Abstarct: Entrainment results in large amounts of fine gangue materials reporting to flotation concentrates along with recovered valuable minerals and reduces the final product quality. In froth flotation, entrainment is the dominant recovery mechanism for fine gangue mineral particles, and it is influenced by a number of factors in both the pulp and froth phase, including particle properties (e.g. particle size and density) and flotation operational variables (e.g. gas flowrate, froth depth, sparger type and reagent dosage). A number of models incorporating different factors have been developed to estimate entrainment recovery. A two-level factorial and surface response test program to investigate the effect of solids content, gas flow rate, quantity and type of frother and collector dose on ENT and R_w to test surface response and particle size, sparger type and frother for a two-level factorial test design was adopted. The results showed, by changing the operating conditions of the flotation test, the value of ENT (0/851-0/071) is significantly different; which has caused a change in the value of R_g (0/23-0/006). The degree of entrainment is significantly affected by (1) collector dosage, (2) frother dosage, (3) solids percentage. Entrainment model baxsed on density and particle size as well as a water recovery model baxsed on gas retention was developed by changing operating parameters. Understanding the effect of frother agents on the degree of entrainment and water recovery is an important guide to adjusting flotation behavior. The effect of four types of frother agent, particle size and sparger type on the degree of entrainment and water recovery were compared. The results showed, the biggest effect on water recovery (R_w) and the degree of entrainment (ENT), respectively, are feed particle size, frother agent type and finally sparger type on water recovery and the degree of entrainment. An important aspect in using different frother agents was that they changed the structure of the foam, which varied significantly with the change of water recovery and the degree of entrainment. This was mostly because with the change of the type of frother agent, the surface tension was clearly changed with the change of the surface velocity of the liquid, and it affected the water recovery and the degree of entrainment, which led to an increase in the gas retention (i.e., a decrease in the liquid retention) and as a result There is less volume for water to pass.