CN101775607A - Forced circulation pickling method of copper and copper alloy tubes, rods and wires - Google Patents
Forced circulation pickling method of copper and copper alloy tubes, rods and wires Download PDFInfo
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- CN101775607A CN101775607A CN201010101707A CN201010101707A CN101775607A CN 101775607 A CN101775607 A CN 101775607A CN 201010101707 A CN201010101707 A CN 201010101707A CN 201010101707 A CN201010101707 A CN 201010101707A CN 101775607 A CN101775607 A CN 101775607A
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Abstract
The invention discloses a forced circulation pickling method process of copper and copper alloy tubes, rods and wires, comprising the following steps: preparing pickling liquor in an acid preparation tank, stirring the pickling liquor in a mechanical or circular flow manner and sending the pickling liquor to a circulation tank after stirring; firstly heating the pickling liquor in the circulation tank by a heat exchanger and then circulating the pickling liquor under the action of a circulation pump, and transferring the pickling liquor to a pickling tank after the temperature uniformity meets the use requirement of the process; and forming turbulent flow by forcing the pickling liquor to flow circularly between the circulation tank and the pickling tank to realize relative movement of the pickling liquor and the copper products so as to ensure the pickling liquor to be fully contacted with the surfaces of the copper products to the greatest extent and achieve the effects of uniform pickling and acceleration of pickling, wherein the pickling tank is provided with a movable cover to ensure the copper products to under pickling in relatively sealed space. Acid preparation, circulation and pickling are all carried out in the relatively sealed space, thus the acid mist no longer diffuses toward the workshop but is sent to an acid mist purification tower through an air duct to be subjected to neutralization treatment, thereby effectively protecting the environment.
Description
Technical field
The present invention relates to the acid washing method of a kind of copper and copper alloy, especially the forced cyclic type acid washing method of copper and copper-alloy pipe-material, bar and wire rod.
Background technology
In the production process of copper and Cu alloy material, after hot-work (comprising hot rolling, extruding, non-protective thermal treatment etc.), need to adopt the pickling mode to remove the zone of oxidation of remained on surface.The pickling mode has through type and non-through type: quantity-produced copper strips etc. can be selected the surperficial continuous wash machine row of through type for use, and level of automation and production efficiency are all higher; And adopt tubing, bar and the wire rod of " extruding-rolling " explained hereafter, because the discontinuity of producing can only be selected simple pickling tank group at present for use, carry out pickling with the method for non-through type.When selecting the pickling of pickling tank group for use,, hang in the pickling tank, after soaking 10-30min in the pickle solution of heating, taking out, carry out cold and hot washing subsequently, clean with water and dry with crane with need the pipe rod wire rod etc. of pickling to be contained in the special-purpose charging basket or suspender belt in batches.During pickling, way in the past is the pickling tank opened upper end, so that often rock copper material with external force, makes pickling even, accelerates pickling speed, shortens the pickling time.Because pickling tank opened upper end, can not seal, acid solution constantly is dispersed in the workshop because of the acid mist (the NOx oxynitride that produces when especially pickle solution contains nitric acid) that the volatilization of being heated produces in complex acid and acid cleaning process, pollute workshop air, influence and infringement personnel are healthy, simultaneously production unit and factory building are caused corrosion.Therefore, how carrying out non-through type pickling in the space of relative closure, reduce or eliminate distributing of acid mist, and improve pickling efficient, is the problem that copper and copper alloy tube rod wire production need solve.
Summary of the invention
The object of the present invention is to provide the forced circulation pickling technology of a kind of copper and copper alloy tube rod wire rod.This technology can realize that copper and copper alloy tube rod wire rod carries out pickling in the space of relative closure, does not need it is rocked, but flows by the pump circulation of pickle solution, forms turbulent flow, and reach pickling evenly, accelerate pickling speed and reduce the effect of acid mist.
Technical scheme of the present invention is: the forced circulation pickling method technology of a kind of copper and copper alloy tube rod wire rod, be by forcing pickle solution to circulate, realize the relative movement between pickle solution and the copper material, pickle solution is fully contacted with the copper material surface, and the acid mist that complex acid, circulation, each link of pickling produce in this process is delivered to the acid mist scavenging tower by ventilator trunk and is carried out neutralizing treatment.
The equipment that adopts comprises complex acid jar, circulation tank, pickling tank, recycle pump, interchanger, strainer; Circulation tank forms the partial circulating loop by pipeline and recycle pump, switching valve, interchanger; Circulation tank, recycle pump, interchanger, pickling tank, strainer, circulation tank are in turn connected to form the systemic circulation loop.Removable cover is set on pickling tank.
The forced circulation pickling method technology of described copper and copper alloy tube rod wire rod, its step: preparating acid washing lotion in the complex acid jar, the mode that adopts mechanical stirring or circulate stirring stirs, deliver to circulation tank after the stirring, the pickle solution in the circulation tank is transported in the pickling tank after circulation is heated 50-60 ℃; By forcing pickle solution between circulation tank and pickling tank, to circulate, realize the relative movement between pickle solution and the copper material, pickle solution is fully contacted with the copper material surface, reach the effect that pickling is even, accelerate pickling speed.
In the complex acid jar, inject clear water and concentrated acid, sulfuric acid or nitric acid,, adopt machinery or the mode that circulates stirs, be transported to circulation tank after evenly according to the certain proportion configuration pickle solution that acid cleaning process requires.Pickle solution in the circulation tank heats by interchanger earlier under the effect of recycle pump, and circulate between circulation tank and interchanger (partial circulating); Temperature is transported in the pickling tank after reaching the technology service requirements again.Pickle solution constantly circulates and filters between pickling tank and circulation tank, realizes stable cycle pickling (systemic circulation).Pickling tank is provided with removable cover, needs the copper material of pickling to send into removable cover on the pickling tank bonnet, is implemented in the space of relative closure to carry out pickling, and blower fan extracts the acid mist that produced and at any time with its discharge.Pickling tank is established acid inlet, is returned acid mouth, overflow port and ventilation opening, pickle solution flows to pickling tank from acid inlet, return circulation tank from going out an acid mouthful outflow, pump circulation flows under the effect of recycle pump, form turbulent flow, realize the relative movement between pickle solution and the copper material, fully contact with the copper material surface to greatest extent, reach the effect that pickling is even, accelerate pickling speed.The acid mist that produces in complex acid and circulation, the acid cleaning process pumps to the acid mist scavenging tower with blower fan and handles qualified discharge.
The invention has the advantages that: the complex acid jar that is configured in of pickle solution carries out for 1 li, has replaced in the pickling tank that opens wide to dispose, and acid mist that produces because of chemical reaction during complex acid and hot gas can not distribute in the workshop; Being provided with of complex acid jar can be away from pickling tank, even can be arranged on outside the workshop.Replace copper material rocking in pickling tank with pickle solution circulating between circulation tank and pickling tank, make pickling in the space of relative closure, to operate.Pickling tank is provided with removable cover, except sending into and the short period of time open when taking out copper material removable cover, all closes removable cover At All Other Times, significantly reduces the acid mist that pickling tank distributes in the workshop, thereby reduces the harm of acid mist to personnel, equipment and factory building.Close removable cover during pickling, completely cut off mixing of air and acid mist, the acid mist flow that extracts by ventilation opening obviously reduces, the concentration height, can reduce the treatment capacity of blower fan and acid mist scavenging tower, cuts down the consumption of energy, and improves purification efficiency, saves facility investment.Can be on circulation tank or circulating line the concentration and the loss of online detection pickle solution, in time replenish and regulate pickle solution, guarantee pickling quality.
Description of drawings
Fig. 1 is the forced circulation pickling method process flow sheet of copper of the present invention and copper alloy tube rod wire rod.
Among the figure: 1-complex acid jar, 2-recycle pump, 3-circulation tank, 4-interchanger, 5-pickling tank, 6-strainer, 7-switching valve, 8-blower fan, 9-acid mist scavenging tower, NS-concentrated acid, the new water of XS-, SW-acid mist, ZQ-steam.
Embodiment
The acid cleaning process of a kind of copper and copper alloy tube rod wire rod, this technology is made up of operations such as complex acid, circulation heating, cycle picklings, and equipment comprises complex acid jar 1, circulation tank 3, pickling tank 5, recycle pump 2, interchanger 4, switching valve 7.Complex acid the sealing the complex acid jar carry out for 1 li, dispose in proportion and stir after be transported to circulation tank 3 again.Complex acid is to be interrupted operation, and overlap the cycle pickling system can a shared complex acid jar 1 more.Circulation tank 3 forms the partial circulating loop by pipeline and switching valve 7 with interchanger 4, realizes the circulation heating; Circulation tank 3 forms the systemic circulation loop by pipeline and switching valve 7 with interchanger 4, pickling tank 5, strainer 6, realizes cycle pickling.The heating of pickle solution is finished in the partial circulating loop; Pickle solution is heated to (50-60 ℃) after the needed temperature of acid cleaning process, and interchanger stops heating, switches by valve pickle solution is circulated in the systemic circulation loop, carries out pickling; In the cycle pickling process, when being lower than under the design temperature, the pickle solution temperature prescribes a time limit, and can start interchanger pickle solution is heated.Need the pipe rod wire rod etc. of pickling to be contained in the special-purpose charging basket or suspender belt in batches, send into pickling tank 5 with crane after opening removable cover, be immersed in the pickle solution that circulates, close removable cover then.Pickle solution flows to from the acid inlet of pickling tank 5 bottoms, mouthful flow out from the acid of returning on top, go out on advancing down at the flowing-path of 5 li of pickling tanks, the right side enters a left side and go out, and forms turbulent, fully contact with the copper material surface to greatest extent, reach the effect of removing the remained on surface zone of oxidation.Open removable cover after soak acid-cleaning 10-30 minute, the cold and hot washing step in road is delivered to down in the copper material taking-up of pickling, and the next batch copper material is sent into pickling tank 5, carry out next batch pickling operation, so constantly cyclical operation.Through solids such as filter 6 elimination copper scales, flow back to circulation tank 3 from pickling tank 5 effusive pickle solutions, circulation is used repeatedly.On 3 li of circulation tanks or circulating line, can be arranged on line detector, in acid cleaning process, can detect the loss and the change in concentration of pickle solution at any time, and, guarantee that pickle solution satisfies the requirement of acid cleaning process all the time according to detected result supplemental acid washing lotion.On complex acid jar 1, circulation tank 3, pickling tank 5 tops ventilation opening is set all, collects the acid mist that is produced, it is pumped to the acid mist scavenging tower with blower fan by ventilator trunk carry out neutralizing treatment, qualified discharge.
Claims (4)
1. the forced circulation pickling method technology of copper and copper alloy tube rod wire rod, be by forcing pickle solution to circulate, realize the relative movement between pickle solution and the copper material, pickle solution is fully contacted with the copper material surface, and the acid mist that complex acid, circulation, each link of pickling produce in this process is delivered to the acid mist scavenging tower by ventilator trunk and is carried out neutralizing treatment.
2. the forced circulation pickling method technology of copper according to claim 1 and copper alloy tube rod wire rod, it is characterized in that: the equipment of employing comprises complex acid jar (1), circulation tank (3), pickling tank (5), recycle pump (2), interchanger (4), strainer (6); Circulation tank (3) forms the partial circulating loop by pipeline and recycle pump (2), switching valve (7), interchanger (4); Circulation tank (3), recycle pump (2), interchanger (4), pickling tank (5), strainer (6), circulation tank (3) are in turn connected to form the systemic circulation loop.
3. the forced circulation pickling method technology of copper according to claim 1 and copper alloy tube rod wire rod, its step: in complex acid jar (1) lining preparating acid washing lotion, the mode that adopts mechanical stirring or circulate stirring stirs, deliver to circulation tank (3) after the stirring, the pickle solution of circulation tank (3) lining is transported in the pickling tank (5) after circulation is heated 50-60 ℃; By forcing pickle solution between circulation tank (3) and pickling tank (5), to circulate, realize the relative movement between pickle solution and the copper material, pickle solution is fully contacted with the copper material surface, reach the effect that pickling is even, accelerate pickling speed.
4. the forced circulation pickling method technology of copper according to claim 2 and copper alloy tube rod wire rod is characterized in that: on pickling tank (5) removable cover is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101707A CN101775607A (en) | 2010-01-27 | 2010-01-27 | Forced circulation pickling method of copper and copper alloy tubes, rods and wires |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101707A CN101775607A (en) | 2010-01-27 | 2010-01-27 | Forced circulation pickling method of copper and copper alloy tubes, rods and wires |
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| CN201010101707A Pending CN101775607A (en) | 2010-01-27 | 2010-01-27 | Forced circulation pickling method of copper and copper alloy tubes, rods and wires |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914778A (en) * | 2010-08-11 | 2010-12-15 | 昆明理工大学 | Microwave heating device for heating cold-rolling pickling process medium |
| CN101935845A (en) * | 2010-08-19 | 2011-01-05 | 昆明理工大学 | Method for heating titanium strip cleaning acid liquor by using microwave heater |
| CN102330100A (en) * | 2011-07-01 | 2012-01-25 | 云南钛业股份有限公司 | Acid washing method for titanium belts |
| CN102337548A (en) * | 2011-09-14 | 2012-02-01 | 西部钛业有限责任公司 | Acid washing method of titanium and zirconium materials without acid-free fog |
| CN103451669A (en) * | 2013-08-19 | 2013-12-18 | 浙江大学 | Pickling liquid circulated stainless steel pickling mist inhibition system and pickling process thereof |
| CN103710721A (en) * | 2013-12-03 | 2014-04-09 | 中国石油集团渤海钻探工程有限公司 | Cleaning method for U-shaped tube densimeter of petroleum cementing truck |
| CN105506664A (en) * | 2015-12-08 | 2016-04-20 | 松阳上上德盛不锈钢有限公司 | Stainless steel tube acid pickling process making acid solutions self-circulated and washing water recyclable |
| CN105714492A (en) * | 2016-03-08 | 2016-06-29 | 宿迁市高烁复合材料有限公司 | High-silica glass fiber cloth washing tank |
| CN106011905A (en) * | 2016-07-19 | 2016-10-12 | 尚成荣 | Automatic solution supplementing type surface acid pickling device for composite copper wires |
| CN106521524A (en) * | 2016-11-28 | 2017-03-22 | 太原钢铁(集团)有限公司 | Method for enhancing acid pickling efficiency of stainless steel tubes |
| CN107034477A (en) * | 2017-05-19 | 2017-08-11 | 六安维奥智能科技有限公司 | A kind of fastener stock pickling tube |
| CN107513720A (en) * | 2017-09-29 | 2017-12-26 | 温州宪江防腐设备有限公司 | A kind of closed pickling system and its acid washing method |
| CN107829102A (en) * | 2017-12-20 | 2018-03-23 | 中国二冶集团有限公司 | Circulating pickling device and method for carbon steel piping |
| CN111364046A (en) * | 2020-03-16 | 2020-07-03 | 宁夏中色金航钛业有限公司 | Bright pickling method and pickling solution for rare metal and alloy processing material thereof |
| CN111621794A (en) * | 2020-06-30 | 2020-09-04 | 江苏常宏玻璃钢有限公司 | Steel surface pickling processing system |
| CN113667988A (en) * | 2021-07-06 | 2021-11-19 | 江苏兴隆防腐设备有限公司 | Multifunctional pickling device with circulating pickling solution |
-
2010
- 2010-01-27 CN CN201010101707A patent/CN101775607A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101914778A (en) * | 2010-08-11 | 2010-12-15 | 昆明理工大学 | Microwave heating device for heating cold-rolling pickling process medium |
| CN101914778B (en) * | 2010-08-11 | 2012-01-25 | 昆明理工大学 | Microwave heating device for heating cold-rolling pickling process medium |
| CN101935845A (en) * | 2010-08-19 | 2011-01-05 | 昆明理工大学 | Method for heating titanium strip cleaning acid liquor by using microwave heater |
| CN102330100A (en) * | 2011-07-01 | 2012-01-25 | 云南钛业股份有限公司 | Acid washing method for titanium belts |
| CN102337548A (en) * | 2011-09-14 | 2012-02-01 | 西部钛业有限责任公司 | Acid washing method of titanium and zirconium materials without acid-free fog |
| CN102337548B (en) * | 2011-09-14 | 2012-12-05 | 西部钛业有限责任公司 | Acid washing method of titanium and zirconium materials without acid-free fog |
| CN103451669A (en) * | 2013-08-19 | 2013-12-18 | 浙江大学 | Pickling liquid circulated stainless steel pickling mist inhibition system and pickling process thereof |
| CN103451669B (en) * | 2013-08-19 | 2015-06-17 | 浙江大学 | Pickling liquid circulated stainless steel pickling mist inhibition system and pickling process thereof |
| CN103710721A (en) * | 2013-12-03 | 2014-04-09 | 中国石油集团渤海钻探工程有限公司 | Cleaning method for U-shaped tube densimeter of petroleum cementing truck |
| CN103710721B (en) * | 2013-12-03 | 2015-09-30 | 中国石油集团渤海钻探工程有限公司 | A kind of purging method of Cementing cementing truck U-shaped tube densimeter |
| CN105506664A (en) * | 2015-12-08 | 2016-04-20 | 松阳上上德盛不锈钢有限公司 | Stainless steel tube acid pickling process making acid solutions self-circulated and washing water recyclable |
| CN105714492A (en) * | 2016-03-08 | 2016-06-29 | 宿迁市高烁复合材料有限公司 | High-silica glass fiber cloth washing tank |
| CN106011905A (en) * | 2016-07-19 | 2016-10-12 | 尚成荣 | Automatic solution supplementing type surface acid pickling device for composite copper wires |
| CN106521524A (en) * | 2016-11-28 | 2017-03-22 | 太原钢铁(集团)有限公司 | Method for enhancing acid pickling efficiency of stainless steel tubes |
| CN107034477A (en) * | 2017-05-19 | 2017-08-11 | 六安维奥智能科技有限公司 | A kind of fastener stock pickling tube |
| CN107513720A (en) * | 2017-09-29 | 2017-12-26 | 温州宪江防腐设备有限公司 | A kind of closed pickling system and its acid washing method |
| CN107829102A (en) * | 2017-12-20 | 2018-03-23 | 中国二冶集团有限公司 | Circulating pickling device and method for carbon steel piping |
| CN111364046A (en) * | 2020-03-16 | 2020-07-03 | 宁夏中色金航钛业有限公司 | Bright pickling method and pickling solution for rare metal and alloy processing material thereof |
| CN111364046B (en) * | 2020-03-16 | 2023-10-31 | 宁夏中色金航钛业有限公司 | Brightening pickling method for rare metal and alloy processing material thereof and pickling solution |
| CN111621794A (en) * | 2020-06-30 | 2020-09-04 | 江苏常宏玻璃钢有限公司 | Steel surface pickling processing system |
| CN113667988A (en) * | 2021-07-06 | 2021-11-19 | 江苏兴隆防腐设备有限公司 | Multifunctional pickling device with circulating pickling solution |
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Open date: 20100714 |