CN105728740B - A kind of method for distilling zinc powder - Google Patents
A kind of method for distilling zinc powder Download PDFInfo
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- CN105728740B CN105728740B CN201410739322.8A CN201410739322A CN105728740B CN 105728740 B CN105728740 B CN 105728740B CN 201410739322 A CN201410739322 A CN 201410739322A CN 105728740 B CN105728740 B CN 105728740B
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- retort
- zinc
- zinc powder
- condenser
- distillation
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Abstract
The present invention discloses a kind of method for distilling zinc powder, wherein, including step：A, electrolysis zinc ingot metal is added in retort by retort zincification mouth, melts zinc ingot metal；B, metallic zinc of the retort temperature control after 907 ~ 1000 DEG C, fusing is vaporized into distillation in retort；C, the metal zinc fume after vaporizing is entered in condenser by airway tube to be cooled down, and obtains zinc powder.Present invention process flow is short, and production operation is simple, and manufacturing cost is low；Production process meets environmental requirement without waste water, waste gas；Product granularity is thin, meets purification production requirement.
Description
Technical field
The present invention relates to colored metallurgical industrial field, more particularly to a kind of method for distilling zinc powder.
Background technology
Electrolytic zinc production needs a large amount of zinc powders for purification and impurity removal and the synthetical recovery of valuable metal.And the zinc powder requires palpus
To distill zinc powder.Distillation zinc powder relatively has following features with electric furnace zinc powder, blowing zinc powder：Purity is high（Its purity is in 99.998-
99.9998%）, zinc powder particle diameter is thin and controllable（Product cut size can be controlled to be mainly distributed on less than 10 microns）, be high activity also
Former zinc powder, zinc powder surface do not have oxide-film, effective zinc more than 98.5%.This distillation zinc powder be widely used in chemical industry, zinc-rich paint,
Hydrometallurgy.
Production practices show that purification is preferable using high-purity superfine metal zinc impurity-eliminating effect, can meet wanting for deep purifying
Ask, obtain the preferably new liquid of quality, there is the stabilization using production system.But high-quality zinc powder price in the market is higher, and
Quality is unstable, and the steady taeniae telarum to production carrys out no small pressure.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of method for distilling zinc powder, it is intended to solves
The problem of certainly existing zinc powder quality is unstable, cost is high.
Technical scheme is as follows：
A kind of method for distilling zinc powder, wherein, including step：
A, electrolysis zinc ingot metal is added in retort by retort zincification mouth, melts zinc ingot metal；
B, metallic zinc of the retort temperature control after 907 ~ 1000 DEG C, fusing is vaporized into distillation in retort；
C, the metal zinc fume after vaporizing is entered in condenser by airway tube to be cooled down, and obtains zinc powder.
The method of described distillation zinc powder, wherein, the granularity of obtained zinc powder is the mesh of -200 mesh ~ -1200.
The method of described distillation zinc powder, wherein, in the step A, retort power steps up from 10kW, per half
Hour improves 20kW, when improving to 90kW, seals air guide lid mouth, the air bleeding valve of zinc powder discharge bucket is opened, then to condenser
Middle supplement nitrogen, turns off air bleeding valve, carries power to 120kW after half an hour.
The method of described distillation zinc powder, wherein, in the step B, when distillation starts, intermittence is opened air bleeding valve and carried out
Pressure release, when the temperature stabilization of condenser is at 70 ~ 75 DEG C, power is increase gradually to 200kW ~ 225kW.
The method of described distillation zinc powder, wherein, the retort is Medium frequency induction electric crucible formula retort.
The method of described distillation zinc powder, wherein, the retort is using clay graphite as evaporator.
Beneficial effect：Present invention process flow is short, and production operation is simple；For production process without waste water, waste gas, meeting environmental protection will
Ask；Product granularity is thin, meets purification production requirement.
Embodiment
The present invention provide it is a kind of distill zinc powder method, for make the purpose of the present invention, technical scheme and effect it is clearer,
Clearly, the present invention is described in more detail below.It should be appreciated that specific embodiment described herein is only explaining this
Invention, is not intended to limit the present invention.
A kind of method preferred embodiment for distilling zinc powder provided by the present invention, it includes step：
S1, will electrolysis zinc ingot metal be added to by retort zincification mouth in retort, melt zinc ingot metal；
S2, by retort temperature control at 907 ~ 1000 DEG C, the metallic zinc after fusing vaporizes distillation in retort；
Metal zinc fume after S3, vaporization is entered in condenser by airway tube to be cooled down, and obtains zinc powder.
The granularity of the zinc powder obtained in step s3 is the mesh of -200 mesh ~ -1200.
In step sl, i.e., retort temperature rise period, retort power progressively heat up from 10kW, are improved per half an hour
20kW；When reaching 90kW, air guide lid mouth is first sealed, opens the air bleeding valve of zinc powder discharge bucket, while is supplemented into condenser
Nitrogen, air bleeding valve being then shut off, power mentions 120kW after half an hour, i.e. DC voltage is 400V, DC current 300A, with
Just retort carries out zinc liquid evaporation.
In step s 2, when retort power brings up to 120kW, taking around the time of two hours could realize in stove
The evaporation of zinc liquid.When evaporation starts, the temperature of condenser can from room temperature 20 DEG C or so be stepped up, condenser temperature is shown as 30
DEG C when, open blower fan, adjustment blower fan frequency be 30Hz, while discontinuity opens air bleeding valve progress pressure release.When condenser shows temperature
Degree is stable at 70 DEG C -75 DEG C, shows that retort evaporation is normal.Inspection now is carried out to operating platform, after confirming that charging is normal,
Power can be stepped up to 200kW（DC voltage 500V, DC current 400A, blower fan frequency 35Hz）-225kW（Direct current
Press 500V, DC current 400A, blower fan frequency 38Hz）Normally produced.
Zinc 907 DEG C of its boiling temperature under 760mm mercury column atmospheric pressure, retort of the invention select Medium frequency induction electric heating
Crucible type retort.Retort is evaporator with clay graphite, and clay graphite has a preferable magnetic conductivity, hot thermal contact, well
Pliability, resistance to rapid heat cycle, great advantage are to use clay-graphite crucible not occur to leak zinc phenomenon, electric furnace for evaporator stove
Work does not almost have failure, and realizing zinc fractionating can stop that technology can be opened, and electric induction furnace realizes that zero energy starts, and evaporation capacity can root
The stepless changing between 3-4 tons is needed according to user.
The internal coil diameter 1040mm of Medium frequency induction electric crucible formula retort, crucible external diameter 900mm, height 1020mm.Steam
Furnace outer layer insulation uses ￠ 2200mm × 1500mm × 20mm fiberglass, and non-type fire proofed wood is used between coil and fiberglass
Material 725# alumina cement pouring materials pour, and are filled between coil and crucible with mullite powder.Retort bottom using it is non-magnetic not
Rust steel is welded, and is built up with non-type refractory material 725# alumina cement pouring materials.Retort bottom overall dimensions are：
2200mm×2200mm×1000mm。
The retort selects closed liquid cooling system, 5 DEG C of its circulating cooling water temperature difference.
The airway tube uses carborundum tube, i.e., is coupled by carborundum tube with condenser, carborundum specification：External diameter ￠
200mm, internal diameter ￠ 140mm.This airway tube requires that zinc fume air velocity is relatively high.Zinc fume steam guiding tube uses 8kW crawler belts
The heating of formula electric boiling plate also uses Insulation simultaneously, makes its temperature more than 950 DEG C.
In step s3, the condensation of zinc powder is distilled, is that unsaturated zinc fume is introduced into condenser.Design of condenser is joined
Number：50-250 DEG C of condenser internal temperature, condenser inside dead size：Long 3600mm × high 2000mm × wide 1100mm.Condensation
Device inner surface uses corrugated plating to increase condenser heat exchange area, 55 square metres of its heat exchange area.The air guide of zinc fume entrance
Pipe uses auxiliary electrical heater, and zinc fume enters 17.5 degree of oral airway axis angle horizontal with condenser.Pressure is set inside condenser
Sensor, quick-fried valve is unloaded equipped with magnetic valve（PLC is controlled）, condenser overhead separately unloads quick-fried valve equipped with one.With leading for zinc fume entrance
Air pipe interface uses nitrogen sealing gland technology, and condenser is equipped with track and wheel, and movement condenser easily docks during docking.
Condenser is equipped with five thermocouples, respectively to water inlet water temperature, delivery port water temperature, condenser front-end temperature, condensation
Device back segment temperature, zinc powder temperature carry out thermometric.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (4)
- A kind of 1. method for distilling zinc powder, it is characterised in that including step：A, electrolysis zinc ingot metal is added in retort by retort zincification mouth, melts zinc ingot metal；B, metallic zinc of the retort temperature control after 907 ~ 1000 DEG C, fusing is vaporized into distillation in retort；C, the metal zinc fume after vaporizing is entered in condenser by airway tube to be cooled down, and obtains zinc powder；In the step A, retort power is stepped up from 10kW, and 20kW is improved per half an hour, when improving to 90kW, Air guide lid mouth is sealed, the air bleeding valve of zinc powder discharge bucket is opened, nitrogen is then supplemented into condenser, turns off air bleeding valve, half Power is carried to 120kW after hour；In the step B, when distillation starts, the temperature of condenser is stepped up, and when being shown as 30 DEG C, opens blower fan, adjustment Blower fan frequency is 30Hz, and intermittence opens air bleeding valve and carries out pressure release, when the temperature stabilization of condenser is at 70 ~ 75 DEG C, by power It is increase gradually to 200kW ~ 225kW.
- 2. the method for distillation zinc powder according to claim 1, it is characterised in that the granularity of obtained zinc powder is -200 mesh ~ -1200 mesh.
- 3. the method for distillation zinc powder according to claim 1, it is characterised in that the retort is Medium frequency induction electric heating earthenware Crucible formula retort.
- 4. the method for distillation zinc powder according to claim 3, it is characterised in that the retort uses clay graphite conduct Evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739322.8A CN105728740B (en) | 2014-12-08 | 2014-12-08 | A kind of method for distilling zinc powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739322.8A CN105728740B (en) | 2014-12-08 | 2014-12-08 | A kind of method for distilling zinc powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105728740A CN105728740A (en) | 2016-07-06 |
| CN105728740B true CN105728740B (en) | 2018-01-23 |
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Citations (8)
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|---|---|---|---|---|
| CN1431074A (en) * | 2003-01-24 | 2003-07-23 | 翟国华 | Method for producing zinc powder and its mfg. device |
| 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 |
| CN101618458A (en) * | 2009-07-17 | 2010-01-06 | 江苏科创金属新材料有限公司 | Preparation method of sub-micron zinc powder and preparation device thereof |
| CN201609764U (en) * | 2009-10-30 | 2010-10-20 | 赵志强 | Induction type electric heating tower type zinc powder furnace |
| CN102039420A (en) * | 2010-11-02 | 2011-05-04 | 广东工业大学 | Method for preparing superfine zinc powder from hot galvanizing zinc slag wastes through vacuum evaporation and rapid condensation |
| CN202129446U (en) * | 2011-06-21 | 2012-02-01 | 扬州双盛锌业有限公司 | Zinc powder preparation device |
| CN103817339A (en) * | 2014-01-28 | 2014-05-28 | 赵志强 | Nanoscale high-purity zinc powder production process based on distillation method |
| CN103862057A (en) * | 2014-02-27 | 2014-06-18 | 赵志强 | Device for producing nano-scale high-purity zinc powder by distillation method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5212622A (en) * | 1975-07-21 | 1977-01-31 | Toho Aen Kk | Process and equipment for producing zincdust |
| JPS5460261A (en) * | 1977-10-21 | 1979-05-15 | Nippon Mining Co Ltd | Metal powder production |
-
2014
- 2014-12-08 CN CN201410739322.8A patent/CN105728740B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1431074A (en) * | 2003-01-24 | 2003-07-23 | 翟国华 | Method for producing zinc powder and its mfg. device |
| 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 |
| CN101618458A (en) * | 2009-07-17 | 2010-01-06 | 江苏科创金属新材料有限公司 | Preparation method of sub-micron zinc powder and preparation device thereof |
| CN201609764U (en) * | 2009-10-30 | 2010-10-20 | 赵志强 | Induction type electric heating tower type zinc powder furnace |
| CN102039420A (en) * | 2010-11-02 | 2011-05-04 | 广东工业大学 | Method for preparing superfine zinc powder from hot galvanizing zinc slag wastes through vacuum evaporation and rapid condensation |
| CN202129446U (en) * | 2011-06-21 | 2012-02-01 | 扬州双盛锌业有限公司 | Zinc powder preparation device |
| CN103817339A (en) * | 2014-01-28 | 2014-05-28 | 赵志强 | Nanoscale high-purity zinc powder production process based on distillation method |
| CN103862057A (en) * | 2014-02-27 | 2014-06-18 | 赵志强 | Device for producing nano-scale high-purity zinc powder by distillation method |
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| Publication number | Publication date |
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| CN105728740A (en) | 2016-07-06 |
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