CN102277503B - Sponge cadmium cake smelting automatic feeding machine - Google Patents

Sponge cadmium cake smelting automatic feeding machine Download PDF

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Publication number
CN102277503B
CN102277503B CN201110224953.2A CN201110224953A CN102277503B CN 102277503 B CN102277503 B CN 102277503B CN 201110224953 A CN201110224953 A CN 201110224953A CN 102277503 B CN102277503 B CN 102277503B
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roller
sprocket wheel
mounting flange
conveying
plate
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Expired - Fee Related
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CN201110224953.2A
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CN102277503A (en
Inventor
吴张永
严波
王晓波
王娟
莫子勇
贾伟亮
温成卓
吴喜
王庆辉
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Abstract

The invention provides a sponge cadmium cake smelting automatic feeding machine and belongs to the technical field of nonferrous metal smelting. The sponge cadmium cake smelting automatic feeding machine consists of a conveying positioning device, a conveying box and a pushing device, wherein the conveying box is mounted on the upper end of the conveying positioning device; and the pushing device is mounted on the left side of the conveying positioning device. The feeding machine is simple in structure, low in manufacturing cost, convenient for use and maintenance and high in automation degree, greatly reduces labor intensity of works, protects the physical and mental health of workers and improves working efficiency.

Description

A kind of sponge cadmium cake smelting automatic feeding machine
Technical field
The present invention relates to a kind of sponge cadmium cake smelting automatic feeding machine, belong to the non-ferrous metal metallurgy equipment technical field.
Background technology
Cadmium is a kind of very important metallic substance, and material etc. is controlled in the reaction that is commonly used to make in rechargeable battery, photoelectric material, atomic reactor, belongs to heavy metal, and Cadmium toxicity is larger, and is serious to harm by the air of cadmium pollution and food.Spongy Cadmium is the work in-process of cadmium removal process output, for the higher cadmium of DNA purity, needs Spongy Cadmium is carried out melting.Original Spongy Cadmium water content is larger, is the sposh shape, makes columned Spongy Cadmium cake after the squeezing dewatering machine press dewatering.Because cadmium output is generally not high, therefore the feed way of traditional Spongy Cadmium cake fusion process is to take manual type that the Spongy Cadmium cake is dropped into as requested to carry out melting in smelting furnace.This feed way, labor strength is large, and production efficiency is low, and poisonous cadmium serious harm workman's physical and mental health.For making Spongy Cadmium cake transportation, reinforced more convenient, must design special hopper, satisfy the piling vanning.In melting, for guaranteeing continuity or the homogeneity of melting, avoid the workman poisoning, reduce labor strength, must realize self-feeding.This patent is a kind of sponge cadmium cake smelting automatic feeding machine that designs for overcoming the above problems.
Summary of the invention
The purpose of this invention is to provide a kind of sponge cadmium cake smelting automatic feeding machine, be used in conjunction with the Spongy Cadmium smelting furnace, with realize feeding in raw material, melting is integrated, improves the production efficiency of Spongy Cadmium melting, avoids workman's cadmium poisoning to occur.
Technical scheme of the present invention is: sponge cadmium cake smelting automatic feeding machine, and by conveying and positioning device, carry hopper and material-pulling device to form, carry hopper to be arranged on the conveying and positioning device upper end, material-pulling device is arranged on a side of conveying and positioning device.
Described conveying and positioning device is made of frame 1, reducing motor 2, sprocket wheel 3, chain 4, bearing spider 5, roller 6, positioning beam 11, positional cylinder 12, linear bearings 13, locating shaft 14, bearing mounting flange 16, oil cylinder mounting flange 17, roller sprocket wheel 20.Frame 1 is fixed on ground, and reducing motor 2 is fixed on frame 1.Sprocket wheel 3 is fixed on the output shaft of reducing motor 2 and by chain 4 and is connected with roller sprocket wheel 20, roller sprocket wheel 20 is connected with roller 6, roller sprocket wheel 20 is fixed on the bearing spider 5 on right side, two bearing spiders 5 are fixed on frame 1 position, both sides, upper end, also are covered with respectively bearing charge 7 and chain wheel cover 21 on bearing spider 5 and roller sprocket wheel 20.Positional cylinder 12 is fixed on oil cylinder mounting flange 17, and oil cylinder mounting flange 17 is arranged on below positioning beam 11.Locating shaft 14 is connected (methods such as available welding, sleeve connection) with the piston rod of positional cylinder 12, linear bearings 13 is fixed on bearing mounting flange 16, and bearing mounting flange 16 is arranged on above positioning beam 11 and oil cylinder mounting flange 17 correspondence positions.Roller support 8 is installed on bearing spider 5, and pedestal fairload 9 is arranged on (by axle and screw thread) on roller support 8.Fixing, the installation of each component can be adopted the ordinary methods such as bolt (screw thread), welding, key.
Described conveying hopper is made of locating slot 15, support pillow 18, riser 25, base plate 27, left plate 28 and right side plate 29.Riser 25 is arranged on (its mode of connection is the mode of connection commonly used such as welding, bolt connection) on base plate 27, and left plate 28 is connected with riser 25, is provided with the geometricdrawing shape pusher mouths such as fan-shaped gate, rectangle, circle on left plate 28.Right side plate 29 is connected with base plate with riser 25 and is connected, and is provided with the pusher mouth on right side plate 29.Locating slot 15 laterally is arranged on base plate 27 bottoms, supports pillow 18 and vertically is arranged on base plate 27 bottom the right and lefts.One or more dividing plates 26 are installed on base plate 27, and dividing plate 26 is connected with right side plate with left plate 28 and is connected, the left side opening of dividing plate 26 is fluted, is placed with backgauge rod 10 in groove.Hanger 24 is housed on riser 25, facilitates the crane handling.
Described material-pulling device by cut somebody's hair 19, hydraulic ram 22, pusher frame 23 consist of.Pusher frame 23 is fixed on ground by wall screw, cuts somebody's hair 19 to be connected with the piston rod of hydraulic ram 22 by piston rod adapter sleeve 32, and the modes such as hydraulic ram 22 use bolts, welding are fixed on pusher frame 23.Cut somebody's hair and consisted of by push pedal 30, gusset 31, piston rod adapter sleeve 32.Gusset 31 connects (by modes such as welding) on push pedal 30 and piston rod adapter sleeve 32, and piston rod adapter sleeve 32 is connected with push pedal 30.
The principle of work of this automatic charging equipment is: workman's hopper of the cadmium cake being packed in Spongy Cadmium cake compacting workshop is transported to the Spongy Cadmium meltshop with crane with hopper.The hopper that crane will be equipped with the Spongy Cadmium cake hangs on the roller 6 of e Foerderanlage inlet end, takes off the backgauge rod 10 in hopper.Reducing motor 2 rotates by the roller 6 that sprocket wheel 3 and chain 4 drive e Foerderanlage, and hopper moves forward under the drive of e Foerderanlage roller 6.When the pusher mouth of carrying hopper was aimed at the charging opening of smelting furnace, reducing motor 2 stopped, and positional cylinder 12 actions drive locating shaft 14 and move upward in linear bearings 13, and locating shaft 14 is located locating slot 15, made and carried hopper to fix.After accurate positioning, pusher oil cylinder 12 action drives to cut somebody's hair 19 will carry the Spongy Cadmium cake in hopper to advance in smelting furnaces, and pusher oil cylinder 12 drives to cut somebody's hair and 19 resets, and the positional cylinder 12 drive locating shafts 14 of locating device reset.Reducing motor 2 work, hopper continues station of reach on e Foerderanlage.When the next pusher mouth of carrying hopper was aimed at the smelting furnace charging opening, reducing motor 2 stopped, and repeats above-mentioned action, until pushed away the Spongy Cadmium cake in the conveying hopper, e Foerderanlage is delivered to exit end with empty charging box, and crane hangs hopper.
The invention has the beneficial effects as follows:
(1) it is higher that this charging machine has automatization, alleviated workman's labour intensity, protected workman's physical and mental health, improved high efficiency;
(2) hopper can overlapping piling, has reduced the stacking space, has increased accessibility and the traffic capacity of transportation;
(3) stackable polylith Spongy Cadmium cake in hopper, reduced the frequent operation of crane;
(4) adopted roller in e Foerderanlage, resistance is little, and motion is flexible, and stationarity is good;
(5) locating device and material-pulling device all adopt hydraulic drive and with the hydro-cylinder of magnet ring detector switch, Stroke Control is convenient, and accurate positioning is convenient to realize that automatization controls;
(6) Spongy Cadmium melting automatic charging equipment is simple in structure, low cost of manufacture, and working service is convenient;
(7) this automatic charging equipment can many combinations, and is reinforced for many smelting furnaces, also can form a strip transmission line, for a plurality of smelting furnace work confessions.
Description of drawings
Fig. 1 is front view of the present invention;
Fig. 2 is vertical view of the present invention;
Fig. 3 is left view of the present invention;
The structural representation of Fig. 4 conveying and positioning device of the present invention;
Fig. 5 the present invention carries the front view of hopper;
Fig. 6 the present invention carries the left view of hopper;
The structural representation of Fig. 7 material-pulling device of the present invention;
Cut somebody's hair 19 structural representation of Fig. 8 the present invention;
in figure, each label is: 1: frame, 2: reducing motor, 3: sprocket wheel, 4: chain, 5: bearing spider, 6: roller, 7: bearing charge, 8: roller support, 9: pedestal fairload, 10: the backgauge rod, 11: positioning beam, 12: positional cylinder, 13: linear bearings, 14: locating shaft, 15: locating slot, 16: the bearing mounting flange, 17: the oil cylinder mounting flange, 18: support pillow, 19: cut somebody's hair, 20: the roller sprocket wheel, 21: the chain wheel cover, 22: hydraulic ram, 23: the pusher frame, 24: hanger, 25: riser, 26: dividing plate, 27: base plate, 28: left plate, 29: right side plate, 30: push pedal, 31: gusset, 32: the piston rod adapter sleeve.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but content of the present invention is not limited to described scope.
Embodiment 1: as shown in Fig. 1-6, sponge cadmium cake smelting automatic feeding machine is comprised of conveying and positioning device, conveying hopper and material-pulling device.Carry hopper to be arranged on the conveying and positioning device upper end, material-pulling device is arranged on a side of conveying and positioning device.
Described conveying and positioning device is made of frame 1, reducing motor 2, sprocket wheel 3, chain 4, bearing spider 5, roller 6, positioning beam 11, positional cylinder 12, linear bearings 13, locating shaft 14, bearing mounting flange 16, oil cylinder mounting flange 17, roller sprocket wheel 20.Frame 1 is fixed on ground by wall screw, and reducing motor 2 is bolted on frame 1.Sprocket wheel 3 is fixed on by key on the output shaft of reducing motor 2 and by chain 4 and is connected with roller sprocket wheel 20, roller sprocket wheel 20 is connected with roller 6 by axle, roller sprocket wheel 20 is fixed on the bearing spider 5 on right side, two bearing spiders 5 are fixed on frame 1 position, both sides, upper end, also are covered with respectively bearing charge 7 and chain wheel cover 21 on bearing spider 5 and roller sprocket wheel 20.Positional cylinder 12 is fixed by bolts on oil cylinder mounting flange 17, and oil cylinder mounting flange 17 is arranged on below positioning beam 11 by bolt.Locating shaft 14 is connected by the piston rod of sleeve with positional cylinder 12, and linear bearings 13 is bolted on bearing mounting flange 16, and bearing mounting flange 16 is arranged on above positioning beam 11 and oil cylinder mounting flange 17 correspondence positions.Roller support 8 is installed on bearing spider 5, and pedestal fairload 9 is arranged on roller support 8 by axle and screw thread.
Described conveying hopper is made of locating slot 15, support pillow 18, riser 25, base plate 27, left plate 28 and right side plate 29.Riser 25 is welded on base plate 27, and left plate 28 is connected with riser 25, is provided with fan-shaped gate pusher mouth on left plate 28.Right side plate 29 is connected with base plate with riser 25 and is connected, and is provided with circular pusher mouth on right side plate 29.Locating slot 15 laterally is arranged on base plate 27 bottoms, supports pillow 18 and vertically is arranged on base plate 27 bottom the right and lefts.Four dividing plates 26 are installed on base plate 27, and dividing plate 26 is connected with right side plate with left plate 28 and is connected, the left side opening of dividing plate 26 is fluted, is placed with backgauge rod 10 in groove.Hanger 24 is housed on riser 25, facilitates the crane handling.
Described material-pulling device by cut somebody's hair 19, hydraulic ram 22, pusher frame 23 consist of.Pusher frame 23 is fixed on ground by wall screw, cuts somebody's hair 19 to be connected with the piston rod of hydraulic ram 22 by piston rod adapter sleeve 32, and hydraulic ram 22 is welded on pusher frame 23.Cut somebody's hair and consisted of by push pedal 30, gusset 31, piston rod adapter sleeve 32.Gusset 31 is welded on push pedal 30 and piston rod adapter sleeve 32, and piston rod adapter sleeve 32 is connected with push pedal 30.
The principle of work of this automatic charging equipment is: workman's hopper of the cadmium cake being packed in Spongy Cadmium cake compacting workshop is transported to the Spongy Cadmium meltshop with crane with hopper.The hopper that crane will be equipped with the Spongy Cadmium cake hangs on the roller 6 of e Foerderanlage inlet end, takes off the backgauge rod 10 in hopper.Reducing motor 2 rotates by the roller 6 that sprocket wheel 3 and chain 4 drive e Foerderanlage, and hopper moves forward under the drive of e Foerderanlage roller 6.When the pusher mouth of carrying hopper was aimed at the charging opening of smelting furnace, reducing motor 2 stopped, and positional cylinder 12 actions drive locating shaft 14 and move upward in linear bearings 13, and locating shaft 14 is located locating slot 15, made and carried hopper to fix.After accurate positioning, pusher oil cylinder 12 action drives to cut somebody's hair 19 will carry the Spongy Cadmium cake in hopper to advance in smelting furnaces, and pusher oil cylinder 12 drives to cut somebody's hair and 19 resets, and the positional cylinder 12 drive locating shafts 14 of locating device reset.Reducing motor 2 work, hopper continues station of reach on e Foerderanlage.When the next pusher mouth of carrying hopper was aimed at the smelting furnace charging opening, reducing motor 2 stopped, and repeats above-mentioned action, until pushed away the Spongy Cadmium cake in the conveying hopper, e Foerderanlage is delivered to exit end with empty charging box, and crane hangs hopper.
Embodiment 2: as shown in Fig. 1-6, sponge cadmium cake smelting automatic feeding machine is comprised of conveying and positioning device, conveying hopper and material-pulling device.Carry hopper to be arranged on the conveying and positioning device upper end, material-pulling device is arranged on a side of conveying and positioning device.
Described conveying and positioning device is made of frame 1, reducing motor 2, sprocket wheel 3, chain 4, bearing spider 5, roller 6, positioning beam 11, positional cylinder 12, linear bearings 13, locating shaft 14, bearing mounting flange 16, oil cylinder mounting flange 17, roller sprocket wheel 20.Frame 1 is fixed on ground by wall screw, and reducing motor 2 is welded on frame 1.Sprocket wheel 3 is fixed on by key on the output shaft of reducing motor 2 and by chain 4 and is connected with roller sprocket wheel 20, roller sprocket wheel 20 is connected with roller 6 by key, roller sprocket wheel 20 is fixed on the bearing spider 5 on right side, two bearing spiders 5 are fixed on frame 1 position, both sides, upper end, also are covered with respectively bearing charge 7 and chain wheel cover 21 on bearing spider 5 and roller sprocket wheel 20.Positional cylinder 12 is fixed by bolts on oil cylinder mounting flange 17, and oil cylinder mounting flange 17 is arranged on below positioning beam 11 by bolt.Locating shaft 14 is connected by the piston rod of screw thread with positional cylinder 12, and linear bearings 13 is bolted on bearing mounting flange 16, and bearing mounting flange 16 is arranged on above positioning beam 11 and oil cylinder mounting flange 17 correspondence positions.Roller support 8 is installed on bearing spider 5, and pedestal fairload 9 is arranged on roller support 8 by axle and screw thread.
Described conveying hopper is made of locating slot 15, support pillow 18, riser 25, base plate 27, left plate 28 and right side plate 29.Riser 25 is arranged on base plate 27 by bolt, and left plate 28 is connected with riser 25, is provided with rectangle pusher mouth on left plate 28.Right side plate 29 is connected with base plate with riser 25 and is connected, and is provided with fan-shaped gate pusher mouth on right side plate 29.Locating slot 15 laterally is arranged on base plate 27 bottoms, supports pillow 18 and vertically is arranged on base plate 27 bottom the right and lefts.Five dividing plates 26 are installed on base plate 27, and dividing plate 26 is connected with right side plate with left plate 28 and is connected, the left side opening of dividing plate 26 is fluted, is placed with backgauge rod 10 in groove.Hanger 24 is housed on riser 25, facilitates the crane handling.
Described material-pulling device by cut somebody's hair 19, hydraulic ram 22, pusher frame 23 consist of.Pusher frame 23 is fixed on ground by wall screw, cuts somebody's hair 19 to be connected with the piston rod of hydraulic ram 22 by piston rod adapter sleeve 32, and hydraulic ram 22 is bolted on pusher frame 23.Cut somebody's hair and consisted of by push pedal 30, gusset 31, piston rod adapter sleeve 32.Gusset 31 is welded on push pedal 30 and piston rod adapter sleeve 32, and piston rod adapter sleeve 32 is connected with push pedal 30.
Embodiment 3: as shown in Fig. 1-6, sponge cadmium cake smelting automatic feeding machine is comprised of conveying and positioning device, conveying hopper and material-pulling device.Carry hopper to be arranged on the conveying and positioning device upper end, material-pulling device is arranged on a side of conveying and positioning device.
Described conveying and positioning device is made of frame 1, reducing motor 2, sprocket wheel 3, chain 4, bearing spider 5, roller 6, positioning beam 11, positional cylinder 12, linear bearings 13, locating shaft 14, bearing mounting flange 16, oil cylinder mounting flange 17, roller sprocket wheel 20.Frame 1 is fixed on ground, and reducing motor 2 is bolted on frame 1.Sprocket wheel 3 is fixed on by key on the output shaft of reducing motor 2 and by chain 4 and is connected with roller sprocket wheel 20, roller sprocket wheel 20 is connected with roller 6 by key, roller sprocket wheel 20 is fixed on the bearing spider 5 on right side, two bearing spiders 5 are fixed on frame 1 position, both sides, upper end, also are covered with respectively bearing charge 7 and chain wheel cover 21 on bearing spider 5 and roller sprocket wheel 20.Positional cylinder 12 is fixed by bolts on oil cylinder mounting flange 17, and oil cylinder mounting flange 17 is arranged on below positioning beam 11 by bolt.Locating shaft 14 is connected by the piston rod of screw thread with positional cylinder 12, and linear bearings 13 is bolted on bearing mounting flange 16, and bearing mounting flange 16 is arranged on above positioning beam 11 and oil cylinder mounting flange 17 correspondence positions.Roller support 8 is installed on bearing spider 5, and pedestal fairload 9 is arranged on roller support 8 by axle and screw thread.
Described conveying hopper is made of locating slot 15, support pillow 18, riser 25, base plate 27, left plate 28 and right side plate 29.Riser 25 is welded on base plate 27, and left plate 28 is connected with riser 25, is provided with circular pusher mouth on left plate 28.Right side plate 29 is connected with base plate with riser 25 and is connected, and is provided with rectangle pusher mouth on right side plate 29.Locating slot 15 laterally is arranged on base plate 27 bottoms, supports pillow 18 and vertically is arranged on base plate 27 bottom the right and lefts.Three dividing plates 26 are installed on base plate 27, and dividing plate 26 is connected with right side plate with left plate 28 and is connected, the left side opening of dividing plate 26 is fluted, is placed with backgauge rod 10 in groove.Hanger 24 is housed on riser 25, facilitates the crane handling.
Described material-pulling device by cut somebody's hair 19, hydraulic ram 22, pusher frame 23 consist of.Pusher frame 23 is fixed on ground by wall screw, cuts somebody's hair 19 to be connected with the piston rod of hydraulic ram 22 by piston rod adapter sleeve 32, and hydraulic ram 22 is fixed by bolts on pusher frame 23.Cut somebody's hair and consisted of by push pedal 30, gusset 31, piston rod adapter sleeve 32.Gusset 31 is arranged on push pedal 30 and piston rod adapter sleeve 32 by bolt, and piston rod adapter sleeve 32 is connected with push pedal 30.

Claims (4)

1. a sponge cadmium cake smelting automatic feeding machine, is characterized in that: be comprised of conveying and positioning device, conveying hopper, material-pulling device, carry hopper to be arranged on the conveying and positioning device upper end, material-pulling device is positioned at a side of conveying and positioning device, described conveying and positioning device is made of frame (1), reducing motor (2), sprocket wheel (3), chain (4), bearing spider (5), roller (6), positioning beam (11), positional cylinder (12), linear bearings (13), locating shaft (14), bearing mounting flange (16), oil cylinder mounting flange (17), roller sprocket wheel (20), reducing motor (2) is fixed on frame (1), sprocket wheel (3) is fixed on reducing motor (2) output shaft and by chain (4) and is connected with roller sprocket wheel (20), roller sprocket wheel (20) is connected with roller (6), roller sprocket wheel (20) is fixed on the bearing spider (5) on right side, two bearing spiders (5) are fixed on position, frame (1) both sides, upper end, positional cylinder (12) is fixed on oil cylinder mounting flange (17), oil cylinder mounting flange (17) is arranged on below positioning beam (11), locating shaft (14) is connected with the piston rod of positional cylinder (12), linear bearings (13) is fixed on bearing mounting flange (16), bearing mounting flange (16) is arranged on above positioning beam (11) and oil cylinder mounting flange (17) correspondence position, described conveying hopper is made of locating slot (15), support pillow (18), riser (25), base plate (27), left plate (28) and right side plate (29), riser (25) is arranged on base plate (27), left plate (28) is connected with riser (25), right side plate (29) is connected 27 with riser (25) with base plate) be connected, be respectively equipped with the pusher mouth on left plate (28) and right side plate (29), locating slot (15) laterally is arranged on bottom base plate (27), support pillow (18) and vertically be arranged on base plate (27) bottom the right and left, hanger (24) is housed on riser (25), described material-pulling device is made of cut somebody's hair (19), hydraulic ram (22), pusher frame (23), cut somebody's hair (19) be connected with the piston rod of hydraulic ram (22) by piston rod adapter sleeve (32), hydraulic ram (22) is fixed on pusher frame (23).
2. sponge cadmium cake smelting automatic feeding machine according to claim 1, it is characterized in that: roller support (8) is installed on bearing spider (5), pedestal fairload (9) is arranged on roller support (8), also is covered with respectively bearing charge (7) and chain wheel cover (21) on bearing spider (5) and roller sprocket wheel (20).
3. sponge cadmium cake smelting automatic feeding machine according to claim 1, it is characterized in that: one or more dividing plates (26) are installed on base plate (27), and dividing plate (26) is connected 29 with left plate (28) with right side plate) be connected, the left side opening of dividing plate (26) is fluted, is placed with backgauge rod (10) in groove.
4. sponge cadmium cake smelting automatic feeding machine according to claim 1 is characterized in that: cut somebody's hair (19) are made of push pedal (30), gusset (31), piston rod adapter sleeve (32); Gusset (31) is connected on push pedal (30) and piston rod adapter sleeve (32), and piston rod adapter sleeve (32) is connected with push pedal (30).
CN201110224953.2A 2011-08-08 2011-08-08 Sponge cadmium cake smelting automatic feeding machine Expired - Fee Related CN102277503B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201110224953.2A CN102277503B (en) 2011-08-08 2011-08-08 Sponge cadmium cake smelting automatic feeding machine

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CN102277503B true CN102277503B (en) 2013-05-15

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CN103173631B (en) * 2013-04-01 2014-09-24 葫芦岛锌业股份有限公司 Smelting method of sponge cadmium

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DE102007015964A1 (en) * 2007-04-03 2008-10-09 Sms Demag Ag Device for introducing metallic ingots into a metal bath
CN201373670Y (en) * 2009-02-18 2009-12-30 株洲火炬工业炉有限责任公司 Automatic charging machine with zinc cathode clips
CN201463590U (en) * 2009-06-29 2010-05-12 昆明理工大学 Right-angled electrolytic zinc plate automatic charger
CN201463588U (en) * 2009-06-29 2010-05-12 昆明理工大学 Automatic oblique material push machine for electrolytic zinc sheets
CN202221238U (en) * 2011-08-08 2012-05-16 昆明理工大学 Sponge cadmium cake smelting automatic feeding machine

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