| In recent years, the amount of waste aluminum and waste glass increased sharply with the consumption boom of aluminum and glass in many fields. It is changed now that the reuse of waste aluminum and waste glass was simple, along with the energy sources crisis, resource absence and peoples' environment consciousness raised. Preparing composites of broken glass and waste aluminum is one of the effective methods, which are high-added value utilizations of both wastes. It is an original thought which is used to develop circular economy and vein industry in china. The combination of aluminum's toughness and glass's hardness is the advantageous factor adding the wastes' value. But the non-infiltration of glass particles by liquid aluminum, and dispersion difficulty of glass particles in liquid aluminum are the unfavorable factors in the preparing, and restrict these new composites' development and application.Research on particles reinforced aluminum matrix composites is hotspot in world. But using glass particles to reinforce aluminum matrix is unfamiliar, while the literature about this is also scarce. The new type of recycling materials has the both advantage of aluminum and glass particles.The main works of this thesis are as follows:1 Using mechanic stirring vortex method to prepare waste composites made of broken glass and waste aluminum is this paper's task, because the fabrication technology is very simple. The result is as follows after large numbers of experiments. Waste glass particles had been successfully decentralized into alloy melts in different content(5wt%,10wt%,15wt%) and different granularity(0.075～0.15mm and 0.15～0.42mm). The binding at interface between aluminum and glass was quite good. The waste glass particles were distributed very uniformly in matrix alloys and contribute to the increase of the MMC mechanic performances. The tensile breaking strength of MMC ranged from 88MPa to 108MPa, which was similar to the pure aluminum's. The MMC hardness was improved by two times when the content of the reinforcement particles was about 10wt%. The tensile breaking strength of the MMC was not linear relation with the increasing of glass particles' content, as so was the hardness. The high hardness could improve the abrasive resistance of composites during wear abrasion process. The abrasion ratio and abrasion value of the composites were decreased distinctly comparing to the aluminum matrix, the ratio was about (1: 4.62). The major abrasion mechanism of the composites is abrasive wear, besides this, there were adhere abrasion and a little heat abrasion and fatigue abrasion. During wear abrasion process, some glass particles were fallen out to the composite and packed on the surface. It aggravated the decreasing of wear resistance. The products made of MMC were corresponding to national standard(GB987～988-91,GB990-91). They had probationary certificates in some factories before being used in workspaces.2 The final target of this paper is the realization of controlling to technological processing, engineering manufacture, utilization of the two wastes in maximum, preparing eligible products. But in experiment, we found these factors restrict the composites' preparing and application, which include aluminum/glass weakly wetting,particles' difficult decentralizing into alloys. If the parameters operated were not appropriate, the glass particles agglomerated and floated. So the main contents of this paper was as follows: establishing the mathematic and physical dispersion models of glass particles in liquid aluminum by CFD numerical simulation and experiment, studying the behavior of particles dispersion, collision and agglomeration in liquid aluminum, studying the mixing system and its turbulence field, and solving the basic theoretical problems of glass particles' homogenization in composites.3 The article mainly used the professional software CFX4.4 to simulate the aluminum melt flow and mixing and transfer characteristics. The multi-reference frame and standard k-εturbulent model were used in the simulation. The simulation results indicated that the mixing process be dominated by the flow field in the stirred tank. The characteristics of turbulence had important effects on glass particles' dispersion and collision and agglomeration. Under the appropriate parameters controlled, the highest content of glass in alloys reached 20wt%, the average content was 15wt%. The results are of importance to the optimum of industry stirred reactors.4 In the stirring mixing example of the 0.150m diameter tank with two/three tier 45°pitched impellers, the results of CFD numerical simulation are as following: The distinction of fluid speeds was great. There were several fluid recurrences in tank, and the function of each recurrence was different. Circumfluence was harmful to particles dispersion. However, radial and axial recurrence was needed in preparing process. The fluid style created by 45°pitched impeller and flat impeller was appropriate to preparing process.5 When glass particles were added in alloys, the particle dispersion mechanism was wrapping mixing in convection. Eddy was similar to each other, particles dispersed well in alloys.When the fluid was controlled by convection and shearing action, eddy differed from each other. And the particles' following character was different.When the turbulence was becoming, eddy and its chart differed sharply, glass particles' collision occurred.6 The particles' following character is dominated by the eddy wave frequency of fluid. Glass particles' characteristic time is 1.13×10-2s,1.4×10-3s,0.35×10-3s, corresponding to granularity of 0.42mm,0.15mm,0.075mm. When the stirring speed reached 1000rpm, the 0.124mm particle is corresponding. The result indicated that particles of 0.075～0.124mm granularity have good following character. However, particles of 0.124～0.42mm granularity have legged effects.7 The dispersion behavior of particles in alloys was affected by the shape and granularity. In the heat influence of alloys, the gibbous surfaces of glass particles melt and had being glutinous, at the same time, the collision odds increased, thus the glass particles in alloys agglomerated. In the floating process, the agglomerated particles carried other particles in alloys.
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