CN101476045A - Method for smelting copper - Google Patents
Method for smelting copper Download PDFInfo
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- CN101476045A CN101476045A CNA2009100956283A CN200910095628A CN101476045A CN 101476045 A CN101476045 A CN 101476045A CN A2009100956283 A CNA2009100956283 A CN A2009100956283A CN 200910095628 A CN200910095628 A CN 200910095628A CN 101476045 A CN101476045 A CN 101476045A
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- supporting gas
- injection pipe
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Abstract
The invention provides a method of smelting copper. The method comprises the following steps: putting copper material (4) into a smelting furnace (1), infusing fuel and combustion-supporting gas to the smelting furnace (1) for increasing the temperature of the copper material (4) and then melting the copper material (4), and the method is characterized in that the fuel is infused into the smelting furnace (1) through a fuel injection pipe (2), while the combustion-supporting gas is infused into the smelting furnace (1) through a gas injection pipe (3), and the included angle a of the fuel injection pipe (2) and the wall (11) of the smelting furnace is 70-83 DEG, while the included angle b of the gas injection pipe (3) and the wall (11) of the smelting furnace is 70-83 DEG, wherein, the combustion-supporting gas is oxygen with a purity of more than 90%.The invention possesses the advantages that all the combustion-supporting gas participates in the combustion of reduced oil or other fuels, therefore, heat quantity took away by flue gas is greatly reduced and the heat generated by the fuel is almost entirely used for the melting of copper, and thus, the fuel consumed by the melting of copper is greatly reduced and the metal melting time is shortened by 4-6 hours by using a full-oxygen combustion method; according to the invention the included angle of the injection pipe and the wall of the smelting furnace is designed to be 70-83 DEG, therefore, the fuel and the combustion-supporting gas infused into the smelting furnace can be dispersed uniformly and the fuel can be burned adequately.
Description
Technical field
The invention belongs to the nonferrous smelting technical field, particularly relate to a kind of method that is used for melting copper.
Background technology
In the copper fusion process, the heatable substance of Cai Yonging was fuel and combustion air in the past, and promptly in combustion processes, the combustion-supporting gas of feeding is an air, and its oxygen content is 21%, other gas contents 79% such as nitrogen.Because of participating in incendiary is 21% oxygen, all the other gases of 79% do not participate in burning, combustion-supporting air quantity is big, be discharged from a large amount of nitrogen absorb heat in furnace chamber after, funnel temperature can be up to more than 1200 ℃, and the heat that smoke evacuation is taken away accounts for more than 60% of heat output of fuel, cause copper melting process calorific loss big, the energy consumption height, fusing time is long, and copper loss is big.And because exhaust smoke level is big, temperature is high, brings difficulty to smoke gas treatment.And,, environment is polluted because the existence of a large amount of nitrogen can generate oxynitride in the combustion processes in the combustion zone.
Summary of the invention
Technical problem to be solved by this invention is the method that the melting copper that a kind of copper melting energy consumption is low, fusing time is short, environmental pollution is little is provided at above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the method for this melting copper, this method may further comprise the steps: the copper material is placed smelting furnace, in smelting furnace, feed fuel and the combustion-supporting gas that makes the copper material heat up and melt then then, it is characterized in that: described fuel by fuel injection pipe combustion-supporting gas import in the smelting furnace respectively by the combustion-supporting gas spray tube, and the angle a of fuel injection pipe and melting furnace wall is the 70-83 degree, and the angle b of combustion-supporting gas spray tube and melting furnace wall is the 70-83 degree, described combustion-supporting gas is an oxygen, and the purity of this oxygen is more than 90%.
Above-mentioned fuel and combustion-supporting gas mix in smelting furnace, and the pressure of fuel and flow are regulated control by fuel pressure regulator and fuel flow control valve, and the pressure of combustion-supporting gas and flow are regulated control by combustion-supporting atmospheric pressure setter and combustion air current adjustable valve.
As improvement, described fuel injection pipe and combustion-supporting gas spray tube stretch in the smelting furnace when input fuel and combustion-supporting gas, and burning finishes the back and withdraws from smelting furnace.
Improve, fuel injection pipe and the combustion-supporting gas spray tube of importing fuel and combustion-supporting gas to smelting furnace are to be provided with in pairs again, and its number is one to five pair in smelting furnace.
Improve, described fuel is heavy oil, residual oil, Sweet natural gas or liquefied petroleum gas (LPG) again.
Compared with prior art, the invention has the advantages that and adopt fuel and oxygen as combustion substance, because the combustion-supporting gas of input smelting furnace is oxygen (oxygen content is more than 90%), be that combustion-supporting gas all participates in the burning of heavy oil or other fuel, therefore exhaust gas volumn significantly reduces, the heat that flue gas is taken away reduces, and the spent fuel of copper melting reduces greatly, drops to about 45kg/t from original 70kg/t as unit consumption of heavy oil.Simultaneously, the melting of metal time can shorten 4-6 hour, has improved melting of metal speed, has reduced copper loss, and improved the throughput and the labour productivity of equipment; Because combustion zone nitrogen reduces, the amount of nitrogen oxides of generation reduces, thereby has alleviated the pollution to environment.The angle of spray tube and melting furnace wall is designed to 70～83 degree, and the stop of long period that can effectively ensure high-temperature gas in stove and washing away the copper material is lip-deep in the stove to improve heat transfer efficiency, makes copper material homogeneous heating, and fusing fully avoids occurring red slag phenomenon.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the method of the melting copper in the present embodiment may further comprise the steps: copper material 4 is placed smelting furnace 1, in smelting furnace 1, feed fuel and the combustion-supporting gas that makes copper material 4 heat up and melt then then, it is characterized in that: import respectively in the smelting furnace 1 by combustion-supporting gas spray tube 3 by combustion-supporting gas by fuel injection pipe 2 for described fuel, and fuel injection pipe 2 is the 70-83 degree with the angle a of melting furnace wall 11, and the angle b of combustion-supporting gas spray tube 3 and melting furnace wall 11 is the 70-83 degree, described combustion-supporting gas is an oxygen, and the purity of this oxygen is more than 90%.Described fuel and combustion-supporting gas mix in smelting furnace 1, and the pressure of fuel and flow are regulated control by fuel pressure regulator 21 and fuel flow control valve 22, and the pressure of combustion-supporting gas and flow are regulated control by combustion-supporting atmospheric pressure setter 31 and combustion air current adjustable valve 32.Described fuel injection pipe 2 and combustion-supporting gas spray tube 3 stretch in the smelting furnace 1 when input fuel and combustion-supporting gas, and burning finishes the back and withdraws from smelting furnace 1.And give the fuel injection pipe 2 of smelting furnace 1 input fuel and combustion-supporting gas and combustion-supporting gas spray tube 3 is to be provided with in pairs, and its number is one to five pair in smelting furnace 1.Described fuel may be selected to be heavy oil, residual oil, Sweet natural gas or liquefied petroleum gas (LPG).
The invention will be further described below in conjunction with accompanying drawing.
On the molten employed smelting furnace 1 of copper, the opening 12 that two spray tubes stretch into and stretch out is set, be used for installation, fixed fuel spray tube 2 and combustion-supporting gas spray tube 3.Fuel injection pipe 2 and combustion-supporting gas spray tube 3 pass in and out smelting furnace 1 movably, and the angle of fuel injection pipe 2 and combustion-supporting gas spray tube 3 and smelting furnace 1 can be preferably 80～83 degree.Fuel injection pipe 2 and combustion-supporting gas spray tube 3 can be preferably and be provided with a pair of respectively simultaneously or two pairs.In smelting furnace 1 during melting copper, fuel and oxygen is by in fuel injection pipe 2 and the combustion-supporting gas spray tube 3 input smelting furnaces 1, and burns after the mixing smelting furnace 1 in, and copper is heated.The purity of aerating oxygen is more than 90%.Above-mentioned do not have the per-cent of specified otherwise to be meant volume percent.
Claims (5)
1, a kind of method of melting copper, this method may further comprise the steps: copper material (4) is placed smelting furnace (1), in smelting furnace (1), feed fuel and the combustion-supporting gas that makes copper material (4) heat up and melt then then, it is characterized in that: import respectively in the smelting furnace (1) by combustion-supporting gas spray tube (3) by combustion-supporting gas by fuel injection pipe (2) for described fuel, and fuel injection pipe (2) is the 70-83 degree with the angle a of melting furnace wall (11), and the angle b of combustion-supporting gas spray tube (3) and melting furnace wall (11) is the 70-83 degree, described combustion-supporting gas is an oxygen, and the purity of this oxygen is more than 90%.
2, method according to claim 1, it is characterized in that: described fuel and combustion-supporting gas mix in smelting furnace (1), and the pressure of fuel and flow are regulated control by fuel pressure regulator (21) and fuel flow control valve (22), and the pressure of combustion-supporting gas and flow are regulated control by combustion-supporting atmospheric pressure setter (31) and combustion air current adjustable valve (32).
3, method according to claim 2 is characterized in that: described fuel injection pipe (2) and combustion-supporting gas spray tube (3) stretch in the smelting furnace (1) when input fuel and combustion-supporting gas, and burning finishes the back and withdraws from smelting furnace (1).
4, according to claim 1 or 2 or 3 described methods, it is characterized in that: be setting in pairs for the fuel injection pipe (2) of smelting furnace (1) input fuel and combustion-supporting gas and combustion-supporting gas spray tube (3), its number is one to five pair in smelting furnace (1).
5, according to claim 1 or 2 or 3 described methods, it is characterized in that: described fuel is heavy oil, residual oil, Sweet natural gas or liquefied petroleum gas (LPG).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100956283A CN101476045A (en) | 2009-01-14 | 2009-01-14 | Method for smelting copper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100956283A CN101476045A (en) | 2009-01-14 | 2009-01-14 | Method for smelting copper |
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| Publication Number | Publication Date |
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| CN101476045A true CN101476045A (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100956283A Pending CN101476045A (en) | 2009-01-14 | 2009-01-14 | Method for smelting copper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828045A (en) * | 2012-09-07 | 2012-12-19 | 白银有色集团股份有限公司 | Special pulverized coal burner for silver and copper molten pool smelting furnace |
| CN105331829A (en) * | 2015-11-20 | 2016-02-17 | 金川集团股份有限公司 | Secondary melting method for solidified copper in drum-shaped copper melting furnace |
| CN105444578A (en) * | 2014-08-19 | 2016-03-30 | 布法罗科技有限公司 | Heating method for chute |
| CN105543497A (en) * | 2015-12-17 | 2016-05-04 | 天津华北集团铜业有限公司 | Process for smelting copper through oxygen-fuel combustion technique |
| CN107201444A (en) * | 2017-07-11 | 2017-09-26 | 云汇环保科技南通有限公司 | A kind of blowing-furnace oxygen-rich smelting method |
| CN113738917A (en) * | 2021-08-17 | 2021-12-03 | 江西瑞达金属材料有限公司 | Copper pole apparatus for producing |
-
2009
- 2009-01-14 CN CNA2009100956283A patent/CN101476045A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828045A (en) * | 2012-09-07 | 2012-12-19 | 白银有色集团股份有限公司 | Special pulverized coal burner for silver and copper molten pool smelting furnace |
| CN102828045B (en) * | 2012-09-07 | 2013-08-21 | 白银有色集团股份有限公司 | Special pulverized coal burner for silver and copper molten pool smelting furnace |
| CN105444578A (en) * | 2014-08-19 | 2016-03-30 | 布法罗科技有限公司 | Heating method for chute |
| CN105331829A (en) * | 2015-11-20 | 2016-02-17 | 金川集团股份有限公司 | Secondary melting method for solidified copper in drum-shaped copper melting furnace |
| CN105543497A (en) * | 2015-12-17 | 2016-05-04 | 天津华北集团铜业有限公司 | Process for smelting copper through oxygen-fuel combustion technique |
| CN107201444A (en) * | 2017-07-11 | 2017-09-26 | 云汇环保科技南通有限公司 | A kind of blowing-furnace oxygen-rich smelting method |
| CN113738917A (en) * | 2021-08-17 | 2021-12-03 | 江西瑞达金属材料有限公司 | Copper pole apparatus for producing |
| CN113738917B (en) * | 2021-08-17 | 2024-04-09 | 江西瑞达金属材料有限公司 | Copper pole apparatus for producing |
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Open date: 20090708 |