Oxidized-copper sulfide concentrate smelting furnace slag viscosity prediction method and application thereof

Abstract

The application relates to the technical field of metallurgical process control, in particular to a method for predicting the viscosity of smelting slag of oxidized-copper sulfide concentrate and application thereof. Based on the mass of specific raw material components in the slag of the to-be-detected oxidized-copper sulfide concentrate after oxygen-enriched top-blown smelting, the reference viscosity value of the slag is calculated by combining the pre-set smelting temperature, the pre-factor and the viscous activation energy; then the volume fraction of Fe3O4 obtained after oxidation is calculated according to the mass of the specific raw material components of iron; the predicted viscosity value of the slag is calculated by substituting the volume fraction of Fe3O4 and the reference viscosity value into an expression, which provides a basis for subsequent regulation and control of the smelting process based on the predicted viscosity value; and the problem of how to predict the viscosity of the slag of the oxidized-copper sulfide concentrate to optimize the smelting process is solved.

Description

Technical Field

[0001] This application relates to the field of metallurgical process control technology, and in particular to a method for predicting the viscosity of smelting slag in copper oxide-sulfide concentrate and its application. Background Technology

[0002] Copper sulfide concentrate is the core raw material in the oxygen-enriched intensified matte smelting process. However, with the gradual depletion of high-quality copper sulfide ore resources, copper sulfide concentrate is facing difficulties such as declining grade, increasing impurity content, and diversified composition. These factors pose a serious challenge to the production efficiency of matte smelting and the quality of copper matte products.

[0003] In related technical solutions, existing processes use copper oxide concentrate to replace part of the copper sulfide concentrate in the raw materials for matte smelting. Taking advantage of the characteristics of oxygen and silica components in copper oxide concentrate that can act as oxidants and fluxes in the matte smelting stage, an oxygen-enriched co-processing matte smelting of copper oxide and copper sulfide concentrate is proposed. This process not only significantly reduces the cost of raw materials and additives for matte smelting, but also reduces energy consumption by utilizing the large amount of heat released by the reaction of copper oxide and copper sulfide concentrate.

[0004] However, despite the significant advantages of the co-smelting process of copper oxide concentrate and copper sulfide concentrate, one of the technical challenges that still exists in this process is the excessive viscosity of the slag produced by the high ratio of copper oxide and copper sulfide concentrate. This high viscosity of the slag produced by the high ratio of copper oxide and copper sulfide concentrate can easily lead to an unreasonable slag shape and excessive copper content in the slag.

[0005] In view of this, this application proposes a method for predicting the viscosity of slag in the smelting of copper oxide-sulfide concentrate. The aim is to achieve real-time prediction of the slag viscosity of copper oxide-sulfide concentrate during the smelting process, so as to dynamically adjust the process parameters of the smelting process based on the predicted slag viscosity, thereby ensuring the smooth progress of the synergistic smelting process of oxygen-sulfide concentrate under a high copper oxide concentrate ratio. Summary of the Invention

[0006] The main objective of this application is to provide a method for predicting the viscosity of smelting slag in copper oxide-sulfide concentrate, aiming to solve the problem of how to predict the viscosity of slag in copper oxide-sulfide concentrate to optimize the smelting process.

[0007] To achieve the above objectives, this application provides a method for predicting the viscosity of smelting slag from copper oxide-sulfide concentrate, the method comprising:

[0008] The mass of the target raw material components in the slag of the copper oxide-sulfide concentrate to be tested after oxygen-enriched top-blown matte smelting is determined, wherein the target raw material components include CaO, SiO2, MgO, Al2O3 and Fe;

[0009] The reference viscosity value of the slag is calculated based on the mass of the target raw material components, and the volume fraction of Fe3O4 in the slag is determined based on the mass of Fe and the amount of oxygen-enriched air input during smelting. The reference viscosity value is obtained based on the smelting temperature, the pre-exponential factor of the slag, and the corresponding viscous activation energy. The pre-exponential factor and the viscous activation energy are calculated based on the mass of the target raw material components.

[0010] Based on the volume fraction of Fe3O4 and the baseline viscosity value, the predicted viscosity value of the slag is determined, wherein the calculation expression for the predicted viscosity value is:

[0011]

[0012] In the formula, This represents the volume fraction of Fe3O4. This is the baseline viscosity value.

[0013] Optionally, the formula for calculating the reference viscosity value is:

[0014]

[0015] In the formula, A is the pre-exponential factor; B is the viscosity activation energy (J / mol); and T is the melting temperature.

[0016] in:

[0017]

[0018]

[0019] In the formula, m is the viscosity parameter. For the viscosity activation energies of different basic oxides, X1 represents the mole fraction of oxide i in the melt; i = 1, 2, 3, where X1 is the acidic oxide, X2 is the basic oxide, and X3 is the molar mass of the amphoteric oxide in the melt.

[0020] Optionally, the expression for calculating the viscosity parameter m is:

[0021]

[0022] in, For each type of oxide i, there are coefficients. Let i be the mole fraction of oxide i in the melt;

[0023] The alkaline oxide The calculation expression is:

[0024]

[0025] in:

[0026]

[0027]

[0028] In the formula, Here are the parameters for a ternary system, where M is a basic oxide. This represents the mole fraction of the acidic oxide in the melt. X1 represents the mole fraction of the basic oxide in the melt; X2 represents the mole fraction of the amphoteric oxide in the melt.

[0029] Optionally, the formula for calculating the volume fraction of Fe3O4 is:

[0030]

[0031] in:

[0032]

[0033] In the formula, This represents the volume fraction of Fe3O4. Mass of Fe in slag; The oxidation rate of Fe; k1 represents the amount of oxygen-enriched air input during smelting; k1 and k2 are both oxidation rate coefficients.

[0034] Furthermore, to achieve the above objectives, this application also provides a method for controlling the viscosity of smelting slag-based copper oxide-sulfide concentrate, the method comprising the following steps:

[0035] Obtain the current predicted viscosity value based on the viscosity prediction method for smelting slag of copper oxide-sulfide concentrate as described in any of the preceding items;

[0036] When the current predicted viscosity value is greater than the preset viscosity threshold, the flux content and / or the amount of oxygen-enriched air input are adjusted so that the current predicted viscosity value obtained after adjustment is updated to be less than or equal to the preset viscosity threshold.

[0037] Optionally, adjusting the flux content includes:

[0038] Increase the CaO content in the flux to raise the basicity of the slag to 0.7-1.2.

[0039] Optionally, adjusting the input oxygen-enriched air volume includes:

[0040] Adjust the oxygen-enriched air volume to the oxidation rate of Fe. Less than or equal to the preset oxidation rate threshold.

[0041] Furthermore, to achieve the above objectives, this application also provides an oxygen-enriched top-blown matte smelting method based on the viscosity of smelting slag, the method comprising the following steps:

[0042] Copper oxide concentrate is added at 30-60% of the mass of copper sulfide concentrate to obtain copper oxide-sulfide concentrate, wherein the Cu content in the copper oxide-sulfide concentrate is 20-30%;

[0043] The copper oxide-sulfide concentrate is added to an Isa furnace and smelted under oxygen-enriched top blowing at a temperature of 1100~1300℃ to obtain matte and slag with a grade of 56~65%. During the oxygen-enriched top blowing smelting process, the copper oxide-sulfide concentrate is regulated using the copper oxide-sulfide concentrate regulation method based on the viscosity of the smelting slag as described in any of the above claims, so that the current predicted viscosity value of the slag is less than or equal to a preset viscosity threshold.

[0044] In addition, to achieve the above objectives, this application also provides a computer system, the computer system comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, it implements the steps of the method for predicting the viscosity of smelting slag of copper oxide-sulfide concentrate as described in any of the preceding claims, or the method for controlling copper oxide-sulfide concentrate based on the viscosity of smelting slag as described in any of the preceding claims.

[0045] In addition, to achieve the above objectives, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method for predicting the viscosity of smelting slag of copper oxide-sulfide concentrate as described in any of the preceding claims, or the method for controlling copper oxide-sulfide concentrate based on the viscosity of smelting slag as described in any of the preceding claims.

[0046] This application has at least the following beneficial effects:

[0047] 1. Based on the mass of specific raw material components obtained in real time from the slag of the copper oxide-sulfide concentrate to be tested after oxygen-enriched top-blown matte smelting, combined with the pre-set smelting temperature, pre-exponential factor and viscosity activation energy, the reference viscosity value of the slag is calculated. Then, based on the determined mass of iron of the specific raw material components, the volume fraction of Fe3O4 obtained after oxidation is calculated. Based on the volume fraction of Fe3O4 and the reference viscosity value, the predicted viscosity value of the slag is calculated by substituting them into the expression, which provides a basis for subsequent control of the smelting process based on the predicted viscosity value.

[0048] 2. Based on the predicted viscosity value, the smelting process is controlled to ensure that the viscosity of the slag is in a low range, thereby enhancing the slag-matte separation in the synergistic smelting process under a high copper oxide concentrate ratio and reducing copper loss. Attached Figure Description

[0049] Figure 1 This is a schematic flowchart of the method for predicting the viscosity of smelting slag of copper oxide-sulfide concentrate involved in the embodiments of this application;

[0050] Figure 2 This is a schematic flowchart of the method for controlling the viscosity of smelting slag in copper oxide-sulfide concentrate according to the embodiments of this application.

[0051] Figure 3 This is a schematic diagram of the oxygen-enriched top-blown matte smelting method based on the viscosity of smelting slag involved in the embodiments of this application;

[0052] Figure 4 This is a schematic diagram of the hardware operating environment of the computer system involved in the embodiments of this application.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] To better understand the above technical solutions, exemplary embodiments of this disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0055] First Embodiment

[0056] Reference Figure 1 This embodiment provides a method for predicting the viscosity of smelting slag from copper oxide-sulfide concentrate, the method comprising the following steps:

[0057] S10, determine the mass of the target raw material components in the slag of the copper oxide-sulfide concentrate to be tested after oxygen-enriched top-blown matte smelting, wherein the target raw material components include CaO, SiO2, MgO, Al2O3 and Fe;

[0058] In some alternative implementations, the quality of the target raw material component can be determined in the following ways:

[0059] Refer to Table 1 below for the composition of the raw materials fed into the furnace:

[0060] Table 1. Composition of Raw Materials for Furnace

[0061]

[0062] In Table 1, S i For i different types of copper sulfide concentrate; gi Input mass for different types of copper sulfide concentrate (i=1,2,3…); Q j For j different types of copper oxide concentrate; h j Input mass of different types of copper oxide concentrate (j=1,2,3…); M SiO2 M represents the amount of silica added. CaO M represents the amount of CaO added. C M represents the amount of carbon incorporated. O2 A represents the oxygen intake volume. xy With B xy These represent the content of each component in copper sulfide concentrate and copper oxide concentrate, respectively.

[0063] Based on the information in Table 1 above, the following formulas for calculating the mass of the target raw material components are derived:

[0064] CaO (Slag) =(g1·A 11 +g2·A 21 +…+g i ·A i1 )+(h1·B 11 +h2·B 21 +…+h j ·B j1 )+M CaO

[0065] SiO 2(Slag) =(g1·A 12 +g2·A 22 +…+g i ·A i2 )+(h1·B 12 +h2·B 22 +…+h j ·B j2 )+M SiO2

[0066] MgO (Slag) =(g1·A 13 +g2·A 23 +…+g i ·A i3 )+(h1·B 13 +h2·B 23 +…+h j ·B j3 ) Al2O 3(Slag) =(g1·A 14 +g2·A 24 +…+g i ·A i4 )+(h1·B 14 +h2·B 24+…+h j ·B j4 )

[0067] In the formula, CaO (Slag) SiO 2(Slag) MgO (Slag) Al2O 3(Slag) These represent the masses of CaO, SiO2, MgO, and Al2O3 in the slag, respectively.

[0068] Assume the copper matte grade is ω1%; the iron content in the copper matte is ω2%; and the direct copper recovery rate is... k M (Matte) For matte quality; Cu (Total) Fe (Total) S (Total) Let Cu, Fe, and S be the total mass of the raw materials fed into the furnace, respectively, to obtain the following formula:

[0069] Cu (Total) =Σg i A i5 +Σh j B j5

[0070] Fe (Total) =Σg i A i6 +Σh j B j6

[0071] S (Total) = Σg i A i7 +Σh j B j7

[0072] M (Matte) =(Σg i A i5 +Σh j B j5 ) k / ω1%

[0073] Fe (Slag) =Σg i A i6 +Σh j B j6 -(Σg i A i5 +Σh j B j5 ) k·ω 1 % / ω 2 %

[0074] S20, calculate the reference viscosity value in the slag based on the mass of the target raw material component, and determine the volume fraction of Fe3O4 in the slag based on the mass of Fe and the amount of oxygen-enriched air input during smelting, wherein the reference viscosity value is obtained based on the smelting temperature, the pre-exponential factor corresponding to the slag, and the corresponding viscous activation energy, and the pre-exponential factor and the viscous activation energy are calculated based on the mass of the target raw material component;

[0075] In this embodiment, after obtaining the mass of each target raw material component, two quantities are calculated in real time: the reference viscosity value and the volume fraction of Fe3O4 in the slag.

[0076] The reference viscosity value is obtained based on the melting temperature, the pre-exponential factor corresponding to the slag, and the corresponding viscous activation energy. The pre-exponential factor and the viscous activation energy are calculated based on the mass of the target raw material components.

[0077] Further and optionally, the formula for calculating the reference viscosity value is:

[0078]

[0079] In the formula, A is the pre-exponential factor; B is the viscosity activation energy (J / mol); and T is the melting temperature.

[0080] in:

[0081]

[0082]

[0083] In the formula, m is the viscosity parameter. For the viscosity activation energies of different basic oxides, X1 represents the mole fraction of oxide i in the melt; i = 1, 2, 3, where X1 is the acidic oxide, X2 is the basic oxide, and X3 is the molar mass of the amphoteric oxide in the melt.

[0084] Further, and optionally, the expression for calculating the viscosity parameter m is:

[0085]

[0086] in, For each type of oxide i, there are coefficients. Let i be the mole fraction of oxide i in the melt;

[0087] In some alternative implementations, include: m Fe =0.665; m Ca =0.587;m Al =0.370; m Si =0.212.

[0088] The The calculation expression is:

[0089]

[0090] in:

[0091]

[0092]

[0093] In the formula, Here are the parameters for a ternary system, where M is a basic oxide. This represents the mole fraction of the acidic oxide in the melt. X1 represents the mole fraction of the basic oxide in the melt; X2 represents the mole fraction of the amphoteric oxide in the melt.

[0094] In some optional implementations, the values ​​of the ternary system parameters are shown in Table 2 below.

[0095] Table 2 Parameters of the ternary system

[0096]

[0097] In some alternative embodiments, the acidic oxide is sulfur dioxide (SiO2), the basic oxide includes CaO and MgO, and the amphoteric oxide is Al3O2.

[0098] The volume fraction of Fe3O4 is calculated using the following formula:

[0099]

[0100] in:

[0101]

[0102] In the formula, This represents the volume fraction of Fe3O4. The mass of Fe in the copper oxide-sulfide concentrate to be tested; The oxidation rate of Fe; k1 represents the amount of oxygen-enriched air input during smelting; k1 and k2 are both oxidation rate coefficients.

[0103] S30, based on the volume fraction of Fe3O4 and the reference viscosity value, determine the predicted viscosity value of the slag, wherein the calculation expression for the predicted viscosity value is:

[0104]

[0105] In the formula, This represents the volume fraction of Fe3O4. This is the baseline viscosity value.

[0106] In the technical solution provided in this embodiment, based on the mass of specific raw material components obtained in real time in the slag of the copper oxide-sulfide concentrate to be tested after oxygen-enriched top-blown matte smelting, combined with the pre-set smelting temperature, pre-exponential factor and viscosity activation energy, the reference viscosity value of the slag is calculated. Then, based on the determined mass of iron in the specific raw material components, the volume fraction of Fe3O4 obtained after oxidation is calculated. Based on the volume fraction of Fe3O4 and the reference viscosity value, the predicted viscosity value of the slag is calculated by substituting them into the expression, which provides a basis for subsequent control of the smelting process based on the predicted viscosity value.

[0107] Second Embodiment

[0108] As one implementation scheme, refer to Figure 2 This embodiment provides a method for controlling the viscosity of smelting slag in copper oxide-sulfide concentrate. Based on the smelting slag viscosity prediction of copper oxide-sulfide concentrate provided in the first embodiment, the method includes the following steps:

[0109] Step S100: Obtain the current predicted viscosity value obtained from the viscosity prediction method of the smelting slag of the copper oxide-sulfide concentrate.

[0110] Step S200: When the current predicted viscosity value is greater than the preset viscosity threshold, adjust the flux content and / or adjust the input oxygen-enriched air volume so that the adjusted current predicted viscosity value is updated to be less than or equal to the preset viscosity threshold.

[0111] In this embodiment, the predicted viscosity value obtained in the first embodiment is used as a criterion to regulate the smelting process of copper oxide-sulfide concentrate.

[0112] If the current predicted viscosity value calculated within the current cycle is greater than the preset viscosity threshold, adjust the flux content and / or adjust the input oxygen-enriched air volume so that the adjusted current predicted viscosity value is updated to be less than or equal to the preset viscosity threshold.

[0113] In some alternative implementations, the flux content can be adjusted by controlling the Isa furnace flux feeder, and the oxygen-enriched air volume can be adjusted by controlling the opening of the oxygen-enriched air valve.

[0114] Further and optionally, adjusting the flux content includes increasing the CaO content in the flux to raise the slag basicity to 0.7-1.2. The principle and purpose of this adjustment are: an appropriate amount of CaO can disrupt the complex silicate network structure, achieving the depolymerization of the silicate network; and CaO can lower the liquidus temperature of the copper slag, expanding the liquid phase region.

[0115] Further and optionally, adjusting the input oxygen-enriched air volume includes adjusting the oxygen-enriched air volume to the oxidation rate of Fe. The value should be less than or equal to the preset oxidation rate threshold. The principle and purpose of this adjustment are:

[0116] The Fe3O4 content depends on the amount of oxygen-enriched air used, using the Fe oxidation rate Threshold setting for oxygen-enriched air volume.

[0117] In some alternative implementations, a table can be created based on the correlation between the amount of oxygen-enriched air and the oxidation rate of Fe. The target amount of oxygen-enriched air that would make the oxidation rate of Fe less than a preset oxidation rate threshold can be determined by looking up the table.

[0118] In some alternative implementations, the preset oxidation rate threshold can be set to 0.35, which is an empirical value.

[0119] In some alternative implementations, step S100 is performed once every 30 seconds.

[0120] In the technical solution provided in this embodiment, the smelting process is controlled based on the predicted viscosity value to ensure that the viscosity of the slag is in a low range, thereby enhancing the slag-matte separation in the synergistic smelting process under a high copper oxide concentrate ratio and reducing copper loss.

[0121] Third Embodiment

[0122] As one implementation scheme, refer to Figure 3 This embodiment also provides an oxygen-enriched top-blown matte smelting method based on the viscosity of smelting slag, the method comprising the following steps:

[0123] S1000, copper oxide concentrate is added at 30-60% of the mass of copper sulfide concentrate to obtain copper oxide-sulfide concentrate, wherein the Cu content in the copper oxide-sulfide concentrate is 20-30%;

[0124] S2000, the copper oxide-sulfide concentrate is added to an Isa furnace at a temperature of 1100~1300℃ for oxygen-enriched top-blown smelting to obtain matte and slag with a grade of 56~65%. During the oxygen-enriched top-blown smelting process, the copper oxide-sulfide concentrate is regulated using the method for regulating the viscosity of the smelting slag as described in Example 2, so that the current predicted viscosity value of the slag is less than or equal to a preset viscosity threshold.

[0125] Fourth embodiment

[0126] Based on any of the above embodiments, in this embodiment, copper oxide concentrate and copper sulfide concentrate are blended according to Table 3:

[0127] Table 3. Raw material data

[0128]

[0129] (1) Calculate the Cu content of the mixed ore:

[0130] (1000×26.78%+500×26.66%+100×19.84%+200×22.44%+200×25.49%) / 2000=25.5%

[0131] (2) Set the smelting parameters as follows: Temperature: 1200℃; Target matte grade: 60%; Reduce oxygen-enriched air usage: 30 Nm 3 (10%); Predicted initial viscosity: 0.85 Pa·s (exceeds threshold);

[0132] (3) Viscosity control

[0133] (3.1) Calculation of slag composition:

[0134] CaO(Slag)=(1000×0.32%+500×1.32%)+(100×4.58%+200×1.20%+200×1.23%)+MSiO2=18.2 kg;

[0135] SiO2(Slag)=(1000×10.71%+500×5.70%)+(100×14.85%+200×14.58%+200×12.17%)=257.3 kg;

[0136] The initial alkalinity calculation yielded (CaO / SiO2) = 0.07.

[0137] (3.2) Control measures: Add flux M k 120 kg of ᵢO raises the alkalinity to 0.9.

[0138] (3.3) Viscosity recalculation:

[0139] The parameter m = 0.587 × X{Ca} + 0.212 × X{Si} = 0.42;

[0140] Activation energy B = 35.2 kJ / mol;

[0141] The reference viscosity η0 = 0.45 Pa·s;

[0142] Fe3O4 mass fraction f = 0.12;

[0143] The final viscosity was obtained as η = 0.75 Pa·s (≤0.8).

[0144] In this example, 1500 kg of copper sulfide concentrate and 500 kg of copper oxide concentrate are used. Based on the price of copper concentrate in Zambia, the unit price of copper sulfide concentrate is US$3000 / ton and the unit price of copper oxide concentrate is US$2500 / ton. The smelting of copper concentrate per ton can save US$125, or about 4.15%.

[0145] As one implementation scheme, Figure 4 This is a schematic diagram of the hardware operating environment of the computer system involved in the embodiments of this application.

[0146] like Figure 4 As shown, the computer system may include: a processor 1001, such as a CPU; a memory 1005; a user interface 1003; a network interface 1004; and a communication bus 1002. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be high-speed RAM or non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0147] Those skilled in the art will understand that Figure 4 The computer system architecture shown does not constitute a limitation on the computer system and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0148] like Figure 4As shown, the memory 1005, as a storage medium, may include an operating system, a network communication module, a user interface module, and computer programs. The operating system is a program that manages and controls the hardware and software resources of the computer system, as well as the operation of the computer programs and other software or programs.

[0149] exist Figure 4 In the computer system shown, the user interface 1003 is mainly used to connect to the terminal and communicate with the terminal; the network interface 1004 is mainly used to communicate with the backend server; and the processor 1001 can be used to call the computer program stored in the memory 1005.

[0150] In this embodiment, the computer system includes: a memory 1005, a processor 1001, and a computer program stored in the memory and executable on the processor, wherein:

[0151] When processor 1001 calls a computer program stored in memory 1005, it performs the following operations:

[0152] The mass of the target raw material components in the slag of the copper oxide-sulfide concentrate to be tested after oxygen-enriched top-blown matte smelting is determined, wherein the target raw material components include CaO, SiO2, MgO, Al2O3 and Fe;

[0153] The reference viscosity value of the slag is calculated based on the mass of the target raw material components, and the volume fraction of Fe3O4 in the slag is determined based on the mass of Fe and the amount of oxygen-enriched air input during smelting. The reference viscosity value is obtained based on the smelting temperature, the pre-exponential factor of the slag, and the corresponding viscous activation energy. The pre-exponential factor and the viscous activation energy are calculated based on the mass of the target raw material components.

[0154] Based on the volume fraction of Fe3O4 and the baseline viscosity value, the predicted viscosity value of the slag is determined, wherein the calculation expression for the predicted viscosity value is:

[0155]

[0156] In the formula, This represents the volume fraction of Fe3O4. This is the baseline viscosity value.

[0157] When processor 1001 calls a computer program stored in memory 1005, it performs the following operations:

[0158] The formula for calculating the reference viscosity value is as follows:

[0159]

[0160] In the formula, A is the pre-exponential factor; B is the viscosity activation energy (J / mol); and T is the melting temperature.

[0161] in:

[0162]

[0163]

[0164] In the formula, m is the viscosity parameter. For the viscosity activation energies of different basic oxides, X1 represents the mole fraction of oxide i in the melt; i = 1, 2, 3, where X1 is the acidic oxide, X2 is the basic oxide, and X3 is the molar mass of the amphoteric oxide in the melt.

[0165] When processor 1001 calls a computer program stored in memory 1005, it performs the following operations:

[0166] The expression for calculating the viscosity parameter m is:

[0167]

[0168] in, For each type of oxide i, there are coefficients. Let i be the mole fraction of oxide i in the melt;

[0169] The The calculation expression is:

[0170]

[0171] in:

[0172]

[0173]

[0174] In the formula, Here are the parameters for a ternary system, where M is a basic oxide. This represents the mole fraction of the acidic oxide in the melt. X1 represents the mole fraction of the basic oxide in the melt; X2 represents the mole fraction of the amphoteric oxide in the melt.

[0175] When processor 1001 calls a computer program stored in memory 1005, it performs the following operations:

[0176] The formula for calculating the volume fraction of Fe3O4 is as follows:

[0177]

[0178] in:

[0179]

[0180] In the formula, This represents the volume fraction of Fe3O4. Mass of Fe in slag; The oxidation rate of Fe; k1 represents the amount of oxygen-enriched air input during smelting; k1 and k2 are both oxidation rate coefficients.

[0181] In addition, when the processor 1001 calls the computer program stored in the memory 1005, it can also perform the following operations:

[0182] Obtain the current predicted viscosity value obtained from the viscosity prediction method for smelting slag of copper oxide-sulfide concentrate as described in any of the preceding items;

[0183] When the current predicted viscosity value is greater than the preset viscosity threshold, the flux content and / or the amount of oxygen-enriched air input are adjusted so that the current predicted viscosity value obtained after adjustment is updated to be less than or equal to the preset viscosity threshold.

[0184] In addition, when the processor 1001 calls the computer program stored in the memory 1005, it can also perform the following operations:

[0185] Increase the CaO content in the flux to raise the basicity of the slag to 0.7-1.2.

[0186] In addition, when the processor 1001 calls the computer program stored in the memory 1005, it can also perform the following operations:

[0187] Adjust the oxygen-enriched air volume to the oxidation rate of Fe. Less than or equal to the preset oxidation rate threshold.

[0188] Furthermore, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program includes program instructions and can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in a computer system to implement the process steps of the embodiments of the above methods.

[0189] Therefore, this application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method for predicting the viscosity of smelting slag of copper oxide-sulfide concentrate as described in the above embodiments, or the method for controlling copper oxide-sulfide concentrate based on the viscosity of smelting slag.

[0190] The computer-readable storage medium can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0191] It should be noted that, since the storage medium provided in the embodiments of this application is the storage medium used to implement the methods of the embodiments of this application, those skilled in the art can understand the specific structure and variations of the storage medium based on the methods described in the embodiments of this application, and therefore will not be repeated here. All storage media used in the methods of the embodiments of this application fall within the scope of protection of this application.

[0192] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0193] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0194] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0195] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0196] It should be noted that any reference signs placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. This application can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0197] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0198] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for predicting the viscosity of smelting slag in copper oxide-sulfide concentrate, characterized in that, The method includes the following steps: The mass of the target raw material components in the slag of the copper oxide-sulfide concentrate to be tested after oxygen-enriched top-blown matte smelting is determined, wherein the target raw material components include CaO, SiO2, MgO, Al2O3 and Fe; The reference viscosity value of the slag is calculated based on the mass of the target raw material components, and the volume fraction of Fe3O4 in the slag is determined based on the mass of Fe and the amount of oxygen-enriched air input during smelting. The reference viscosity value is obtained based on the smelting temperature, the pre-exponential factor of the slag, and the corresponding viscous activation energy. The pre-exponential factor and the viscous activation energy are calculated based on the mass of the target raw material components. Based on the volume fraction of Fe3O4 and the baseline viscosity value, the predicted viscosity value of the slag is determined, wherein the calculation expression for the predicted viscosity value is: ； In the formula, This represents the volume fraction of Fe3O4. The reference viscosity value is used as the reference viscosity value; the expression for calculating the reference viscosity value is: ； In the formula, A is the pre-exponential factor; B is the viscosity activation energy (J / mol); and T is the melting temperature. in: ； ； In the formula, m is the viscosity parameter. For the viscosity activation energies of different basic oxides, X1 represents the mole fraction of oxide i in the melt; i = 1, 2, 3, where X1 is the acid oxide, X2 is the basic oxide, and X3 is the molar mass of the amphoteric oxide in the melt. The expression for calculating the viscosity parameter m is: ； in, For each type of oxide i, there are coefficients. Let i be the mole fraction of oxide i in the melt; The The calculation expression is: ； in: ； ； In the formula, Here are the parameters for a ternary system, where M is a basic oxide. This represents the mole fraction of the acidic oxide in the melt. X1 represents the mole fraction of the basic oxide in the melt; X2 represents the mole fraction of the amphoteric oxide in the melt. The formula for calculating the volume fraction of Fe3O4 is as follows: ； in: ； In the formula, This represents the volume fraction of Fe3O4. Mass of Fe in slag; The oxidation rate of Fe; k1 represents the amount of oxygen-enriched air input during smelting; k1 and k2 are both oxidation rate coefficients.

2. A method for controlling the viscosity of smelting slag in copper oxide-sulfide concentrate, characterized in that, The method for controlling the viscosity of smelting slag in copper oxide-sulfide concentrate includes the following steps: Obtain the current predicted viscosity value based on the viscosity prediction method for smelting slag of copper oxide-sulfide concentrate as described in claim 1; When the current predicted viscosity value is greater than the preset viscosity threshold, the flux content and / or the amount of oxygen-enriched air input are adjusted so that the current predicted viscosity value obtained after adjustment is updated to be less than or equal to the preset viscosity threshold.

3. The method for controlling the viscosity of smelting slag-based copper oxide-sulfide concentrate as described in claim 2, characterized in that, The adjustment of flux content includes: Increase the CaO content in the flux to raise the basicity of the slag to 0.7-1.

2.

4. The method for controlling the viscosity of smelting slag-based copper oxide-sulfide concentrate as described in claim 2 or 3, characterized in that, The adjustment of the input oxygen-enriched air volume includes: Adjust the oxygen-enriched air volume to the oxidation rate of Fe. Less than or equal to the preset oxidation rate threshold.

5. A method for oxygen-enriched top-blown matte smelting based on the viscosity of smelting slag, characterized in that, The method includes the following steps: Copper oxide concentrate is added at 30-60% of the mass of copper sulfide concentrate to obtain copper oxide-sulfide concentrate, wherein the Cu content in the copper oxide-sulfide concentrate is 20-30%; The copper oxide-sulfide concentrate is added to an Isa furnace and smelted under oxygen-enriched top blowing at a temperature of 1100~1300℃ to obtain matte and slag with a grade of 56~65%. During the oxygen-enriched top blowing smelting process, the copper oxide-sulfide concentrate is regulated using the method for regulating the viscosity of the smelting slag as described in any one of claims 2 to 4, so that the current predicted viscosity value of the slag is less than or equal to a preset viscosity threshold.

6. A computer system, characterized in that, The computer system includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the method for predicting the viscosity of smelting slag of copper oxide-sulfide concentrate as described in claim 1, or the method for controlling copper oxide-sulfide concentrate based on the viscosity of smelting slag as described in any one of claims 2 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method for predicting the viscosity of smelting slag of copper oxide-sulfide concentrate as described in claim 1, or the method for controlling copper oxide-sulfide concentrate based on the viscosity of smelting slag as described in any one of claims 2 to 4.

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