CN103196291A - Lead smelting furnace for eliminating melting of lead or lead-base alloy and oxidation in working condition process - Google Patents
Lead smelting furnace for eliminating melting of lead or lead-base alloy and oxidation in working condition process Download PDFInfo
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- CN103196291A CN103196291A CN201310135487XA CN201310135487A CN103196291A CN 103196291 A CN103196291 A CN 103196291A CN 201310135487X A CN201310135487X A CN 201310135487XA CN 201310135487 A CN201310135487 A CN 201310135487A CN 103196291 A CN103196291 A CN 103196291A
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- burner hearth
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Abstract
A lead smelting furnace for eliminating melting of lead or lead-base alloy and oxidation in a working condition process comprises a furnace body and a hearth, an electric heater is arranged at the bottom of the hearth, a sealing furnace cover is arranged on the upper portion of the furnace body, a negative pressure air compressor and a nitrogen source are further arranged, the negative pressure air compressor is communicated with the hearth through a pipeline, and the nitrogen source is communicated with the hearth through another pipeline. The lead smelting furnace is simple and compact in structure and low in pollution and energy consumption, and can be used for manufacturing of cast lead balls (particles) of lead storage batteries, grid casing, plate group cast welding and the like.
Description
Technical field
The present invention relates to a kind of lead melting furnace, especially relate to a kind of lead or lead-containing alloy fusing and oxidized lead melting furnace of operating mode process eliminated.
Background technology
Is the suitability for industrialized production of main raw material(s) with lead or lead-containing alloy at present, all adopts lead melting furnace that lead or lead-containing alloy are heated and cast or cast welding after the fusing.Existing lead melting furnace mostly is the open type lead melting furnace, and the lead melting furnace fire door directly communicates with atmosphere.During work, oxidation reaction must take place and produce 2～3% oxidation lead skim in its gas phase contact interface, and in stove temperature be heated to 〉=when 450 ℃ (generally in 450 ℃～530 ℃ scopes), tend to stack and begin to produce lead fume, and can and aggravate along with the temperature rising, cause environmental pollution serious and that be difficult to improvement, be detrimental to health waste resource and the energy.It is current lead accumulator industry problem anxious to be solved.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the above-mentioned defective that prior art exists, and provides a kind of pollutions little, and the elimination lead that energy consumption is low or lead-containing alloy melt and the oxidized lead melting furnace of operating mode process.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of lead or lead-containing alloy fusing and oxidized lead melting furnace of operating mode process eliminated, comprise body of heater and burner hearth, burner hearth bottom is provided with electric heater, upper of furnace body is provided with the sealing bell, also be provided with the empty machine of negative pressure and source nitrogen, the empty machine of negative pressure communicates with burner hearth by pipeline, and source nitrogen communicates with burner hearth by another pipeline.
Further, described Sealing furnace tops is equipped with pressure gauge.
Further, described Sealing furnace tops also is equipped with safety valve.
Further, the pipeline that links to each other with burner hearth of the empty machine of described negative pressure is provided with negative pressure switch.
Further, the pipeline that described source nitrogen links to each other with burner hearth is provided with pressure-reducing valve and air inlet switch, and pressure-reducing valve is near the source nitrogen arrival end.
Before full work nitrogen in the burner hearth of lead melting furnace, utilize the empty machine of negative pressure that furnace gas is extracted out, then charge into nitrogen, like this, can keep the high-purity of nitrogen 99.99%, bring up the oxygen-free environment in the stove.Make solid-state lead or lead-containing alloy be molten into liquid and keep keeping the gas-phase space in the stove to be occupied by 99.99% purity nitrogen or 99.999% high purity nitrogen in the overall process of operating mode high temperature (the highest be no more than 600 ℃) of certain (being generally 450～520 ℃ of scopes) at the lead melting furnace heat temperature raising; nitrogen pressure is kept above the air pressure of atmospheric pressure 0.02～0.03Mpa; because nitrogen is a kind of stable inert gas; make solid/gas or the liquid/gas interface of the interior lead of lead melting furnace or lead-containing alloy be in all the time in the protection of inert gas nitrogen; its operating mode process is in " anaerobic " environment concerning lead or lead-containing alloy; and nitrogen has the heat-insulation and heat-preservation characteristic again, thereby has eliminated plumbous and lead-containing alloy generation oxidation lead skim and lead fume.The present invention communicates source nitrogen by pipeline with burner hearth, can play dynamic pressurize effect, prevents that nitrogen is revealed in the stove, realizes that nitrogen pressure can be higher than atmospheric pressure always, makes atmosphere can not infiltrate in the stove fully.
The present invention is simple in structure, compact, pollutes for a short time, and energy consumption is low, can be used for the aspect such as casting shot (grain), grid casting, utmost point group cast welding of lead accumulator.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Present embodiment comprises body of heater 1 and burner hearth 2, and burner hearth 2 bottoms are provided with electric heater 7; Body of heater 1 top is provided with sealing bell 8, also is provided with the empty machine 10 of negative pressure and source nitrogen 9, and the empty machine 10 of negative pressure communicates with burner hearth 2 by pipeline, and source nitrogen 9 communicates with burner hearth 2 by another pipeline, and described sealing bell 8 tops are equipped with pressure gauge 3; Described sealing bell 8 tops also are equipped with safety valve 4; The pipeline that the empty machine 10 of described negative pressure links to each other with burner hearth 2 is provided with negative pressure switch 11; The pipeline that described source nitrogen 9 links to each other with burner hearth 2 is provided with pressure-reducing valve 12 and air inlet switch 5, and pressure-reducing valve 12 is near source nitrogen 9 arrival ends.
Using the present invention to realize being example with lead accumulator utmost point group cast welding, the operation principle of the present invention's lead melting furnace is elaborated:
In the burner hearth 2 of lead melting furnace, add solid-state lead or lead-containing alloy 6; Start the empty machine 10 of negative pressure, open negative pressure switch 11, whether inspection body of heater 1 leaks gas with sealing bell 8 joint portions (is namely controlled the interior negative pressure of stove in 0.05 ± 0.01Mpa scope, stablized constant in 5～8 seconds when resting on a certain value observation pressure gauge tabular value, namely be considered as " air tight "), then continue the air of burner hearth 2 upper spaces is extracted out, reach negative pressure value 0.07～0.09MPa after, close negative pressure switch 11; Then, check whether source nitrogen 9 is normal, then adjusts pressure-reducing valve 12, the control nitrogen pressure is higher than the air pressure of atmospheric pressure 0.02～0.03Mpa, adjust the outgas pressure of safety valve 4 simultaneously to technological requirement, open air inlet switch 5, observe pressure gauge 3 tabular values and whether surpass the process safety value; Normal back when surpassing the process safety value (be pressure gauge 3 tabular values), start electric heater 7, solid-state lead or lead-containing alloy 6 heating are made its fusing that heats up, and control its temperature automatically in the technological requirement scope by electric heater 7, heated lead or the lead-containing alloy work condition state of being allowed for access then.
The present invention utilizes the intrinsic feature of nitrogen, with the full lead melting furnace burner hearth gas-phase space of the high purity nitrogen of low pressure, the interior lead of lead melting furnace or lead-containing alloy and oxygen is isolated fully, has eliminated the formation of oxidation lead skim and the generation of lead fume.Reach zero of environment is polluted, eliminated the harm to human body, and reduced energy consumption and plumbous loss.
The present invention be directed to the problem that traditional open type lead melting furnace exists, adopt high-purity low-pressure nitrogen (namely being decompressed to 0.12～0.13Mpa with 99.99% purity nitrogen or 99.999% high purity nitrogen uses) full to carrying out pressurize in the stove, make the interior all gas-phase spaces of lead melting furnace be in dynamic absolute oxygen barrier sealing state.Because nitrogen is inert gas and good heat-insulation and heat-preservation characteristic is arranged, make lead-containing alloy when keeping high-temperature liquid state, reduce energy consumption and prevent oxidation.The malleation of utilizing nitrogen liquid towards lead-containing alloy to produce has simultaneously been built the condition of " inferior pressure pouring ", makes cast welding quick more, smoothly, thereby has realized cutting down the consumption of energy, material consumption, improves the purpose of production capacity and product quality.
Claims (5)
1. eliminate lead or lead-containing alloy fusing and the oxidized lead melting furnace of operating mode process for one kind, comprise body of heater and burner hearth, burner hearth bottom is provided with electric heater, it is characterized in that, upper of furnace body is provided with the sealing bell, also be provided with the empty machine of negative pressure and source nitrogen, the empty machine of negative pressure communicates with burner hearth by pipeline, and source nitrogen communicates with burner hearth by another pipeline.
2. the fusing of elimination lead according to claim 1 or lead-containing alloy and the oxidized lead melting furnace of operating mode process is characterized in that described Sealing furnace tops is equipped with pressure gauge.
3. the fusing of elimination lead according to claim 1 and 2 or lead-containing alloy and the oxidized lead melting furnace of operating mode process is characterized in that described Sealing furnace tops also is equipped with safety valve.
4. the fusing of elimination lead according to claim 1 and 2 or lead-containing alloy and the oxidized lead melting furnace of operating mode process is characterized in that, the pipeline that the empty machine of described negative pressure links to each other with burner hearth is provided with negative pressure switch.
5. the fusing of elimination lead according to claim 1 and 2 or lead-containing alloy and the oxidized lead melting furnace of operating mode process is characterized in that the pipeline that described source nitrogen links to each other with burner hearth is provided with pressure-reducing valve and air inlet switch, and pressure-reducing valve is near the source nitrogen arrival end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310135487XA CN103196291A (en) | 2013-04-18 | 2013-04-18 | Lead smelting furnace for eliminating melting of lead or lead-base alloy and oxidation in working condition process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310135487XA CN103196291A (en) | 2013-04-18 | 2013-04-18 | Lead smelting furnace for eliminating melting of lead or lead-base alloy and oxidation in working condition process |
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| CN103196291A true CN103196291A (en) | 2013-07-10 |
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| CN201310135487XA Pending CN103196291A (en) | 2013-04-18 | 2013-04-18 | Lead smelting furnace for eliminating melting of lead or lead-base alloy and oxidation in working condition process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764056A (en) * | 2016-08-19 | 2018-03-06 | 超威电源有限公司 | A kind of lead melting furnace |
| WO2018152805A1 (en) * | 2017-02-25 | 2018-08-30 | 深圳市玖创科技有限公司 | Sintering device for battery positive electrode materials |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115868A (en) * | 1989-10-04 | 1992-05-26 | E. I. Du Pont De Nemours And Company | Fire extinguishing composition and process |
| CN2856894Y (en) * | 2005-07-11 | 2007-01-10 | 秦文隆 | Structure improvement in atmosphere furnace |
| CN101706205A (en) * | 2009-11-24 | 2010-05-12 | 苏州有色金属研究院有限公司 | Pressure-flow-type magnesium alloy smelting heat insulating furnace |
| CN201514114U (en) * | 2009-09-03 | 2010-06-23 | 张保国 | Double-chamber vacuum directional smelting furnace |
| CN101469940B (en) * | 2007-12-26 | 2012-01-25 | 北京有色金属研究总院 | Annular region smelting furnace |
-
2013
- 2013-04-18 CN CN201310135487XA patent/CN103196291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115868A (en) * | 1989-10-04 | 1992-05-26 | E. I. Du Pont De Nemours And Company | Fire extinguishing composition and process |
| CN2856894Y (en) * | 2005-07-11 | 2007-01-10 | 秦文隆 | Structure improvement in atmosphere furnace |
| CN101469940B (en) * | 2007-12-26 | 2012-01-25 | 北京有色金属研究总院 | Annular region smelting furnace |
| CN201514114U (en) * | 2009-09-03 | 2010-06-23 | 张保国 | Double-chamber vacuum directional smelting furnace |
| CN101706205A (en) * | 2009-11-24 | 2010-05-12 | 苏州有色金属研究院有限公司 | Pressure-flow-type magnesium alloy smelting heat insulating furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764056A (en) * | 2016-08-19 | 2018-03-06 | 超威电源有限公司 | A kind of lead melting furnace |
| WO2018152805A1 (en) * | 2017-02-25 | 2018-08-30 | 深圳市玖创科技有限公司 | Sintering device for battery positive electrode materials |
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Application publication date: 20130710 |