|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Indirect mineral carbonation of titanium-bearing blast furnace slag coupled with recovery of TiO_2 and Al_2O_3显示文摘Large quantities of CO_2 and blast furnace slag are discharged in the iron and steel industry. Mineral carbonation of blast furnace slag can offer substantial CO_2 emission reduction and comprehensive utilization of the solid waste.This paper describes a novel route for indirect mineral carbonation of titanium-bearing blast furnace(TBBF) slag,in which the TBBF slag is roasted with recyclable(NH_4)_2SO_4(AS) at low temperatures and converted into the sulphates of various valuable metals, including calcium, magnesium, aluminium and titanium. High value added Ti-and Al-rich products can be obtained through stepwise precipitation of the leaching solution from the roasted slag. The NH_3 produced during the roasting is used to capture CO_2 from flue gases. The NH_4HCO_3 and(NH_4)_2CO_3 thus obtained are used to carbonate the CaSO_4-containing leaching residue and MgSO_4-rich leaching solution, respectively. In this study, the process parameters and efficiency for the roasting, carbonation and Ti and Al recovery were investigated in detail. The results showed that the sulfation ratios of calcium,magnesium, titanium and aluminium reached 92.6%, 87% and 84.4%, respectively, after roasting at an AS-to-TBBF slag mass ratio of 2:1 and 350 °C for 2 h. The leaching solution was subjected to hydrolysis at 102 °C for 4 h with a Ti hydrolysis ratio of 95.7% and the purity of TiO_2 in the calcined hydrolysate reached 98 wt%.99.7% of aluminium in the Ti-depleted leaching solution was precipitated by using NH_3. The carbonation products of Ca and Mg were CaCO_3 and(NH_4)_2 Mg(CO_3)_2·4H_2O, respectively. The latter can be decomposed into MgCO_3 at 100–200 °C with simultaneous recovery of the NH_3 for reuse. In this process, approximately 82.1% of Ca and 84.2%of Mg in the TBBF slag were transformed into stable carbonates and the total CO_2 sequestration capacity per ton of TBBF slag reached up to 239.7 kg. The TiO_2 obtained can be used directly as an end product, while the Al-rich precipitate and the two carbonation products can act, respectively, as raw materials for electrolytic aluminium,cement and light magnesium carbonate production for the replacement of natural resources. | Lin Wang Weizao Liu Jingpeng Hu Qiang Liu Hairong Yue Bin Liang Guoquan Zhang Dongmei Luo Heping Xie Chun Li | 2018 | Chinese Journal of Chemical Engineering2018，26，3： | 14 |
| 2 | Indirect mineral carbonation of blast furnace slag with(NH4)2SO4 as a recyclable extractant显示文摘Large quantities of CO_2 and blast furnace slag are discharged in the iron and steel industry. Mineral carbonation of blast furnace slag can offer substantial CO_2 emission reduction and comprehensive utilisation of the solid waste. In this study, a recyclable extractant,(NH_4)_2SO_4, was used to extract calcium and magnesium from blast furnace slag(main phases of gehlenite and akermanite) by using low-temperature roasting to fix CO_2 through aqueous carbonation. The process parameters and efficiency of the roasting extraction, mineralisation, and Al recovery were investigated in detail. The results showed that the extractions of Ca, Mg, and Al can reach almost 100% at an(NH4)_2SO_4-to-slag mass ratio of 3:1 and at 370°C in 1 h. Adjusting the p H value of the leaching solution of the roasted slag to 5.5 with the NH_3 released during the roasting resulted in 99% Al precipitation, while co-precipitation of Mg was lower than 2%. The Mg-rich leachate after the depletion of Al and the leaching residue(main phases of CaSO_4 and SiO_2) were carbonated using(NH_4)_2CO_3 and NH_4HCO_3 solutions, respectively, under mild conditions. Approximately 99% of Ca and 89% of Mg in the blast furnace slag were converted into CaCO_3 and(NH_4)_2 Mg(CO_3)_2·4 H_2O,respectively. The latter can be selectively decomposed to magnesium carbonate at 100-200 °C to recover the NH_3 for reuse. In the present route, the total CO_2 sequestration capacity per tonne of blast furnace slag reached up to 316 kg, and 313 kg of Al-rich precipitate, 1000 kg of carbonated product containing CaCO_3 and SiO_2, and 304 kg of carbonated product containing calcium carbonate and magnesium carbonate were recovered simultaneously. These products can be used, respectively, as raw materials for the production of electrolytic aluminium, cement, and light magnesium carbonate to replace natural resources. | Jinpeng Hu Weizao Liu Lin Wang Qiang Liu Fang Chen Hairong Yue Bin Liang Li Lü Ye Wang Guoquan Zhang Chun Li | 2017 | Journal of Energy Chemistry2017，26，5： | 9 |
| 3 | Climate Sensitivity and Feedbacks of BCC-CSM to Idealized CO2 Forcing from CMIP5 to CMIP6显示文摘Climate sensitivity represents the response of climate system to doubled CO2 concentration relative to the preindustrial level, which is one of the sources of uncertainty in climate projections. It is unclear how the climate sensitivity and feedbacks will change as a model system is upgraded from the Coupled Model Intercomparison Project Phase 5(CMIP5) to CMIP6. In this paper, we address this issue by comparing two versions of the Beijing Climate Center Climate System Model(BCC-CSM) participating in CMIP6 and CMIP5, i.e., BCC-CSM2-MR and BCC-CSM1.1 m,which have the same horizontal resolution but different physical parameterizations. The results show that the equilibrium climate sensitivity(ECS) of BCC-CSM slightly increases from CMIP5(2.94 K) to CMIP6(3.04 K). The small changes in the ECS result from compensation between decreased effective radiative forcing(ERF) and the increased net feedback. In contrast, the transient climate response(TCR) evidently decreases from 2.19 to 1.40 K, nearly the lower bound of the CMIP6 multimodel spread. The low TCR in BCC-CSM2-MR is mainly caused by the small ERF overly even though the ocean heat uptake(OHU) efficiency is substantially improved from that in BCC-CSM1.1 m.Cloud shortwave feedback(λSWCL) is found to be the major cause of the increased net feedback in BCC-CSM2-MR,mainly over the Southern Ocean. The strong positive λSWCL in BCC-CSM2-MR is coincidently related to the weakened sea ice-albedo feedback in the same region. This result is caused by reduced sea ice coverage simulated during the preindustrial cold season, which leads to reduced melting per 1-K global warming. As a result, in BCCCSM2-MR, reduced surface heat flux and strengthened static stability of the planetary boundary layer cause a decrease in low-level clouds and an increase in incident shortwave radiation. This study reveals the important compensation between λSWCL and sea ice-albedo feedback in the Southern Ocean. | Xueli SHI Xiaolong CHEN Yunwei DAI Guoquan HU | 2020 | Journal of Meteorological Research2020，34，4： | 8 |
| 4 | REE geochemical characteristics of the No. 302 uranium deposit in northern Guangdong, South China显示文摘The No. 302 uranium deposit, located in Guangdong Province, is a typical granite-type uranium ore deposit. REE geochemical characteristics of the wall rocks, pitchblende, altered rocks, calcite and fluorite from this deposit have been systematically studied in this paper. The result showed that the alkali-metasomatic granites and other altered rocks have the same REE distribution patterns as Indosinian granites. It is indicated that the hydrothermal ore-forming solution had altered the Indosinian granites, and ore-forming materials may directly originate from the Indosinian granites. Calcite and fluorite of different stages are the products derived from the same source but different stages. The evolution and degassing of the mineralizing solution might induce LREE enrichment to varying degree. Mantle fluid and a large volume of mineralizer may be the crucial factors controlling uranium mineralization, and the hydrothermal solution with mineralizer played an important role in U transport and concentration. Meanwhile, the degassing of CO2 might promote U and REE precipitation. | ZHANG Guoquan HU Ruizhong BI Xianwu FENG Haisheng SHANG Pengqiang TIAN Jianji | 2007 | Chinese Journal Of Geochemistry2007，26，4： | 8 |
| 5 | Decomposition behavior of CaSO_4 during potassium extraction from a potash feldspar-CaSO_4 binary system by calcination显示文摘The extraction of potassium from a tablet mixture of K-feldspar ore and CaSO_4by roasting was studied with a focus on the effects of the decomposition behavior of CaSO_4on the potassium extraction process.The roasted slags were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),energy-dispersive X-ray spectroscopy,and thermogravimetric(TG)analysis.The XRD analysis revealed that hydrosoluble mischcrystal K_2Ca_2(SO_4)_3was obtained by ion exchange of Ca^(2+)in CaSO_4and K^+in KAlSi_3O_8.Meanwhile,the intermediate product,SiO_2,separated from KAl Si_3O_8and reacted with CaSO_4to decompose CaSO_4.The SEM results showed that some blowholes emerged on the surface of the CaSO_4particles when they reacted with SiO_2at 1200°C,which indicates that SO_2and O_2gases were released from CaSO_4.The TG curves displayed that pure CaSO_4could not be decomposed below 1200°C,while the mixture of K-feldspar ore and CaSO_4began to lose weight at 1000°C.The extraction rate of potassium and decomposition rate of CaSO_4were 62%and 44%,respectively,at a mass ratio of CaSO_4to K-feldspar ore of 3:1,temperature of 1200°C,tablet-forming pressure of6 MPa,and roasting time of 2 h.The decomposition of CaSO_4reduced the potassium extraction rate;therefore,the required amount of CaSO_4was more than the theoretical amount.However,excess CaSO_4was also undesirable for the potassium extraction reaction because a massive amount of SO_2and O_2gas were derived from the decomposition of CaSO_4,which provided poor contact between the reactants.The SO_2released from CaSO_4decomposition can be effectively recycled. | Li Lü Chun Li Guoquan Zhang Xiaowei Hu Bin Liang | 2018 | Chinese Journal of Chemical Engineering2018，26，4： | 7 |
| 6 | Microstructure Stability of V and Ta Microalloyed 12%Cr Reduced Activation Ferrite/Martensite Steel during Long-term Aging at 650℃显示文摘In view of developing novel alloys for applications in supercritical water-cooled reactor fuel cladding and in-core components, a 12%Cr reduced activation ferrite/martensite(RAFM) steel with good corrosion resistance and irradiation performance was developed. V and Ta were added to form fine MX type carbonitrides and enhance the high temperature creep rupture strength. Microstructure stability of the steel during long-term aging at 650 C was studied experimentally combined with the simulation of ThermoCalc and DICTRA software. The results show that the precipitates in the steel during long-term aging contain M23C6, MX and Laves phase. M23C6 carbides play a major role in the stabilization of the tempered martensite lath structure by exerting a large Zener pinning force as compared with MX and Laves phase.Adding V and Ta in the steel can not only promote MX precipitation, but also refine M23C6 carbides and thus improve the thermal stability of lath/subgrains, which is beneficial to the improvement of high temperature microstructure stability of the 12%Cr RAFM steel. | Xiang Xiao Guoquan Liu Benfu Hu Jinsan Wang Wenbin Ma | 2015 | Journal of Materials Science & Technology2015，31，3： | 5 |
| 7 | Changes in Antioxidant Enzyme Activities and Malondialdehyde(MDA) Content of Rice with Blast Resistance Induced by Ag-antibiotic 702显示文摘The paper was to explore the effect of rice blast resistance induced by Ag-antibiotic 702 on antioxidant enzyme activities and malondialdehyde( MDA)content. At three-leaf and one-heart stage of Luliangyou 996,15 μg/mL Ag-antibiotic 702 was sprayed,while Validamycin and distilled water were sprayed as positive control and negative control,respectively. The antioxidant enzyme( SOD,POD,PPO,CAT and PAL) activities and malondialdehyde( MDA) content in rice leaves were determined every 24 h within 168 h post spraying. Compared with CK,the MDA content and activities of the five antioxidant enzymes increased in Agantibiotic 702 treatment,Validamycin treatment and M. grisea inoculation treatment. The MDA content and SOD,CAT and POD activities in Ag-antibiotic 702 treatment were significantly higher than those in M. grisea inoculation treatment in early stage,and the APX and LOX activities increased more remarkably and rapidly. The induction effect of Ag-antibiotic 702 could reach or exceed that of Validamycin treatment. Ag-antibiotic 702 enhanced the resistance to rice blast because MDA content and antioxidant enzymes activities were improved in rice leaves. Therefore,the increase of rice blast resistance induced by Ag-antibiotic 702 in rice was positively correlated with the increase of MDA content and antioxidant enzymes activities in rice leaves. | Hu Neng Tu Xiaorong Li Kuntai Liu Yongkang Guo Amin Tu Guoquan Huang Lin | 2017 | Plant Diseases and Pests2017，8，2： | 5 |
| 8 | Hot deformation behavior of FGH96 superalloys显示文摘The hot deformation behavior of FGH96 superalloys at 1070-1170°C and 5×10?4-2×10?1 s?1 were investigated by means of the isothermal compression tests at a Gleeble-1500 thermal mechanical simulator. The results show that dynamic recovery acts as the main softening mechanism below 2×10?3 s?1, whereas dynamic recrystallization acts as the main softening mechanism above 2×10?3 s?1 during deformation; the temperature increase caused by the deformation and the corresponding softening stress is negligible; the thermal-mechanical constitutive model to describe the hot deformation behavior is given, and the value of the apparent deformation activation energy (Qdef ) is determined to be 354.93 kJ/mol. | Jiantao Liu Guoquan Liu Benfu Hu Yuepeng Song Ziran Qin Yiwen Zhang | 2006 | Journal of University of Science and Technology Beijing2006，13，4： | 4 |
| 9 | Cooling γ′ precipitation behavior and strengthening in powder metallurgy su-peralloy FGH4096显示文摘Two cooling schemes (continuous cooling and interrupted cooling tests) were applied to investigate the cooling γ′ precipitation behavior in powder metallurgy superalloy FGH4096. The effect of cooling rate on cooling γ′ precipitation and the development of γ′ precipitates during cooling process were involved in this study. The ultimate tensile strength (UTS) of the specimens in various cooling circumstances was tested. The experiential equations were obtained between the average sizes of secondary and tertiary γ′ precipitates, the strength, and cooling rate. The results show that they are inversely correlated with the cooling rate as well as the grain boundary changes from serrated to straight, the shape of secondary γ′ precipitates changes from irregular cuboidal to spherical, while the formed tertiary γ′ precipitates are always spherical. The interrupted cooling tests show that the average size of secondary γ′ precipitates increases as a linear function of interrupt temperature for a fixed cooling rate of 24°C/min. The strength first decreases and then increases against interrupt temperature, which is fundamentally caused by the multistage nucleation of γ′ precipitates during cooling process. | TIAN Gaofeng JIA Chengchang WEN Yin LIU Guoquan HU Benfu | 2008 | Rare Metals2008，27，4： | 3 |
| 10 | Process simulation and energy integration in the mineral carbonation of blast furnace slag显示文摘Large quantities of blast furnace(BF) slag and CO_2 are discharged annually from iron and steel industries, along with a large amount of waste heat.The mineral carbonation of BF slag can not only reduce emissions of solid waste but also realize the in-situ fixation of CO_2 with low energy consumption if integrated with the waste heat utilization.In this study, based on our previous works, Aspen Plus was employed to simulate and optimize the carbonation process and integrate the process energy.The effects of gehlenite extraction, MgSO_4 carbonation,and aluminum ammonium sulfate crystallization were studied systematically.The simulation results demonstrate that 2.57 kg of BF slag can sequester 1 kg of CO_2, requiring 5.34 MJ of energy(3.3 MJ heat and 2.04 MJ electricity), and this energy includes the capture of CO_2 from industrial flue gases.Approximately 60 kg net CO_2 emission reduction could be achieved for the disposal of one ton of BF slag.In addition, the by-product,aluminum ammonium sulfate, is a high value-added product.Preliminary economic analysis indicates that the profit for the whole process is 1127 CNY per ton of BF slag processed. | Jianqiu Gao Chun Li Weizao Liu Jinpeng Hu Lin Wang Qiang Liu Bin Liang Hairong Yue Guoquan Zhang Dongmei Luo Siyang Tang | 2019 | Chinese Journal of Chemical Engineering2019，27，1： | 2 |
| 11 | Stability of γ′ multimodal microstructure in a Ni-based powder metallurgy superalloy显示文摘Multimodal size distribution of γ′ phase was obtained in a slow-cooling experiment following supersolvus solution treatment(1191°C). The morphology of the secondary γ′ particles exhibited splitting and protrusion instabilities. In the subsequent aging process(815°C), reverse coarsening was observed, i.e., the average precipitate size decreased with increasing aging time.Reverse coarsening slows the coarsening rate of the precipitates, increases the hardness of the alloy, and greatly improves the morphological stability of the γ′ phase. | ZHANG Ming LIU GuoQuan WANG Hao HU BenFu | 2018 | Science China(Technological Sciences)2018，61，12： | 2 |
| 12 | Changes in Protein Content and Chitinase and β-1,3- glucanase Activities of Rice with Blast Resistance Induced by Ag-antibiotic 702显示文摘[Objective] The paper was to explore the effect of rice blast resistance induced by Ag-antibiotics 702 on protein content and chitinase and β-1,3-glucanase activities in rice. [Method]At the fourth leaf stage of Luliangyou 996,15 μg/m L Ag-antibiotic 702 was sprayed,while Validamycin and distilled water were sprayed as positive control and negative control,respectively. All treatments were inoculated with spore fluid of Magnaporthe grisea at 48 h post spraying,and the rice inoculated with only distilled water was used as blank control. The enzymes activities( endochitinase,exochitinase and β-1,3-glucanase) and total protein content in rice leaves were determined every 24 h within 168 h post spraying. [Result] Compared with the blank control,the rice inoculated with spore fluid of M. grisea could significantly increase the total protein content and the activities of β-1,3-glucanase and chitinase. The induction effect of Ag-antibiotics 702 exceeded that of Validamycin treatment. And the changes in activities of β-1,3-glucanase and chitinase had obvious synchronicity. [Conclusion] Ag-antibiotic 702 can significantly improve the total protein content and the activities of β-1,3-glucanase and chitinase,thus enhancing the resistance to rice blast. | Hu Neng Tu Xiaorong Li Kuntai Ding Hao Li Huan Zhang Huawei Tu Guoquan Huang Lin | 2017 | Plant Diseases and Pests2017，8，4： | 2 |
| 13 | Semi-continuous anaerobic co-digestion of dairy manure with three crop residues for biogas production显示文摘 | Jiang Li Luoyu Wei Qiwu Duan Guoquan Hu Guozhi Zhang | 2014 | Bioresource Technology2014，，： | 1 |
| 14 | Quantum commutative algebras and their duals显示文摘 | Guoquan Hu Yonghua Xu | 1997 | Science in China Series A: Mathematics1997，，3： | 1 |
| 15 | Hot compressive deformation behavior of a new hot isostatically pressed Ni–Cr–Co based powder metallurgy superalloy显示文摘 | Kai Wu Guoquan Liu Benfu Hu Feng Li Yiwen Zhang Yu Tao Jiantao Liu | 2010 | Materials and Design2010，，： | 1 |
| 16 | Metabolic engineering using acetate as a promising building block for the production of bio‐based chemicals显示文摘The production of biofuels and biochemicals derived from microbial fermentation has received a lot of attention and interest in light of concerns about the depletion of fossil fuel resources and climatic degeneration.However,the economic viability of feedstocks for biological conversion remains a barrier,urging researchers to develop renewable and sustainable low-cost carbon sources for future bioindustries.Owing to the numerous advantages,acetate has been regarded as a promising feedstock targeting the production of acetyl-CoA-derived chemicals.This review aims to highlight the potential of acetate as a building block in industrial biotechnology for the production of bio-based chemicals with metabolic engineering.Different alternative approaches and routes com-prised of lignocellulosic biomass,waste streams,and C1 gas for acetate generation are briefly described and evaluated.Then,a thorough explanation of the metabolic pathway for biotechnological acetate conversion,cel-lular transport,and toxin tolerance is described.Particularly,current developments in metabolic engineering of the manufacture of biochemicals from acetate are summarized in detail,with various microbial cell factories and strategies proposed to improve acetate assimilation and enhance product formation.Challenges and future development for acetate generation and assimilation as well as chemicals production from acetate is eventually shown.This review provides an overview of the current status of acetate utilization and proves the great potential of acetate with metabolic engineering in industrial biotechnology. | Guiping Gong Bo Wu Linpei Liu Jianting Li Qili Zhu Mingxiong He Guoquan Hu | 2022 | Engineering Microbiology2022，2，4： | 1 |
| 17 | Polarization-modified Fano line shape spectrum with a single whispering gallery mode显示文摘Using the HE11Xand HE11Ymodes in a tapered fiber(TF)and the whispering gallery mode(WGM)in a microsphere resonator,Fano line-shape spectra were theoretically described and experimentally observed in this study.The line shapes of the spectra can be tuned to form a Lorentz notch,various Fano line shapes,and the Lorentz peak by controlling the polarizations at the input and output ports of the TF.The relative position or the size of the waveguide and WGM resonator do not need to be accurately controlled to produce these effects.The proposed configuration is suitable for mass production and will improve the performance of the devices in which it is applied. | PengFa Chang BoTao Cao LiGang Huang JiWei Li Yue Hu Feng Gao WenDing Zhang Fang Bo XuanYi Yu GuoQuan Zhang JingJun Xu | 2020 | Science China(Physics,Mechanics & Astronomy)2020，63，1： | 1 |
| 18 | Hydrothermal pretreatment of rice straw at relatively lower temperature to improve biogas production vict anaerobic digestion显示文摘Although the degradation mechanism of straw anaerobic digestion is still obscure,lower temperature thermop hysical pretreatment might be a feasible way to improve biogas fermentation efficiency and net energy production in whole slurry.In this study,the performances of rice straw(RS)degradation and biogas production were examined at different pretreatment temperatures from 90 ℃ to 130℃ to identify the optimal process.With increasing pretreatment temperature,the change in cellulose and hemicellulose degradation in all the tests was directly related to volatile fatty acids(VFAs)content,but did not correspond to the variation in cumulative methane production.Both 100℃ and 130℃presented similar ideal digestion performances with highest methane yields of 127.6 and 124.6 mL/g TS,respectively,which were 22.80%and 19.83%higher than that noted in the control.Although test at 100 ℃pretreatment,which achieved 12.8%higher net energy production from RS than that observed in the control,could be considered as the optimal choice,the surplus biogas could only meet 75.9%of energy requirement for pretreated water temperature shift.Nevertheless,mesophilic or thermophilic fermentation,lower pretreatment water input,and reuse of excess heat are recommended as feasible working conditions for improving net biogas production. | Tao Luo Hailong Huang Zili Mei Fei Shen Yihong Ge Guoquan Hu Xi Meng | 2019 | Chinese Chemical Letters2019，30，6： | 1 |
| 19 | Facile template-free sonochemical fabrication of hollow ZnO spherical structures显示文摘 | Chonghai Deng Hanmei Hu Guoquan Shao Chengliang Han | 2010 | Materials Letters2010，，64： | 1 |
| 20 | Platinum Group Metals New Material显示文摘Platinum group metals (PGM) include six elements, namely Pt, Pd, Rh, Ir, Os and Ru. PGM and their alloys are the important fundamental materials for modern industry and national defense construction, they have special physical and chemical properties, widely used in metallurgy, chemical, electric, electronic, information, energy, environmental protection, aviation, aerospace, navigation and other high technology industry. Platinum group metals and their alloys, which have good plasticity and processability, can be processed to electrical contact materials, resistance materials, solder, electronic paste, temperature-measurement materials, elastic materials, magnetic materials and high temperature structural materials. | XIE Ming WANG Saibei HU Jieqiong LIU Manmen CHEN Yongtai ZHANG Jiming YANG Youcai YANG Yunfeng ZHANG Guoquan ZHANG Jiankang | 2012 | 贵金属2012，33，A01： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员