A method for preparing zinc-based alloys from zinc-containing waste materials
A technology for scrap and alloy, applied in the field of zinc-based alloy preparation from zinc-containing scrap, can solve the problems of low product purity, inability to meet production requirements, poor quality, etc.
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Examples
Embodiment 1
[0073] (1) The zinc-containing waste is mixed with water and then pelletized to obtain raw material wet pellets.
[0074]Zinc-containing waste includes zinc ash and gas mud with a mass ratio of 1.5:1, and the zinc content is 35%; after the zinc-containing waste is mixed with water, a wet material with a water content of 20% is obtained; the wet material is transported through the conveyor belt to the mixing ball Feeding machine, through the rotation of the drum, the mixture is made into a spherical shape; the ball forming rate is 94.8%, and the ball forming speed is 0.94mm·min - 1 , the ball size is 12mm, the ball making time is 23 minutes, the wet bulb compressive strength is 1417N / piece, and the burst temperature is 210℃.
[0075] (2) calcining raw material wet balls to obtain raw material dry balls.
[0076] The raw material wet ball was dried at 250°C for 30min, and then roasted at 1100°C for 60min to obtain the raw material dry ball; The dry ball compressive strength i...
Embodiment 2
[0109] The same method as in Example 1 is adopted, except that the zinc content in the zinc-containing waste in step (1) is 50%, and the moisture content of the raw material wet bulb is 25%; ; The reduction temperature in step (3) is 1100°C.
[0110] For the ZnAl prepared in this example 4 Cu 3 The composition of the alloy was tested, and the results were as follows:
[0111] element
Al
Cu
Mg
Zn
Fe
Pb
Cd
Sn
content / %
4.3
1.1
0.06
margin
0.035
0.004
0.003
0.0015
[0112] The experimental results show that the ZnAl prepared in this example 4 Cu 3 The alloy composition is uniform and conforms to the standard of "Zinc Alloy Ingots for Casting" (GB / T8738-2006).
[0113] The tensile strength of the prepared alloy is 350MPa, the elongation is 4%, and the impact toughness is 100J.
Embodiment 3
[0115] The same method as in Example 1 is adopted, except that the zinc content in the zinc-containing waste in step (1) is 40%, and the moisture content of the raw material wet bulb is 23%; ; The reduction temperature in step (3) is 1200°C.
[0116] For the ZnAl prepared in this example 4 Cu 3 The composition of the alloy was tested, and the results were as follows:
[0117] element
Al
Cu
Mg
Zn
Fe
Pb
Cd
Sn
content / %
4.1
1.0
0.04
margin
0.035
0.004
0.003
0.0015
[0118] The experimental results show that the ZnAl prepared in this example 4 Cu 3 The alloy composition is uniform and conforms to the standard of "Zinc Alloy Ingots for Casting" (GB / T8738-2006).
[0119] The tensile strength of the prepared alloy is 348MPa, the elongation is 3.8%, and the impact toughness is 97J.
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Abstract
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