Method for cooperatively treating emulsified oil sludge by sintering system

Abstract

The invention discloses a method for cooperatively treating emulsified oil sludge by a sintering system. The method comprises the following steps: S1, uniformly mixing: uniformly mixing the emulsifiedoil sludge, water treatment sludge and ironmaking fly ash according to a mass ratio of 1: (2-4): (5-7) to obtain dust sludge; S2, secondary uniform mixing: performing secondary uniform mixing on thedust sludge uniformly mixed in the step S1, OG coarse particles and pellet undersize powder according to a mass ratio of (1-3): (2-4): (3-7); S3, sintering and mixing: conveying materials which are uniformly mixed for the second time in the step S2 to a mixer; mixing the materials into sintering raw materials in proportion to obtain a mixture; pelletizing the mixture through a disc; and feeding the pelletized mixture into a sintering machine to be digested with the mass percent of the materials in the mixture being 0.5%-1%. The method is simple in process; consumption of emulsified oil sludgeand recycling of iron-containing resources can be achieved by means of an existing sintering machine and matched environment-friendly facilities of iron and steel enterprises.

Description

technical field [0001] The invention relates to the field of resource and environment protection, and more specifically relates to a method for co-processing emulsified oil sludge by a sintering system. Background technique [0002] During the rolling process of strip steel, the prepared emulsified oil should be sprayed circularly between the roll system and the roll gap to cool, lubricate, and take away the metal, metal oxides and dust on the surface of the roll and the rolled material. The effect is to make the surface of the rolled steel have a good surface finish. The emulsified oil is composed of 10% palm oil and 90% water. During the use of the emulsified oil, iron-containing impurities are brought out by washing the surface of the strip steel, and the emulsified oil sludge is discharged after precipitation and magnetic filter filtration. The emulsified oil after treatment Liquid can be recycled. [0003] Emulsified sludge is mainly composed of iron filings, palm oil...

AI Technical Summary

Problems solved by technology

There are difficulties in the implementation of this method: one is that the steel rolling sludge is thicker and difficult to filter; the other is that the method uses hot air to dry and emulsify the sludge, and the exhaust gas after drying is difficult to meet the discharge standards; the third is to use 1% to 2% iron The sludge is mixed with the sintering raw materials, and the total volatile content of the sintering ingredients is not evaluated, which may affect the electrostatic precipitator equipment. There is also no requirement for the sintering flue gas treatment system, and there is a risk of dioxin exceeding the standard

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