CN203642704U - Constant-pressure system for atmosphere protective furnace - Google Patents
Constant-pressure system for atmosphere protective furnace Download PDFInfo
- Publication number
- CN203642704U CN203642704U CN201320656816.0U CN201320656816U CN203642704U CN 203642704 U CN203642704 U CN 203642704U CN 201320656816 U CN201320656816 U CN 201320656816U CN 203642704 U CN203642704 U CN 203642704U
- Authority
- CN
- China
- Prior art keywords
- constant
- furnace
- control circuit
- improved
- pressure system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a constant-pressure system for an atmosphere protective furnace. The constant-pressure system for the atmosphere protective furnace comprises an exhaust pipe connected with a furnace chamber; a solenoid valve is connected in series with the exhaust pipe; the control circuit of the solenoid valve is connected with the control circuit of a pressure gauge through a wire. The internal pressure stability in the furnace chamber is guaranteed, and a stable temperature gradient is formed, so as to reserve enough carbon reducing gas; the reduction reaction efficiency is improved, the reducing gas loss in a calcining furnace is reduced, and the product purify is improved, so that the product quality of a lithium iron phosphate cathode material is improved.
Description
Technical field
The utility model relates to a kind of production equipment of LiFePO4, relates in particular to a kind of atmosphere protection stove constant-voltage system.
Background technology
LiFePO4 (LiFePO
4) being mainly used in Prospect of EVS Powered with Batteries, crystal structure is olivine structural, has the characteristic such as high security, life-span length.Be widely used in the electrokinetic cell such as electric motor car, electric tool field and wind generator system energy storage device field etc.At present in LiFePO4 production process, main synthesis mode be exactly iron material, phosphatic raw materials, lithium raw material and carbon raw material in inert atmosphere, carry out sintering calcining, at high temperature carry out redox reaction.
In prior art, atmosphere protection fire grate pore is direct emptying design, and the CO 2 waste gas that lithium raw material is decomposited is drained; But this emptying mode, the partial reduction atmospheric CO that also carbon source high temperature can be generated is drained, reducing gas loss is excessive, this has directly affected the efficiency of the redox reaction of product under hot conditions, raw material reaction deficiency, cause the problem that product purity is not high, thereby finally affected the product quality of lithium iron phosphate positive material.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art; a kind of atmosphere protection stove constant-voltage system is provided; ensure to press in burner hearth stable; form stable warm field gradient; to retain enough carbon reducing gas, improve reduction reaction efficiency, reduce reducing gas loss in calcining furnace; improve product purity, thereby improved the product quality of lithium iron phosphate positive material.
In order to realize foregoing invention object, the technical scheme that the utility model adopts is:
A kind of atmosphere protection stove constant-voltage system, includes the blast pipe being connected with burner hearth, is in series with magnetic valve in blast pipe, and the control circuit of magnetic valve is connected with manometric control circuit by wire.
Described Pressure gauge is electro connecting pressure gauge.
Compared with prior art, its beneficial effect is the utility model:
Atmosphere protection stove constant-voltage system adopts the burner hearth internal pressure of electro connecting pressure gauge monitoring atmosphere protection stove, setting pressure higher limit and lower limit, when interior pressure higher than setting pressure in limited time, solenoid control circuit is connected, magnetic valve is in exhaust work state, to ensure that in burner hearth, pressure is stable, form stable warm field gradient; When pressure is during lower than lower limit; closed electromagnetic valve; to retain enough carbon reducing gas; increase reduction reaction efficiency; this system has reduced the loss of reducing gas in atmosphere protection stove; the efficiency that has improved raw material reduction reaction, has increased the purity of product, thereby has improved the product quality of lithium iron phosphate positive material.
Brief description of the drawings
Fig. 1 is utility model structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, by a most preferred embodiment, technical solutions of the utility model are elaborated, but protection domain of the present utility model is not limited to described embodiment.
As shown in the figure, a kind of atmosphere protection stove constant-voltage system, includes the blast pipe 3 being connected with burner hearth 4, is in series with magnetic valve 1 in blast pipe 3, and Pressure gauge is electro connecting pressure gauge 2, and the control circuit of magnetic valve 1 is connected with manometric control circuit by wire,
Operation principle: atmosphere protection stove constant-voltage system adopts the burner hearth internal pressure of electro connecting pressure gauge monitoring atmosphere protection stove, setting pressure higher limit and lower limit, when interior pressure higher than setting pressure in limited time, solenoid control circuit is connected, magnetic valve is in exhaust work state, to ensure that in burner hearth, pressure is stable, form stable warm field gradient; When pressure is during lower than lower limit; closed electromagnetic valve; to retain enough carbon reducing gas; increase reduction reaction efficiency; this system has reduced the loss of reducing gas in atmosphere protection stove; the efficiency that has improved raw material reduction reaction, has increased the purity of product, thereby has improved the product quality of lithium iron phosphate positive material.
Claims (2)
1. an atmosphere protection stove constant-voltage system, is characterized in that: include the blast pipe being connected with burner hearth, be in series with magnetic valve in blast pipe, the control circuit of magnetic valve is connected with manometric control circuit by wire.
2. according to a kind of atmosphere protection stove constant-voltage system claimed in claim 1, it is characterized in that: described Pressure gauge is electro connecting pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656816.0U CN203642704U (en) | 2013-10-23 | 2013-10-23 | Constant-pressure system for atmosphere protective furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656816.0U CN203642704U (en) | 2013-10-23 | 2013-10-23 | Constant-pressure system for atmosphere protective furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203642704U true CN203642704U (en) | 2014-06-11 |
Family
ID=50873940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320656816.0U Expired - Fee Related CN203642704U (en) | 2013-10-23 | 2013-10-23 | Constant-pressure system for atmosphere protective furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203642704U (en) |
-
2013
- 2013-10-23 CN CN201320656816.0U patent/CN203642704U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103247803B (en) | Graphene-cladding nano germanium composite material as well as preparation method and application thereof | |
| CN105655548A (en) | Method for uniform carbon coating on lithium iron phosphate surface | |
| CN109473675A (en) | A kind of cladded type lithium ferric manganese phosphate positive electrode and its preparation method and application | |
| CN103066291A (en) | Method for preparing lithium battery anode material by internal thermal lengthwise graphitization furnace | |
| CN103159201B (en) | A kind of high pressure, low temperature method preparing carbon-coated LiFePO 4 for lithium ion batteries anode composite material of lithium ion battery | |
| CN103413945A (en) | Manufacturing method of positive material for lithium ion battery | |
| CN203642704U (en) | Constant-pressure system for atmosphere protective furnace | |
| CN105591103A (en) | Modification process of lithium ion battery cathode material | |
| CN103117388B (en) | Carbon coated ferriferrous oxide and preparation method thereof and the application in lithium ion battery | |
| CN102185138B (en) | Preparation method of composite lithium iron phosphate material | |
| CN104022284B (en) | There is the preparation method of lithium ion battery anode material lithium iron phosphate of ion, electronics hybrid conductive network configuration | |
| CN202195702U (en) | Calcinator pressure maintaining system | |
| CN203269577U (en) | Novel crucible for graphitization furnace | |
| CN203432297U (en) | Push plate type microwave high-temperature multipurpose furnace | |
| CN101841216A (en) | Heating method of motor rotor | |
| CN202839805U (en) | Power battery box | |
| CN103759541A (en) | Pressure-holding system for calcining furnace | |
| CN103541002A (en) | Dual-power adaptive control technology applied to polycrystalline silicon ingot casting | |
| CN203998974U (en) | Be convenient to change the medium smelting furnace of plumbago crucible | |
| CN203534224U (en) | Graphite kiln tail waste heat utilization deice | |
| CN202639208U (en) | Integrated intelligent forging furnace | |
| CN203360618U (en) | Heating device of polysilicon ingot furnace | |
| CN104157874B (en) | The preparation method of nano anode material LiFePO4 | |
| CN203521559U (en) | Thermal insulation tank for heating battery | |
| CN206094900U (en) | Energy storage heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140611 Termination date: 20191023 |