Using cross-case analysis and comparison,combining the method of grounded theory and content analysis,the paper studies the operation model of steel logistics channel operators and the key factors to success.
The second part summarizes some theories about enterprise's planning of development strategy, including planning the enterprise's development strategy necessarily, main content about strategy planning, development history about theory of strategy planning and development situation in China, etc.
Iron ores have catalysis to the de-NOx efficiency. Vanadium and titanium bearing magnetic ore with higher content of TiO_2 and V_2O_5 has the strongest catalytic ability, and the de-NO efficiency is about 100% under the experiment condition.
However,the content of jarosite in the precipitates synthesized by strain GF is 5.53% higher than that synthesized by strain DY,but the content of ammonium jarosite in the precipitates synthesized by strain DY is 15.24% higher than that synthesized by strain GF.
the basicity slag system of CaO-SiO2-Al2O3 was chosen as a basic component in this experiment; V2O5, BaO and TiO2 were added to the basic slag system,V2O5 was singlely added to the molten slag,BaO was put into the slag with TiO2 at the same time. The experiment was performed by changing the content of these additions at the high-temperature.