Abstract:The characteristics of both the piston stamping forming machine and the die roller briquetting machine were combined. The piston stamping forming machine has low energy consumption and low productivity while the die roller briquetting machine has high productivity and high energy consumption, a new kind of roller briquetting method was put forward, and the prototype was designed and manufactured. Compared with other same type briquetting machine, a series of plungers distributed on the roller mesh into the ring die holes in the briquetting process, which could avoid the loss of energy consumption and the serious wear problem in the process of biomass materials squeezed outside ring die holes. In order to test the property of this briquetting machine, the orthogonal experiment was preceded. Results showed that the optimal processing parameters for the roll briquetting machine with plungers: the length to diameter ratio of forming mould is 525, the spindle speed is 47.25r/min, and the moisture content of raw material is 15%. Under the optimal processing parameters, sawdust was used as raw material for the briquetting test. Experimental results showed that the diameter of the forming particle is 10mm, the density of forming particle is 1.15g/cm3, the mechanical durability is 96.28%, the productivity of the briquetting machine is 75kg/h, the energy consumption is 56kW·h/t, the forming rate is 95%, and the working noise is 79dB. All the indexes meet the design requirements, and realize continuous and stable production. This has a certain role in promoting the development of biomass curing technology, and the briquetting method put forward in this paper provides the reference for the biomass densification technology and the development of the same kind equipment.
