Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum

A technology of scattered metals and hard zinc, applied in the field of vacuum metallurgy of non-ferrous metals, to achieve effective utilization and environmental protection

Inactive Publication Date: 2009-10-28
HULUDAO ZINC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing defects of separating and recovering useful metals from aluminum hard zinc, the present invention proposes a method for producing zinc powder by vacuum distillation of aluminum hard zinc and recovering scattered metal indium and germanium

Method used

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  • Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum
  • Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Get 1000Kg aluminum hard zinc raw material, containing aluminum 10%, iron 15%, indium 0.35%, lead 5%, germanium 0.11%, zinc balance. Put it into the distillation tank through a crane and a feeder, cover the sealing cover, connect the vacuum pump through the exhaust pipe, and carry out vacuuming. When the pressure in the distillation tank reaches 10Pa, turn on the power supply of the heater to heat the heater; the distillation tank passes through 2.2 hours of heating to make the temperature reach 850°C, and then keep the constant temperature for 8 hours. When the vacuum degree is maintained at about 10Pa, when the temperature is cooled to 200°C, turn off the vacuum pump and the cooling water in the condenser water jacket. water, open the sealing lid of the retort, and take out 398.28Kg of residues containing zinc and scattered metal indium and germanium. Release 601.71Kg of zinc powder from the discharge port of the condenser.

Embodiment 2

[0023] Get 1000Kg aluminum hard zinc raw material, containing aluminum 5%, iron 10%, indium 0.2%, lead 2%, germanium 0.02%, zinc surplus. Put it into the distillation tank via a crane and a feeder, cover the sealing cover, connect the vacuum pump through the exhaust pipe, and carry out vacuuming. When the pressure in the distillation tank reaches 15Pa, turn on the power supply of the heater to heat up the heater; the distillation tank passes through 3.2 h heating, the temperature reaches 950°C, and the constant temperature is kept for 8 hours. When the vacuum degree is maintained at about 8Pa, cool down to 200°C, turn off the cooling water in the vacuum pump and condenser water jacket, and open the distillation tank. Seal the lid, take out the residue containing zinc and scattered metal indium and germanium, the weight is 289.65Kg. Open the discharge port of the condenser, and release 710.32Kg of zinc powder from the discharge port of the condenser.

Embodiment 3

[0025] Get 1000Kg aluminum hard zinc raw material, containing aluminum 15%, iron 20%, indium 0.5%, lead 8%, germanium 0.2%, zinc balance. Put it into the distillation tank via a crane and a feeder, cover the sealing cover, connect the vacuum pump through the exhaust pipe, and carry out vacuuming. When the pressure in the distillation tank reaches 15Pa, turn on the power supply of the heater to heat up the heater; the distillation tank passes through 3.2 Heating for h, the temperature reaches 1000°C, and the constant temperature is kept for 8 hours. When the vacuum degree is maintained at about 8Pa, cool down to 200°C, turn off the cooling water in the vacuum pump and condenser water jacket, and open the distillation tank. Seal the lid, take out the residue containing zinc and scattered metal indium and germanium, the weight is 517.43Kg. Open the discharge port of the condenser, and release 482.55Kg of zinc powder from the discharge port of the condenser.

[0026] The direct y...

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Abstract

The invention relates to a method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum. The method comprises the following steps: adding lumpy aluminum hard zinc slag into a distillation pot placed on a heater, then covering a sealing cover, raising the temperature of the heater, generating zinc vapor when the temperature of the heater reaches a vaporizing temperature point of metal zinc, and cooling the zinc vapor in a condenser provided with a condenser sealing cover and a condenser water jacket from an insulating pipe under the action of negative pressure of a vacuum pump connected with an exhaust pipe to form the zinc powder; and separating residues generated after the zinc distillation is finished in the distillation pot, and further producing zinc salt and indium and germanium metals. The method can effectively utilize wastes, is favorable for environmental protection and resource maximized utilization, and is suitable for fully applying the zinc smelting waste to the production.

Description

technical field [0001] The invention relates to a method for extracting metal in the field of vacuum metallurgy of nonferrous metals, in particular to a method for producing zinc powder by vacuum distillation of aluminum hard zinc and recovering scattered metal indium and germanium. Background technique [0002] Aluminum hard zinc is a by-product produced in the zinc distillation process, and its main component is zinc. When the iron content of the zinc concentrate is high, the rectification process needs to add aluminum to remove iron, that is, add aluminum to replace iron, so as to produce low-iron zinc ingots. However, the added aluminum cannot fully participate in the reaction, and the remaining aluminum and the resulting aluminum-iron, aluminum-iron-zinc compounds enter the melting furnace. After melting, the furnace is divided into three layers. Lead, the middle layer is aluminum hard zinc. In addition to zinc, aluminum and iron, aluminum hard zinc also contains a ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B19/04C22B19/30C22B58/00C22B41/00B22F9/12
CPCY02P10/20
Inventor 郭天立程永强未立清贾乙东李继国
Owner HULUDAO ZINC IND CO LTD
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