The Experts below are selected from a list of 591 Experts worldwide ranked by ideXlab platform

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

  • characterization and valorization of kanbara reactor desulfurization waste slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2016
    Co-Authors: Zhibo Tong, Zhengliang Xue, Wei Wang, Xun Cai, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are <100 μm. The major crystalline phases present in NM waste slag are C, Ca (OH)2, CaSO4, CaF2, CaCO3, CaS and Ca2SiO4. A mass loss of ~20 wt% from room temperature to 1573 K is possibly due to the vaporization of moisture, water of crystallization and fluoride, decomposition of carbonates and CaSO4. The desulfurization ratio in pig iron increases with reaction time, which indicates that the NM waste slag still has desulfurization ability. Moreover, the desulfurization ratio increases with temperature and ratio of slag volume. It is also found that the apparent desulfurization rate constants are in the range between 0.007 and 0.016 min−1.

  • Characterization and Valorization of Kanbara Reactor Desulfurization Waste Slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2015
    Co-Authors: Zhibo Tong, Cai Xun, Zhengliang Xue, Wei Wang, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are

Zhibo Tong - One of the best experts on this subject based on the ideXlab platform.

  • characterization and valorization of kanbara reactor desulfurization waste slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2016
    Co-Authors: Zhibo Tong, Zhengliang Xue, Wei Wang, Xun Cai, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are <100 μm. The major crystalline phases present in NM waste slag are C, Ca (OH)2, CaSO4, CaF2, CaCO3, CaS and Ca2SiO4. A mass loss of ~20 wt% from room temperature to 1573 K is possibly due to the vaporization of moisture, water of crystallization and fluoride, decomposition of carbonates and CaSO4. The desulfurization ratio in pig iron increases with reaction time, which indicates that the NM waste slag still has desulfurization ability. Moreover, the desulfurization ratio increases with temperature and ratio of slag volume. It is also found that the apparent desulfurization rate constants are in the range between 0.007 and 0.016 min−1.

  • Characterization and Valorization of Kanbara Reactor Desulfurization Waste Slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2015
    Co-Authors: Zhibo Tong, Cai Xun, Zhengliang Xue, Wei Wang, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are

Wei Wang - One of the best experts on this subject based on the ideXlab platform.

  • characterization and valorization of kanbara reactor desulfurization waste slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2016
    Co-Authors: Zhibo Tong, Zhengliang Xue, Wei Wang, Xun Cai, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are <100 μm. The major crystalline phases present in NM waste slag are C, Ca (OH)2, CaSO4, CaF2, CaCO3, CaS and Ca2SiO4. A mass loss of ~20 wt% from room temperature to 1573 K is possibly due to the vaporization of moisture, water of crystallization and fluoride, decomposition of carbonates and CaSO4. The desulfurization ratio in pig iron increases with reaction time, which indicates that the NM waste slag still has desulfurization ability. Moreover, the desulfurization ratio increases with temperature and ratio of slag volume. It is also found that the apparent desulfurization rate constants are in the range between 0.007 and 0.016 min−1.

  • Characterization and Valorization of Kanbara Reactor Desulfurization Waste Slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2015
    Co-Authors: Zhibo Tong, Cai Xun, Zhengliang Xue, Wei Wang, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are

Zhengliang Xue - One of the best experts on this subject based on the ideXlab platform.

  • characterization and valorization of kanbara reactor desulfurization waste slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2016
    Co-Authors: Zhibo Tong, Zhengliang Xue, Wei Wang, Xun Cai, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are <100 μm. The major crystalline phases present in NM waste slag are C, Ca (OH)2, CaSO4, CaF2, CaCO3, CaS and Ca2SiO4. A mass loss of ~20 wt% from room temperature to 1573 K is possibly due to the vaporization of moisture, water of crystallization and fluoride, decomposition of carbonates and CaSO4. The desulfurization ratio in pig iron increases with reaction time, which indicates that the NM waste slag still has desulfurization ability. Moreover, the desulfurization ratio increases with temperature and ratio of slag volume. It is also found that the apparent desulfurization rate constants are in the range between 0.007 and 0.016 min−1.

  • Characterization and Valorization of Kanbara Reactor Desulfurization Waste Slag of Hot Metal Pretreatment
    Waste and Biomass Valorization, 2015
    Co-Authors: Zhibo Tong, Cai Xun, Zhengliang Xue, Wei Wang, Xiang Zhang
    Abstract:

    The desulfurization waste slag from Hot Metal Pretreatment process is a typical solid waste generated in the integrated steel company. About 7- to 9-kg waste slag is produced per ton Hot Metal treated in the Kanbara Reactor (KR) desulfurization process, and the waste slag contains approximately 40–60 % CaO and large amounts of iron. Therefore, effectively valorization of these waste slags is significant for resources reutilization and environmental protection. A novel valorization process of KR desulfurization waste slag into iron-containing substances and desulfurization agent for Hot Metal Pretreatment was investigated. Magnetic separation method was conducted to recovery iron-containing substances from the KR waste slag. Various techniques such as XRD, TG-DSC, SEM–EDS were used to characterize the non-magnetic (NM) waste slag. The pyroMetallurgical recycling experiments of NM waste slag were performed in a tube furnace after considering various parameters, such as reaction temperature, ratio of slag volume and slag composition. The results show that ~56 wt% of the KR slag can potentially be recycled as an iron-bearing raw material for steelmaking process. The major components of NM KR waste slag are calcium, silicon and iron oxides, and ~70 vol% of NM waste slag particles are

Maofa Jiang - One of the best experts on this subject based on the ideXlab platform.

  • A new method of red mud recycling in the process of Hot Metal Pretreatment
    Metallurgical Research & Technology, 2020
    Co-Authors: Bo Zhang, Chengjun Liu, Maofa Jiang
    Abstract:

    To realize a large-scale consumption of red mud in the steelmaking industry, a new recycling method was investigated through the pre-reduction roasting experiment and the slag-Metal interaction experiment simulating the Hot Metal Pretreatment process in the steelmaking industry. In virtue of the sensible heating of the Hot Metal and the reducibility of [C] and [Si], the iron could be separated and recovered from the pre-reduced red mud pellets into the Hot Metal directly with a recovery rate exceeding 75%. With the composition adjustment of the residual oxides in the pre-reduced red mud (PRRD) using CaO and Al2 O3 or aluminium dross (AD), a slag having a low melting point (below 1300 °C) and a high sulfide capacity (lgC S  = −2.3) was formed, and more than 94% of [S] in the Hot Metal could be removed into this slag through the slag-Metal interaction. The desulfurization efficiency of the flux (PRRD-CaO–Al2 O3 ; PRRD-CaO–AD) is approximate to the traditional desulfurizing flux (CaO–CaF2 ). The advantages of this method are summarized as the low energy cost and the slag valorization.