1) Collector . It interacts with the surface of the mineral, and it adheres to the surface of the mineral to enhance the hydrophobicity of the mineral surface, which is beneficial to the collection of the ore particles on the bubbles.
2) Foaming agent. Foam is the medium for the floating of the ore during flotation.
3) Inhibitors. It is an agent that reduces the floatability of minerals. The surface of the ore particles can be formed into a hydrophilic film to form a colloidal adsorption film, thereby hindering the interaction of the collector with the mineral surface. At the same time, the inhibitor can also dissolve the adsorbed collector from the mineral surface or dissolve the active film which helps the collector to act.
4) Activator. It is to eliminate the inhibition, promote the floatability, and make the mineral surface cause the agent which is easy to interact with the collector. In the current production practice, some minerals can not directly adsorb the collector, often adding an activator to change the surface properties of the mineral, which is beneficial to the adsorption of the collector.
5) Medium conditioner. Its main function is to adjust the pH value of the pulp (pH value, representing pH), adjust the role of other agents, eliminate the harmful effects of ions on flotation, and adjust the dispersion and agglomeration of the slime.
Peristaltic pump
There are a few plaster sprayers that have a peristaltic pump (a tube squeezed by rollers) which also requires compressed air to produce a spray. These types of plaster sprayer can also spray textured coatings with particle sizes up to about 3mm diameter, providing that they are not solvent based.
Piston pump
Newer types of plaster sprayer have a piston pump, which has sufficient pressure to spray smooth (untextured) plaster without compressed air. Full airless pumps are sometimes used to spray smooth plaster, although they are not ideal as the flow rate is too low for volume projects; however, they can be used to spray solvent-based plasters.
Air operated piston type supply pumps can put out as much as 27 gpm. Like the Graco Bulldog 10:1 at about 9 gpm and the Lincoln Pile driver 5:1 at about 27 gpm. These flow-rates are calculated at a maximum of 120 cfm air supply. Material supply hoses are medium pressure at about 600 psi. These pumps are material supply pumps only and additional air is required at the Spray Gun to propel the material to the surface. These guns are usually an internal mixture type guns where the material and air exits the gun together.
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