The nation-wide iron ore exploration is primarily based on aeromagnetic survey,based upon which a series of ground follow-up and drilling examination were carried out,and then reconnaissance and detailed investigation...The nation-wide iron ore exploration is primarily based on aeromagnetic survey,based upon which a series of ground follow-up and drilling examination were carried out,and then reconnaissance and detailed investigation and exploration were fulfilled.However,for some large.展开更多
A computer program is developed to simulate a two-step smelting-reduction process. Laws of thermodynamics, kinetics, iron-oxide reduction, energy balance, materials balance and transfer of heat and mass between metal,...A computer program is developed to simulate a two-step smelting-reduction process. Laws of thermodynamics, kinetics, iron-oxide reduction, energy balance, materials balance and transfer of heat and mass between metal, slag and gas are taken into account for development of the model. Local equilibria between metal and slag according to the quadratic formalism of the regular solution model is considered. Dissolution of iron and its oxides in the molten slag and eat transfer from post combustion gases to the molten bath are numerically analyzed. The model is able to evaluate the effect of all important variables on productivity and effectiveness of the process. Special attention is paid to the operational conditions of the reduction furnace while working with the gases coming from a smelter with a high post-combustion ratio and a high reducing-power produced through reforming of the off-gases of the smelter with a natural gas stream in order to minimize the total energy consumption and to maximize the productivity.The application of the model to optimize the behavior of a two stage smelting-reduction system is investigated.展开更多
transport mechanical parts, mechanical arms assemble them and robots spray paint them. The result is a finished product. In the unmanned digital factory of Siasun Robot and Automation in Huzhou, east China＇s Zhejiang...transport mechanical parts, mechanical arms assemble them and robots spray paint them. The result is a finished product. In the unmanned digital factory of Siasun Robot and Automation in Huzhou, east China＇s Zhejiang Province all these production processes are executed by robots. ＂Robotic production is five to 10 times more efficient than manual operation.＂ said Ha Enjing, head of Siasun＇s Brand Promotion and Public Relations Department.展开更多
At 14：28 hours （Beijing time） of May 12, 2008, a magnitude 8 earthquake jolted nearly half of Asia.Barely eight hours had passed before a regiment of the Chinese People＇s Liberation Army （PLA） left its base for ...At 14：28 hours （Beijing time） of May 12, 2008, a magnitude 8 earthquake jolted nearly half of Asia.Barely eight hours had passed before a regiment of the Chinese People＇s Liberation Army （PLA） left its base for the hardest-hit Sichuan Province to save lives. The No. 18 Artillery Regiment of the PLA 14th Army Group Corps arrived in Chengdu, the provincial capital, the following day. alighting from the at 18：00 hours of Immediately after train, officers and soldiers of the regiment were ordered to head for Mianzhu County just a few dozen kilometers from Wenchuan County, the epicenter, where up to 80% of the buildings had collapsed.展开更多
THE Iron Man Triathlon challenges even the most veteran athlete. Competitors swim 3,000 meters, followed by a 40 kilometer bike race and ending with a i0 kilometer cross-country run.The Iron Man allows athletes to dis...THE Iron Man Triathlon challenges even the most veteran athlete. Competitors swim 3,000 meters, followed by a 40 kilometer bike race and ending with a i0 kilometer cross-country run.The Iron Man allows athletes to display their utmost abilities. As of January 1997, triathlete Wang Dan had accumulated the highest number of points of Asian iron man triathletes, according to the Asian Iron Man Triathlon Federation. Following her lead is Chinese triathlete Xing Lin. Liu Xiaodan, Chinese third ranking triathlete, comes in 5th among Asian competitors. All three girls are just 17 years old and all natives of Shenyang,展开更多
The phrase "iron girl" is symbolic of an era. Widely used in the 1960s and the early 1970s, it was a term that described women who, in the spirit of sexual equality, found in themselves a physical strength t...The phrase "iron girl" is symbolic of an era. Widely used in the 1960s and the early 1970s, it was a term that described women who, in the spirit of sexual equality, found in themselves a physical strength that surpassed their psychologi cal expectations. With their might and power, they proved to society that women could do everything that men could. The title of "iron girl" was their pride.The well-known writer Fan Xiaoqing, was one such iron girl. She says the "iron girls" were nothing less than a quest for perfection.展开更多
文摘The nation-wide iron ore exploration is primarily based on aeromagnetic survey,based upon which a series of ground follow-up and drilling examination were carried out,and then reconnaissance and detailed investigation and exploration were fulfilled.However,for some large.
文摘A computer program is developed to simulate a two-step smelting-reduction process. Laws of thermodynamics, kinetics, iron-oxide reduction, energy balance, materials balance and transfer of heat and mass between metal, slag and gas are taken into account for development of the model. Local equilibria between metal and slag according to the quadratic formalism of the regular solution model is considered. Dissolution of iron and its oxides in the molten slag and eat transfer from post combustion gases to the molten bath are numerically analyzed. The model is able to evaluate the effect of all important variables on productivity and effectiveness of the process. Special attention is paid to the operational conditions of the reduction furnace while working with the gases coming from a smelter with a high post-combustion ratio and a high reducing-power produced through reforming of the off-gases of the smelter with a natural gas stream in order to minimize the total energy consumption and to maximize the productivity.The application of the model to optimize the behavior of a two stage smelting-reduction system is investigated.
文摘transport mechanical parts, mechanical arms assemble them and robots spray paint them. The result is a finished product. In the unmanned digital factory of Siasun Robot and Automation in Huzhou, east China＇s Zhejiang Province all these production processes are executed by robots. ＂Robotic production is five to 10 times more efficient than manual operation.＂ said Ha Enjing, head of Siasun＇s Brand Promotion and Public Relations Department.
文摘At 14：28 hours （Beijing time） of May 12, 2008, a magnitude 8 earthquake jolted nearly half of Asia.Barely eight hours had passed before a regiment of the Chinese People＇s Liberation Army （PLA） left its base for the hardest-hit Sichuan Province to save lives. The No. 18 Artillery Regiment of the PLA 14th Army Group Corps arrived in Chengdu, the provincial capital, the following day. alighting from the at 18：00 hours of Immediately after train, officers and soldiers of the regiment were ordered to head for Mianzhu County just a few dozen kilometers from Wenchuan County, the epicenter, where up to 80% of the buildings had collapsed.
文摘THE Iron Man Triathlon challenges even the most veteran athlete. Competitors swim 3,000 meters, followed by a 40 kilometer bike race and ending with a i0 kilometer cross-country run.The Iron Man allows athletes to display their utmost abilities. As of January 1997, triathlete Wang Dan had accumulated the highest number of points of Asian iron man triathletes, according to the Asian Iron Man Triathlon Federation. Following her lead is Chinese triathlete Xing Lin. Liu Xiaodan, Chinese third ranking triathlete, comes in 5th among Asian competitors. All three girls are just 17 years old and all natives of Shenyang,
文摘The phrase "iron girl" is symbolic of an era. Widely used in the 1960s and the early 1970s, it was a term that described women who, in the spirit of sexual equality, found in themselves a physical strength that surpassed their psychologi cal expectations. With their might and power, they proved to society that women could do everything that men could. The title of "iron girl" was their pride.The well-known writer Fan Xiaoqing, was one such iron girl. She says the "iron girls" were nothing less than a quest for perfection.
