CN204702812U - A kind of device of low-temperature electrolytic divided silicon aluminium alloy - Google Patents
A kind of device of low-temperature electrolytic divided silicon aluminium alloy Download PDFInfo
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- CN204702812U CN204702812U CN201520234333.0U CN201520234333U CN204702812U CN 204702812 U CN204702812 U CN 204702812U CN 201520234333 U CN201520234333 U CN 201520234333U CN 204702812 U CN204702812 U CN 204702812U
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Abstract
The utility model discloses a kind of device of low-temperature electrolytic divided silicon aluminium alloy, it comprises electrolyzer and anode baskets; The main body of described electrolyzer is carbonaceous crucible, the outer wall of described carbonaceous crucible is fitted with thermal insulation layer, steel shell is fitted with outside described thermal insulation layer, conducting plates is provided with between the bottom of described carbonaceous crucible and described thermal insulation layer, one end of described conducting plates extends out to the outside of described steel shell, the inner side-wall of described carbonaceous crucible is fitted with insulation layer, and the bottom of described carbonaceous crucible is fitted with aluminium sheet.The utility model apparatus structure is simple, processing ease, output are large; Electrolysis at low temperatures, charging and discharging are all solid material, avoid high temperature oxidation, and the simple and energy-conserving and environment-protective of operating process, production cost is low.
Description
Technical field:
The utility model relates to a kind of device of divided silicon aluminium alloy, particularly relates to a kind of device of low-temperature electrolytic divided silicon aluminium alloy.
Background technology:
Solar energy level silicon is the main raw material(s) of photovoltaic products, and its cost for purification and quality product become the important factor of restriction photovoltaic industry stable development.Metallurgy method is the polysilicon purification method of a kind of low cost, less energy-consumption, wherein refining and modifying method in silicon, adds aluminium and silicon forms silumin alloy melt, again by controlling cooling rate, the effect of segregation of impurity between primary silicon and alloy melt is utilized to purify.
Having produced of silumin molten converts method, ore deposit hot reducing method and fused salt electrolysis process etc., but how divided silicon, aluminium are the difficult points of refining and modifying method purifying polycrystalline silicon technology practical application thereafter.At present, the methods such as acid-soluble, alloy filtration, induction melting, hypergravity, directional freeze are mainly contained for the separation of silumin phase.Wherein, pickling be with acid-soluble go out aluminium in silumin, consumption acid is many, and aluminium is difficult to reclaim.Consume a large amount of sour reagent and metal, cause environmental pollution, energy consumption increase, or service temperature is high, equipment is complicated, inefficiency.
Utility model content:
The purpose of this utility model is to provide that a kind of structure is simple, the device of convenient operation, efficiently low-temperature electrolytic divided silicon aluminium alloy.
The utility model with carbonaceous crucible bottom aluminum plate for negative electrode, above it, stainless steel anode frame is anode, silumin to be separated is placed in basketry, in low-temperature electrolytes, by solid state electrolysis, silumin is separated, obtain primary silicon and spongy aluminium, then solar energy level silicon and rafifinal two kinds of products can be obtained through processing further.
The purpose of this utility model is implemented by following technical scheme, a kind of device of low-temperature electrolytic divided silicon aluminium alloy, and it comprises electrolyzer and anode baskets, and described anode baskets is inserted in described electrolyzer; The main body of described electrolyzer is carbonaceous crucible, the outer wall of described carbonaceous crucible is fitted with thermal insulation layer, steel shell is fitted with outside described thermal insulation layer, described steel shell price is low is easy to processing, conducting plates is provided with between the bottom of described carbonaceous crucible and described thermal insulation layer, one end of described conducting plates extends out to the outside of described steel shell, the inner side-wall of described carbonaceous crucible is fitted with insulation layer, the bottom of described carbonaceous crucible is fitted with aluminium sheet, select aluminium sheet to make negative electrode, form carbide to avoid carbon cathode and electrolysate;
Described anode baskets comprises the basketry of an anode frame that Open Side Down and opening upwards, the opening of described anode frame and the upper and lower opposing lap joint ends of opening of described basketry integral, the opening of described anode frame is connected by knot that can be undone by a pull with the opening of described basketry, and the bottom of described basketry is reticulated structure.
Described anode frame is stainless steel anode frame, and the reticulated structure of described basket bottom is Stainless Steel Cloth, stainless steel anode frame and the resistance to fused salt corrosion of Stainless Steel Cloth, and cheap.
Described conducting plates is soft steel conducting plates.
Described insulation layer is silicon nitride plate or the engineering plastics of heat resisting temperature more than 200 DEG C.
The end face suitable for reading of described electrolyzer scribbles silicon nitride protective layer or refractory cements protective layer.
The side, bottom of described carbonaceous crucible is provided with groove, is convenient to collect electrolysate, and described groove surfaces is fitted with described aluminium sheet.
The square crucible that described carbonaceous crucible is built into by graphite base plate and 4 pieces of graphite side or the square crucible be built into by carbon brick base plate and 4 blocks of carbon brick side plates.
The top of described anode frame is provided with and promotes conducting rod, inert gas plenum mouth, pressure warning unit, thermometer and bleeding point, and the bottom of described lifting conducting rod is fixed on the top of described anode frame.The top of described lifting conducting rod is clamped by motor-driven anode hoisting device, and described lifting conducting rod can drive described anode baskets to move up and down under motor-driven anode hoisting device drives.
Described anode frame outer side wall top is provided with the fiberglass sealed layer of resistance to chlorine corrosion, and described anode baskets is placed in described electrolyzer, is tightly connected between the inwall of described fiberglass sealed layer and described electrolyzer opening part.
Principle of work of the present utility model: select low temperature molten salt electrolysis plastome, silumin carries out galvanostatic deposition as anode.According to thermodynamic principles, in the various metallic elements of anode alloy, only have aluminium to dissolve on anode, and do not dissolve as silicon, the inactive metallic element of iron geometric ratio aluminium, still stay in alloy.Move in the various positively charged ions of negative electrode at electrolytic solution, the electropotential of aluminium is than calibration, therefore Al
3+preferentially on negative electrode, obtain electronics, precipitating metal aluminium.After electrolysis, silicon exists with anode sludge form, and aluminium deposits with cathode product.
Advantage of the present utility model: (1) the utility model apparatus structure is simple, processing ease, and output is large; (2) manufacturing the utility model device material therefor selects more common material to reach production requirement, and manufacturing cost is low; (3) electrolysis at low temperatures, charging and discharging are all solid material, avoid high temperature oxidation; (4) divided silicon aluminum alloy for primary silicon and rafifinal flow process short, operating process is simple, and output is large, and production efficiency improves greatly; (5) in a large number save sour reagent dosage, reduce material cost, and can reclaim solar-grade polysilicon and purity is the aluminium of 99.3wt% ~ 99.7wt% simultaneously, overcome acid consumption in current acid cleaning process large, aluminium is difficult to the problem reclaimed; (6) the utility model technique can not to environment, energy-conserving and environment-protective.
Accompanying drawing illustrates:
Fig. 1 is the apparatus structure schematic diagram of embodiment 1 low-temperature electrolytic divided silicon aluminium alloy.
Fig. 2 is the device using state schematic diagram of embodiment 1 low-temperature electrolytic divided silicon aluminium alloy.
Conducting plates 1, thermal insulation layer 2, graphite base plate 3, graphite side 4; silicon nitride plate 5, basketry 6, anode frame 7, silicon nitride protective layer 8; fiberglass sealed layer 9, inflation inlet 10, pressure warning unit 11; promote conducting rod 12, thermometer 13, bleeding point 14; ionogen 15, primary silicon 16, sponge aluminium 17; aluminium sheet 18, steel shell 19, groove 20.
Embodiment:
Embodiment 1: a kind of device of low-temperature electrolytic divided silicon aluminium alloy, it comprises electrolyzer and anode baskets; The main body of electrolyzer is carbonaceous crucible, the square crucible that carbonaceous crucible is built into by graphite base plate 3 and 4 pieces of graphite side 4, or the square crucible that carbonaceous crucible is built into by carbon brick base plate and 4 blocks of carbon brick side plates.The outer wall of carbonaceous crucible is fitted with thermal insulation layer 2; steel shell 19 is fitted with outside thermal insulation layer 2; steel shell 19 price is low is easy to processing, and the end face suitable for reading of electrolyzer scribbles silicon nitride protective layer 8, and silicon nitride protective layer 8 can also replace with refractory cements protective layer.Be provided with conducting plates 1 between the bottom of carbonaceous crucible and thermal insulation layer 2, one end of conducting plates 1 extends out to the outside of steel shell 19, and conducting plates 1 is soft steel conducting plates.The inner side-wall of carbonaceous crucible is fitted with silicon nitride plate 5, silicon nitride plate 5 can also replace with the engineering plastics of heat resisting temperature more than 200 DEG C.The bottom of carbonaceous crucible is fitted with aluminium sheet 18, selects aluminium sheet 18 to make negative electrode, forms carbide to avoid carbon cathode and electrolysate; The side, bottom of carbonaceous crucible is provided with groove 20, is convenient to collect electrolysate, and groove 20 surface is fitted with aluminium sheet 18.
Anode baskets comprises the basketry 6 of an anode frame that Open Side Down 7 and opening upwards, the opening of anode frame 7 and the upper and lower opposing lap joint ends of opening of basketry 6 integral, the opening of anode frame 7 is connected by knot that can be undone by a pull with the opening of basketry 6, anode frame 7 is stainless steel anode frame, the bottom of basketry 6 is Stainless Steel Cloth, stainless steel anode frame and the resistance to fused salt corrosion of Stainless Steel Cloth, and cheap.The top of anode frame 7 is provided with and promotes conducting rod 12, inert gas plenum mouth 10, pressure warning unit 11, thermometer 13 and bleeding point 14, and the bottom promoting conducting rod 12 is fixed on the top of anode frame 7.Promote the top of conducting rod 12 clamped by motor-driven anode hoisting device, promote conducting rod and anode baskets can be driven to move up and down under motor-driven anode hoisting device drives; Anode frame 7 outer side wall top is provided with the fiberglass sealed layer 9 of resistance to chlorine corrosion, and anode baskets is placed in electrolyzer, is tightly connected between the inwall of fiberglass sealed layer 9 and electrolyzer opening part.
The utility model with carbonaceous crucible bottom aluminum plate 18 for negative electrode, above it, stainless steel anode frame 7 is anode, silumin to be separated is placed in basketry 6, in low-temperature electrolytes 15, by solid state electrolysis, silumin is separated, obtain primary silicon 16 and sponge aluminium 17, then solar energy level silicon and rafifinal two kinds of products can be obtained through processing further.
Claims (9)
1. a device for low-temperature electrolytic divided silicon aluminium alloy, is characterized in that: it comprises electrolyzer and anode baskets, and described anode baskets is inserted in described electrolyzer; The main body of described electrolyzer is carbonaceous crucible, the outer wall of described carbonaceous crucible is fitted with thermal insulation layer, steel shell is fitted with outside described thermal insulation layer, conducting plates is provided with between the bottom of described carbonaceous crucible and described thermal insulation layer, one end of described conducting plates extends out to the outside of described steel shell, the inner side-wall of described carbonaceous crucible is fitted with insulation layer, and the bottom of described carbonaceous crucible is fitted with aluminium sheet;
Described anode baskets comprises the basketry of an anode frame that Open Side Down and opening upwards, the opening of described anode frame and the upper and lower opposing lap joint ends of opening of described basketry integral, the opening of described anode frame is connected by knot that can be undone by a pull with the opening of described basketry, and the bottom of described basketry is reticulated structure.
2. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 1, is characterized in that: described anode frame is stainless steel anode frame, and the reticulated structure of described basket bottom is Stainless Steel Cloth.
3. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 1, is characterized in that: described conducting plates is soft steel conducting plates.
4. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 1, is characterized in that: described insulation layer is silicon nitride plate or the engineering plastics of heat resisting temperature more than 200 DEG C.
5. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 1, is characterized in that: the end face suitable for reading of described electrolyzer scribbles silicon nitride protective layer or refractory cements protective layer.
6. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 1-5 any one, is characterized in that: the side, bottom of described carbonaceous crucible is provided with groove, and described groove surfaces is fitted with described aluminium sheet.
7. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 6, is characterized in that: the square crucible that described carbonaceous crucible is built into by graphite base plate and 4 pieces of graphite side or the square crucible be built into by carbon brick base plate and 4 blocks of carbon brick side plates.
8. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 6, it is characterized in that: the top of described anode frame is provided with and promotes conducting rod, inert gas plenum mouth, pressure warning unit, thermometer and bleeding point, and the bottom of described lifting conducting rod is fixed on the top of described anode frame.
9. the device of a kind of low-temperature electrolytic divided silicon aluminium alloy according to claim 6, it is characterized in that: described anode frame outer side wall top is provided with fiberglass sealed layer, described anode baskets is placed in described electrolyzer, is tightly connected between the inwall of described fiberglass sealed layer and described electrolyzer opening part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520234333.0U CN204702812U (en) | 2015-04-17 | 2015-04-17 | A kind of device of low-temperature electrolytic divided silicon aluminium alloy |
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| CN201520234333.0U CN204702812U (en) | 2015-04-17 | 2015-04-17 | A kind of device of low-temperature electrolytic divided silicon aluminium alloy |
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| CN204702812U true CN204702812U (en) | 2015-10-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846402A (en) * | 2015-04-17 | 2015-08-19 | 内蒙古机电职业技术学院 | Apparatus and method for low temperature electrolysis separation of silicon-aluminum alloy |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104846402A (en) * | 2015-04-17 | 2015-08-19 | 内蒙古机电职业技术学院 | Apparatus and method for low temperature electrolysis separation of silicon-aluminum alloy |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20180417 |