Point of action: solid-liquid interface, and selective. The front end of the car is fitted with bumper, which not only has decorative function, but also is a safety device that absorbs and moderates the external impact force to protect the body and the occupant.
At present, in addition to maintaining the original protection function of the car front and rear bumper, but also the pursuit of harmony and unity with the body shape, the pursuit of its own lightweight car front and rear bumper are made of plastic, people called plastic bumper.
The plastic bumper is made of plastics, mainly polyester and polypropylene, which are made by injection molding. For example, the bumper of Peugeot 405 car is made of polyester and made by reaction injection molding. Volkswagen audi 100 Golf Shanghai Santana Tianjin xiali model car bumpers, adopted polypropylene materials made from injection molding in Abroad have a called polyethylene carbon ester plastic, seeping into alloy composition, using the method of metal injection molding processing of bumper not only has high strength, rigid, also has the advantages of can welding and coating performance is good, in the amount of cars more and more.
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Function: Improve hydrophobicity, increase floatability, promote bubble adhesion, and enhance adhesion firmness.
Second, the foaming agent
Action point: gas-liquid interface.
Function: reduce the surface tension of the interface, promote the air to diffuse in the slurry, form small bubbles, and prevent the merger of bubbles, increase the sorting interface, and improve the stability of the bubble.
Third, the adjustment agent
1. Activator
Action point: solid-liquid interface.
Role: to promote the role of collectors and mineral surfaces.
2. Inhibitor
Action point: solid-liquid interface.
Role: weaken the role between non-target minerals and collectors.
3. Medium pH adjuster
Point of action: pulp medium.
Role: adjust the electrical properties.
4. Dispersion and flocculant
Point of action: pulp.
Function: Disperse flocculated fine mud and reduce the impact.
5. Hydrocarbon oil capture process
(1) Hydrocarbon oil dispersion and adhesion;
(2) oil droplets unfolding;
(3) Forming an oil film.
Auxiliary capture of hydrocarbon oils: (1) assisted capture; (2) solvent, emulsifier
Classification and function of flotation reagents
    First, the collector