CN103695660B - Autogenous smelting achievement method of copper oxygen-enriched double-side melting furnace - Google Patents
Autogenous smelting achievement method of copper oxygen-enriched double-side melting furnace Download PDFInfo
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Abstract
The invention provides an autogenous smelting achievement method of a copper oxygen-enriched double-side melting furnace. The method is characterized in that a 'Fubon furnace' is taken as a smelting device, and the autogenous smelting process of which the fuel rate is smaller than 1% is achieved by controlling the parameters such as primary air oxygen-enriched concentration, charged copper concentrate ingredients, cooling water temperature difference, secondary air and tertiary air quantities, negative pressure inside the furnace and the like. Thus, an energy source is saved.
Description
Technical field
The present invention relates to the processing method of technical field of non-ferrous metallurgy, particularly the pyritic smelting implementation method of the two side-blown smelting furnace process copper ore concentrates of a kind of copper oxygen enrichment.
Background technology
The oxygen enrichment bilateral that a series of features, particularly developed recently such as copper oxygen-enriched side-blowing smelting technique has that adaptability to raw material is strong, dust rate is little, simple to operate and facility investment is few are got up blows and fuses sweetening process, and Copper making field is developed rapidly at home.Authorized on July 17th, 2013 by State Intellectual Property Office, the patent No. is that the oxygen-enriched side-blowing bath copper smelting furnace utility model patent of ZL201220422805.1 belongs to side-blown converter scope through association of China Non-Ferrous Metals Industry qualification called after " Fu Banglu ".
In " Fu Banglu " production run, controlling First air oxygen-rich concentration is 65% ~ 70%, and the ratio of bunker coal amount and copper ore concentrates amount and fuel rate are 4.5%, and cooling water inflow is 600m
3/ h, cooling range is 3.5 DEG C.It is low that this kind of operation also exists oxygen utilization rate, fails to make full use of the reaction heat of copper ore concentrates, fuel rate is high, exhaust gas volumn is large, comprehensive energy consumption is high, water coolant takes away the unfavorable factor that the restrictions " Fu Banglu " such as heat is large are popularized in an all-round way.
Summary of the invention
The object of the invention is the unfavorable factor promoted for above-mentioned restriction " Fu Banglu ", provide a kind of with " Fu Banglu " for carrier, realize the method for copper ore concentrates pyritic smelting.
In order to realize object of the present invention, provide the two side-blown smelting furnace pyritic smelting implementation method of a kind of copper oxygen enrichment, described method is melting equipment with Fu Banglu, and comprises the following steps: be deployed into stove copper ore concentrates and meet H
2o≤8%, Fe+S>=50%, SiO
2be the requirement of 12% ~ 14%, copper ore concentrates is transported to rich nation stove furnace roof after belt weighing metering, and joins molten bath in stove continuously, and the fuel used is common coal cinder; Controlling First air oxygen-rich concentration by regulating the ratio of pressurized air and oxygen generating station oxygen is more than 80%; By switch eye of wind, control primary air pressure is 85 ~ 95kpa, and oxygen ore deposit ratio is 120 ~ 140Nm
3/ ton ore deposit; Adjustment body of heater cooling water amount is 500m
3/ h, by adjusting state modulator water temperature difference≤1.5 DEG C of cold in-water temperature and smelting slag slag type; Be 4% for foundation with flue gas oxygen content, adjustment secondary air and tertiary air quantity are 7000 ~ 9000Nm
3/ h, by regulating interchanger aperture to control air temperature>=150 DEG C, is negative pressure-20pa in stove.
Embodiment
According to embodiments of the invention, provide the two side-blown smelting furnace pyritic smelting implementation method of a kind of copper oxygen enrichment, it is characterized in that with " Fu Banglu " for melting equipment, by controlling First air oxygen-rich concentration, to enter in stove copper ore concentrates composition, cooling range, secondary air and tertiary air quantity and stove the parameters such as negative pressure, thus realize the pyritic smelting process of fuel rate < 1%, and fusion process is steadily reliable.
Specifically, comprise the following steps according to the two side-blown smelting furnace pyritic smelting implementation method of the copper oxygen enrichment of the embodiment of the present invention:
(1) be deployed into stove copper ore concentrates and meet following requirement: H
2o≤8%, Fe+S>=50%, SiO
2content is 12% ~ 14%, and copper ore concentrates is transported to " Fu Banglu " furnace roof together with fuel after belt weighing metering, and joins molten bath in stove continuously, and the fuel used is common coal cinder;
(2) be more than 80% by regulating the ratio of pressurized air and oxygen generating station oxygen to control First air oxygen-rich concentration;
(3) by switch eye of wind, control primary air pressure is 85 ~ 95kpa, oxygen ore deposit ratio (First air oxygen level-fuel oxygen-consumption)/with copper ore concentrates weight) be 120 ~ 140Nm
3/ ton ore deposit;
(4) adjusting body of heater cooling water inflow is 500m
3/ h, by adjustment state modulator water temperature difference≤1.5 DEG C such as cold in-water temperature and smelting slag slag type;
(5) be 4% for foundation with flue gas oxygen content, adjustment secondary air and tertiary air quantity are 7000 ~ 9000Nm
3/ h, by regulating interchanger aperture to control air temperature>=150 DEG C, controlling negative pressure in stove is-20pa.
Generate matte and smelting slag by reacting above, be separated because the two density is different, smelting slag carries out slow cooling, is sent to afterwards and selects factory's ore dressing.Produce matte and be sent to and bessemerize.
Below by specific embodiment, the two side-blown smelting furnace pyritic smelting implementation method of copper oxygen enrichment according to the present invention is described in detail.
Embodiment 1
Adopt " Fu Banglu " to be smelting apparatus, controlling First air oxygen-rich concentration is 80%, and primary air pressure is 91.5kpa; Entering stove copper ore concentrates composition is: H
2o is 8.05%, Fe+S>=50.94%, SiO
2be 12.19%.Oxygen ore deposit is than being 133Nm
3/ ton ore deposit, cooling water inflow is 510m
3/ h, water temperature difference is 1.5 DEG C; Secondary air and tertiary air quantity are 8025Nm
3/ h, air temperature is 153 DEG C, and in stove, negative pressure is-25pa.Carry out oxygen-enriched air smelting to copper ore concentrates, in stove, smelting slag temperature is 1223 DEG C, and fuel rate is 0.98%, and discard slag with copper is 55.2%.
Embodiment 2
Adopt " Fu Banglu " to be smelting apparatus, controlling First air oxygen-rich concentration is 81%, and primary air pressure is 89.2kpa; Entering stove copper ore concentrates composition is: H
2o is 7.97%, Fe+S>=50.37%, SiO
2be 12.31%; Oxygen ore deposit is than being 135Nm
3/ ton ore deposit; Cooling water inflow is 508m
3/ h, water temperature difference is 1.4 DEG C; Secondary air and tertiary air quantity are 7983Nm
3/ h, air temperature is 155 DEG C, and in stove, negative pressure is-21pa.Carry out oxygen-enriched air smelting to copper ore concentrates, in stove, smelting slag temperature is 1219 DEG C, and fuel rate is 0.94%, and discard slag with copper is 54.9%.
Embodiment 3
Adopt " Fu Banglu " to be smelting apparatus, controlling First air oxygen-rich concentration is 81.5%, and primary air pressure is 88.6kpa; Entering stove copper ore concentrates composition is: H
2o is 7.81%, Fe+S>=51.24%, SiO
2be 13.01%.Oxygen ore deposit is than being 137Nm
3/ ton ore deposit; Cooling water inflow is 499m
3/ h, water temperature difference is 1.3 DEG C; Secondary air and tertiary air quantity are 7799Nm
3/ h, air temperature is 159 DEG C, and in stove, negative pressure is-18pa.Carry out oxygen-enriched air smelting to copper ore concentrates, in stove, smelting slag temperature is 1235 DEG C, and fuel rate is 0.89%, and discard slag with copper is 55.6%.
Claims (1)
1. the two side-blown smelting furnace pyritic smelting implementation method of copper oxygen enrichment, described method is melting equipment with Fu Banglu, and comprises the following steps:
Be deployed into stove copper ore concentrates and meet H
2o≤8%, Fe+S>=50%, SiO
2be the requirement of 12% ~ 14%, copper ore concentrates is transported to rich nation stove furnace roof after belt weighing metering, and joins molten bath in stove continuously, and the fuel used is common coal cinder;
First air oxygen-rich concentration is controlled for being greater than 80% by regulating the ratio of pressurized air and oxygen generating station oxygen;
By switch eye of wind, control primary air pressure is 85 ~ 95kpa, and oxygen ore deposit ratio is 120 ~ 140Nm
3/ ton ore deposit;
Adjustment body of heater cooling water amount is 500m
3/ h, by adjusting state modulator water temperature difference≤1.5 DEG C of cold in-water temperature and smelting slag slag type;
Be 4% for foundation with flue gas oxygen content, adjustment secondary air and tertiary air quantity are 7000 ~ 9000Nm
3/ h, by regulating interchanger aperture to control air temperature>=150 DEG C, is negative pressure-20pa in stove.
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| CN201310666485.3A CN103695660B (en) | 2013-12-10 | 2013-12-10 | Autogenous smelting achievement method of copper oxygen-enriched double-side melting furnace |
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| CN103695660B true CN103695660B (en) | 2015-02-04 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851518A (en) * | 2012-08-24 | 2013-01-02 | 赤峰富邦铜业有限责任公司 | Fubang oxygen-enriched side-blown bath copper smelting furnace and operation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102851518A (en) * | 2012-08-24 | 2013-01-02 | 赤峰富邦铜业有限责任公司 | Fubang oxygen-enriched side-blown bath copper smelting furnace and operation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "富邦炉"提高床能力及降低渣含铜生产实践;罗银华等;《有色矿冶》;20130228;第29卷(第1期);第36～38页 * |
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