CN102011006B - Method for performing vacuum separation and purification on coating-containing zinc alloy - Google Patents
Method for performing vacuum separation and purification on coating-containing zinc alloy Download PDFInfo
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- CN102011006B CN102011006B CN2010105481090A CN201010548109A CN102011006B CN 102011006 B CN102011006 B CN 102011006B CN 2010105481090 A CN2010105481090 A CN 2010105481090A CN 201010548109 A CN201010548109 A CN 201010548109A CN 102011006 B CN102011006 B CN 102011006B
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Abstract
The invention relates to a method for performing vacuum separation and purification on coating-containing zinc alloy. In the method, blocky zinc alloy waste serves as a raw material and the raw material comprises 90 to 98 percent of zinc, 2 to 5 percent of aluminium and 3 to 5 percent of coated metal comprising copper, nickel and chromium; distillation temperature is controlled to be between 550 and 700 DEG C; vacuum degree is 5 to 100 Pa; the distillation processing time is 8 to 14 hours; zinc can be removed from the zinc alloy waste through vacuum distillation, so that high-purity zinc is obtained; and pure copper and pure nickel can be separated from the separated metal residues by a wet method. The method is used for performing vacuum separation and purification on the coating-containing zinc alloy waste to recover the high-purity zinc and obtain residues rich in metals such as copper, nickel and the like, and pure copper and pure nickel can be separated from the metal residues by the wet method, so working temperature is greatly reduced by the process, the economical benefit is obvious, and the method has the advantages of environment friendliness, low labor intensity, small occupied area of equipment, short process flow and the like.
Description
Technical field
The present invention relates to metal recovery purification field, particularly a kind of zinc alloy waste material vacuum separation purification techniques with coating.
Background technology
Zinc alloy has higher intensity and hardness, good wear-resisting subtracting wiped performance, starting material and advantage and some other particular performances such as cheap for manufacturing cost, has tangible economic benefit with its instead of copper alloy, and is extensive in sector applications such as bathroom hot-water heatings.Such alloy substrate composition is an aluminium zinc, surface electrical copper facing, nickel and chromium metal.
At present such zinc alloy waste material isolating traditional technology of purifying mainly contains muffle oven process, atmospheric distillation.Known traditional technology is put forward the zinc technology, long flow path, and processing temperature is high, and energy consumption is high, and metal recovery rate is low, and labour intensity is big and environmental pollution is serious.
Summary of the invention
The objective of the invention is to overcome the above deficiency of background technology, a kind of method for purifying and separating of bathroom hot-water heating industry zinc alloy waste material is provided.
Technical scheme of the present invention is following:
A kind of zinc alloy vacuum separation method of purification with coating may further comprise the steps:
1, will drop into vacuum distillation furnace with the zinc alloy waste material of coating, cover sealing cover;
2, start vacuum system and bleed, the interior vacuum tightness of stove is reached below the 100Pa.Open heater power source, be heated to 550～700 ℃, holding temperature 8～14 hours;
3, keep vacuum tightness at 5～100Pa, close vacuum pump when cooling is cooled to 290～310 ℃, close the water coolant that is fed in the condensation water jacket when temperature is reduced to 240～260 ℃ of left and right sides, open the sealing cover of retort, take out residue; Open the condensing surface discharge port, take out solid zinc;
4, the residue that is rich in copper, nickel and chromium metal is carried out wet separation, obtain pure copper and mickel.
What the present invention was directed against is bathroom hot-water heating industry zinc alloy waste material, and the zinc alloy waste material composition of described band coating is generally: zinc 90%～98%, aluminium 2%～5%, copper, nickel, chromium total content 3%～5% in the coated metal.
The present invention realizes that the ultimate principle that vacuum separation is purified is under vacuum condition, and ratios such as the steam of zinc and aluminium, copper, nickel, chromium are bigger, and outer other impurity elements that dezincify during 550～700 ℃ of vacuum distillings are non-volatile, separates with matrix thereby zinc forms gas.Because do not have oxidizing atmosphere in the vacuum, oxidation does not all take place in evaporable zinc and nonvolatile residue element, still is simple substance.Evaporable zinc obtains solid zinc through after the condensation.
Compare with traditional technology, this method has following obvious advantage:
1, flow process is short, and equipment is simple, and floor space is little;
2, vacuum separation purification techniques can reduce processing temperature greatly and reach 600～700 ℃, and energy consumption is lower.
3, the purity of zinc ingot that obtains of vacuum distilling is very high, and foreign matter contents such as aluminium, copper are lower than 0.01%.
4, the vacuum distilling operation process is pollution-free, safety, reliable.
5, the residue that is rich in copper nickel metal is carried out wet separation and also can obtain pure copper and mickel.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
The vacuum distillation furnace structure diagram that Fig. 2 adopts for the present invention.
Among the figure: 1-bell 2-body of heater 3-thermoscreen 4-graphite charging tray
5-graphite heater 6-vapour condensation pipe 7-stock pan
Embodiment
Main technique flow process of the present invention is as shown in Figure 1, and the vacuum distillation furnace of employing is as shown in Figure 2.Below in conjunction with concrete technical process, specific embodiment of the present invention is done further detailed description.
Embodiment one
1, get raw material 0.5t, contain aluminium 2.2%, coated metal copper, nickel, chromium total content 3.1%, the zinc surplus adds in the plumbago crucible with solid form, with the crucible vacuum oven of packing into, covers sealing cover again.
2, start vacuum system and bleed, make the interior vacuum tightness of stove reach 100Pa.Open the heater power source heat temperature raising, through the intensification of about 3h, temperature reaches 600 ℃, holding temperature 8～10 hours.
3, keep vacuum tightness at 50～100Pa, close vacuum pump when cooling is cooled to 300 ℃, close the water coolant that is fed in the condensation water jacket when temperature is reduced to 250 ℃ of left and right sides, open the sealing cover of retort, take out residue.Open the condensing surface discharge port, take out solid zinc, accomplish a smelting process.
4, produce zinc 427.3kg, produce slag 72.5kg, the about 1200 degree/stoves of power consumption.
Embodiment two
1, get raw material 0.5t, contain aluminium 3.5%, coated metal copper, nickel, chromium total content 4.1%, the zinc surplus adds in the plumbago crucible with solid form, with the crucible vacuum oven of packing into, covers sealing cover again.
2, start vacuum system and bleed, make the interior vacuum tightness of stove reach 50Pa.Open the heater power source heat temperature raising, through the intensification of about 3.3h, temperature reaches 650 ℃, holding temperature 10～12 hours.
3, keep vacuum tightness at 20～50Pa, close vacuum pump when cooling is cooled to 300 ℃, close the water coolant that is fed in the condensation water jacket when temperature is reduced to 250 ℃ of left and right sides, open the sealing cover of retort, take out residue.Open the condensing surface discharge port, take out solid zinc, accomplish a smelting process.
4, produce zinc 418.5kg, produce slag 81.3kg, the about 1400 degree/stoves of power consumption.
Embodiment three
1, get raw material 0.5t, contain aluminium 4.9%, coated metal total contents 4.95% such as copper, nickel, chromium, the zinc surplus adds in the plumbago crucible with solid form, with the crucible vacuum oven of packing into, covers sealing cover again.
2, start vacuum system and bleed, make the interior vacuum tightness of stove reach 20Pa.Open the heater power source heat temperature raising, through the intensification of about 3.8h, temperature reaches 700 ℃, holding temperature 12～14 hours.
3, keep vacuum tightness at 5～20Pa, close vacuum pump when cooling is cooled to 300 ℃, close the water coolant that is fed in the condensation water jacket when temperature is reduced to 250 ℃ of left and right sides, open the sealing cover of retort, take out residue.Open the condensing surface discharge port, take out solid zinc, accomplish a smelting process.
4, produce zinc 407.5kg, produce slag 92.3kg, the about 1600 degree/stoves of power consumption.
Can find out that the direct yield that vacuum distillation method is carried zinc can reach 90%, in addition, metallic residue carried out wet separation can obtain pure copper and mickel, so remarkable in economical benefits, reached effective utilization of waste material.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements according to this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (1)
1. zinc alloy waste material vacuum separation method of purification with coating may further comprise the steps:
(1), will cover sealing cover with the zinc alloy waste material input vacuum distillation furnace of coating;
(2), start vacuum system and bleed, make that vacuum tightness reaches below the 100Pa in the stove; Open heater power source, waste material heating in the distillation charging tray makes zinc form zinc fume, and in condensing surface condensing and recycling, wherein distill charging tray and be heated to 550～700 ℃, holding temperature 8～14 hours; Cavity temperature is 250～300 ℃ in the condensing surface;
(3), keep vacuum tightness at 5～100Pa, cooling is closed vacuum pump when being cooled to 290～310 ℃, closes the water coolant that is fed in the condensation water jacket when temperature is reduced to 240～260 ℃, opens the sealing cover of retort, takes out residue; Open the condensing surface discharge port, take out solid zinc;
(4), the residue that is rich in copper, nickel and chromium metal is carried out wet separation, obtain pure copper and mickel,
Wherein, the zinc alloy waste material composition of described band coating is: zinc 90%～98%, and aluminium 2%～5%, copper, nickel, chromium total content 3%～5% in the coated metal, the content of each composition of waste material adds up to 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105481090A CN102011006B (en) | 2010-11-17 | 2010-11-17 | Method for performing vacuum separation and purification on coating-containing zinc alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105481090A CN102011006B (en) | 2010-11-17 | 2010-11-17 | Method for performing vacuum separation and purification on coating-containing zinc alloy |
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| Publication Number | Publication Date |
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| CN102011006A CN102011006A (en) | 2011-04-13 |
| CN102011006B true CN102011006B (en) | 2012-08-22 |
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| CN2010105481090A Expired - Fee Related CN102011006B (en) | 2010-11-17 | 2010-11-17 | Method for performing vacuum separation and purification on coating-containing zinc alloy |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017992B (en) * | 2014-05-22 | 2016-03-02 | 邱政 | A kind of zinc base alloy nickel plated copper melts the Slag recovering novel process after zinc |
| CN109536715A (en) * | 2018-12-01 | 2019-03-29 | 贵州省冶金化工研究所 | A kind of zinc lixiviating solution Cobalt Purification method |
| CN109338117A (en) * | 2018-12-05 | 2019-02-15 | 攀枝花钢城集团有限公司 | Utilize the process and its production system of hot galvanizing residue production kirsite |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162649A (en) * | 1997-02-28 | 1997-10-22 | 昆明理工大学 | Method for enriching noble metals and extracting zinc by vacuum vaporization |
| CN101565779A (en) * | 2009-05-18 | 2009-10-28 | 葫芦岛锌业股份有限公司 | Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162649A (en) * | 1997-02-28 | 1997-10-22 | 昆明理工大学 | Method for enriching noble metals and extracting zinc by vacuum vaporization |
| CN101565779A (en) * | 2009-05-18 | 2009-10-28 | 葫芦岛锌业股份有限公司 | Method for producing zinc powder and reclaiming scattered metals indium and germanium by distilling aluminum hard zinc in vacuum |
Non-Patent Citations (1)
| Title |
|---|
| 王优等.高纯锌制备技术.《矿冶》.2008,第17卷(第4期),40-46. * |
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