CN102443708A - Device and method for extracting zinc powder from zinc casting floating slag - Google Patents
Device and method for extracting zinc powder from zinc casting floating slag Download PDFInfo
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- CN102443708A CN102443708A CN201110404754XA CN201110404754A CN102443708A CN 102443708 A CN102443708 A CN 102443708A CN 201110404754X A CN201110404754X A CN 201110404754XA CN 201110404754 A CN201110404754 A CN 201110404754A CN 102443708 A CN102443708 A CN 102443708A
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Abstract
The invention provides a device and a method for extracting zinc powder from zinc casting floating slag. The device is structurally formed in the way that a feed opening is arranged at one side of a vibration grinding conveying groove; a screening machine is arranged at the opposite side of the vibration grinding conveying groove; a dust absorbing hopper and a dust absorbing tube are arranged at the upper part of the vibration grinding conveying groove; and the dust absorbing tube is connected with a dust collector. By using the operation of the device, the zinc casting floating slag is vibrated, ground and screened and then is subjected to dust collection to obtain metallic zinc, zinc powder and zinc dust which are capable of passing through sieves with 40 meshes and 60 meshes, and the metallic zinc, the zinc powder and the zinc dust are respectively recycled. According to the method disclosed by the invention, the zinc powder can be extracted from zinc casting floating slag raw materials, thus the integrated utilization of zinc-smelting raw materials and the recovery of the metallic zinc with low cost are realized; and waste of resources, energy consumption and pollution to the environment are reduced. The device and the method are suitable for the integrated utilization of the zinc casting floating slag in the field of zinc smelting.
Description
Technical field
The invention belongs to the nonferrous metallurgy byproduct comprehensive and utilize the method for technical field, specifically a kind of device and method that from the casting zinc dross, extracts zinc powder.
Background technology
Zinc casting is made the zinc dross that produces in the process and is contained zinc 75～85%, wherein be metallic zinc more than 50%, rest part is zinc oxide and zinc chloride, because wherein contain 0.5～3% cl ions, can't directly return the zinc metallurgy system.Each producer's treatment process is not quite similar, and benefit is all not obvious, if directly sell part metals zinc as product, will create huge economic benefit to country and enterprise.
Certain patent of invention " from zinc dross, extracting the method for zinc " provides a kind of method of from zinc dross, extracting zinc with ore mill, grading machine, vibratory screening apparatus, shaking table and smelting furnace.The zinc dross that this method will contain Zn75～85% through levigate, classification, sieve, sort, founding, output metal zinc ingot or zinc powder, quality oxide zinc.The secondary scum silica frost of output and shaking table intermediates return ore mill to be continued to handle, and further reclaims metallic zinc and zinc oxide, and the total yield of zinc is greater than 98%.
Some enterprise adopts zinc dross ore-smelting furnace to produce zinc powder as main raw material, consumes coke, electricity etc., and the zinc powder that produces can satisfy zinc hydrometallurgy to be used; Or mix briquetting in the oxidized ore to zinc dross as intermediate material, and use distilling furnace zinc metallurgy, cost is than higher; Or add zinc dross in the TD stove to, the direct production crude zinc, the energy consumption and the recovery are lower, and the crude zinc value ratio is lower, and the recrement that produces also needs to handle.
Summary of the invention
In order to overcome the shortcoming that existing casting zinc dross extracts the zinc method, the invention provides a kind of device and method that from the casting zinc dross, extracts zinc powder.This device is made up of vibrating trough and sieve apparatus and particle collector; Zinc dross just sieves this method through casting, the vibrating trough fragmentation is carried; Rescreen zinc powder and zinc oxide and muriate that branch obtains different meshes, solve the technical problem of directly from the casting zinc dross, extracting zinc powder and zinc by product through continuous process.
The scheme that technical solution problem of the present invention is adopted is:
Device constitutes: be provided with opening for feed in vibrating trough one side, a relative side is equipped with the double deck screen extension set, and the vibrating trough bottom is provided with support; Between support top and vibrating trough outer wall, be provided with vibrating spring; On vibrating trough top vibrator is installed, on vibrating trough is installed suitable for reading beyond the vibrator, a plurality of gas skirts is installed, a plurality of gas skirts are communicated with sweep-up pipe; Sweep-up pipe one side is communicated with fans entrance; And be communicated with particle collector, be provided with dust-exhausting port in the particle collector bottom, be provided with air discharge ports on particle collector top.
Vibrating trough is provided with one or two.
Sieve apparatus adopts and revolves shake sieve or linear vibrating screen.The vibration frequency 600 ~ 1500 r/min of vibrating trough, vibration intensity 10 ~ 50kN.
Working method: obtain metallic zinc and zinc fume through the vibration autogenous grinding of vibrating trough and the gradation sizing of sieve apparatus, wherein divide thing to return the direct zinc metallurgy of smelting furnace greater than 40 mesh sieves; Less than 40 orders, divide thing directly as the zinc powder product greater than 60 mesh sieves; Continue processing and utilization less than the dust of collecting in the thin zinc powder of 60 purposes, zinc oxide and zinc chloride and the particle collector.
Positively effect adopts apparatus of the present invention and method from cast zinc scum silica frost raw material, to extract zinc powder, realizes the comprehensive utilization of zinc metallurgy raw material, has realized the recovery of metallic zinc cheaply, reduces waste, energy consumption and the environmental pollution of resource.The comprehensive utilization of suitable zinc metallurgy field casting zinc dross.
Description of drawings
Fig. 1 is apparatus of the present invention structure pie graph
Fig. 2 is a process flow chart of the present invention
Among the figure, 1. vibrating trough, 1.1. opening for feed, 1.2. vibrating spring, 1.3. support, 1.4. vibrator, 2. sweep-up pipe, 2.1. gas skirt, 3. double deck screen extension set, 4. blower fan, 5. particle collector, 5.1. dust-exhausting port, 5.2. air discharge ports.
Embodiment
Device constitutes: according to shown in Figure 1, be provided with opening for feed 1.1 in vibrating trough 1 one sides, a relative side is equipped with double deck screen extension set 3; The vibrating trough bottom is provided with support 1.3, between support top and vibrating trough outer wall, is provided with vibrating spring 1.2, on vibrating trough top vibrator 1.4 is installed; On vibrating trough is installed suitable for reading beyond the vibrator, a plurality of gas skirts 2.1 are installed, a plurality of gas skirts are communicated with sweep-up pipe 2, and sweep-up pipe one side enters the mouth with blower fan 4 and is communicated with; Blower fan 4 outlets are communicated with particle collector 5; Be provided with dust-exhausting port 5.1 in the particle collector bottom, be provided with air discharge ports 5.2, and be connected with chimney on particle collector top.
Vibrating trough is provided with one or two, and when two vibrating troughs were set, the vibrating trough that has opening for feed one side was higher than the vibrating trough near the sieve apparatus part.Second vibrating trough structure is identical with first vibrating trough.
Sieve apparatus adopts and revolves shake sieve or linear vibrating screen.
Working method:
The Vibration on Start-up device makes the upper and lower vibration of vibrating trough, adds the casting zinc dross through 5 mesh sieve holes continuously through opening for feed then, and the casting zinc dross is under the vibrating trough vibration; Through the phase mutual friction between the casting zinc dross, the realization zinc powder separates with its surface attachment oxide compound, along with the vibration of casting zinc dross; Form casting zinc dross stream, to the motion of opening for feed opposite side, in arriving sieve apparatus; Sieve apparatus is equipped with two-layer screen cloth, and the first layer screen cloth is 40 orders, and second layer screen cloth is 60 orders; Along with the sieve apparatus running, the part of crossing 40 mesh sieves flows out from 60 eye mesh screens, crosses the part of 60 eye mesh screens and directly collects down from 60 eye mesh screens.
The flue dust that in casting zinc dross vibration autogenous grinding process, produces, through in gas skirt and the sweep-up pipe arrival particle collector, wherein the thin dirt that obtains of particle collector is regularly discharged through the bottom dust-exhausting port.
Wherein, when crossing 5 mesh sieves, the casting zinc dross of volume particle size directly returns in the zinc foundry furnace and uses on the sieve.
Divide thing to return the direct zinc metallurgy of smelting furnace greater than 40 mesh sieves;
Less than 40, divide thing directly as the metal zinc product greater than 60 mesh sieves;
Continue processing and utilization less than the zinc fume of collecting in the thin zinc powder of 60 purposes, zinc oxide, zinc chloride and the particle collector.
Vibration autogenous grinding conveying principle:
Metallic particles high-speed motion collision in the casting zinc dross produces friction, grinds oarse-grained zinc mixture, grinds off the oxide compound on zinc simple substance surface, makes it float on the zinc powder surface.
Embodiment 1:
To cast zinc dross and sieve in dust collection cover with 5 eye mesh screens earlier, screen overflow returns smelting furnace, and screen underflow directly gets into the opening for feed of vibrating trough; With the feeding quantity that flashboard control gets into two vibrating troughs, vibrating trough vibration frequency 980r/min, two each 0.75kW of vibrating motor; The power of shaking 10KN/ platform, aggregate erection, spring abutment; Vibrating trough 6000 * 300 * 500mm, the dark 450mm of feed cell body wherein, the bed of material 150 mm; 0.5～1 ton/hour of hopper feed rate control; Second vibrating trough outlet meets Φ and revolves the sieve that shakes for 1.5 meters, uses 4 kW frequency control motors; Revolve in the sieve that shakes and establish two-layer screen cloth, the upper strata is 40 orders, and lower floor is 60 orders.
At the charging opening place, two vibrating trough junctions, vibrating troughs and the revolving sieve interface that shakes is provided with gas skirt.
Gather dust: filtration area 158m
2, filtration velocity 0.14～0.6m/min filters air quantity 2160～4320 m
3/ h revolves shake each outlet of sieve apparatus and inlet and establishes gas skirt, keeps negative pressure 20～50Pa; All the other are 120～150 Pa everywhere, physical dimension 1090 * 1678 * 3667, cloth bag material terylene Nomex; Adopt pulse dust removal, dedusting blast 0.15 ~ 0.2Mpa, efficient 99.5%.Use centrifugal blower, air quantity 10172m
3/ h, blast 4470pa, power of motor 22kW.
Embodiment 2:
To cast zinc dross and sieve in dust collection cover with 5 eye mesh screens earlier, screen overflow returns smelting furnace, and screen underflow directly gets into the opening for feed of vibrating trough; With the feeding quantity that flashboard control gets into vibrating trough, vibrating trough power of motor 4.5 kW, vibration frequency 960r/min; The power of shaking 50kN/ platform, spring abutment, shaker conveyer 1000 * 350 * 550mm; The dark 450mm of feed cell body wherein, the bed of material 300 mm; 0.2～0.6 ton/hour of hopper feed rate control; The vibrating trough top bright zinc of outlet coarse particles directly returns smelting furnace, and lower part outlet connects linear vibrating screen, and the sieve that shakes is established two-layer screen cloth, and the upper strata is 40 orders, and lower floor is 60 orders.
At the charging opening place, vibrating trough and vibratory screening apparatus interface be provided with gas skirt.
Gather dust: filtration area 72m
2, filtration velocity 0.5～2m/min filters air quantity 4000～5000 m
3/ h, each outlet of sieve apparatus and inlet are established gas skirt, keep negative pressure 120～150 Pa everywhere, and cloth bag material terylene 208 adopts pulse dust removal, vibration efficiency of dust collection 99.5%.
Intermediates and finished product zinc powder:
Return thing greater than the bright zinc of 40 purposes: quantum of output 30～35%, metallic zinc>85%, zinc oxide < 15%;
40～60 purpose finished product zinc powders: quantum of output 10～12%, metallic zinc 88～92%;
Less than 60 purpose zinc grays: quantum of output 65 ~ 70%.
Adopt apparatus and method of the present invention to reclaim metallic zinc, zinc powder and zinc fume, can make full use of zinc raw material in the casting zinc dross, and form zinc product from the casting zinc dross.Operating process is simple, realizes closed circuit production fully, does not have dust pollution.Compare with the unlimited fragmentation of traditional machinery and through separation in streaming current, production efficiency is high, and the zinc product classification is easy, and process velocity is fast, saves manpower and electric power, and production cost is low, and protection environment and health of human body condition are good.
Claims (5)
1. device that from the casting zinc dross, extracts zinc powder is characterized in that:
Device constitutes: be provided with opening for feed (1.1) in vibrating trough (1) one side, a relative side is equipped with double deck screen extension set (3), and the vibrating trough bottom is provided with support (1.3); Between support top and vibrating trough outer wall, be provided with vibrating spring (1.2); Vibrator (1.4) is installed on vibrating trough top, on vibrating trough is installed suitable for reading beyond the vibrator, a plurality of gas skirt buckets (2.1) is installed, a plurality of gas skirts are communicated with sweep-up pipe 2; Sweep-up pipe one side is communicated with blower fan (4) inlet; Blower fan (4) outlet is communicated with particle collector 5, is provided with dust-exhausting port (5.1) in the particle collector bottom, is provided with venting port (5.2) on particle collector top.
2. a kind of device that from the casting zinc dross, extracts zinc powder according to claim 1; It is characterized in that: vibrating trough is provided with one or two; When two vibrating troughs are set; The vibrating trough that has opening for feed one side is higher than the vibrating trough near the sieve apparatus part, and second vibrating trough structure is identical with first vibrating trough.
3. a kind of device that from the casting zinc dross, extracts zinc powder according to claim 1 is characterized in that: the vibration frequency 600 ~ 1500 r/min of vibrating trough, vibration intensity 10 ~ 50kN.
4. a kind of device that from the casting zinc dross, extracts zinc powder according to claim 1, it is characterized in that: sieve apparatus adopts and revolves shake sieve or linear vibrating screen, and vibratory screening apparatus is provided with two-layer screen cloth, and wherein the upper strata screen cloth is 40 orders, and lower screen is 60 orders.
5. method of from the casting zinc dross, extracting zinc powder is characterized in that:
Working method:
The Vibration on Start-up device; To join in the opening for feed through the sieve bottom casting zinc dross that 5 mesh sieve hole sizers divide, make the casting zinc dross under the vibrating trough vibration, carry out autogenous grinding and conveying; When arriving sieve apparatus, the process sifted is told greater than 40 purposes screening thing and is returned the direct zinc metallurgy of smelting furnace; Less than 40 orders, divide thing directly as the metal zinc product greater than 60 mesh sieves; Continue processing and utilization less than the zinc fume of collecting in the thin zinc powder of 60 purposes, zinc oxide and zinc chloride and the particle collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110404754XA CN102443708A (en) | 2011-12-08 | 2011-12-08 | Device and method for extracting zinc powder from zinc casting floating slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110404754XA CN102443708A (en) | 2011-12-08 | 2011-12-08 | Device and method for extracting zinc powder from zinc casting floating slag |
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| CN102443708A true CN102443708A (en) | 2012-05-09 |
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| CN201110404754XA Pending CN102443708A (en) | 2011-12-08 | 2011-12-08 | Device and method for extracting zinc powder from zinc casting floating slag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194619A (en) * | 2013-04-23 | 2013-07-10 | 吴鋆 | Fusion casting method of cathode zinc sheets |
| CN103212716A (en) * | 2013-04-23 | 2013-07-24 | 吴鋆 | Method of preparing metal zinc powder |
| CN103937996A (en) * | 2014-05-13 | 2014-07-23 | 株洲冶炼集团股份有限公司 | Mechanical device for recovering zinc from zinc dross |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058809A (en) * | 1991-08-15 | 1992-02-19 | 昆明冶金研究所 | From zinc dross, extract the method for zinc |
| CN2165937Y (en) * | 1993-08-11 | 1994-05-25 | 中国矿业大学 | Low-noise oscillating screen |
| CN1401801A (en) * | 2002-04-12 | 2003-03-12 | 昆明理工大学 | Preparation of active zinc oxide from zinc dross by ultrasonic-microwave process |
| CN1817518A (en) * | 2006-03-10 | 2006-08-16 | 同济大学 | Production of metal zinc powder from zinc dust and zinc dross |
| CN201040663Y (en) * | 2006-12-31 | 2008-03-26 | 中冶南方工程技术有限公司 | Horizontal vacuum motor vibration feeder |
| CN101633983A (en) * | 2009-08-17 | 2010-01-27 | 蒙自矿冶有限责任公司 | Method for improving recovery rate of zinc casting |
-
2011
- 2011-12-08 CN CN201110404754XA patent/CN102443708A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058809A (en) * | 1991-08-15 | 1992-02-19 | 昆明冶金研究所 | From zinc dross, extract the method for zinc |
| CN2165937Y (en) * | 1993-08-11 | 1994-05-25 | 中国矿业大学 | Low-noise oscillating screen |
| CN1401801A (en) * | 2002-04-12 | 2003-03-12 | 昆明理工大学 | Preparation of active zinc oxide from zinc dross by ultrasonic-microwave process |
| CN1817518A (en) * | 2006-03-10 | 2006-08-16 | 同济大学 | Production of metal zinc powder from zinc dust and zinc dross |
| CN201040663Y (en) * | 2006-12-31 | 2008-03-26 | 中冶南方工程技术有限公司 | Horizontal vacuum motor vibration feeder |
| CN101633983A (en) * | 2009-08-17 | 2010-01-27 | 蒙自矿冶有限责任公司 | Method for improving recovery rate of zinc casting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194619A (en) * | 2013-04-23 | 2013-07-10 | 吴鋆 | Fusion casting method of cathode zinc sheets |
| CN103212716A (en) * | 2013-04-23 | 2013-07-24 | 吴鋆 | Method of preparing metal zinc powder |
| CN103937996A (en) * | 2014-05-13 | 2014-07-23 | 株洲冶炼集团股份有限公司 | Mechanical device for recovering zinc from zinc dross |
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Application publication date: 20120509 |