Emulsified oil taking waste lubricating oil as basic raw material and preparation method of emulsified oil

The invention discloses emulsified oil taking waste lubricating oil as a basic raw material and a preparation method of the emulsified oil and belongs to the technical field of emulsified oil. The emulsified oil is prepared from the following raw materials in parts by weight: 80-85 parts of waste lubricating oil; 5-10 parts of an emulsifier; 0.5-1 part of an anti-wear agent; 0.2-1 part of a pH value regulator; 2-5% of an antirust agent; and 0.2-0.6 part of a bactericide. The waste lubricating oil is adopted as a main raw material, so that environmental pollution of the waste lubricating oil isreduced; the waste lubricating oil can be easily decomposed by microorganisms after being converted into emulsified oil for use, so that the treatment problem of the waste lubricating oil is solved;the raw materials are easy to obtain and low in price; and the product has price advantage; and compared with the use amount of emulsifiers used by products similar to the emulsified oil of the invention, the use amount of the