Treatment method for steel rolling waste oil

Abstract

The invention provides a treatment method for steel rolling waste oil. The method includes the following steps that: (1) a treatment liquid is added to waste oil, so that the treatment liquid can react with the waste oil until detection standards are satisfied, wherein the treatment liquid is a mixed acid; and (2) a reaction liquid in the step (1) is detected, if the pH value of the reaction liquid is less than 6.5, alkaline powder is added into the reaction liquid, so that the pH of the reaction liquid is adjusted to 7. With the method of the invention adopted, re-treatment devices such as adevice for additional distillation are not required; after the treating agent slowly reacts with the waste oil, and then the waste oil and impurities such as metal are converted into a water-soluble solution, and no waste smoke, waste residues, exhaust gas and odor are generated in a treatment process.

Description

technical field

[0001] The invention relates to the treatment technology of steel rolling waste oil, in particular to the environmental protection treatment and reuse technology of the three steel rolling wastes. Background technique

[0002] During the heating and rolling process of steel billet (steel ingot), hydraulic oil, gear lubricating oil, mechanical lubricating oil, etc. will gradually age and deteriorate due to high temperature and air oxidation during use, and the metal that is worn off by friction parts Moisture in the oil caused by powder, respiration and other reasons, and impurities intruded from the environment not only pollute the oil, but also promote the oxidation of various rolling oils, thereby continuously producing waste rolling oil. Moreover, with the development of the country and the upgrading of the steel industry, waste oil has also increased accordingly. The Chinese industry used to use methods such as soil backfilling and road oiling, but the M...