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Composite purification method for zinc and zinc alloy

A composite purification, zinc alloy technology, applied in the field of purification, can solve the problems of cumbersome devices, small filtration capacity, undeveloped and other problems, and achieves the effects of low cost and simple device

Inactive Publication Date: 2011-08-10
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device is cumbersome and the filtration capacity is very small, so it can only be used for pouring small zinc alloy castings weighing tens of kilograms
At present, a large number of zinc alloy purification technologies outside the furnace have not yet been developed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The present invention is achieved in this way. The method steps are: before the zinc melt or zinc alloy melt enters the clean room from the smelting furnace tank, it is purified by one-stage micron bubbles. The purification method adopts industrial pure nitrogen with a pressure of 0.3 MPa. The pore size of the air plug is set to 30 μm. After the first-level micron bubbles are purified, it flows through the first-level ceramic foam filter plate. The first-level ceramic foam filter plate has a pore size of 10ppi and a thickness of 40mm. Finally, after being purified by the two-pole foam ceramic filter plate, the two-pole foam ceramic filter plate has a pore size of 20ppi and a thickness of 30mm, and enters the front chamber of the launder, waiting for pouring. The purification method of the secondary micron bubble purification adopts industrial pure nitrogen, the pressure is 0.3MPa, the aperture of the air blowing plug is set to 30 μm, and the air blowing plug of the prima...

Embodiment 2

[0013] The present invention is achieved in this way. The method steps are: before the zinc melt or zinc alloy melt enters the clean room from the smelting furnace tank, it is purified by one-level micron bubbles. The purification method adopts industrial pure nitrogen with a pressure of 0.8 MPa. The pore size of the air plug is set to 1 μm. After the first-level micron bubbles are purified, it flows through the first-level ceramic foam filter plate. The first-level ceramic foam filter plate has a pore size of 15ppi and a thickness of 60mm. Finally, after being purified by the two-pole foam ceramic filter plate, the two-pole foam ceramic filter plate has a pore size of 40ppi and a thickness of 50mm, and enters the front chamber of the launder, waiting for pouring. The purification method of the secondary micron bubble purification adopts industrial pure nitrogen, the pressure is 0.8 MPa, the aperture of the air blowing plug is set to 1 μm, and the air blowing plug of the primar...

Embodiment 3

[0015] The present invention is achieved in this way. The method steps are: before the zinc melt or zinc alloy melt enters the clean room from the smelting furnace tank, it is purified by one-level micron bubbles. The purification method adopts industrial pure nitrogen, the pressure is 0.6MPa, The pore diameter of the air plug is set to 1 μm. After the first-level micron bubble purification, it flows through the first-level ceramic foam filter plate. The first-level foam ceramic filter plate has a pore size of 12ppi and a thickness of 50mm, and enters the intermediate purification room, where it is purified by the second-level micron bubbles. Finally, after being purified by the two-pole foam ceramic filter plate, the two-pole foam ceramic filter plate has a pore size of 30ppi and a thickness of 40mm, and enters the front chamber of the launder, waiting for pouring. The purification method of the secondary micron bubble purification adopts industrial pure nitrogen, the pressure...

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PUM

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Abstract

The invention discloses a composite purification method for zinc and zinc alloy. The method comprises the following steps of: before zinc melt or zinc alloy melt is fed into a purification chamber from a furnace tank of a smelting furnace, performing primary micron bubble purification, wherein industrial pure nitrogen is adopted in the purification mode, the pressure intensity is 0.3 to 0.8MPa, and the aperture of an air blowing plug is set at 30 microns to 1 micron; after the primary micron bubble purification, making the melt flow through a primary bubble ceramic filter plate to enter a middle purification chamber; and after secondary micron bubble purification and purification with a secondary bubble ceramic filter plate, making the melt enter a sluice front chamber to wait for casting. The device is simple, the cost is low, and the method totally has no environmental pollution and accords with the requirement of modern green production.

Description

technical field [0001] The invention relates to a purification method, in particular to a zinc and zinc alloy composite purification method. Background technique [0002] Melt purification is a key technology to ensure the metallurgical quality of alloy materials. The purpose of zinc alloy melt purification is mainly to reduce the gas content, oxide inclusions and intermetallic compounds in the melt. Traditional zinc alloy purification can be carried out by static clarification, chlorine salt treatment, inert gas blowing and filtration. The existing technology generally adopts solvent refining, that is, chlorine salt treatment, and the main component of the refining agent is NH 4 Cl or ZnCl 2 Add a small amount of carbonate or nitrate, use chlorine salt to vaporize and precipitate a large number of microbubbles at the melting temperature of zinc alloy, and promote the gas and inclusions in the alloy to adhere to the bubbles and float up to achieve the purpose of removal. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/02C22B9/05C22B19/32
CPCY02P10/20
Inventor 王薇薇戴斌煜商景利
Owner NANCHANG HANGKONG UNIVERSITY
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