Recyclable treatment process of release agent for pressure casting

Abstract

The invention discloses a recyclable treatment process of a release agent for pressure casting. The process comprises the following steps: (1) pretreating release agent waste liquid: filtering twice through a coarse filter unit and a fine filter unit, introducing into an oil separator, and then enabling the waste liquid to flow into a waste water tank for storage; (2) lifting the waste liquid in the waste water tank into a cavitation air floatation machine through a lift pump, adding acid or alkali into the cavitation air floatation machine, and adjusting the pH value of the waste liquid to aset range; then adding PAC and anionic PAM into the cavitation air floatation machine, enabling the waste liquid to be subjected to flocculation and coagulantion enhancement reactions, starting a slagscrapping machine at regular time for scrapping scum, lifting the scum to enable the scum to be discharged into a sludge thickening tank through an air flotation sludge pump; then enabling the wasteliquid to flow into a hydrolysis aerobic tank; (3) equipping the hydrolysis aerobic tank with an ozone machine, performing blast aeration on the hydrolysis aerobic tank, evenly diffusing ozone into awater body through the aeration, and degrading organic pollutants in the water thoroughly; (4) enabling the waste liquid subjected to biochemical treatment to flow into a sedimentation tank entrainingexfoliated microorganic films, wherein the sedimentation tank is built by adopting an inclined tube sedimentation tank; (5) enabling the waste liquid subjected to sedimentation to be introduced intoa clean water basin, wherein a water quality testing device is arranged in the clean water basin, a return pipe is mounted in the clean water basin, and the other end of the return pipe is connected with the waste water tank.

Description

technical field [0001] The invention relates to the technical field of die-casting, in particular to a process for recyclable treatment of a release agent for die-casting. Background technique [0002] In the modern die-casting manufacturing industry, release agents are often used. The release agent is a functional substance between the mold and the finished product. The role of the release agent is to prevent the die-casting product from sticking to the mold after it is formed in the mold, resulting in failure to open the mold or damage to the casting, resulting in production failure and loss. Mold release agents are chemically resistant and do not dissolve when in contact with the chemical composition of different resins (especially styrene and amines). The release agent also has heat and stress resistance, and is not easy to decompose or wear; the release agent adheres to the mold and does not transfer to the workpiece to be processed, and does not hinder painting or ot...

AI Technical Summary

Problems solved by technology

The role of the release agent is to prevent the die-casting product from sticking to the mold after it is formed in the mold, resulting in failure to open the mold or damage to the casting, resulting in production failure and loss