Steel rolling oil sludge clearing agent and clearing method

A steel rolling oil sludge and separation technology, which is applied in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of increasing the cost of sludge treatment and high cost of degreaser, and realize resource utilization , low cost of sorting, and environmentally friendly production process

Active Publication Date: 2013-12-25
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to treat oil sludge, not only the cost of degreaser is high, but also a larg...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 1g6501, 3gLAS, and 2g sodium tripolyphosphate with an electronic balance, add water and stir for 5min with an electric stirrer to make 100g clear solution, then add 300g water to the beaker to dilute. Then weigh 100 g of undried oil sludge, add the above diluted clear liquid, add 40 g of spent alkali mud, and stir evenly. Adding alkali mud is to adjust the pH value of the suspension to 11. Then add 25g of undried cold-rolled waste acid mud to make the pH of the suspension 7.1. After standing for 5 minutes, you can see that there is an oil slick on the upper part of the beaker, and the iron scales sink to the bottom of the beaker. Scrape the oil layer on the upper part of the beaker into the oil drum, and introduce water into the container to remove other sludge. The mud at the bottom of the beaker has almost no peculiar smell, and it was put into a drying oven for drying. The residual oil rate of the iron-containing mud sample after drying was measured by the ther...

Embodiment 2

[0030] Weigh 2g6501, 1gLAS, 2g sodium tripolyphosphate, 1g sodium silicate and 1g sodium sulfate with an electronic balance, add water and stir for 5min with an electric stirrer to make 100g clear solution, add 400g water to the beaker to dilute. Then weigh 100g of undried oil sludge, add the above diluted liquid, stir with an electric mixer for 5min, then add 35g of waste alkali mud to adjust the pH value of the suspension in the beaker to 10.5, then add undried 10g of cold-rolled waste acid mud and 30ml of pickling waste liquid. The pH of the suspension in the beaker was measured to be 6.9. After the suspension in the beaker was left to stand for 5 minutes, it could be seen that there was an oil slick on the upper part of the beaker, and the iron scales sank on the surface of the beaker. the bottom of the beaker. Scrape the oil layer on the upper part of the beaker into the oil drum, and introduce water into the container to remove other sludge. The mud at the bottom of the...

Embodiment 3

[0034] Weigh 2g6501, 1.5gLAS, 1g sodium tripolyphosphate, and 1.5g sodium sulfate with an electronic balance, add water and stir for 5min with an electric stirrer to make 100g clear solution, add 400g water to the beaker to dilute. Then weigh 100g of undried oil sludge, add the above diluted clear solution, stir for 5min with an electric stirrer, add 37g of waste alkali mud to adjust the pH value of the suspension in the beaker to 10, add undried cold Roll 25g of waste acid mud, and the pH of the suspension in the beaker is 7. After the suspension in the beaker was left to stand for 5 minutes, it could be seen that there was an oil slick on the upper part of the beaker, and iron scales sank at the bottom of the beaker. Scrape the oil layer from the upper part of the beaker into the oil drum, and guide the water into the container to wash other sludge. The mud at the bottom of the beaker has almost no peculiar smell, and it was put into a drying oven for drying. The residual o...

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PUM

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Abstract

The invention provides a steel rolling oil sludge clearing agent and a clearing method. The clearing agent comprises the following components in percentage by mass: 1-2% of non-ionic surfactant 6501, 1-3% of anionic surfactant LAS, 2-4% of builder and the balance of water, wherein the builder comprises sodium tripolyphosphate, sodium silicate and sodium sulfate. The clearing method comprises the steps of preparing a clearing agent solution by utilizing the components in proportion, adding water with the amount 3-4 times that of the solution, adding hot rolling oil sludge into the diluted solution in the ratio of (1:4)-(1:5), uniformly stirring, adding cold rolling waste alkali mud in twice till the pH (Potential Of Hydrogen) value of the mixed liquid is adjusted to 6-8 and standing the suspension liquid for more than 5 minutes so as to separate the oil from iron scale in the oil sludge. The clearing agent and the clearing method provided by the invention have the advantages that the clearing cost is low; the clearing effect is good; the production process is friendly to environment; no secondary pollution is produced; the oil sludge, the cold rolling waste acid mud and the waste alkali mud in metallurgical works are fully utilized; the resource utilization of wastes is realized; the problem of oil sludge utilization is solved.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of metallurgical waste, and in particular relates to a cleaning and separating agent for rolling oil sludge and a cleaning and separating method thereof. Background technique [0002] In the process of hot rolling and continuous casting in iron and steel enterprises, a large amount of oxide scale is produced on the surface of the billet, which peels off under the action of mechanical force and water force, is washed into the trench and then enters the swirl well, and the finer scale is washed into the advection sedimentation pool. Because the rolling mill oil, gear oil, hydraulic oil and roller table oil are mixed in when the steel billet is rolled, the iron scale in the advection sedimentation tank contains oil, which is also called sludge. For example, the annual output of oil sludge in a large iron and steel plant reaches 30,000 tons, and the total iron content of the dried oil sludge ...

Claims

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Application Information

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IPC IPC(8): C02F11/00C01G49/06
Inventor 杨大正王红徐鹏飞张大奎王忠润钱峰王飞
Owner ANGANG STEEL CO LTD
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