CN110564976B - Process method for automatically dropping spray gun weight of Ausmelt furnace - Google Patents
Process method for automatically dropping spray gun weight of Ausmelt furnace Download PDFInfo
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- CN110564976B CN110564976B CN201910988408.7A CN201910988408A CN110564976B CN 110564976 B CN110564976 B CN 110564976B CN 201910988408 A CN201910988408 A CN 201910988408A CN 110564976 B CN110564976 B CN 110564976B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
Abstract
The invention relates to a process method for automatically dropping the gun weight of a spray gun of an Ausmelt furnace, which comprises the following steps: firstly, optimizing a pipeline; secondly, when the weight of the spray gun of the Ausmelt furnace exceeds the process standard, a pneumatic valve on an air supply pipe of the heat-preservation burner is opened, the air quantity in a sleeve air supply pipe of the emptying part is released, and the temperature of a cylinder body of the spray gun rises to expand for 2-3 min; thirdly, in the time of reducing the air quantity of the sleeve, the gun position of the spray gun is reduced by 50-100 mm, the original gun position is recovered after the spray gun stays for 30s, and the operation is carried out for 2-3 times; closing a pneumatic valve Q on an air supply pipe of the heat-preservation burner; lifting the gun position by 50-100 mm after the sleeve air volume is recovered, recovering the original gun position after the sleeve air volume is retained for 30s, and performing back and forth operation for 2-3 times; sixthly, repeating the steps from the first step to the fifth step for a plurality of times until the spray gun falls off; the invention can basically lead the spray gun weight of the Ausmelt furnace to automatically fall off by optimizing the process operation method, greatly reduces the cleaning time of the spray gun and improves the operation efficiency of the Ausmelt furnace.
Description
Technical Field
The invention relates to the technical field of copper pyrometallurgical smelting equipment, in particular to a process method for automatically dropping the weight of a spray gun of an Ausmelt furnace.
Background
In the copper smelting process of an Ausmelt furnace (hereinafter referred to as an Ausmelt furnace), an Ausmelt furnace spray gun provides required wind, oxygen and coal for smelting, and continuously stirs a molten pool to accelerate the mixing of materials and the transfer of heat, so that the method is a key technology for the copper smelting of the Ausmelt furnace. In the production process, in order to prolong the service life of the Australian furnace spray gun, the slag hanging operation is often required to be carried out on the spray gun when the spray gun is used for producing: the position of the spray gun is lowered to the flat liquid level or 100mm away from the liquid level, so that slag is splashed to the outer wall of the spray gun barrel. A small amount of slag hanging on the spray gun can protect the spray gun and prolong the service life of the spray gun, but in practical production, the spray gun submerges a molten pool, the slag continuously splashes to the spray gun and is adhered to the outer wall of a spray gun barrel, the time is long, too much slag is adhered to the spray gun, the swing of the spray gun is weakened, the stirring of the molten pool is weakened, the transfer of materials and heat of the molten pool is not facilitated, and even the generation of raw materials and the nodulation of the spray gun can be caused in serious conditions, so in practical production, when the weight of the spray gun is too heavy, the spray gun needs to be lifted to clean the coking on the spray gun (hereinafter referred to as gun weight cleaning). In the prior smelting of the copper in the Australian furnace, the gun cleaning frequency of the spray gun of the Australian furnace is high, the time is long, the weight of the spray gun needs to be cleaned once in about 6 hours on average, the cleaning time is about 15min each time, the method for cleaning the weight of the spray gun adopts a method for lifting the spray gun to clean manually, the frequent cleaning of the gun weight is not beneficial to the continuous production operation of the Australian furnace, the change of the temperature in the process of cleaning the gun weight has great damage to the service life of the Australian furnace and the service life of the spray gun, and the labor intensity of the original method for manually cleaning the weight of the spray gun is also great.
Disclosure of Invention
The invention aims to solve the problems of the spray gun of the Ausmelt furnace in the process of using the process, and provides a process method for automatically dropping the spray gun weight of the Ausmelt furnace, which replaces the original mode of manually cleaning the spray gun weight, thereby reducing the cleaning frequency of the spray gun of the Ausmelt furnace, being beneficial to improving the air-on time rate of the Ausmelt furnace, reducing the fluctuation change of the temperature of the Ausmelt furnace, prolonging the furnace life and the gun life of the Ausmelt furnace and improving the output of the Ausmelt furnace.
The specific scheme of the invention is as follows: the process method for automatically dropping the gun weight of the spray gun of the Ausmelt furnace comprises spray gun air, sleeve air and heat preservation burner air, wherein an oxygen pipe is merged into the spray gun air supply pipe, the spray gun air supply pipe and the sleeve air supply pipe are introduced into the spray gun together, the heat preservation burner air supply pipe is introduced into a heat preservation burner, and the process for automatically dropping the gun weight of the spray gun comprises the following steps:
optimizing a pipeline: because the air quantity of the spray gun sleeve of the Ausmelt furnace is equivalent to that of the heat-preservation burner air, the sleeve air supply pipe and the heat-preservation burner air supply pipeline are communicated in parallel through an electric valve P, a manual valve M is connected between the sleeve air supply pipe and the heat-preservation burner air supply pipeline, and the sleeve air fan and the heat-preservation burner air fan are in a one-use one-standby state;
secondly, when the weight of the spray gun of the Ausmelt furnace exceeds the process standard, a pneumatic valve on an air supply pipe of the heat-preservation burner is opened, the air quantity in a sleeve air supply pipe of the emptying part is reduced, the air quantity of the sleeve air is reduced, and the temperature of the barrel body of the spray gun rises to expand for 2-3 min;
thirdly, in the time of reducing the air quantity of the sleeve, the gun position of the spray gun is reduced by 50-100 mm, the original gun position is recovered after the spray gun stays for 30s, and the operation is carried out for 2-3 times;
closing a pneumatic valve Q on the air supply pipe of the heat-preservation burner, recovering the air quantity of the sleeve, and cooling and shrinking the spray gun barrel;
lifting the gun position by 50-100 mm after the sleeve air volume is recovered, recovering the original gun position after the sleeve air volume is retained for 30s, and performing back and forth operation for 2-3 times;
sixthly, repeating the steps from the first step to the fifth step for a plurality of times until the spray gun falls off.
Further, the air supply fan of the spray gun air adopts a 3K fan, the air supply fan of the sleeve air adopts a high-pressure blower of Shenzhou group, and the air supply fan of the heat preservation nozzle air adopts a high-pressure blower of Shaanzhou group.
Furthermore, the air supply fans corresponding to the spray gun air, the sleeve air and the heat preservation burner air are respectively provided with a silencing assembly, each group of silencing assemblies comprises an anti-surge valve and an emptying valve which are arranged in parallel, and the anti-surge valve and the emptying valve are connected with a silencer in series.
The invention can basically lead the spray gun weight of the Ausmelt furnace to automatically fall off by optimizing the process operation method, greatly reduces the cleaning time of the spray gun and improves the operation efficiency of the Ausmelt furnace.
Drawings
FIG. 1 is a block diagram showing the structural arrangement of the general embodiment of the present invention.
In the figure: 1-electric valve P, 2-manual valve M, 3-pneumatic valve Q.
Detailed Description
The invention relates to a process method for automatically dropping the weight of a spray gun of an Ausmelt furnace, which comprises spray gun air, sleeve air and heat preservation burner air, wherein the spray gun air supply pipe is connected with an oxygen pipe, the spray gun air supply pipe and the sleeve air supply pipe are introduced into a spray gun together, the heat preservation burner air supply pipe is introduced into a heat preservation burner, and the process for automatically dropping the weight of the spray gun comprises the following steps:
optimizing a pipeline: because the air quantity of the spray gun sleeve of the Ausmelt furnace is equivalent to that of the heat-preservation burner air, the sleeve air supply pipe and the heat-preservation burner air supply pipeline are communicated in parallel through an electric valve P1, a manual valve M2 is connected between the sleeve air supply pipe and the heat-preservation burner air supply pipeline, and the sleeve air fan and the heat-preservation burner air fan are in a one-use-one-standby state;
secondly, when the weight of the spray gun of the Ausmelt furnace exceeds the process standard, a pneumatic valve on an air supply pipe of the heat-preservation burner is opened, the air quantity in a sleeve air supply pipe of the emptying part is reduced, the air quantity of the sleeve air is reduced, and the temperature of the barrel body of the spray gun rises to expand for 2-3 min;
thirdly, in the time of reducing the air quantity of the sleeve, the gun position of the spray gun is reduced by 50-100 mm, the original gun position is recovered after the spray gun stays for 30s, and the operation is carried out for 2-3 times;
closing a pneumatic valve Q3 on the air supply pipe of the heat-preservation burner, recovering the air quantity of the sleeve, and cooling and shrinking the spray gun barrel;
lifting the gun position by 50-100 mm after the sleeve air volume is recovered, recovering the original gun position after the sleeve air volume is retained for 30s, and performing back and forth operation for 2-3 times;
sixthly, repeating the steps from the first step to the fifth step for a plurality of times until the spray gun falls off.
Further, in this embodiment, the air supply blower of the lance air is a 3K blower, the air supply blower of the sleeve air is a high-pressure blower of shenzhou drum group, and the air supply blower of the thermal insulation burner air is a high-pressure blower of shanxi drum group.
Furthermore, in this embodiment, the air supply fans corresponding to the spray gun air, the sleeve air and the heat preservation burner air are respectively provided with a silencing component, each group of silencing components comprises an anti-surge valve and an emptying valve which are arranged in parallel, and the anti-surge valve and the emptying valve are connected in series with a silencer.
The process of the present invention is further illustrated in the following examples with reference to specific applications:
(1) the Ausmelt furnace sleeve air, the spray gun air and the heat preservation burner air are respectively supplied with air by a high-pressure blower (hereinafter referred to as a sinking drum) of the sinking drum group, a 3K blower and a high-pressure blower (hereinafter referred to as a Shanxi drum) of the Shanxi drum group. During production, the emptying of the drum of the Shaan cannot be caused by the heat insulation burner wind; when the furnace is stopped, the sleeve air and the spray gun air are not used to cause the emptying of the 3K fan and the sinking drum; this also means that one of the sleeve air supply fan (sinking drum) and the heat-preservation burner air supply fan (shan drum) is in a standby state for a long time, the sleeve air flow rate is equivalent to the heat-preservation burner air flow rate, and the air supply rates of the two fans can meet the requirements of the sleeve air supply and the heat-preservation burner air supply, so that the sleeve air and the heat-preservation burner air pipeline are optimized in parallel connection, and the method is realized by the following steps, specifically referring to the attached drawing 1:
a. as shown in the attached figure 1, an electric valve P is additionally arranged between a sleeve air supply pipe and a heat-preservation burner air supply pipe, and two fan air supply pipes are connected in parallel.
b. And the drum-Shaan control program is merged into the sleeve wind control program, and the drum-Shaan control program is merged into the heat-insulating burner wind control program, so that the two fans are mutually standby.
c. Opening the drum of Shanxi, supplying heat-insulating burner air when the electric valve P is closed, and supplying sleeve air when the valve is opened; when the electric valve P is closed, sleeve air is supplied, and when the electric valve P is opened, burner air is supplied.
(2) During normal production, the Shenzhong drum is used as a spare fan, the Shanzhong drum is opened, the electric valve P is closed, the Shanzhong drum is used for supplying air for sleeve air, and the sleeve air quantity is 5000 and 7000 Nm/h.
When the weight of the spray gun of the Ausmelt furnace exceeds 18.5t, the Ausmelt furnace is mainly controlled to open a pneumatic valve Q, the opening degree is 90%, sleeve air is vented, the air quantity of a spray gun sleeve is reduced to 2000-3000 Nm/h, and the time is maintained for 2-3 min.
And secondly, reducing the gun position of the spray gun by 50-100 mm, recovering the original gun position after maintaining for 30s, and repeating the operation for 2-3 times.
And thirdly, closing the pneumatic valve Q by the main control system of the Ausmelt furnace, and recovering the sleeve air volume to 5000 and 7000Nm year/h.
And fourthly, lifting the main control gun position of the Ausmelt furnace by 50-100 mm, recovering the original gun position after 30s, and repeating the operation for 2-3 times.
And fifthly, repeating the operations from the first step to the fourth step for a plurality of times if the gun is heavy and does not fall off.
The method for optimizing the process operation can basically enable the spray gun weight of the Ausmelt furnace to automatically fall off, greatly reduce the cleaning time of the spray gun and improve the operation efficiency of the Ausmelt furnace.
In the above implementation, the arrangement and connection of the relevant valves on each air duct can be specifically seen in the detailed schematic diagram of fig. 1, and the valves at different positions and different numbers in the diagram are also the common necessary connection component structures on each air supply duct of the existing austempered air supply furnace.
Claims (3)
1. The process method for automatically dropping the gun weight of the spray gun of the Ausmelt furnace comprises spray gun air, sleeve air and heat preservation burner air, wherein an oxygen pipe is incorporated into the spray gun air supply pipe, the spray gun air supply pipe and the sleeve air supply pipe are introduced into the spray gun together, and the heat preservation burner air supply pipe is introduced into a heat preservation burner, and is characterized in that: the automatic falling process of the gun weight of the spray gun comprises the following steps:
optimizing a pipeline: because the air quantity of sleeve air and heat-preservation nozzle air of the spray gun of the Ausmelt furnace is equivalent, a sleeve air supply pipe and a heat-preservation nozzle air supply pipeline are communicated in parallel through an electric valve P, a manual valve M is connected between the sleeve air supply pipe and the heat-preservation nozzle air supply pipeline, and the sleeve air fan and the heat-preservation nozzle air fan are in a one-use one-standby state;
secondly, when the weight of the spray gun of the Ausmelt furnace exceeds the process standard, a pneumatic valve on an air supply pipe of the heat-preservation burner is opened, the air quantity in a sleeve air supply pipe of the emptying part is reduced, the air quantity of the sleeve air is reduced, and the temperature of the barrel body of the spray gun rises to expand for 2-3 min;
thirdly, in the time of reducing the air quantity of the sleeve, the gun position of the spray gun is reduced by 50-100 mm, the original gun position is recovered after the spray gun stays for 30s, and the operation is carried out for 2-3 times;
closing a pneumatic valve Q on the air supply pipe of the heat-preservation burner, recovering the air quantity of the sleeve, and cooling and shrinking the spray gun barrel;
lifting the gun position by 50-100 mm after the sleeve air volume is recovered, recovering the original gun position after the sleeve air volume is retained for 30s, and performing back and forth operation for 2-3 times;
sixthly, repeating the steps from the first step to the fifth step for a plurality of times until the spray gun falls off.
2. The process of claim 1, wherein the Ausmelt furnace lance weight automatically drops off, the process comprising: the air supply fan of the spray gun air adopts a 3K fan, the air supply fan of the sleeve air adopts a high-pressure blower of a sinking drum group, and the air supply fan of the heat preservation nozzle air adopts a high-pressure blower of a Shanxi drum group.
3. The process of claim 1, wherein the Ausmelt furnace lance weight automatically drops off, the process comprising: the air supply fans corresponding to the spray gun air, the sleeve air and the heat preservation burner air are respectively provided with a silencing assembly, each group of silencing assemblies respectively comprises an anti-surge valve and an emptying valve which are arranged in parallel, and the anti-surge valve and the emptying valve are connected with a silencer in series.
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| CN111926280B (en) * | 2020-09-03 | 2021-09-14 | 昆明理工大学 | High-entropy alloy coating of long-life spray gun for Isa smelting and preparation method thereof |
| CN114504938B (en) * | 2022-01-28 | 2023-12-12 | 大冶有色金属有限责任公司 | Spray gun protection method for continuous refining furnace |
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| DE1771489A1 (en) * | 1967-08-09 | 1971-12-09 | Hommel Co O | Body covered with glass |
| JPH0313518A (en) * | 1989-06-12 | 1991-01-22 | Aichi Steel Works Ltd | Method for repairing electric furnace having stamp mateiral layer |
| CN102747235B (en) * | 2012-07-31 | 2014-04-02 | 大冶有色金属有限责任公司 | Method for smelting and producing copper by spray gun adhering slag type Ausmelt furnace |
| ITUD20120158A1 (en) * | 2012-09-13 | 2014-03-14 | Danieli Off Mecc | APPARATUS AND METHOD FOR THE TREATMENT OF METALLURGICAL SCORES |
| CL2013001568U1 (en) * | 2013-05-31 | 2013-12-13 | Shandong Fargyuan Non Ferrous Science And Technology Ltd Company | A copper melting furnace for lower blown with enriched oxygen comprises a furnace body with an inner chamber and partition, at least one feed inlet, a smoke outlet, a slag outlet, a slag outlet, at least one side hole for spray guns, at least one bottom hole for spears, at least one oxygen lance and at least one spray gun. |
| CN103882244B (en) * | 2014-04-09 | 2015-09-02 | 重庆广播电视大学 | Oxygen-enriched air converting devices and methods therefor |
| CN104928474B (en) * | 2015-07-08 | 2017-03-01 | 吉林吉恩镍业股份有限公司 | A kind of method extending Ausmelt furnace spray gun service life |
| CN204848970U (en) * | 2015-07-16 | 2015-12-09 | 吉林吉恩镍业股份有限公司 | Australia si maite stove spray gun counter weight device |
| JP3213241U (en) * | 2017-08-16 | 2017-10-26 | 唐山正豊鋼鉄有限公司 | Out-of-furnace molten steel dephosphorization system |
| CN108588441A (en) * | 2018-03-30 | 2018-09-28 | 东营方圆有色金属有限公司 | A kind of pyrogenic process whole process cleaning copper smelting device and technique |
| CN108642233B (en) * | 2018-05-11 | 2019-10-29 | 鞍钢股份有限公司 | A method of improving the converter oxygen gun service life |
| CN209243129U (en) * | 2018-11-09 | 2019-08-13 | 河南万达铝业有限公司 | Smelting furnace is used in a kind of processing of aluminium sheet |
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