Based on the comprehensive experimental test-bed of blast furnace slag waste heat recovery, we study the impacts which are caused by the changes of the key parameters, such as blast furnace slag discharged temperature, the speed of the granulation device, on the particle diameter distribution and sphericity, so as to master the best operating parameters of the blast furnace slag dry granulation, and provide experimental basic materials for blast furnace slag waste heat recovery. The results show that: when the discharged temperature of the blast furnace slag is controlled in 1400°C～1450°C, and the speed of the granulation device is controlled above 2000r/min, the sphericity is better, and 80% of the particle’s diameter will be 2～5mm.

In this paper, a novel biomass pyrolysis and liquefaction system using blast furnace as heating source was presented. The system is composed of three parts: blast furnace slag granulation, biomass pyrolysis centrifuge reactor, and the waste heat of blast furnace as the heat source. As the cost of biomass pyrolysis was greatly reduced, this system has a promising application prospect.

A novel biomass pulverization technology was presented, and its performance is affected by many aspects, which have not been studied and optimized. This paper mainly concerns with a detailed study of the effect of rotor speed. The pulverization tests were conducted in a lab-scale crushing system and the results show: higher rotor speed improves the hit probability between blades and materials, enhancing the impacting and grinding effects. Thus higher rotor speed generates much finer particles. Meanwhile the energy consumption shows increasing trend with increasing rotor speed.

A heating experimental system using waste heat from washing Blast Furnace Slag (BFS) water is designed. The effect of corrugated angle, on the property of self-cleaning plate shell heat exchanger and the system typical working conditions was investigated. The results show that: the corrugated angle, as the key factor for the heat transfer property of self-cleaning plate shell heat exchanger, produces intense turbulent flows. It enhances the heat exchanger efficiency and reduces the scaling on the plate.

In this paper a novel two-inlet MSW shredder was presented to overcome the intermission work of the single-course shredder. The reliability of the two-inlet shredder was investigated and four organic constituents of MSW namely plastic, kitchen garbage, leaves and branch were shredded in the two-inlet shredder to evaluate the shredder adaptability to MSW complex composition. The results show that compared with single-course shredder, the two-inlet operation mode improves shredding efficiency and reduces energy consumption to a great extent. With the double-inlet operation，about 73% as much energy is used per gram as with the single-course shredder. The shredder is much more effective for the pulverization of soft, ductile and fibrous materials (kitchen garbage and leaves in the test), but it is not good at the brittle material (branch). A total of 57.7% product of branch is below 10mm in size, while for kitchen garbage and leaves, the values are 97.7% and 92.5% respectively. And the value is the lowest for plastic, only 38.0 %.