Equipment for directly producing arsenic by utilizing high-arsenic dust and production method
An arsenic fume and direct technology is applied to the equipment and production field for directly producing arsenic by using high arsenic fume and dust, which can solve the problems of difficult to achieve clean and safe production, use of hazardous chemicals, long process flow, etc. Injury of toxic substances, effect of short process flow
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[0027] Example 1
[0028] Using arsenic-containing tin fume as raw material (the main element content is As60%, Sn5%, Pb1.17%), the temperature of the direct current furnace is controlled at 1200℃±50℃, and the control furnace pressure parameter is: -20~-10Pa. The tin slag with arsenic content less than 4%, the tin content in the slag is higher than 8%, the direct yield of tin is greater than 80%, the grade of arsenic trioxide is more than 95%, the temperature of the deoxidizer is controlled at 700~800℃, the reduction and condensation of metal arsenic are integrated The temperature of the chemical device is controlled at 800℃±50℃, and the obtained metal arsenic product contains 99.94% of arsenic.
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[0029] Example 2
[0030] Using arsenic-containing tin smoke and dust as raw materials (the main element content is As55%, Sn6%, and Pb2.36%), the temperature of the direct current furnace is controlled at 1000℃±100℃, and the control furnace pressure parameter is: -5~0Pa, arsenic can be obtained The amount of tin slag is less than 4%, the tin content in the slag is more than 8%, the direct yield of tin is more than 80%, the grade of arsenic trioxide is more than 95%, the temperature of the deoxidizer is controlled at 700-800℃, and the reduction and condensation of metal arsenic are integrated The temperature of the device is controlled at 700℃±50℃, and the metal arsenic product obtained contains 99.94% arsenic.
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[0031] Example 3
[0032] Using white smoke and dust as raw materials (the main element content is As40%, Cu6%, Pb7%, Zn5%), the temperature of the direct current furnace is controlled at 1300℃±50℃, and the control furnace pressure parameter is: -5~0Pa, the arsenic content can be obtained Copper slag is less than 4%, the copper content in the slag is higher than 10%, the direct yield of copper is greater than 80%, the grade of arsenic trioxide is more than 95%, the temperature of the deoxidizer is controlled at 700-800℃, and the integrated device for reducing and condensing metal arsenic The temperature is controlled at 750°C±50°C, and the obtained metal arsenic product contains 99.91% arsenic.
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