Zinc Sulfate

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T. Ikeda - One of the best experts on this subject based on the ideXlab platform.

  • minohlite a new copper Zinc Sulfate mineral from minoh osaka japan
    Mineralogical Magazine, 2013
    Co-Authors: Masayuki Ohnishi, Keiji Shinoda, Daisuke Nishiohamane, Koichi Momma, Norimasa Shimobayashi, T. Ikeda
    Abstract:

    Minohlite, a new copper-Zinc Sulfate mineral related to schulenbergite, was found in the oxidized zone of the Hirao mine at Minoh (Minoo) City, Osaka Prefecture, Japan. The mineral occurs in cracks in altered shale as rosette aggregates up to 100 μm in diameter, composed of hexagonal platy crystals up to 50 μm in diameter and 10 μm in thickness. The associated minerals are chamosite, muscovite, smithsonite, serpierite, ramsbeckite, ‘limonite’ and chalcopyrite. Minohlite has hexagonal (or trigonal) symmetry with unit-cell parameters of a = 8.2535(11), c = 8.1352(17) A, V = 479.93(16) A 3 and Z = 1, and possible space groups P 6, P 6I, P 6/ m , P 622, P 6 mm , P 6I 2 m and P 6/ mmm (or P 3, P 3I, P 321, P 3 m 1, P 3I m 1, P 312, P 31 m and P 3I1 m ). The six strongest reflections in the powder X-ray diffraction pattern [ d in A ( I ) hkl ] are 8.138 (20) 001; 4.128 (24) 110; 2.702 (100) 120; 2.564 (76) 121; 1.560 (43) 140; and 1.532 (24) 141. Electron microprobe analyses gave the following values (wt.%): CuO 37.18, ZnO 21.08, FeO 0.49, SO 3 16.78, SiO 2 0.44, and H 2 O 24.03 (by difference). The empirical formula, calculated on the basis of Cu + Zn + Fe + S + Si = 9 atoms per formula unit, is (Cu 4.43 Zn 2.45 Fe 0.06 ) Σ6.94 [(SO 4 ) 1.99 (SiO 4 ) 0.07 ] Σ2.06 (OH) 9.64 ·7.81H 2 O, which leads a simplified formula of (Cu,Zn) 7 (SO 4 ) 2 (OH) 10 ·8H 2 O where Cu > Zn. The mineral is bluish-green and transparent with a pearly to vitreous lustre. The streak is pale green. Cleavage is perfect on {001}. The Mohs hardness number is less than 2. The calculated density is 3.28 g cm −3 . The mineral is named after Minoh City, where it was discovered.

  • minohlite a new copper Zinc Sulfate mineral from minoh osaka japan
    Mineralogical Magazine, 2013
    Co-Authors: Masayuki Ohnishi, Keiji Shinoda, Daisuke Nishiohamane, Koichi Momma, Norimasa Shimobayashi, T. Ikeda
    Abstract:

    Minohlite, a new copper-Zinc Sulfate mineral related to schulenbergite, was found in the oxidized zone of the Hirao mine at Minoh (Minoo) City, Osaka Prefecture, Japan. The mineral occurs in cracks in altered shale as rosette aggregates up to 100 μm in diameter, composed of hexagonal platy crystals up to 50 μm in diameter and 10 μm in thickness. The associated minerals are chamosite, muscovite, smithsonite, serpierite, ramsbeckite, ‘limonite’ and chalcopyrite. Minohlite has hexagonal (or trigonal) symmetry with unit-cell parameters of a = 8.2535(11), c = 8.1352(17) A, V = 479.93(16) A 3 and Z = 1, and possible space groups P 6, P 6I, P 6/ m , P 622, P 6 mm , P 6I 2 m and P 6/ mmm (or P 3, P 3I, P 321, P 3 m 1, P 3I m 1, P 312, P 31 m and P 3I1 m ). The six strongest reflections in the powder X-ray diffraction pattern [ d in A ( I ) hkl ] are 8.138 (20) 001; 4.128 (24) 110; 2.702 (100) 120; 2.564 (76) 121; 1.560 (43) 140; and 1.532 (24) 141. Electron microprobe analyses gave the following values (wt.%): CuO 37.18, ZnO 21.08, FeO 0.49, SO 3 16.78, SiO 2 0.44, and H 2 O 24.03 (by difference). The empirical formula, calculated on the basis of Cu + Zn + Fe + S + Si = 9 atoms per formula unit, is (Cu 4.43 Zn 2.45 Fe 0.06 ) Σ6.94 [(SO 4 ) 1.99 (SiO 4 ) 0.07 ] Σ2.06 (OH) 9.64 ·7.81H 2 O, which leads a simplified formula of (Cu,Zn) 7 (SO 4 ) 2 (OH) 10 ·8H 2 O where Cu > Zn. The mineral is bluish-green and transparent with a pearly to vitreous lustre. The streak is pale green. Cleavage is perfect on {001}. The Mohs hardness number is less than 2. The calculated density is 3.28 g cm −3 . The mineral is named after Minoh City, where it was discovered.

Masayuki Ohnishi - One of the best experts on this subject based on the ideXlab platform.

  • minohlite a new copper Zinc Sulfate mineral from minoh osaka japan
    Mineralogical Magazine, 2013
    Co-Authors: Masayuki Ohnishi, Keiji Shinoda, Daisuke Nishiohamane, Koichi Momma, Norimasa Shimobayashi, T. Ikeda
    Abstract:

    Minohlite, a new copper-Zinc Sulfate mineral related to schulenbergite, was found in the oxidized zone of the Hirao mine at Minoh (Minoo) City, Osaka Prefecture, Japan. The mineral occurs in cracks in altered shale as rosette aggregates up to 100 μm in diameter, composed of hexagonal platy crystals up to 50 μm in diameter and 10 μm in thickness. The associated minerals are chamosite, muscovite, smithsonite, serpierite, ramsbeckite, ‘limonite’ and chalcopyrite. Minohlite has hexagonal (or trigonal) symmetry with unit-cell parameters of a = 8.2535(11), c = 8.1352(17) A, V = 479.93(16) A 3 and Z = 1, and possible space groups P 6, P 6I, P 6/ m , P 622, P 6 mm , P 6I 2 m and P 6/ mmm (or P 3, P 3I, P 321, P 3 m 1, P 3I m 1, P 312, P 31 m and P 3I1 m ). The six strongest reflections in the powder X-ray diffraction pattern [ d in A ( I ) hkl ] are 8.138 (20) 001; 4.128 (24) 110; 2.702 (100) 120; 2.564 (76) 121; 1.560 (43) 140; and 1.532 (24) 141. Electron microprobe analyses gave the following values (wt.%): CuO 37.18, ZnO 21.08, FeO 0.49, SO 3 16.78, SiO 2 0.44, and H 2 O 24.03 (by difference). The empirical formula, calculated on the basis of Cu + Zn + Fe + S + Si = 9 atoms per formula unit, is (Cu 4.43 Zn 2.45 Fe 0.06 ) Σ6.94 [(SO 4 ) 1.99 (SiO 4 ) 0.07 ] Σ2.06 (OH) 9.64 ·7.81H 2 O, which leads a simplified formula of (Cu,Zn) 7 (SO 4 ) 2 (OH) 10 ·8H 2 O where Cu > Zn. The mineral is bluish-green and transparent with a pearly to vitreous lustre. The streak is pale green. Cleavage is perfect on {001}. The Mohs hardness number is less than 2. The calculated density is 3.28 g cm −3 . The mineral is named after Minoh City, where it was discovered.

  • minohlite a new copper Zinc Sulfate mineral from minoh osaka japan
    Mineralogical Magazine, 2013
    Co-Authors: Masayuki Ohnishi, Keiji Shinoda, Daisuke Nishiohamane, Koichi Momma, Norimasa Shimobayashi, T. Ikeda
    Abstract:

    Minohlite, a new copper-Zinc Sulfate mineral related to schulenbergite, was found in the oxidized zone of the Hirao mine at Minoh (Minoo) City, Osaka Prefecture, Japan. The mineral occurs in cracks in altered shale as rosette aggregates up to 100 μm in diameter, composed of hexagonal platy crystals up to 50 μm in diameter and 10 μm in thickness. The associated minerals are chamosite, muscovite, smithsonite, serpierite, ramsbeckite, ‘limonite’ and chalcopyrite. Minohlite has hexagonal (or trigonal) symmetry with unit-cell parameters of a = 8.2535(11), c = 8.1352(17) A, V = 479.93(16) A 3 and Z = 1, and possible space groups P 6, P 6I, P 6/ m , P 622, P 6 mm , P 6I 2 m and P 6/ mmm (or P 3, P 3I, P 321, P 3 m 1, P 3I m 1, P 312, P 31 m and P 3I1 m ). The six strongest reflections in the powder X-ray diffraction pattern [ d in A ( I ) hkl ] are 8.138 (20) 001; 4.128 (24) 110; 2.702 (100) 120; 2.564 (76) 121; 1.560 (43) 140; and 1.532 (24) 141. Electron microprobe analyses gave the following values (wt.%): CuO 37.18, ZnO 21.08, FeO 0.49, SO 3 16.78, SiO 2 0.44, and H 2 O 24.03 (by difference). The empirical formula, calculated on the basis of Cu + Zn + Fe + S + Si = 9 atoms per formula unit, is (Cu 4.43 Zn 2.45 Fe 0.06 ) Σ6.94 [(SO 4 ) 1.99 (SiO 4 ) 0.07 ] Σ2.06 (OH) 9.64 ·7.81H 2 O, which leads a simplified formula of (Cu,Zn) 7 (SO 4 ) 2 (OH) 10 ·8H 2 O where Cu > Zn. The mineral is bluish-green and transparent with a pearly to vitreous lustre. The streak is pale green. Cleavage is perfect on {001}. The Mohs hardness number is less than 2. The calculated density is 3.28 g cm −3 . The mineral is named after Minoh City, where it was discovered.

Chunhua Yang - One of the best experts on this subject based on the ideXlab platform.

  • a spectrophotometric method for simultaneous determination of trace ions of copper cobalt and nickel in the Zinc Sulfate solution by ultraviolet visible spectrometry
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019
    Co-Authors: Chunhua Yang, Fengbo Zhou, Hongqiu Zhu
    Abstract:

    Abstract In the Zinc Sulfate solution, the concentration ratio of Zinc to metal ion impurities can be up to 105, which causes impurity ion signals to be severely masked by the Zinc signal. In particular, nickel exhibits a strong nonlinearity. Conventional spectroscopic methods are commonly used to detect multi-component analytes with similar concentrations and require the detection component to be linear to satisfy Beer-Lambert law. In order to solve high concentration ratio and nonlinear problems, a spectrophotometric method combining the extended Kalman filter and derivative methods is proposed to simultaneously determine copper, cobalt and nickel in the Zinc Sulfate solution by ultraviolet-visible spectroscopy. The derivative method developed by using continuous wavelet transform with a Haar wavelet function was applied to detect copper and cobalt in regions with wavelengths greater than 500 nm, in which the absorbance of Zinc and nickel changed to a fixed value, where linear regression graphs for copper and cobalt were established at zero-crossing wavelengths. Extended Kalman filter spectrophotometry is a filtering algorithm for nonlinear systems, so it was proposed to iteratively detect nickel concentration. The detection range was found to be 0.5–5 mg/L for copper, 0.3–3 mg/L for cobalt, and 0.6–6 mg/L. The predicted root mean square error was 0.097 for copper, 0.049 for cobalt, and 0.206 for nickel. The average relative deviations of copper, cobalt, and nickel in 10 sets of mixed solutions were 3.19%, 2.23%, and 4.56%, respectively. The spectrophotometric method studied is suitable for real-time detection and control of trace amounts of copper, cobalt, and nickel in purification process of Zinc hydrometallurgy, and can be applied to more fields.

  • kinetic modeling and parameter estimation for competing reactions in copper removal process from Zinc Sulfate solution
    Industrial & Engineering Chemistry Research, 2013
    Co-Authors: Bin Zhang, Chunhua Yang, Hongqiu Zhu, Weihua Gui
    Abstract:

    In Zinc hydrometallurgy, an advanced copper removal process purifies Zinc Sulfate solution through a series of chemical reactions with recycled underflow by using Zinc powder in Zinc hydrometallurg...

  • kinetic modeling and parameter estimation for competing reactions in copper removal process from Zinc Sulfate solution
    Industrial & Engineering Chemistry Research, 2013
    Co-Authors: Bin Zhang, Chunhua Yang, Yonggang Li
    Abstract:

    In Zinc hydrometallurgy, an advanced copper removal process purifies Zinc Sulfate solution through a series of chemical reactions with recycled underflow by using Zinc powder in Zinc hydrometallurgy. This paper focuses on the kinetic modeling of the competitive-consecutive reaction system in the copper removal process, and proposes an adaptive parameter optimal selection strategy for different industrial conditions. In the system model, copper cementation, one of the removal reactions, is described by a surface controlled pseudo-first-order rate equation; cuprous oxide precipitation, the other removal reaction, is described by a shrinking core model of a noncatalytic fluid–solid reaction. Because there are several kinetic parameters in the system model, parameter estimation plays an essential role. Because of the complexity and variation in the practical removal process, the kinetic parameters are usually sensitive to alterations in the process conditions. This work solves the parameter estimation problem...

Bin Zhang - One of the best experts on this subject based on the ideXlab platform.

Hongqiu Zhu - One of the best experts on this subject based on the ideXlab platform.

  • a spectrophotometric method for simultaneous determination of trace ions of copper cobalt and nickel in the Zinc Sulfate solution by ultraviolet visible spectrometry
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019
    Co-Authors: Chunhua Yang, Fengbo Zhou, Hongqiu Zhu
    Abstract:

    Abstract In the Zinc Sulfate solution, the concentration ratio of Zinc to metal ion impurities can be up to 105, which causes impurity ion signals to be severely masked by the Zinc signal. In particular, nickel exhibits a strong nonlinearity. Conventional spectroscopic methods are commonly used to detect multi-component analytes with similar concentrations and require the detection component to be linear to satisfy Beer-Lambert law. In order to solve high concentration ratio and nonlinear problems, a spectrophotometric method combining the extended Kalman filter and derivative methods is proposed to simultaneously determine copper, cobalt and nickel in the Zinc Sulfate solution by ultraviolet-visible spectroscopy. The derivative method developed by using continuous wavelet transform with a Haar wavelet function was applied to detect copper and cobalt in regions with wavelengths greater than 500 nm, in which the absorbance of Zinc and nickel changed to a fixed value, where linear regression graphs for copper and cobalt were established at zero-crossing wavelengths. Extended Kalman filter spectrophotometry is a filtering algorithm for nonlinear systems, so it was proposed to iteratively detect nickel concentration. The detection range was found to be 0.5–5 mg/L for copper, 0.3–3 mg/L for cobalt, and 0.6–6 mg/L. The predicted root mean square error was 0.097 for copper, 0.049 for cobalt, and 0.206 for nickel. The average relative deviations of copper, cobalt, and nickel in 10 sets of mixed solutions were 3.19%, 2.23%, and 4.56%, respectively. The spectrophotometric method studied is suitable for real-time detection and control of trace amounts of copper, cobalt, and nickel in purification process of Zinc hydrometallurgy, and can be applied to more fields.

  • kinetic modeling and parameter estimation for competing reactions in copper removal process from Zinc Sulfate solution
    Industrial & Engineering Chemistry Research, 2013
    Co-Authors: Bin Zhang, Chunhua Yang, Hongqiu Zhu, Weihua Gui
    Abstract:

    In Zinc hydrometallurgy, an advanced copper removal process purifies Zinc Sulfate solution through a series of chemical reactions with recycled underflow by using Zinc powder in Zinc hydrometallurg...

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