CN107338356A - A kind of shaft cooler stove a tail wind recycles technique - Google Patents
A kind of shaft cooler stove a tail wind recycles technique Download PDFInfo
- Publication number
- CN107338356A CN107338356A CN201710533023.2A CN201710533023A CN107338356A CN 107338356 A CN107338356 A CN 107338356A CN 201710533023 A CN201710533023 A CN 201710533023A CN 107338356 A CN107338356 A CN 107338356A
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- shaft cooler
- temperature
- stove
- air
- pelletizing
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/08—Chloridising roasting
-
- 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
- C22B11/00—Obtaining noble metals
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to tail gas recycle field, specifically discloses a kind of shaft cooler stove a tail wind and recycles technique.The technique is：High temperature iron pelletizing is loaded from the top of shaft cooler, heat exchange is carried out during reverse flow in shaft cooler through cold air and high temperature iron pelletizing, the temperature of high temperature iron pelletizing is reduced to less than 100 DEG C, while there is a small amount of metal chloride to volatilize in pelletizing cooling procedure；Temperature is increased to 400 DEG C or so after cold air passes through heat exchange, is changed into hot-air；A hot-air part is discharged from the hole in the middle part of shaft cooler, sends to subsequent handling；Another part is discharged from the hole on shaft cooler top, and returning to rotary kiln after valuable metal chloride therein is reclaimed in cyclone dust collection reclaims heat energy therein.The present invention recycles to stove a tail wind, on the one hand reclaims heat therein, the call of response national energy-saving consumption reduction；On the other hand precious metal chloride therein is reclaimed, improves metal recovery rate.
Description
Technical field
The present invention relates to metallurgical technology field, the production being related to after iron ball group high-temperature roasting chlorinated gold extracting made of pyrite cinder
A kind of method of product cooling, valuable metal chloride and waste heat recovery, and in particular to shaft cooler stove a tail wind recycles work
Skill.
Background technology
Pyrite cinder is with addition of a certain amount of calcium chloride solution, through profit mill, pelletizing, into rotary kiln in carry out high-temp chlorination roasting
Burn, 1100~1250 DEG C of sintering temperature, the valuable metal reaction generation chloride-sublimation in pelletizing, while pelletizing is consolidated, and is become
Into high intensity roast ball, into shaft cooler in cooled down.
Cold air by centrifugal blower blast in shaft cooler with high temperature pelletizing (temperature>800 DEG C) contact, carry out hot friendship
Cooling pelletizing is changed, pelletizing temperature is down to 80 DEG C or so.Air after heat exchange is discharged from the stove tail of shaft cooler, temperature
Degree is increased to 400 DEG C or so, while may still have a small amount of metal chloride to volatilize in pelletizing cooling procedure, and stove a tail wind is returned
Receive and utilize, on the one hand reclaim heat therein, the call of response national energy-saving consumption reduction；On the other hand your gold therein can be reclaimed
Belong to chloride, improve metal recovery rate.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of shaft cooler stove a tail wind and recycle technique, the technique
Reclaimed including the recuperation of heat of stove a tail wind and metal chloride, on the one hand reclaimed the heat in stove a tail wind, reached energy-saving mesh
, the precious metal chloride in another aspect recovery furnace a tail wind, improve metal recovery rate.
In order to solve the above technical problems, the technical solution adopted by the present invention is：The shaft cooler stove a tail wind recovery profit
With technique, following steps are specifically included：
(1) it is 800~1200 DEG C by the temperature after high-temperature roasting, particle mean size is 12~18mm high temperature iron pelletizing, from
The top of shaft cooler loads, and opens up 570~630mm of diameter hole on the middle part of shaft cooler and top；
(2) cold air is passed through from the bottom of shaft cooler, the high temperature iron pelletizing is with cold air in shaft cooler
Interior reverse flow, treat that the temperature of the high temperature iron pelletizing is reduced to less than 100 DEG C, cooled iron ball is rolled into a ball from shaft cooler
Bottom is discharged, while has a small amount of metal chloride to evaporate into cold air in pelletizing cooling procedure；The cold air pass through with
After high temperature iron pelletizing heat exchange, its temperature is increased to 300~450 DEG C, turns into hot-air；
(3) an above-mentioned hot-air part is discharged from the hole in the middle part of shaft cooler, sends to subsequent handling use；Another portion
Divide and discharged from the hole on shaft cooler top, added after valuable metal chloride therein is reclaimed in cyclone dust collection, then through high temperature
Rotary kiln is returned after pressure fan and reclaims heat energy therein.
Preferably, above-mentioned shaft cooler stove a tail wind recycles technique, in step (2), the temperature of the high temperature iron pelletizing
Degree is reduced to 50~90 DEG C.
Wherein, above-mentioned shaft cooler stove a tail wind recycles technique, in step (3), the high-temperature blower and rotary kiln
The pipeline enclosure of connection is provided with air quantity regulation flowmeter.
Wherein, above-mentioned shaft cooler stove a tail wind recycles technique, and in step (3), the hot-air is from high-temperature pressurizing
After being come out in blower fan, and coal gas and First air, after being burnt in burner noz(zle), into rotary kiln.
Wherein, above-mentioned shaft cooler stove a tail wind recycles technique, and in step (3), the subsequent handling is ore pulp leaching
Go out heating process or calcium chloride heating enrichment process.
Compared with prior art, the beneficial effects of the invention are as follows：Present invention is generally directed to iron ball group made of pyrite cinder
Product cooling, valuable metal chloride and waste heat recovery after high-temperature roasting chlorinated gold extracting provide a kind of new technique, the work
Skill will carry out the cold air of heat exchange with high temperature iron pelletizing, i.e., final stove a tail wind (i.e. hot-air) is handled：A part
Heat enters subsequent handling, and a part of heat recycles into rotary kiln, reaches mesh that is energy-saving, reducing production cost
's.Meanwhile the precious metal chloride in the technology utilization cyclone dust collection recovery furnace a tail wind (i.e. hot-air), not only increase metal
The rate of recovery, and avoid precious metal chloride and environment is polluted.
Brief description of the drawings
Fig. 1 is the FB(flow block) that shaft cooler stove a tail wind of the present invention recycles technique.
Embodiment
The invention provides a kind of shaft cooler stove a tail wind to recycle technique, and the technique specifically includes following steps：
(1) it is 800~1200 DEG C by the temperature after high-temperature roasting, particle mean size is 12~18mm high temperature iron pelletizing, from
The top of shaft cooler loads；And open up 570~630mm of diameter hole on the middle part of shaft cooler and top；
(2) cold air is passed through from the bottom of shaft cooler, the high temperature iron pelletizing is with cold air in shaft cooler
Interior reverse flow, treat that the temperature of the high temperature iron pelletizing is reduced to less than 100 DEG C, cooled iron ball is rolled into a ball from shaft cooler
Bottom is discharged, while has a small amount of metal chloride to evaporate into cold air in pelletizing cooling procedure；The cold air pass through with
After high temperature iron pelletizing heat exchange, its temperature is increased to 300~450 DEG C, turns into hot-air；
(3) an above-mentioned hot-air part is discharged from the hole in the middle part of shaft cooler, sends to subsequent handling recycling；Separately
A part is discharged from the hole on shaft cooler top, after valuable metal chloride therein is reclaimed in cyclone dust collection, then through height
Warm booster fan, with coal gas and First air, after being burnt in burner noz(zle), return to rotary kiln and reclaim heat energy therein.
Preferably, above-mentioned shaft cooler stove a tail wind recycles technique, in step (2), the temperature of the high temperature iron pelletizing
Degree is reduced to 50~90 DEG C.
Wherein, above-mentioned shaft cooler stove a tail wind recycles technique, and in step (3), the high-temperature pressurizing blower fan is with returning
The pipeline enclosure of rotary kiln connection installs an air quantity regulation flowmeter, for controlling the air quantity for returning to rotary kiln and using, to ensure back
Temperature stabilization in rotary kiln.
Wherein, above-mentioned shaft cooler stove a tail wind recycles technique, and in step (3), the subsequent handling can be to appoint
Meaning needs the process for heating (supplying heat), and such as ore pulp leaches heating process, calcium chloride heating enrichment process.
Below in conjunction with specific embodiment, the present invention will be further explained, but and is not so limited the present invention
Protection domain.
Embodiment 1
Shaft cooler stove a tail wind recycles technique, and the technique specifically includes following steps：
(1) it is 1100 DEG C by the temperature after high-temperature roasting, particle mean size is 13mm high temperature iron pelletizing, from shaft cooler
Top load；And open up diameter 580mm hole on the middle part of shaft cooler and top；
(2) cold air is passed through by centrifugal blower from the bottom of shaft cooler, the high temperature iron pelletizing and cold air
The reverse flow in shaft cooler, treat that the temperature of the high temperature iron pelletizing is reduced to 80 DEG C, cooled iron ball is rolled into a ball from vertical
The bottom discharge of cooler, while there is a small amount of metal chloride to evaporate into cold air in pelletizing cooling procedure；The cold sky
Gas pass through with after high temperature iron pelletizing heat exchange, its temperature is increased to 400 DEG C, turns into hot-air；
(3) an above-mentioned hot-air part is discharged from the hole in the middle part of shaft cooler, sends to calcium chloride CONCENTRATION PLANT to chlorine
Change calcium and be evaporated concentration；Another part is discharged from the hole on shaft cooler top, and recovery is gathered dust wherein through cyclone separator
Valuable metal chloride after, then through two high-temperature pressurizing blower fans, with coal gas and First air, after being burnt in burner noz(zle), return
Huis rotary kiln reclaims heat energy therein；The pipeline enclosure that the high-temperature pressurizing blower fan is connected with rotary kiln installs an air quantity regulation stream
Gauge, for controlling the air quantity for returning to rotary kiln and using, to ensure that rotary kiln temperature is stable.
Embodiment 2
Shaft cooler stove a tail wind recycles technique, and the technique specifically includes following steps：
(1) it is 1000 DEG C by the temperature after high-temperature roasting, particle mean size is 16mm high temperature iron pelletizing, from shaft cooler
Top load；And open up diameter 580mm hole on the middle part of shaft cooler and top；
(2) cold air is passed through by centrifugal blower from the bottom of shaft cooler, the high temperature iron pelletizing and cold air
The reverse flow in shaft cooler, treat that the temperature of the high temperature iron pelletizing is reduced to 90 DEG C, cooled iron ball is rolled into a ball from vertical
The bottom discharge of cooler, while there is a small amount of metal chloride to evaporate into cold air in pelletizing cooling procedure；The cold sky
Gas pass through with after high temperature iron pelletizing heat exchange, its temperature is increased to 410 DEG C, obtains hot-air；
(3) an above-mentioned hot-air part is discharged from the hole in the middle part of shaft cooler, is sent to ore pulp and is leached heating process；Separately
A part is discharged from the hole on shaft cooler top, after cyclone separator gathers dust recovery valuable metal chloride therein,
Again through two high-temperature pressurizing blower fans, with coal gas and First air, after being burnt in burner noz(zle), return to rotary kiln and reclaim heat therein
Energy；The pipeline enclosure that the high-temperature pressurizing blower fan is connected with rotary kiln installs an air quantity regulation flowmeter, is returned back for controlling
The air quantity that rotary kiln uses, to ensure that rotary kiln temperature is stable.
Embodiment 3
Shaft cooler stove a tail wind recycles technique, and the technique specifically includes following steps：
(1) it is 1000 DEG C by the temperature after high-temperature roasting, particle mean size is 16mm high temperature iron pelletizing, from shaft cooler
Top load；And open up diameter 630mm hole on the middle part of shaft cooler and top；
(2) cold air is passed through by centrifugal blower from the bottom of shaft cooler, the high temperature iron pelletizing and cold air
The reverse flow in shaft cooler, treat that the temperature of the high temperature iron pelletizing is reduced to 50 DEG C, cooled iron ball is rolled into a ball from vertical
The bottom discharge of cooler, while there is a small amount of metal chloride to evaporate into cold air in pelletizing cooling procedure；The cold sky
Gas pass through with after high temperature iron pelletizing heat exchange, its temperature is increased to 450 DEG C, turns into hot-air；
(3) an above-mentioned hot-air part is discharged from the hole in the middle part of shaft cooler, is sent to ore pulp and is leached heating process；Separately
A part is discharged from the hole on shaft cooler top, after cyclone separator gathers dust recovery valuable metal chloride therein,
Again through two high-temperature pressurizing blower fans, with coal gas and First air, after being burnt in burner noz(zle), return to rotary kiln and reclaim heat therein
Energy；The pipeline enclosure that the high-temperature pressurizing blower fan is connected with rotary kiln installs an air quantity regulation flowmeter, is returned back for controlling
The air quantity that rotary kiln uses, to ensure that rotary kiln temperature is stable.
Described above is the preferred embodiments of the present invention, it is noted that for those skilled in the art, is not being taken off
On the premise of structure of the present invention, various modifications and improvements can be made, these should also be as being considered as protection scope of the present invention,
These are all without the practicality for influenceing the effect of the invention implemented and this patent.
Claims (5)
1. shaft cooler stove a tail wind recycles technique, it is characterised in that the technique specifically includes following steps：
(1) it is 800~1200 DEG C by the temperature after high-temperature roasting, particle mean size is 12~18mm high temperature iron pelletizing, from vertical
The top of cooler loads, and opens up 570~630mm of diameter hole on the middle part of shaft cooler and top；
(2) cold air is passed through from the bottom of shaft cooler, the high temperature iron pelletizing and cold air are inverse in shaft cooler
To flowing, treat that the temperature of the high temperature iron pelletizing is reduced to less than 100 DEG C, cooled iron ball is rolled into a ball from the bottom of shaft cooler
Discharge, while there is a small amount of metal chloride to evaporate into cold air in pelletizing cooling procedure；The cold air passes through and high temperature
After the heat exchange of iron ball group, its temperature is increased to 300~450 DEG C, turns into hot-air；
(3) an above-mentioned hot-air part is discharged from the hole in the middle part of shaft cooler, sends to subsequent handling use；Another part from
Discharged in the hole on shaft cooler top, after valuable metal chloride therein is reclaimed in cyclone dust collection, then through high-temperature pressurizing wind
Rotary kiln is returned after machine and reclaims heat energy therein.
2. shaft cooler stove a tail wind according to claim 1 recycles technique, it is characterised in that in step (2), institute
The temperature for stating high temperature iron pelletizing is reduced to 50~90 DEG C.
3. shaft cooler stove a tail wind according to claim 1 recycles technique, it is characterised in that in step (3), institute
State the pipeline enclosure that high-temperature pressurizing blower fan is connected with rotary kiln and air quantity regulation flowmeter is installed.
4. shaft cooler stove a tail wind according to claim 1 recycles technique, it is characterised in that in step (3), institute
State after hot-air comes out from high-temperature pressurizing blower fan, and coal gas and First air, after being burnt in burner noz(zle), into rotary kiln.
5. shaft cooler stove a tail wind according to claim 1 recycles technique, it is characterised in that in step (3), institute
State subsequent handling and leach heating process or calcium chloride heating enrichment process for ore pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533023.2A CN107338356B (en) | 2017-07-03 | 2017-07-03 | A kind of shaft cooler furnace a tail wind recycling technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533023.2A CN107338356B (en) | 2017-07-03 | 2017-07-03 | A kind of shaft cooler furnace a tail wind recycling technique |
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| Publication Number | Publication Date |
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| CN107338356A true CN107338356A (en) | 2017-11-10 |
| CN107338356B CN107338356B (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710533023.2A Active CN107338356B (en) | 2017-07-03 | 2017-07-03 | A kind of shaft cooler furnace a tail wind recycling technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866327A (en) * | 2018-05-31 | 2018-11-23 | 江苏东九重工股份有限公司 | A kind of high temperature pelletizing cooling means and its device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103266A (en) * | 1984-08-24 | 1986-10-22 | Skf钢铁工程公司 | The method and apparatus of cooling pellets |
| CN102242254A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | High sulfide pyrite pellet reinforced roasting consolidation technology |
| CN102534188A (en) * | 2012-01-20 | 2012-07-04 | 个旧市富祥工贸有限责任公司 | Method for producing iron pellet with sulfur acid residue containing large contents of impurities and enriching valuable metal |
| CN104846194A (en) * | 2015-03-16 | 2015-08-19 | 北京矿冶研究总院 | Cooling method of chloridized roasted pellets |
-
2017
- 2017-07-03 CN CN201710533023.2A patent/CN107338356B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103266A (en) * | 1984-08-24 | 1986-10-22 | Skf钢铁工程公司 | The method and apparatus of cooling pellets |
| CN102242254A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | High sulfide pyrite pellet reinforced roasting consolidation technology |
| CN102534188A (en) * | 2012-01-20 | 2012-07-04 | 个旧市富祥工贸有限责任公司 | Method for producing iron pellet with sulfur acid residue containing large contents of impurities and enriching valuable metal |
| CN104846194A (en) * | 2015-03-16 | 2015-08-19 | 北京矿冶研究总院 | Cooling method of chloridized roasted pellets |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108866327A (en) * | 2018-05-31 | 2018-11-23 | 江苏东九重工股份有限公司 | A kind of high temperature pelletizing cooling means and its device |
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| CN107338356B (en) | 2019-05-10 |
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