CN112048626A - Flash smelting matte treatment method - Google Patents
Flash smelting matte treatment method Download PDFInfo
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- CN112048626A CN112048626A CN202010831455.3A CN202010831455A CN112048626A CN 112048626 A CN112048626 A CN 112048626A CN 202010831455 A CN202010831455 A CN 202010831455A CN 112048626 A CN112048626 A CN 112048626A
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- China
- Prior art keywords
- matte
- copper
- water
- copper matte
- qualified
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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
- C22B15/0047—Smelting or converting flash smelting or converting
Abstract
The invention belongs to the field of copper smelting, and particularly relates to a processing method for flash smelting copper matte, which comprises the steps of water quenching molten copper matte produced by each batch of flash smelting furnaces to obtain water quenched copper matte, detecting the copper content and the silicon dioxide content of the water quenched copper matte, stacking the water quenched copper matte with the copper content of 66-72% and the silicon dioxide content of less than or equal to 0.4% in a qualified copper matte storage yard, filtering out water, and directly conveying the water quenched copper matte to a flash converting furnace for processing; other water quenching copper matte are unqualified copper matte, most of the water quenching copper matte is directly mixed with qualified copper matte in the stacking process in the conveying process, flash converting treatment is carried out, and a small part of the unqualified copper matte with larger quality difference with the qualified copper matte is used as the bottom layer of the qualified copper matte stack or is directly transferred to other storehouses for treatment, so that the purpose of immediate production and transfer is realized, manpower and material resources are saved, the stacking field is saved, the step of uniformly mixing and spreading is simplified, and the influence on the flash converting furnace process caused by material quality fluctuation or slow transfer is reduced.
Description
Technical Field
The invention belongs to the field of copper smelting, and particularly relates to a treatment method for flash smelting of matte.
Background
In the flash smelting and flash converting process, the matte produced by the flash smelting furnace is used as the raw material of the flash converting furnace for continuous treatment. The matte melt produced by the flash smelting furnace is water quenched and granulated, conveyed to a stacker by a belt conveyer and unloaded into a matte storage yard, after part of water is filtered out, the matte melt is taken by a material taking machine and is led to a flash converting process by the belt conveyer.
The flash converting furnace has strict requirements on the quality of copper matte, when the quality of the copper matte is not good, the furnace condition of the flash converting furnace is fluctuated, particularly, the copper matte silicon dioxide content is too high, so that the copper slag discharging of the flash converting furnace is difficult, and the flash converting furnace can be stopped in severe cases. Therefore, the copper and silicon dioxide content of the water quenched copper matte can be detected after the copper matte is quenched, and the unqualified copper matte with large quality fluctuation can be stacked separately from the qualified copper matte, so that fluctuation in the flash converting process is avoided.
When the flash smelting furnace is started and stopped or the furnace condition fluctuates, part of unqualified copper matte is inevitably produced, when the output of the unqualified copper matte is too large or the quality is very poor (the copper grade or the content difference of silicon dioxide is larger than that of the qualified copper matte), the unqualified copper matte is required to be separately stacked in batches according to the quality of the copper matte, a copper matte stacking site and a temporary stacking site are fully stacked with the qualified or unqualified water quenched copper matte, no enough space is available for continuously storing the water quenched copper matte, and the supply of the copper matte in the flash converting process is influenced, so that the flash smelting and flash converting operation cannot normally produce.
Disclosure of Invention
The invention aims to provide a processing method for flash smelting copper matte, which is used for carrying out batch processing and uniform flat stacking according to the detected quality of water quenched copper matte, and realizing uniform mixing of different batches of copper matte in the stacking process.
In order to achieve the purpose, the invention adopts the technical scheme that: a processing method for flash smelting of matte is characterized by comprising the following steps: water quenching is carried out on a copper matte melt produced by each batch of flash smelting furnace to obtain water quenched copper matte, the copper content and the silicon dioxide content of the water quenched copper matte of the batch are detected, the water quenched copper matte with the copper content of 66-72% and the silicon dioxide content of less than or equal to 0.4% is qualified copper matte, the qualified copper matte is stacked in a qualified copper matte storage yard, and the water is directly conveyed to a flash converting furnace for treatment after being filtered out;
and other water-quenched copper matte is unqualified copper matte, and the treatment is carried out in the following way in the conveying process:
(1) copper content of Water-quenched copper matte<66% or>72% or a silica content of 0.4%<SiO2When the concentration is less than or equal to 0.6 percent, the batch of water-quenched copper matte is conveyed to a qualified copper matte storage yard and is uniformly paved on the surface layer of the qualified copper matte storage yard;
(2) the content of water-quenched copper matte silicon dioxide is 0.6 percent<SiO2When the water content is less than or equal to 1.0 percent, the batch of water-quenched copper matte is conveyed to a qualified copper matte storage yard and is uniformly spread on the ground to be used as the bottom layer of the qualified copper matte storage yard;
(3) the content of water-quenched copper matte silicon dioxide is 1.0 percent<SiO2When the concentration is less than or equal to 2.0 percent, transferring the batch of water quenched copper matte to a temporary copper matte storage yard for stacking;
(4) and when the silicon dioxide content of the water-quenched copper is more than 2.0%, transferring the batch of water-quenched copper to a concentrate storage and returning the concentrate storage to the smelting furnace for treatment.
By adopting the scheme of the invention, the unqualified matte is mostly and directly mixed with the qualified matte in the stacking process and is subjected to flash converting treatment, and the unqualified matte with great quality difference with the qualified matte is used as the bottom layer of the qualified matte stack or is directly transferred to other storehouses for treatment, so that the production and transfer are realized, the manpower and material resources are saved, the stacking field is saved, the step of uniformly mixing and spreading is simplified, the possibility of influencing the flash converting furnace process due to the quality fluctuation or slow transfer of the material is reduced, and the production is safer and more stable.
Detailed Description
The technical solution of the present invention is further described below.
A processing method for flash smelting of copper matte comprises the steps of carrying out water quenching on a copper matte melt produced by each batch of flash smelting furnaces to obtain water quenched copper matte, detecting the copper content and the silicon dioxide content of the water quenched copper matte, stacking the water quenched copper matte with the copper content of 66-72% and the silicon dioxide content of less than or equal to 0.4% in a qualified copper matte storage yard, filtering out water, and directly conveying the water quenched copper matte to a flash converting furnace for processing;
and other water-quenched copper matte is unqualified copper matte, and the treatment is carried out in the following way in the conveying process:
(1) copper content of Water-quenched copper matte<66% or>72% or a silica content of 0.4%<SiO2When the concentration is less than or equal to 0.6 percent, the batch of water-quenched copper matte is conveyed to a qualified copper matte storage yard and is uniformly paved on the surface layer of the qualified copper matte storage yard;
(2) the content of water-quenched copper matte silicon dioxide is 0.6 percent<SiO2When the water content is less than or equal to 1.0 percent, the batch of water-quenched copper matte is conveyed to a qualified copper matte storage yard and is uniformly spread on the ground to be used as the bottom layer of the qualified copper matte storage yard;
(3) the content of water-quenched copper matte silicon dioxide is 1.0 percent<SiO2When the concentration is less than or equal to 2.0 percent, transferring the batch of water quenched copper matte to a temporary copper matte storage yard for stacking;
(4) and when the silicon dioxide content of the water-quenched copper is more than 2.0%, transferring the batch of water-quenched copper to a concentrate storage and returning the concentrate storage to the smelting furnace for treatment.
Specifically, the qualified matte storage yard is a dome-shaped circular storage yard, and the materials are stacked and taken by adopting a top stacking and side taking mode. Be equipped with water quenching copper matte conveyor belt between flash smelting furnace and the flash converting furnace, be equipped with electronic tripper in the conveyor belt stroke, after water quenching copper matte quality detects, the unqualified copper matte that needs the outward transport discharges to interim storage yard through electronic tripper.
After the quality of the water quenched copper is qualified, the water quenched copper is conveyed to a dome-shaped circular storage yard by a belt conveyor, the storage yard is freely swung by a storage machine above the storage yard, the water quenched copper is freely paved on a qualified copper matte pile from top to bottom, after most of water is naturally filtered, the water quenched copper is taken from the side surface during taking, and is conveyed to a flash converting furnace for processing.
The unqualified water quenched copper matte of detected quality, the part that the quality fluctuation is little is directly transported to qualified copper matte stock dump, just evenly lays on the top layer of qualified copper matte heap when the windrow, has realized the mixing operation immediately, and the great unqualified copper matte of small part quality fluctuation is transported to interim stock dump by electric discharger from the belt conveyer and is dealt with separately again in the transportation process after the water quenching.
In the unqualified matte treatment mode (3), when the yield of the unqualified matte in the batch is less than 200 tons, the water quenched copper in the batch is quasi-transported to a qualified matte storage yard and is paved on the ground to be used as the bottommost layer of the qualified matte stack; and when the yield of the unqualified water quenched copper in the batch is more than 200 tons, transferring 200 tons to a qualified copper matte yard, paving the yard on the ground to serve as the bottommost layer of the qualified copper matte yard, and transferring the excessive part of the water quenched copper to a reverse smelting furnace of a concentrate storage for treatment.
In the unqualified matte treatment mode (4), when the yield of the unqualified matte in the batch is less than or equal to 100 tons, the unqualified matte is mixed into a blowing slag storage, mixed with blowing slag and then returned to a smelting furnace for treatment; when the unqualified matte output of the batch is more than 100 tons, the batch is separately stacked and taken as copper concentrate for remelting treatment.
By adopting the treatment method, unqualified matte produced each time is uniformly paved in a temporary storage yard from bottom to top, the quality difference exists between the upper layer and the lower layer of the accumulated matte material pile, the blending operation of the matte is formed when the matte is taken from the side, after water quenched matte with different qualities is mixed, the quality is uniform, the same treatment method can be adopted for treatment, the treatment cost is reduced, the storage yard is saved, the blending operation of materials in each batch is directly realized in the stacking process, the operation procedure is simplified, the manpower and material resources are saved, the working efficiency is improved, the qualified matte storage yard and the temporary storage yard are more ordered, and the influence on the production of a smelting-converting system due to the stacking problem is avoided.
Claims (5)
1. A processing method for flash smelting of matte is characterized by comprising the following steps: water quenching is carried out on a copper matte melt produced by each batch of flash smelting furnace to obtain water quenched copper matte, the copper content and the silicon dioxide content of the water quenched copper matte of the batch are detected, the water quenched copper matte with the copper content of 66-72% and the silicon dioxide content of less than or equal to 0.4% is qualified copper matte, the qualified copper matte is stacked in a qualified copper matte storage yard, and the water is directly conveyed to a flash converting furnace for treatment after being filtered out;
and other water-quenched copper matte is unqualified copper matte, and the treatment is carried out in the following way in the conveying process:
(1) copper content of Water-quenched copper matte<66% or>72% or a silica content of 0.4%<SiO2When the concentration is less than or equal to 0.6 percent, the batch of water-quenched copper matte is conveyed to a qualified copper matte storage yard and is uniformly paved on the surface layer of the qualified copper matte storage yard;
(2) the content of water-quenched copper matte silicon dioxide is 0.6 percent<SiO2When the water content is less than or equal to 1.0 percent, the batch of water-quenched copper matte is conveyed to a qualified copper matte storage yard and is uniformly spread on the ground to be used as the bottom layer of the qualified copper matte storage yard;
(3) the content of water-quenched copper matte silicon dioxide is 1.0 percent<SiO2When the concentration is less than or equal to 2.0 percent, transferring the batch of water quenched copper matte to a temporary copper matte storage yard for stacking;
(4) and when the silicon dioxide content of the water-quenched copper is more than 2.0%, transferring the batch of water-quenched copper to a concentrate storage and returning the concentrate storage to the smelting furnace for treatment.
2. The process for flash smelting matte according to claim 1, wherein: the qualified matte storage yard is a dome circular storage yard, and the materials are stacked and taken by adopting a top stacking and side taking mode.
3. The process for flash smelting matte according to claim 1, wherein: be equipped with water quenching copper matte conveyor belt between flash smelting furnace and the flash converting furnace, be equipped with electronic tripper in the conveyor belt stroke, after water quenching copper matte quality detects, the unqualified copper matte that needs the outward transport discharges to interim storage yard through electronic tripper.
4. The process for flash smelting matte according to claim 1, wherein: in the unqualified matte treatment mode (3), when the yield of the unqualified matte in the batch is less than 200 tons, the water quenched copper in the batch is quasi-transported to a qualified matte storage yard and is paved on the ground to be used as the bottommost layer of the qualified matte stack; and when the yield of the unqualified water quenched copper in the batch is more than 200 tons, transferring 200 tons to a qualified copper matte yard, paving the yard on the ground to serve as the bottommost layer of the qualified copper matte yard, and transferring the excessive part of the water quenched copper to a reverse smelting furnace of a concentrate storage for treatment.
5. The process for flash smelting matte according to claim 1, wherein: in the unqualified matte treatment mode (4), when the yield of the unqualified matte in the batch is less than or equal to 100 tons, the unqualified matte is mixed into a blowing slag storage, mixed with blowing slag and then returned to a smelting furnace for treatment; when the unqualified matte output of the batch is more than 100 tons, the batch is separately stacked and taken as copper concentrate for remelting treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010831455.3A CN112048626B (en) | 2020-08-18 | 2020-08-18 | Flash smelting treatment method for matte |
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| CN202010831455.3A CN112048626B (en) | 2020-08-18 | 2020-08-18 | Flash smelting treatment method for matte |
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| CN112048626A true CN112048626A (en) | 2020-12-08 |
| CN112048626B CN112048626B (en) | 2022-07-15 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790366A (en) * | 1969-01-14 | 1974-02-05 | Outokumpu Oy | Method of flash smelting sulfide ores |
| US5007959A (en) * | 1988-04-29 | 1991-04-16 | Noranda Inc. | Process for converting of solid high-grade copper matte |
| US5356457A (en) * | 1991-12-18 | 1994-10-18 | Corporacion Nacional Del Cobre De Chile | Hydrometallurgical process for the treatment of copper-bearing ore |
| CN101660043A (en) * | 2009-09-25 | 2010-03-03 | 北京科技大学 | Classified stacking method of oxidized mine with high content of mud |
| CN102876886A (en) * | 2012-09-28 | 2013-01-16 | 中冶京诚工程技术有限公司 | Technical method and equipment for recycling iron-contained solid waste |
| CN106884094A (en) * | 2017-03-10 | 2017-06-23 | 白银有色集团股份有限公司 | A kind of double heap distributions for concentrate store stockpile burdening |
| CN108866348A (en) * | 2018-07-27 | 2018-11-23 | 阳谷祥光铜业有限公司 | A kind of space blowing material preparation technology and stock preparation system of matte |
-
2020
- 2020-08-18 CN CN202010831455.3A patent/CN112048626B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790366A (en) * | 1969-01-14 | 1974-02-05 | Outokumpu Oy | Method of flash smelting sulfide ores |
| US5007959A (en) * | 1988-04-29 | 1991-04-16 | Noranda Inc. | Process for converting of solid high-grade copper matte |
| US5356457A (en) * | 1991-12-18 | 1994-10-18 | Corporacion Nacional Del Cobre De Chile | Hydrometallurgical process for the treatment of copper-bearing ore |
| CN101660043A (en) * | 2009-09-25 | 2010-03-03 | 北京科技大学 | Classified stacking method of oxidized mine with high content of mud |
| CN102876886A (en) * | 2012-09-28 | 2013-01-16 | 中冶京诚工程技术有限公司 | Technical method and equipment for recycling iron-contained solid waste |
| CN106884094A (en) * | 2017-03-10 | 2017-06-23 | 白银有色集团股份有限公司 | A kind of double heap distributions for concentrate store stockpile burdening |
| CN108866348A (en) * | 2018-07-27 | 2018-11-23 | 阳谷祥光铜业有限公司 | A kind of space blowing material preparation technology and stock preparation system of matte |
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| CN112048626B (en) | 2022-07-15 |
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