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UNIV CENTRAL SOUTH (CN)

C22C1/04; C22C28/00; C22C33/02; C22C38/00

CN115491534A	2022-12-20
CN102522154A	2012-06-27
CN110422883A	2019-11-08
CN101407340A	2009-04-15
CN114822976A	2022-07-29
JP2012066960A	2012-04-05
US20140353159A1	2014-12-04

CHANGSHA CRED-INNOVATION INTELLECTUAL PROPERTY AGENCY FIRM et al. (CN)

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