Experiments were carried out by testing the specimens of separate layers of iron and coal and single pellets thermogravimetrically in a nitrogen atmosphere to study the non-isothermal reduction mechanisms of vanadium-titanomagnetite-non-coking coal mixed pellets. The degree of reduction was measured by the weight loss. The E values of the pellet reduction were calculated based on the mass action law. It was found that with increasing temperature the reduction processes may be divided into four stages: reduction via CO and H 2 from volatiles at 400-650uC, reduction via H 2 and C generated by cracking of hydrocarbon at 650-850uC, direct reduction of carbon via gaseous intermediates at 850-1050uC and direct reduction of carbon above 1050uC.

The present application and existing problems of pump in chemical works are introduced, then, pump’s controlling principle, especially which with frequency conversion technology, is mentioned. The energy-saving controlling of frequency conversion on pump is studied in detail based on the study of the starting, operation and redundancy configuration of pump. The result shows that energy can be saved on the starting, operation and redundancy configuration of pump with the frequency conversion technology. The energy-saving through frequency conversion controlling is related to actual running efficiency of pump and it has limitation. When pump’s running efficiency is high, the energy-saving result is unapparent. While pump’s running efficiency is low, the energy-saving result is outstanding.

Vanadic-titanomagnetite-coal mixed pellets with minor addition of Na2CO3 were reduced isothermally at 900°C, 945°C, 1100°C, 1255.4°C and 1300°C. The variables parameters studied are temperature, the amount of carbon and the amount of Na2CO3 as additive. The experiment was designed with the technique of orthogonal regression in order to quantitatively assess the effect of each variable and the interactional effect of different variables. It is found that temperature, the amount of carbon and the amount of Na2CO3 as additive substantially influence the degree of reduction and metallization, and the presence of Na2CO3 can increase the reducibility of the pellets. The interaction of temperature and the amount of Na2CO3 have negative influences on the degree of reduction and metallization.

In order to meet the requirements of product design and find suitable combination of within a short time, the concept of Knowledge-body based on BOM (KBOM) was put forward, which consisted of basic entities that could support all activities throughout product lifecycle with less redundancy, and all the product data throughout product lifecycle was associated with the core of KBOM directly or indirectly. A reusable and sharable configuration model of product was established to represent domain-specific knowledge based on KBOM. Genetic algorithm was used to solve the issue concerned with BOM configuration in a short time with value coefficient, quality level and reliability as evaluation parameters. Finally, as a case study, the display module of a notebook was analyzed. The results indicate that the evaluation can be effectively applied in a large-scale BOM configuration.

In order to get a feasible better machining path for holes machining, which could be used to the NC (Numerical Control) programming, the algorithm for Holes Machining Path Planning (HMPP) based on Ant colony optimization (ACO) were designed. The value of the algorithm parameters were determined by computer simulation experiment. The Roulette Wheel Approach (RWA) was used by each ant to select the next milling point, and only global pheromone updating was adopted. Finally, an example was given, and the approach was proved to be efficient and practical.