Method for removing arsenic from tungsten-containing solid

The invention discloses a method for removing arsenic from tungsten-containing solid. The method comprises the following steps: (1) drying the tungsten-containing solid to obtain dried tungsten-containing solid; (2) carrying out fine grinding treatment on the dried tungsten-containing solid to obtai...

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Bibliographische Detailangaben
Hauptverfasser:	XU GUOZUAN, ZHANG QIULIN, LYU JIANGTAO, HUANG ZEHUI, LAI XINGREN, DENG DENGFEI, FU YU, XU LIQIANG, ZHAO LIFU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CHEMISTRY DISPOSAL OF SOLID WASTE FERROUS OR NON-FERROUS ALLOYS FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES ORFURNACES, KILNS, OVENS OR RETORTS KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS RECLAMATION OF CONTAMINED SOIL SOIL RETORTS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses a method for removing arsenic from tungsten-containing solid. The method comprises the following steps: (1) drying the tungsten-containing solid to obtain dried tungsten-containing solid; (2) carrying out fine grinding treatment on the dried tungsten-containing solid to obtain tungsten-containing solid particles; and (3) conveying the tungsten-containing solid particles toa rotary furnace and calcining in nitrogen or argon atmosphere with a flow rate of 1-100m /h to obtain tungsten-containing solid without arsenic and arsenic-containing gas, wherein in the step (1),the tungsten-containing solid is selected from at least one of tungsten concentrate, tungsten slag and arsenic-containing sludge obtained by smelting tungsten concentrate. On the one hand, the methodis capable of removing arsenic from the tungsten concentrate and avoiding regeneration of hazardous solid waste in the smelting process of the tungsten concentrate; on the other hand, the method is capable of removing arsenic fro