Technology for treating rolled steel oiliness oil sludge through steel slag adsorption

A technology for rolling sludge and adsorption treatment, which is applied in sludge treatment, metallurgical wastewater treatment, water/sludge/sewage treatment, etc. It can solve the problem of not expressing the utilization method of sludge, and achieve the effect of low cost.

Active Publication Date: 2015-11-18
XINJIANG BAYI IRON & STEEL
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[0012] A process of using steel slag to absorb oily sludge from steel rolling, taking the hot stuffy slag process of a factory as an example, the steps are as follows:

[0013] 1. After the hot stuffy slag process is over, open the hot stuffy slag cover and pour steel rolling sludge into the slag pool containing hot stuffy slag. The mass ratio of the poured steel rolling sludge to steel slag is 1:60;

[0014] 2. Use an excavator to fully stir the steel slag and oil sludge. After stirring evenly, dig out the steel slag and enter the magnetic separation line of the steel slag for iron selection;

[0015] 3. The iron-containing fine powder after iron selection can be directly used in pelletizing plants or sintering plants, and the tailings are recommended for road and bridge construction fields.

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Abstract

The invention discloses a technology for treating rolled steel oiliness oil sludge through steel slag adsorption. Rolled steel oil sludge is poured into a slag pool containing steel slag, and the mass proportion of the poured rolled steel oil sludge and the steel slag is 1:60; the steel slag and the oil sludge are fully stirred through an excavator, and after even stirring is conducted, the steel slag is excavated and enters a steel slag magnetic separation line to conduct iron selecting work; fine powder containing iron after iron selecting is conducted is used for a pelletizing plant or a sintering plant, and tailings obtained after iron selecting are used for road and bridge construction. According to the technology, a steel slag treating device of an iron and steel enterprise is used, the technology can be implemented without any investment, cost is low, and the risk of environment pollution is avoided.

Description

technical field [0001] The invention relates to a process for using steel slag adsorption to treat oily sludge in steel rolling. Background technique [0002] The main pollutants in steel rolling wastewater are iron oxide scale and oil. The quality of circulating water after treatment is: suspended matter content ≤ 50mg / L, oil content ≤ 5mg / L. The water quality of steel rolling is mostly brown-red emulsion, the pH is generally 5.5-7.0, and the oil content is generally 40-80mg / L. The treatment method is generally "one sinking, two leveling, three filtering", "one sinking" means one Class cyclone sedimentation, mainly to remove large scale; "Second level" refers to advection sedimentation or inclined tube sedimentation, mainly to remove impurities with small particle size; "Three filtration" refers to high-speed filter, magnetic filter, etc. . The final concentrated sludge contains oil and water, as well as a large amount of iron oxide. This kind of rolling sludge is difficu...

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Application Information

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IPC IPC(8): C02F11/00C02F103/16
Inventor 黄星武俞海明王洪林朱君姜新平赵春晖赵序章戴达奎王健
Owner XINJIANG BAYI IRON & STEEL
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