CN114525414A - Method for distinguishing ore blending scheme in one-step copper smelting - Google Patents
Method for distinguishing ore blending scheme in one-step copper smelting Download PDFInfo
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- CN114525414A CN114525414A CN202210229288.4A CN202210229288A CN114525414A CN 114525414 A CN114525414 A CN 114525414A CN 202210229288 A CN202210229288 A CN 202210229288A CN 114525414 A CN114525414 A CN 114525414A
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- 239000010949 copper Substances 0.000 title claims abstract description 87
- 238000002156 mixing Methods 0.000 title claims abstract description 83
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 77
- 238000003723 Smelting Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 49
- 239000002994 raw material Substances 0.000 claims abstract description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 23
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 8
- 229910052947 chalcocite Inorganic materials 0.000 claims description 25
- 229910052683 pyrite Inorganic materials 0.000 claims description 18
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 18
- 229910052681 coesite Inorganic materials 0.000 claims description 15
- 229910052906 cristobalite Inorganic materials 0.000 claims description 15
- 239000011028 pyrite Substances 0.000 claims description 15
- 229910052682 stishovite Inorganic materials 0.000 claims description 15
- 229910052905 tridymite Inorganic materials 0.000 claims description 15
- 229910052951 chalcopyrite Inorganic materials 0.000 claims description 14
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 claims description 14
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 5
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052960 marcasite Inorganic materials 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 238000012850 discrimination method Methods 0.000 abstract description 4
- 238000005272 metallurgy Methods 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- 238000007664 blowing Methods 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910017082 Fe-Si Inorganic materials 0.000 description 4
- 229910017133 Fe—Si Inorganic materials 0.000 description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- 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
- C22B15/003—Bath smelting or converting
- C22B15/0041—Bath smelting or converting in converters
- C22B15/0043—Bath smelting or converting in converters in rotating converters
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of metallurgy, and provides a method for judging an ore blending scheme in copper smelting in one step. The discrimination method of the present invention includes: performing phase analysis on the one-step copper smelting raw material to obtain the phase composition of the one-step copper smelting raw material; according to the set mass ratio of the iron element to the silicon dioxide (Fe/SiO)2) Carrying out ore blending on the raw materials for the one-step copper smelting to obtain an ore blending scheme; based on a reaction equation and a Gibbs free energy minimum principle, carrying out balance calculation on the ore blending scheme to obtain a reaction product parameter and a slag parameter of the ore blending scheme; the reaction product parameters include copper direct yield; the slag parameter comprises a slag yield; when the direct copper yield is more than or equal to 95 percent and the slag yield is less than or equal to 47 percent, the set Fe/SiO is determined to be available2The ore blending scheme of (1) is a desirable ore blending scheme. The method can preliminarily judge the ore blending scheme of the raw material for one-step copper smelting, further screen out a better ore blending scheme, reduce the trial and error cost of one-step copper smelting, and improve the one-step copper smeltingEfficiency.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a method for judging an ore blending scheme in one-step copper smelting.
Background
The pyrometallurgical copper smelting is used for treating various copper concentrates, scrap copper and the like in the traditional copper smelting processThe smelting-blowing is mainly performed in the process, and the application of smelting the blister copper by a one-step method is less. Along with the stricter requirements of environmental protection and energy conservation and emission reduction, the one-step copper smelting is adopted, SO that the heat loss and SO released by sulfide oxidation are avoided2The process has the characteristics of strengthening the smelting process, improving the productivity, reducing the fuel consumption and the production cost, simplifying the smelting process and the like, and becomes a research focus of the pyrometallurgical copper smelting industry.
In the one-step copper smelting process, chalcocite is mostly selected as a raw material, but SiO in the chalcocite2The content of Fe is high, the content of Fe is low, and the problems of high slag viscosity, difficult slag-metal separation, high slag-copper content and the like can be caused if the Fe is directly used for one-step smelting. In the actual smelting, the oriented chalcocite is generally adopted, the chalcopyrite or the pyrite is added, the proper iron-silicon ratio is adjusted, the fluxing agent is properly added, and the slag viscosity is reduced to achieve the purpose of one-step smelting. However, even if the iron-silicon ratio is properly adjusted, the viscosity of the finally obtained slag may be relatively high, which affects the final copper smelting efficiency.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for determining an ore blending scheme in copper smelting in one step. The discrimination method provided by the invention can preliminarily judge the ore blending scheme of the raw material for one-step copper smelting, so that a better ore blending scheme can be quickly screened out, the trial and error cost of one-step copper smelting is reduced, and the one-step copper smelting efficiency is improved.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a method for distinguishing an ore blending scheme in copper smelting in one step, which comprises the following steps: performing phase analysis on the one-step copper smelting raw material to obtain the phase composition of the one-step copper smelting raw material; the one-step copper smelting raw material comprises chalcocite and yellow ore, wherein the yellow ore comprises one or two of the chalcopyrite and the pyrite; according to the set mass ratio of the iron element to the silicon dioxide (Fe/SiO)2) Carrying out ore blending on the raw materials for the one-step copper smelting to obtain an ore blending scheme; carrying out balance calculation on the ore blending scheme based on a reaction equation of the ore blending scheme and a Gibbs free energy minimum principle to obtain a reaction product parameter and a slag parameter of the ore blending scheme; the reactionThe product parameters include copper direct yield; the slag parameter comprises a slag yield; when the direct copper yield is more than or equal to 95 percent and the slag yield is less than or equal to 47 percent, the set Fe/SiO is determined to be available2The ore blending scheme of (1) is a desirable ore blending scheme.
Preferably, the phase composition of the one-step copper smelting raw material comprises Cu2S、Cu2O、FeS2、FeO、SiO2、CaO、MgO、Al2O3、Fe3O4And Cu.
The invention provides a method for distinguishing an ore blending scheme in copper smelting in one step, which comprises the following steps: performing phase analysis on the one-step copper smelting raw material to obtain the phase composition of the one-step copper smelting raw material; the one-step copper smelting raw material comprises chalcocite and yellow ore, wherein the yellow ore comprises one or two of the chalcopyrite and the pyrite; according to the setting of Fe/SiO2Carrying out ore blending on the raw materials for the one-step copper smelting to obtain an ore blending scheme; carrying out balance calculation on the ore blending scheme based on a reaction equation of the ore blending scheme and a Gibbs free energy minimum principle to obtain a reaction product parameter and a slag parameter of the ore blending scheme; the reaction product parameters include copper direct yield; the slag parameter comprises a slag yield; when the direct copper yield is more than or equal to 95 percent and the slag yield is less than or equal to 47 percent, the set Fe/SiO is determined to be available2The ore blending scheme of (1) is a desirable ore blending scheme. The method can preliminarily judge the ore blending scheme of the raw material for one-step copper smelting, so that a better ore blending scheme can be screened out, the trial and error cost of one-step copper smelting is reduced, and the one-step copper smelting efficiency is improved.
Detailed Description
The invention provides a method for distinguishing an ore blending scheme in copper smelting in one step, which comprises the following steps:
performing phase analysis on the one-step copper smelting raw material to obtain the phase composition of the one-step copper smelting raw material; the one-step copper smelting raw material comprises chalcocite and yellow ore, wherein the yellow ore comprises one or two of the chalcopyrite and the pyrite;
according to the setting of Fe/SiO2Carrying out ore blending on the raw materials for the one-step copper smelting to obtain an ore blending scheme;
carrying out balance calculation on the ore blending scheme based on a reaction equation of the ore blending scheme and a Gibbs free energy minimum principle to obtain a reaction product parameter and a slag parameter of the ore blending scheme;
the reaction product parameters include copper direct yield;
the slag parameter comprises a slag yield;
when the direct copper yield is more than or equal to 95 percent and the slag yield is less than or equal to 47 percent, the set Fe/SiO is determined to be available2The ore blending scheme of (1) is a desirable ore blending scheme.
In the present invention, the starting materials used in the present invention are preferably commercially available products unless otherwise specified.
Phase analysis is carried out on the one-step copper smelting raw material to obtain the phase composition of the one-step copper smelting raw material; the one-step copper smelting raw material comprises chalcocite and yellow ore, and the yellow ore comprises one or two of the chalcopyrite and the pyrite.
In the invention, before phase analysis is carried out on the one-step copper smelting raw material, the one-step copper smelting raw material is preferably ground; the grinding is preferably carried out on a grinder; in the present invention, the parameters of the grinding are not particularly limited as long as the particle size of the raw material for copper smelting in one step after grinding can be made 200 mesh or more.
The operation of the phase analysis is not particularly limited in the present invention as long as the phase composition of the one-step copper smelting raw material can be obtained. In the present invention, the phase composition of the one-step copper smelting raw material preferably includes Cu2S、Cu2O、FeS2、FeO、SiO2、CaO、MgO、Al2O3、Fe3O4And Cu.
After the phase composition of the raw material for one-step copper smelting is obtained, the invention sets the Fe/SiO ratio2And (4) carrying out ore blending on the raw materials for the one-step copper smelting to obtain an ore blending scheme.
In the present invention, the Fe/SiO2Referred to as the iron-silicon ratio. The invention is to the Fe/SiO2The numerical value of (A) is not particularly limited, and those skilled in the art can distinguish Fe/SiO according to the actual condition2The value is set.
After the ore blending scheme is obtained, the method carries out balance calculation on the ore blending scheme based on a reaction equation of the ore blending scheme and a Gibbs free energy minimum principle to obtain a reaction product parameter and a slag parameter of the ore blending scheme.
In the invention, after the ore blending scheme is determined, the proportion of the one-step copper smelting raw material with a fixed phase is determined, the composition of the phase contained in the raw material is determined, the reaction equation of the one-step copper smelting raw material is determined in the smelting process, and the reaction product parameter and the slag parameter of the ore blending scheme can be obtained by performing equilibrium calculation based on the Gibbs free energy minimum principle.
In the present invention, the reaction equation preferably includes:
S2+2O2＝2SO2 ΔG＝-722600.7+145.337T (3)；
FeS+3Fe3O4+5SiO2＝5(2FeO·SiO2)+SO2 ΔG＝191336.2-139.252T (8)；
FeS+Cu2O＝FeO+Cu2S ΔG＝-169053.3+31.272T (10)；
Cu2S+2Cu2O＝6Cu+SO2 ΔG＝43467.6-65.371T (11)。
in the present invention, the reaction product parameters include copper direct yield. In the present invention, the reaction product parameters preferably further include the composition of the reaction product.
In the present invention, the slag parameter includes a slag yield. In the present invention, the slag parameters preferably further include slag composition and slag theoretical viscosity. In the invention, the slag theoretical viscosity is preferably obtained through the obtained slag composition, slag blending is carried out, and the viscosity of the blended slag is measured by a viscosity analyzer, namely the slag theoretical viscosity.
After obtaining the reaction product parameters and slag parameters of the ore blending scheme, the invention is based on: when the direct copper yield is more than or equal to 95 percent and the slag yield is less than or equal to 47 percent, the set Fe/SiO is determined to be available2The ore blending scheme of (1) is a desirable ore blending scheme.
The method for determining the ore blending plan in the one-step copper smelting provided by the present invention is described in detail with reference to the following examples, but the method should not be construed as limiting the scope of the present invention.
Example 1
The method for distinguishing the ore blending scheme in the one-step copper smelting comprises the following steps of:
grinding the chalcocite and the brass ore by a mine grinder to ensure that the particle size of the chalcocite and the chalcopyrite is 200 meshes.
The phase analysis of the ground chalcocite and chalcopyrite resulted in the phase compositions of chalcocite and chalcopyrite shown in table 1.
TABLE 1 phase composition of chalcocite and chalcopyrite
According to Fe/SiO20.4, 0.6 and 0.9 for chalcocite and chalcopyrite to obtain Fe/SiO2Ore blending schedules of 0.4, 0.6 and 0.9.
When Fe/SiO2At 0.4, 0.6 and 0.9, the reaction equations involved in the smelting of chalcocite and chalcopyrite include:
S2+2O2＝2SO2 ΔG＝-722600.7+145.337T (3)；
FeS+3Fe3O4+5SiO2＝5(2FeO·SiO2)+SO2 ΔG＝191336.2-139.252T (8)；
FeS+Cu2O＝FeO+Cu2S ΔG＝-169053.3+31.272T (10)；
Cu2S+2Cu2O＝6Cu+SO2 ΔG＝43467.6-65.371T (11)。
and (4) carrying out balance calculation based on the Gibbs free energy minimum principle to obtain reaction product parameters and slag parameters of each ore blending scheme, wherein the results are shown in tables 2-3.
TABLE 2 reaction product parameters and slag parameters obtained for each ore blending protocol
TABLE 3 slag compositions obtained for each ore blending scheme
As can be seen from tables 2 to 3, when the Fe-Si ratios are 0.4, 0.6 and 0.9, the direct copper yield is more than or equal to 95%, and the slag yield is less than or equal to 47%, which indicates that the Fe-Si ratios of 0.4, 0.6 and 0.9 can be used as the ore blending schemes of chalcocite and chalcopyrite with the phase compositions shown in Table 1.
In order to verify the accuracy of the distinguishing method, the three ore blending schemes are actually smelted;
the parameters of the actual smelting comprise:
mixing chalcocite, chalcopyrite and fluxing agent calcium oxide, and smelting in a bottom blowing furnace at 1300 ℃ for 30min under the condition of oxygen-enriched bottom blowing to obtain actual reactants and actual molten slag.
The addition amount of the fluxing agent calcium oxide is 1.1 times of the mass of the excessive silicon dioxide (the excessive silicon dioxide refers to the amount of the residual silicon dioxide after ore blending according to the iron-silicon ratio); the oxygen volume used in oxygen-enriched bottom blowing is 1.2 times of the theoretical oxygen demand (the theoretical oxygen is the oxygen required for fully oxidizing the sulfur-containing compounds in the ore blending scheme), and the oxygen concentrations are controlled to be 50%, 70%, 85%, 99% and 21%, respectively.
The parameters of the actual reactants and the actual slag obtained in each ore blending scheme are shown in table 4.
TABLE 4
As can be seen, the result obtained during verification is consistent with the predicted discrimination result, which indicates that the discrimination method provided by the invention is feasible.
Example 2
The method for distinguishing the ore blending scheme in the one-step copper smelting comprises the following steps of:
the chalcocite and pyrite were ground with a grinder to obtain a particle size of 200 mesh for the chalcocite and pyrite.
The phase analysis of the ground chalcocite and pyrite resulted in the phase compositions of chalcocite and pyrite shown in table 5.
TABLE 5 phase composition of chalcocite and pyrite
According to Fe/SiO20.6, 0.9 and 1.2 for chalcocite and pyrite to obtain Fe/SiO2Ore blending schedules of 0.6, 0.9 and 1.2.
When Fe/SiO2At 0.6, 0.9 and 1.2, the reaction equations involved in the smelting of chalcocite and pyrite were the same as in example 1.
And carrying out balance calculation based on the Gibbs free energy minimum principle to obtain reaction product parameters and slag parameters of each ore blending scheme, wherein the results are shown in tables 6-7.
TABLE 6 reaction product parameters and slag parameters obtained for each ore blending protocol
TABLE 7 slag compositions obtained for each ore blending scheme
As can be seen from tables 6-7, when the Fe-Si ratios are 0.6, 0.9 and 1.2, the direct copper yield is more than or equal to 95%, and the slag yield is less than or equal to 47%, which indicates that the Fe-Si ratios of 0.6, 0.9 and 1.2 can be used as the ore blending schemes of the chalcocite and the brass with the phase compositions shown in Table 5.
In order to verify the accuracy of the distinguishing method, the three ore blending schemes are actually smelted;
the actual smelting parameters comprise:
mixing chalcocite, pyrite and fluxing agent calcium oxide, and smelting in a bottom blowing furnace at 1300 ℃ for 30min under the condition of oxygen-enriched bottom blowing to obtain actual reactants and actual molten slag.
The addition amount of the fluxing agent calcium oxide is 1.1 times of the mass of the redundant silicon dioxide; the volume of oxygen used by the oxygen-enriched bottom blowing is 1.1 or 1.2 times of theoretical oxygen demand (the amount of oxygen required by sulfur elements in each ore blending scheme to be converted into sulfur dioxide), and the oxygen concentration is controlled to be 50%, 70%, 85%, 99% and 21% respectively.
The parameters of the actual reactants and the actual slag obtained in each ore blending protocol are shown in table 8.
TABLE 8
As can be seen, the result obtained during verification is consistent with the predicted discrimination result, which shows that the discrimination method provided by the invention has feasible results.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The method for distinguishing the ore blending scheme in the one-step copper smelting is characterized by comprising the following steps of:
performing phase analysis on the one-step copper smelting raw material to obtain the phase composition of the one-step copper smelting raw material; the raw materials for one-step copper smelting comprise chalcocite and yellow ore; the pyrite comprises one or two of chalcopyrite and pyrite;
carrying out ore blending on the copper smelting raw materials in one step according to the set mass ratio of the iron element and the silicon dioxide to obtain an ore blending scheme;
carrying out balance calculation on the ore blending scheme based on a reaction equation of the ore blending scheme and a Gibbs free energy minimum principle to obtain a reaction product parameter and a slag parameter of the ore blending scheme;
the reaction product parameters include copper direct yield;
the slag parameter comprises a slag yield;
and when the direct copper yield is more than or equal to 95 percent and the slag yield is less than or equal to 47 percent, determining that the ore blending scheme with the set mass ratio of the iron element to the silicon dioxide is an available ore blending scheme.
2. The method according to claim 1, wherein the phase composition of the raw material for single-stage copper smelting includes Cu2S、Cu2O、FeS2、FeO、SiO2、CaO、MgO、Al2O3、Fe3O4And Cu.
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| CN104988332A (en) * | 2015-07-06 | 2015-10-21 | 中南大学 | One-step copper smelting process and device |
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| CN104988332A (en) * | 2015-07-06 | 2015-10-21 | 中南大学 | One-step copper smelting process and device |
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| Title |
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| 郭祥: "辉铜矿混黄铜矿短流程炼铜理论研究及最优渣型实验验证", 《中国优秀硕士学位论文全文数据库》 * |
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