From the angle fixed asset investment and with the factor analytic method, emphatically analyzes each essential investment factor in Jiangsu 1996-2002 economic growth,including the investment volume,investment ratio of various departments and the influenced condition of investment efficiency of various departments,and expounds the practical significance of the investment increase,the adjustment of investment structure,the enhancement investment efficiency to speed up the economic growth of Jiangsu,improves the economic growth quality.
Beginnings have been made by firms and research organizations to confront the challenges ahead by increasing R>amp;amp;D investment, patenting activity and adopting novel strategies.
On the basis of the analysis of the previous paper, the present work poses a series of problems in dilute-phase heat transfer technique as applied to chemical metallurgy, and illustrates its practical aspects through pilot-scale measurements and experiments in the development of new metallurgical processes.In actual practice, particles are more often than not in accelerative motion while heat is being transported between them and the surrounding fluid medium, with the result that the transfer coefficient se...
在前文的分析基础上,提出了将稀相技术应用于流态化冶金中換热过程时的一系列問題,并通过稀相換热的扩大实驗和中間工厂实践进一步闡明稀相流态化的应用。在工艺換热过程中顆粒在加速度状态下与周围的流体进行換热,因此換热系数并非为常数。本文通过一个加速度积分∫F(x)=integral from n=Re_0 to (Re_0+Re)((Re_s~xdRe_s)/(Ar_(Δρ)-fRe_s~2)),对換热設备的換热能力和压降特性用四个无因次数加以統一描述[式(28),(29),(31)和式(36)]。将稀相換热与多层浓相流态化床比較时,本文为流速的非齐次性提出式(43)所表示的多层流态化床的热量回收率关系,使之可与稀相換热[式(26)和式(26a)进行直接比較]。在进行稀相換热扩大实驗后,将稀相技术应用于貧铁矿的磁化焙烧和含低品位銅鈷氧化鉄矿的硫酸化焙烧中間工厂中,并指出采用稀相換热的設备投资仅为习俗設备的一个很小的百分数。指出稀相技术是一个流态化冶金中正在开始发展的領域,其中許多問題尚待进一步的探索和研究。
For the sake of treating chromium waste from the electroplating workshop, experiments on the electrolytic method of removing chromium were carried out. Results indicate that treatment of chromium waste with the electrolytic method may reduce the hexavalent chromium in the waste to the amount less than the maximum permissible mentioned in the Standards for waste-water effluents, technical control is simple and reliable and the sludge produced may be utilized. The method of double-electrode connection was a...
This paper discussed the necessity to construct ultra large blast furnaces with a inner volume up to 4000～4500m~3 in our country. These large furnaces should have high quality raw materials and operate with superhigh top pressure and superhigh blast temperature. In operation, they could reach the international prevailing standard, "the three 0.4′s", i.e., the coefficient of utilization of useful capacity 0.4m~3/t·day, coke ratio 0.4t/t iron and the silicon content in hot metal 0.4%. It is established that i...
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