CN104928473B - A kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas - Google Patents
A kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas Download PDFInfo
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- CN104928473B CN104928473B CN201510396835.8A CN201510396835A CN104928473B CN 104928473 B CN104928473 B CN 104928473B CN 201510396835 A CN201510396835 A CN 201510396835A CN 104928473 B CN104928473 B CN 104928473B
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Abstract
A kind of method that Ausmelt furnace reduces carbonomonoxide concentration in tail gas, belong to non-ferrous metal metallurgy technical field, using spray gun oxygen-enriched top blowing submergence smelting technology, comprise the following steps, the concentration of carbon monoxide in step one, measurement Ausmelt furnace tail gas, after carbonomonoxide concentration measured value is too high, reduce spray gun Coal-fired capacity；Step 2, holding Ausmelt furnace are continuously in production status, and molten bath face is 1500mm～1900mm, and molten bath face highly often raises 100mm, and coal amount increases 50kg, and bath temperature is 1280 DEG C～1360 DEG C；Step 3, measurement spray gun oxygen concentration, spray gun oxygen concentration are reduced the 3% of measured value；Step 4, the exhaust blower revolution of holding Ausmelt furnace are 1200rpm.The present invention gradually reduces the generation of carbon monoxide in tail gas in source and production process simultaneously, greatly improves the safety of Ausmelt furnace production period, reduces the risk that there is potential safety hazard.
Description
Technical field
The invention belongs to non-ferrous metallurgy technology field, especially relate to a kind of Ausmelt furnace oxygen-enriched top blowing melting
The method that stove reduces carbonomonoxide concentration.
Background technology
Ausmelt furnace feeds intake production period, because many-sided reason makes tail gas carbon monoxide content often exceeded, leads to
The electricity system such as gather dust cannot run well, and there is larger potential safety hazard.This process is very big to Australia's stove Influence of production, summarizes following
Some：
1., when Ausmelt furnace tail gas carbon monoxide is exceeded, electricity gathers dust and there is explosion danger, jeopardizes production safety.
2. it is impossible to provide qualified flue gas acid preparing for sulfuric acid plant when Ausmelt furnace tail gas carbon monoxide is exceeded.
3., when Ausmelt furnace tail gas carbon monoxide is exceeded, if there are leakage, surrounding enviroment are affected larger.
Therefore, needing badly in the middle of prior art wants a kind of new technical scheme to solve this problem.
Content of the invention
The technical problem to be solved is：Carbonomonoxide concentration in a kind of reduction Ausmelt furnace tail gas is provided
Method, gradually reduces the generation of carbon monoxide in tail gas in source and production process simultaneously, greatly improves Australia Si Maite
The safety of stove production period, reduces the risk that there is potential safety hazard.
A kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas, is characterized in that：Comprise the following steps, and with
Lower step is sequentially carried out
The concentration of carbon monoxide in step one, measurement Ausmelt furnace tail gas, carbonomonoxide concentration measured value is higher than
After 3000ppm, reduce spray gun Coal-fired capacity 100kg, and all reduce spray gun Coal-fired capacity 100kg every time, carbon monoxide is dense to tail gas
Degree is less than 3000ppm, or spray gun Coal-fired capacity is less than 3000kg/h；
Step 2, holding Ausmelt furnace are continuously in production status, and molten bath face is 1500mm～1900mm, molten bath face
Highly often raise 100mm, coal amount increases 50kg, improves bath temperature and is 1280 DEG C～1360 DEG C；
Step 3, measurement spray gun oxygen concentration, spray gun oxygen concentration are reduced the 3% of measured value, increase spray gun air capacity
To 12000Nm3/ h～13000Nm3/ h, spray gun amount of oxygen is 5000Nm3/ h～6000Nm3/h；
Step 4, the exhaust blower revolution of Ausmelt furnace is improved 50rpm, and all improve 50rpm every time, turn to exhaust blower
Number is 1200rpm, and the exhaust blower revolution keeping Ausmelt furnace is 1200rpm；
Step 5, through described step one to step 4 operation after, measurement Ausmelt furnace tail gas in carbon monoxide concentration,
Concentration is higher than 3000ppm, and holding pipette tips submergence pool depth is 50mm～100mm；Concentration is less than 3000ppm, keeps this wheat of Australia
Special stove continues the operation of this state.
Using spray gun oxygen-enriched top blowing submergence smelting technology.
The weight entering nickel in stove concentrate of Ausmelt furnace is the 4%～14% of concentrate weight, and the weight of copper is concentrate weight
The 0.5%～5% of amount, the weight of sulfur is the 10%～24% of concentrate weight.
In spray gun fire coal, the weight of fixed carbon is the 38%～45% of coal-fired weight, and the weight of fugitive constituent is coal-fired weight
28%～38%.
By above-mentioned design, the present invention can bring following beneficial effect：In a kind of reduction Ausmelt furnace tail gas
The method of carbonomonoxide concentration, gradually reduces the generation of carbon monoxide in tail gas, significantly in source and production process simultaneously
Improve the safety of Ausmelt furnace production period, reduce the risk that there is potential safety hazard.Spray gun air quantity in step 3
Control, the purpose of carbon monoxide in dilution tail gas can be played；Control to exhaust blower revolution in step 4, can make flue gas more
Fast suitable flue is discharged, and reduces fire door and leap up fiery phenomenon thus reducing the generation of carbon monoxide.
Brief description
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated：
Fig. 1 is that a kind of operating process reducing the method for carbonomonoxide concentration in Ausmelt furnace tail gas of the present invention is illustrated
Figure.
Specific embodiment
Embodiment one,
A kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas, as shown in figure 1, comprising the following steps, and
Following steps are sequentially carried out
The concentration of carbon monoxide in step one, measurement Ausmelt furnace tail gas, carbonomonoxide concentration measured value is higher than
After 3000ppm, reduce spray gun Coal-fired capacity 100kg, and all minimizings spray gun Coal-fired capacity 100kg per minute, the carbon monoxide to tail gas
Concentration is less than 3000ppm, or spray gun Coal-fired capacity is less than 3000kg/h；
Step 2, holding Ausmelt furnace are continuously in production status, and molten bath face is 1600mm, highly every liter of molten bath face
High 100mm, coal amount increases 50kg, improves bath temperature and ensures Australia's slag smooth discharge, and bath temperature is 1300 DEG C；
Step 3, measurement spray gun oxygen concentration, spray gun oxygen concentration are reduced the 3% of measured value, increase spray gun air capacity
To 12000Nm3/ h, spray gun amount of oxygen is 5000Nm3/h；
Step 4, the exhaust blower revolution of Ausmelt furnace is improved 50rpm, and per minute all improve 50rpm, to exhaust blower
Revolution is 1200rpm, and the exhaust blower revolution keeping Ausmelt furnace is 1200rpm；
Step 5, through described step one to step 4 operation after, measurement Ausmelt furnace tail gas in carbon monoxide concentration,
Concentration is higher than 3000ppm, and holding pipette tips submergence pool depth is 80mm；Concentration is less than 3000ppm, keeps Ausmelt furnace to continue
This state operates.
Embodiment two,
A kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas,
The concentration of carbon monoxide in step one, measurement Ausmelt furnace tail gas, carbonomonoxide concentration measured value is higher than
After 3000ppm, reduce spray gun Coal-fired capacity 100kg, and all minimizings spray gun Coal-fired capacity 100kg per minute, the carbon monoxide to tail gas
Concentration is less than 3000ppm, or spray gun Coal-fired capacity is less than 3000kg/h；
Step 2, holding Ausmelt furnace are continuously in production status, and molten bath face is 1800mm, highly every liter of molten bath face
High 100mm, coal amount increases 50kg, improves bath temperature and ensures Australia's slag smooth discharge, and bath temperature rises to 1320 DEG C；
Step 3, measurement spray gun oxygen concentration, spray gun oxygen concentration are reduced the 3% of measured value, increase spray gun air capacity
To 13000Nm3/ h, spray gun amount of oxygen is 5000Nm3/h；
Step 4, the exhaust blower revolution of Ausmelt furnace is improved 50rpm, and per minute all improve 50rpm, to exhaust blower
Revolution is 1200rpm, and the exhaust blower revolution keeping Ausmelt furnace is 1200rpm；
Step 5, through described step one to step 4 operation after, measurement Ausmelt furnace tail gas in carbon monoxide concentration,
Concentration is higher than 3000ppm, and holding pipette tips submergence pool depth is 60mm；Concentration is less than 3000ppm, keeps Ausmelt furnace to continue
This state operates.
A kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas of the present invention adopts spray gun oxygen-enriched top blowing submergence
Smelting technology.
In a kind of present invention reduction Ausmelt furnace tail gas, the method Ausmelt furnace of carbonomonoxide concentration enters stove concentrate
The weight of middle nickel is the 4%～14% of concentrate weight, and the weight of copper is the 0.5%～5% of concentrate weight, and the weight of sulfur is concentrate
The 10%～24% of weight.
The weight of fixed carbon in the method spray gun fire coal of carbonomonoxide concentration in a kind of present invention reduction Ausmelt furnace tail gas
Measure 38%～45% for coal-fired weight, the weight of fugitive constituent is the 28%～38% of coal-fired weight.
A kind of operation reducing the method and step one of carbonomonoxide concentration in Ausmelt furnace tail gas of the present invention can be from source
Head reduces the generation of carbon monoxide, because, in Ausmelt furnace generating process, operator will discharge feelings according to molten bath face height
Condition controlling bath temperature, during this plus-minus spray gun Coal-fired capacity just show particularly important, molten bath face is low and emission behaviour relatively
When good, can suitably reduce spray gun Coal-fired capacity.
Claims (4)
1. a kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas, is characterized in that：Comprise the following steps, and below
Step is sequentially carried out
The concentration of carbon monoxide in step one, measurement Ausmelt furnace tail gas, carbonomonoxide concentration measured value is higher than 3000ppm
Afterwards, reduce spray gun Coal-fired capacity 100kg, and all reduce spray gun Coal-fired capacity 100kg every time, carbonomonoxide concentration is less than to tail gas
3000ppm, or spray gun Coal-fired capacity is less than 3000kg/h；
Step 2, holding Ausmelt furnace are continuously in production status, and molten bath face is 1500mm～1900mm, molten bath face height
Often raise 100mm, coal amount increases 50kg, improve bath temperature and be 1280 DEG C～1360 DEG C；
Step 3, measurement spray gun oxygen concentration, spray gun oxygen concentration are reduced the 3% of measured value, increase spray gun air capacity extremely
12000Nm3/ h～13000Nm3/ h, spray gun amount of oxygen is 5000Nm3/ h～6000Nm3/h；
Step 4, the exhaust blower revolution of Ausmelt furnace is improved 50rpm, and all improve 50rpm every time, to exhaust blower revolution be
1200rpm, the exhaust blower revolution keeping Ausmelt furnace is 1200rpm；
Step 5, through described step one to step 4 operation after, measurement Ausmelt furnace tail gas in carbon monoxide concentration, concentration
Higher than 3000ppm, holding pipette tips submergence pool depth is 50mm～100mm；Concentration is less than 3000ppm, keeps Ausmelt furnace
Continue the operation of this state.
2. a kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas according to claim 1, is characterized in that：
Using spray gun oxygen-enriched top blowing submergence smelting technology.
3. a kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas according to claim 1, is characterized in that：
The weight entering nickel in stove concentrate of Ausmelt furnace is the 4%～14% of concentrate weight, and the weight of copper is the 0.5% of concentrate weight
～5%, the weight of sulfur is the 10%～24% of concentrate weight.
4. a kind of method reducing carbonomonoxide concentration in Ausmelt furnace tail gas according to claim 1, is characterized in that：
In spray gun fire coal, the weight of fixed carbon is the 38%～45% of coal-fired weight, the weight of fugitive constituent be coal-fired weight 28%～
38%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4985068A (en) * | 1989-11-27 | 1991-01-15 | Midrex International Bv, Rotterdam, Zurich Branch | Method and apparatus for smelting iron oxide |
| KR101242696B1 (en) * | 2010-12-28 | 2013-03-12 | 주식회사 포스코 | Burning control method of combustion chamber |
| CN102268557A (en) * | 2011-08-02 | 2011-12-07 | 云南锡业集团（控股）有限责任公司 | One-step oxidizing smelting, retailoring and slag fuming volatilization method for lead sulphide concentrate |
| CN103388042B (en) * | 2013-07-23 | 2016-05-11 | 山东莱钢永锋钢铁有限公司 | Bessemerize carbon monoxide rifle bit manipulation method |
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