CN110284009B - Copper matte converting method and equipment - Google Patents
Copper matte converting method and equipment Download PDFInfo
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- CN110284009B CN110284009B CN201910568198.6A CN201910568198A CN110284009B CN 110284009 B CN110284009 B CN 110284009B CN 201910568198 A CN201910568198 A CN 201910568198A CN 110284009 B CN110284009 B CN 110284009B
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- 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
- C22B15/003—Bath smelting or converting
- C22B15/0041—Bath smelting or converting in converters
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Abstract
The invention discloses a copper matte converting method and equipment, wherein the copper matte converting method comprises the following steps: feeding, namely adding copper matte generated by a smelting furnace into the converter through a feeding hole formed in the end wall of the converter at one time, and closing the feeding hole; and an air refining step, air refining the copper matte in the converter, adding the cold copper required in the air refining process into the converter from a furnace mouth through a stub feeder, and shaking the converter to discharge the copper after air refining is finished. The copper matte converting method provided by the invention continuously discharges the copper matte required in the converting process into the converter from the feed inlet arranged on the end wall of the converter at one time, thereby solving the problems of frequent furnace shaking and serious low-altitude pollution in the prior art.
Description
Technical Field
The invention relates to the field of copper pyrometallurgy, in particular to a copper matte converting method and equipment.
Background
The global copper smelting development is rapid, and smelting enterprises have to adapt to the change of raw materials due to the shortage of the raw materials, which is mainly reflected in that the proportion of high-impurity raw materials in the raw materials is higher and higher; meanwhile, the processing capacity of the high-impurity raw materials becomes a judgment standard for the profit of copper smelting enterprises. The raw material composition of the copper concentrate is increasingly complex, and the impurity elements of the crude copper are higher and higher, mainly due to the increase of the contents of Pb, As, Sb, Bi and Ni; the quality of the final product of copper pyrometallurgical smelting is seriously influenced, so that the quality fluctuation of the anode copper is large, and the stability of the cathode copper is influenced. The quality of the anode copper directly influences the quality of the cathode copper and various economic and technical indexes of the electrolysis process; meanwhile, a large amount of unqualified anode copper needs to be subjected to furnace returning treatment, so that the refining processing cost of the pyrometallurgical refining process is increased, and the refining loss of metals such as copper, gold, silver and the like is caused.
The blowing process of the copper matte is intermittent periodic operation, and the whole process can be divided into two stages of a slagging stage and a copper making stage. In the first stage of converting, FeS in the copper matte is strongly oxidized with oxygen in the blown air or oxygen-enriched air, and FeS in the copper matte is oxidized into FeO and SO2. FeO added with the flux can react with SiO in the flux2The reaction is carried out for slagging, so that the copper content in the matte is gradually increased. Because the mutual solubility of the copper matte and the slag is very small and the densities are different, the melt is divided into two layers when the blowing is stopped, and the slag on the upper layer is discharged periodically. The first stage of copper matte converting is characterized by the production of a large amount of slag and is therefore also referred to as the slagging stage. In the second stage of the converting, oxygen and Cu in the air are blown in2S is strongly oxidized to generate Cu2O and SO2，Cu2O with unoxidized Cu2S reacts to generate metal Cu and SO2. In the second stage of copper matte blowing, no flux is added, no slag is formed, and the characteristics of producing crude copper are also called as copper forming period.
The currently adopted P-S converter (Pierce-Smith converter) side blowing converting process can better adapt to the change of raw materials, the product quality meets the control requirement, and compared with a bottom blowing converting furnace and a multi-gun top blowing converting furnace, the side blowing converting furnace has the advantages of simple operation, more cold material treatment, strong impurity removal capability and the like. But due to its operating mode of intermittent operation, it is fed in stages in a cycle, resulting in frequent rocking of the furnace; meanwhile, in order to consider the space requirement of crane feeding, the design of the smoke hood of the crane cannot realize effective sealing; the low-altitude pollution is serious due to frequent blowing and rocking of the P-S converter and poor sealing performance of a smoke hood, and the requirements of environment-friendly production cannot be met.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a copper matte converting method and equipment, and aims to solve the problems of frequent furnace shaking and serious low-altitude pollution caused by the adoption of an operation mode of discontinuous operation in the conventional converting process.
A copper matte converting process, comprising:
feeding, namely adding copper matte generated by a smelting furnace into the converter through a feeding hole formed in the end wall of the converter at one time, and closing the feeding hole;
and an air refining step, air refining the copper matte in the converter, adding the cold copper required in the air refining process into the converter from a furnace mouth through a stub feeder, and shaking the converter to discharge the copper after air refining is finished.
The copper matte converting method, wherein the copper matte flows from the smelting furnace through a chute into the feed opening.
The copper matte converting method comprises the step of feeding copper matte, wherein in the step of feeding, the feeding amount of the copper matte is 180-190 t.
The copper matte converting method is characterized in that in the feeding step, the feeding frequency is 4 h/furnace.
The copper matte converting method is characterized in that in the feeding step, the copper content (mass percentage of copper element in the copper matte) of the copper matte is 70-72%.
The copper matte converting method comprises the step of converting, wherein in the converting step, the air supply rate is 18000-30000Nm3/h。
The copper matte converting method is characterized in that in the converting step, the feeding amount of the cold copper is 90-110 t.
The copper matte converting method comprises the step of converting, wherein in the converting step, the converting time is 200-220 min.
The copper matte converting method comprises the following steps:
while the first converter is performing the feeding step, the second converter is performing the converting step;
the first converter performs the feeding step while the second converter performs the converting step.
A copper matte converting apparatus, comprising:
the converter comprises a converter body, a feed inlet arranged on the end wall of the converter body and a sealing door arranged at the feed inlet;
the converter body is a P-S converter;
the copper matte converting plant is arranged to carry out the copper matte converting method as described above.
Has the advantages that:
1. according to the copper matte converting method, the copper matte required in the converting process is continuously discharged into the converter at one time, so that single-furnace continuous converting of the converter is realized, and the furnace swinging operation in the converting process is avoided;
2. according to the copper matte converting method, feeding is not needed through a crane, and the optimized design of the airtightness of the converter environment-friendly smoke collection system is facilitated, so that the smoke is further effectively collected;
3. the copper matte converting method provided by the invention reserves the characteristics of high cooling rate, high impurity removal efficiency, strong adaptability and flexible operation of the original P-S converter.
Drawings
Fig. 1 is a schematic perspective view of the copper matte converting apparatus of the present invention.
Detailed Description
The present invention provides a copper matte converting method and apparatus, and the present invention is further described in detail below in order to make the purpose, technical scheme and effect of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the prior art, because the blowing process of the converter is intermittent periodic operation, the output flue gas quantity and the concentration of sulfur dioxide in the flue gas fluctuate in a large range, and great troubles are brought to the acid making process. In addition, due to feeding and slag discharging operations in the blowing process, flue gas is dissipated to workshops, and the production labor environment is worsened. Aiming at the problem of low-altitude pollution caused by frequent furnace swinging and feeding operation in the existing P-S converter blowing process, the invention aims to provide a novel copper matte blowing method and equipment, which aim to keep the advantages of the original P-S converter blowing process and solve the problem of low-altitude pollution caused by frequent furnace swinging and feeding operation in the existing process on the basis of providing high-grade matte (copper matte) in a pyrometallurgical smelting process.
The invention provides a copper matte converting method, which comprises the following steps:
feeding, namely adding copper matte generated by a smelting furnace into the converter through a feeding hole formed in the end wall of the converter at one time, and closing the feeding hole;
and an air refining step, air refining the copper matte in the converter, adding the cold copper required in the air refining process into the converter from a furnace mouth through a stub feeder, and shaking the converter to discharge the copper after air refining is finished.
Compared with the prior art, the copper matte converting method has the advantages that the feeding port arranged on the end wall of the converter is used for one-time continuous feeding, so that the problem of frequent furnace swinging caused by intermittent periodic operation is avoided; meanwhile, the invention does not need to adopt a crane for feeding, thereby realizing the optimized design of the smoke hood seal. Therefore, the copper matte converting method can solve the problem of low-altitude pollution caused by frequent furnace shaking and poor sealing property, and is an efficient and environment-friendly converting process technology.
Specifically, the copper matte converting method comprises the following steps:
A. copper-containing matte (copper matte) produced by a copper smelting furnace is discharged into the converter through a closed chute and a feeding hole arranged on the end wall of the converter in sequence, the copper matte amount required by converting is finished at one time, and a sealing door of the feeding hole is closed;
B. carrying out converting operation, wherein the copper-containing material and the flux required in the converting process are respectively added into the converter through a stub feeder and a flux adding system in the converting process;
C. and automatically judging the end point of the blister copper through an end point judging system, dumping the blister copper produced in the converter into a blister copper pack through a furnace mouth when the blister copper is blown to the end point, and conveying the blister copper to a fire refining area through a copper conveying trolley to carry out anode furnace fire refining.
The invention relates to a copper matte converting method, in particular to an improved process based on a P-S converter side blowing converting process. Copper matte converting refers to a pyrometallurgical copper smelting process in which molten copper matte is subjected to oxidation slagging to remove sulfur and iron to produce blister copper. The copper matte converting process is mostly carried out in a horizontal converter (PS converter). The middle part of the converter body is provided with a furnace mouth, and one side of the converter body is provided with an air outlet along the horizontal direction for blowing compressed air or oxygen-enriched air. The P-S converter side blowing process is a production process for obtaining crude copper by blowing air or oxygen-enriched air into a converter, stirring a melt in the converter and carrying out a physical and chemical reaction with the melt.
The anode scrap feeder mainly comprises a frame, a hydraulic system, a shaping device, a chain plate conveyor, a furnace throwing device, a lifting and pushing device, a tilting chute, a head device, a tail wheel device and a detector. Specifically, the cold copper is obliquely and upwards conveyed to a charging opening of the converter by a chain plate conveyor, and after a furnace door is lifted, a residual anode stack is pushed by a hydraulic push rod to be thrown into the converter. The anode scrap feeder continuously feeds the anode scrap into the converter at any time under the condition of not stopping air, improves the production efficiency of the converter, reduces the overflow of the flue gas of the converter, improves the field environment, and is beneficial to improving the concentration of the flue gas and producing acid.
The flux adding system is required to ensure timely supply, uniform feeding, convenient operation and accurate metering. The system is characterized in that a flux is added into a quartz bin by a roasting feeding belt and then is added into a converter from a converter mouth through a belt weigher and a quartz discharging pipe. During normal production, the start and stop of the belt weigher are controlled by a computer or a field start switch.
Preferably, the matte flows from the smelting furnace through a chute into the feed opening. That is, a chute is provided between the smelting furnace and the converter for feeding the copper matte in the smelting furnace into the converter, so that continuous feeding can be realized, and the operation of feeding from the furnace mouth through a crane is avoided.
In the step a, preferably, the copper matte is a high-grade copper matte, and the high-grade copper matte produced by a smelting furnace contains 70-72% of copper, which is beneficial to obtaining high-quality blister copper, reducing rework rate and reducing production cost.
In the step a, preferably, the feeding amount of the copper matte is 180-190 t. The invention can add 180-190t copper matte at one time, and the copper matte does not need to be added into the furnace in batches in the converting process.
In the step B, the air supply rate is controlled to be perfectly matched with the feeding rate and the furnace angle through a computer control system. Specifically, in the process of returning, the furnace is tilted from 65 degrees to 0 degrees, the depth of the air holes immersed into the melt is gradually increased, the air supply rate is gradually increased, and the air supply rate is controlled from 18000 Nm3Increasing the/h to 30000Nm3And the melt splashing in the converting process can be effectively reduced. In addition, the part of the air hole close to the end wall of the feeding port is plugged, namely a drill rod is inserted into the air hole to plug the air hole, so that compressed air cannot be blown into the air hole, and the side splashing of the end wall of the feeding port is controlled.
In the step B, the single-furnace cold copper treatment capacity is 90-110t, and cold copper is fed into the furnace through a stub feeder without shaking the furnace in the feeding process. The cold copper and the flux are added in the blowing period of the side blowing converting furnace through the feeding device. Specifically, cold copper is added into the converter in batches from the furnace mouth through a stub feeder, and the converter is not shaken when the cold copper is added into the converter in batches from the furnace mouth through the stub feeder. The single-furnace cold copper treatment method has the advantages of large treatment capacity of single-furnace cold copper and improvement on production efficiency.
In said step C, the amount of flue gas generated during the converting is about 64000 Nm3And h, the concentration of the flue gas is about 9.81%, the converting flue gas is effectively collected through a closed smoke collecting hood until the converting end point is reached, and copper is discharged by rocking the furnace.
Preferably, in the blowing process, the air supply rate is 18000-30000Nm3The oxygen supply amount is 800-1500 Nm3H, ensuring the converter reactionCompletely, the product quality of the blister copper is improved.
The copper matte converting method comprises the steps that cold copper is added into a converter from a furnace opening in batches through a stub feeder in the converting process, and the converter is not shaken when the cold copper is added into the converter from the furnace opening in batches through the stub feeder.
Preferably, the copper matte converting method comprises the following steps:
when the first converter is used for feeding, the second converter is used for blowing;
while the second converter is performing the converting step, the first converter is performing the feeding step.
In a preferred copper matte converting process, the invention is provided with two side converting furnaces (P-S converters) for alternate production. Specifically, the method for continuously producing the smelting furnace comprises the steps that the smelting furnace continuously produces copper matte according to a certain blanking amount, two side-blown converting furnaces are a first converter and a second converter, the first converter is in feeding operation (performing the feeding step), the second converter is in converting operation (performing the converting step), the second converter is in feeding operation after the converting operation of the second converter is finished, and the first converter is in converting operation, so that the copper matte can continuously flow into the side-blown converting furnaces, and the smelting furnace continuous production is realized. More specifically, in said step A, the feeding frequency was 4 h/furnace. That is, the time of one feed was 4 hours; the time of the blowing is 200-220 min. The feeding frequency and the converting time of the invention can meet the requirement that two side-blown converting furnaces alternately perform the feeding step and the converting step, thereby realizing the continuous production of the smelting furnace and improving the production efficiency.
The materials added into the converting furnace comprise copper matte and cold copper, the materials contain a certain amount of impurity elements such As Pb, As, Bi and the like, in the converting process, the impurity elements Pb, As and Bi are removed through slag formation and oxidation volatilization by reacting with a flux to obtain crude copper with lower impurity content, and the ratio of the impurity removal amount to the impurity content in the added substances in the process is the impurity removal rate. The copper matte converting method of the invention has the following impurity removal rate: the Pb removing rate can reach more than 55 percent, the As removing rate can reach more than 20 percent, and the Bi removing rate can reach more than 40 percent.
Referring to fig. 1, the present invention provides a copper matte converting apparatus, which includes:
the converter comprises a converter body 1, a feed inlet 2 arranged on the end wall of the converter body 1, and a sealing door arranged at the feed inlet 2;
the converter body 1 is a P-S converter;
the copper matte converting plant is arranged to carry out the copper matte converting method as described above.
Preferably, a 600mm by 600mm feed inlet 2 is arranged above 706mm as the center on the end wall of the converter body 1. Feed inlet 2 is square feed inlet, feed inlet 2 sets up in the first half region of headwall, reduces 2 department copper matte splash of feed inlet.
Preferably, the feed opening 2 is connected to the smelting furnace via a chute 3. Copper matte in the smelting furnace can be continuously conveyed into the converter through the chute 3, so that feeding by a crane is avoided.
Preferably, the feed inlet 2 is further provided with a smoke collecting device. The smoke collecting device is used for collecting smoke at the feed inlet, and further reduces air pollution.
The copper matte converting equipment can realize the copper matte converting method, namely, the copper matte is fed through the feed inlet 2 arranged on the end wall of the converter body 1, so that the problem of frequent furnace shaking is avoided, the quality of copper products is improved, and the problem of high rework rate is effectively reduced.
Specifically, the converter body 1 is composed of two main parts, namely a furnace base and a furnace body.
(1) Furnace foundation
The furnace foundation is formed by casting reinforced cement, foundation screws are arranged on the upper surface of the furnace foundation to fix the carrier roller chassis, and two pairs of carrier rollers are arranged on each side of the upper surface of the carrier roller chassis to support the mass of the furnace and enable the furnace to rotate on the carrier roller chassis.
(2) Furnace body
The furnace body comprises a furnace shell, a furnace opening, a guard plate, a backing ring, a large gear, a wind eye, a furnace lining and the like.
Furnace shell
The main body of the converter body is a furnace shell, the furnace shell is a cylinder formed by welding 40-50mm boiler steel plates, two ends of the cylinder are end covers, and the furnace shell is also made of steel plates with the same specification.
The furnace shell is provided with two large rings at two ends respectively, and the large rings are supported on the carrier rollers, and the carrier rollers are fixed on the furnace base through the chassis.
② furnace mouth
The center of the furnace shell is provided with a backward inclined furnace mouth which is rectangular or circular, and the area of the furnace mouth can account for 15-25 percent of the maximum horizontal plane of the molten pool, preferably about 20 percent.
③ protective board
The guard plate is welded around the furnace opening, and aims to protect a furnace shell near the furnace opening and air intake devices such as an annular air pipe and the like so as to prevent the furnace shell from being corroded by splashed melt. The furnace mouth guard plate should have sufficient length, width and thickness.
Roller ring
The rolling ring is supported by the riding wheel, and plays a role in rotating the furnace body and transferring and bearing the mass of the furnace body. The rolling ring of the converter has rectangular, box-shaped and I-shaped sections, and the copper converter adopts the I-shaped section.
Fifthly, the big gear
A large gear is arranged on a furnace shell at one side of the converter and is a driven wheel for rotating the converter, when a driving wheel motor rotates, a small gear is driven by a speed reducer, and the large gear is driven by the small gear to enable the converter to rotate in the forward and reverse directions of 360 degrees.
Wind eye
The air holes are specifically arranged below the rear side of the converter shell, 30-60 round holes are formed according to requirements, the air pipes penetrate through the round holes and are installed on the air boxes through threaded connection, and refractory bricks are built on the air pipe portions extending into the converter.
Seventh of the formula
The refractory material of the furnace lining in the furnace shell can be magnesium, chrome-magnesium and other refractory materials.
The technical solution of the present invention will be described below by specific examples.
Example 1
The copper matte converting equipment
An original P-S converter is reformed into novel copper matte converting equipment, a feed inlet 2 with the size of 600mm multiplied by 600mm is arranged above the center of a headwall of a P-S converter body and with the size of 706mm as the center (the position of 706mm above the center of a circular headwall), and a sealing door and a smoke collecting device are arranged at the feed inlet 2.
Be provided with chute 3 between feed inlet 2 and the smelting furnace for send the copper matte in the smelting furnace into the converter, wherein the one end that the chute is close to feed inlet 2 can be folded flexible, is convenient for after the feeding is accomplished, withdraws from feed inlet 2 with the chute, is convenient for close feed inlet 2.
The copper matte converting method of the embodiment comprises the following steps:
s1, enabling 72% of high-grade matte generated by the smelting furnace to flow into the furnace through the feeding chute 3 and the feeding hole 2, wherein the feeding amount is 180t, one-time continuous feeding is realized, and the feeding time is 4 h;
s2, starting air volume-furnace rocking angle linkage control, and setting air supply volume as 18000-30000Nm3The oxygen supply amount is 800-1500 Nm3Performing converting operation;
s3, adding 90-110t (for example, 100 t) of cold copper into the furnace in batches through a cold copper adding system according to the furnace temperature and the furnace condition in the blowing process, wherein the furnace is not shaken in the blowing process;
s4, in the blowing process, blowing flue gas is effectively collected through a closed smoke collecting hood until the blowing end point is reached, copper is discharged from a rocking furnace, and the blowing time is 200 min.
The detection shows that the Pb removal rate can reach 59.6 percent, the As removal rate can reach more than 33.2 percent, and the Bi removal rate can reach 43.1 percent.
Example 2
The copper matte converting equipment
This example comprises two parallel copper matte converting plants modified as described in example 1 of the present invention, namely a first converter and a second converter.
Chutes 3 are arranged between the first converter and the smelting furnace and between the second converter and the smelting furnace, that is, the same smelting furnace is respectively connected with the first converter and the second converter through two chutes 3.
The copper matte converting method of the embodiment comprises the following steps:
a first stage, a first converter: feeding is started in a first converter, high-grade matte (72%) generated by a smelting furnace flows into the first converter through a feeding chute 3, the feeding amount is 180t, one-time continuous feeding is realized, and the feeding time is 4 h;
a second converter: after the second converter finishes feeding, starting air quantity-furnace swinging angle linkage control, and setting the air supply quantity to be 18000-30000Nm3The oxygen supply amount is 800-1500 Nm3Performing converting operation; in the converting process, according to the furnace temperature and the furnace condition, adding 90t of cold copper into the furnace in batches through a cold copper adding system, wherein the furnace is not shaken in the converting process; in the converting process, converting flue gas is effectively collected through a closed smoke collecting hood until the converting end point is reached, discharging copper by rocking a furnace, and converting for 220 min.
Second stage, first converter: after the first converter finishes feeding, starting air quantity-furnace rocking angle linkage control, and setting the air supply quantity to be 18000-30000Nm3The oxygen supply amount is 800-1500 Nm3Performing converting operation; in the converting process, according to the furnace temperature and the furnace condition, adding 90t of cold copper into the furnace in batches through a cold copper adding system, wherein the furnace is not shaken in the converting process; in the converting process, converting flue gas is effectively collected through a closed smoke collecting hood until the converting end point is reached, discharging copper by rocking a furnace, and converting for 220 min;
a second converter: and the second converter starts feeding, and high-grade matte (72%) generated by the smelting furnace flows into the first converter through the feeding chute 3, the feeding amount is 180t, one-time continuous feeding is realized, and the feeding time is 4 h.
The invention adopts the side blowing converting process technology that the end wall continuously feeds and the flue gas in the feeding process is effectively collected and the converter is not shaken in the converting process, thereby not only keeping the advantages of strong adaptability of the raw materials of the original converter, large cold charge handling capacity and high impurity removal efficiency, but also solving the problem of flue gas escape in the converter shaking process of the original converter, realizing high-efficiency environment-friendly production, having simple equipment transformation and clear process flow, realizing the purpose of quickly reaching the production standard, having more prominent advantages for the future complicated raw material structure trend and having wide application prospect.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (7)
1. A copper matte converting method, comprising:
feeding, namely adding copper matte generated by a smelting furnace into the converter through a feeding hole formed in the end wall of the converter at one time, and closing the feeding hole;
the method comprises the steps of converting copper matte in a converter, wherein in the converting process, required cold copper is added into the converter in batches from a converter mouth through a stub feeder during converting of a side-blown converter, and the converter is not shaken when the cold copper is added into the converter, and copper is discharged by shaking the converter to the end point;
the feeding amount of the copper matte is 180-190t, and the feeding amount of the cold copper is 90-110 t;
in the blowing step, the air supply rate of the converter is 18000 and 30000Nm3The oxygen supply amount is 800-1500 Nm3/h。
2. The matte converting method according to claim 1, characterized in that the matte flows from the smelting furnace through a chute into the feed opening.
3. Copper matte converting method according to claim 1, characterized in that in the feeding step the feeding frequency is 4 h/furnace.
4. The copper matte converting method according to claim 1, characterized in that the copper content of the copper matte in the feeding step is 70-72%.
5. The copper matte converting method according to claim 1, characterized in that in the converting step, the converting time is 200-220 min.
6. A copper matte converting method according to claim 1, characterized by comprising:
while the first converter is performing the feeding step, the second converter is performing the converting step;
the first converter performs the feeding step while the second converter performs the converting step.
7. A copper matte converting apparatus, comprising:
the converter comprises a converter body, a feed inlet arranged on the end wall of the converter body and a sealing door arranged at the feed inlet;
the converter body is a P-S converter;
the copper matte converting plant is adapted to carry out the copper matte converting method as defined in claim 1.
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| CN105986128A (en) * | 2016-07-05 | 2016-10-05 | 中国恩菲工程技术有限公司 | Thermal state copper and sulfur blowing device |
| JP2017500442A (en) * | 2013-11-28 | 2017-01-05 | 金隆銅業有限公司 | Method and device for intelligent determination and endpoint prediction of PS copper converter blowing process |
| CN205974630U (en) * | 2016-08-17 | 2017-02-22 | 沈阳有色冶金设计研究院 | Copper smelting device |
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2019
- 2019-06-27 CN CN201910568198.6A patent/CN110284009B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328545A (en) * | 2006-10-19 | 2008-12-24 | 中国恩菲工程技术有限公司 | Process of oxygen bottom blowing continuous copper smelting |
| JP2011174175A (en) * | 2010-01-26 | 2011-09-08 | Furukawa Electric Co Ltd:The | Method and apparatus for removing coating layer |
| JP2017500442A (en) * | 2013-11-28 | 2017-01-05 | 金隆銅業有限公司 | Method and device for intelligent determination and endpoint prediction of PS copper converter blowing process |
| CN105986128A (en) * | 2016-07-05 | 2016-10-05 | 中国恩菲工程技术有限公司 | Thermal state copper and sulfur blowing device |
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