CN101037289A - Method for recovering and reusing industrial acid-washed metal sludge in steel plate production - Google Patents
Method for recovering and reusing industrial acid-washed metal sludge in steel plate production Download PDFInfo
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- CN101037289A CN101037289A CN 200710020704 CN200710020704A CN101037289A CN 101037289 A CN101037289 A CN 101037289A CN 200710020704 CN200710020704 CN 200710020704 CN 200710020704 A CN200710020704 A CN 200710020704A CN 101037289 A CN101037289 A CN 101037289A
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- Treatment Of Sludge (AREA)
Abstract
The invention belongs to a new technics to produce ferric oxide for cement raw material and iron oxide black by solid wastes in the industry amor plats production which contains following steps: stacking the metal sludge generated by washing the metal with acid on the environmental ground, collecting the ferric oxide after oxidating and drying or adding acidic liquid into the metal sludge washed by acid to make it has a fluidity, then adding water and heating to more than 95 DEG C, and adding alkaline liquid, adjusting and mixing liquid to get pH=9-10, mixing uniformly, dehydrating and drying, then shattering to get a iron oxide black. The invention can recover all of metal solid wastes to achieve a environmental protection and a resource recovering. It solves millions of industrial solid wastes each year in china, which avoids the harm brought by the chemical treatment and deep-seated treatment to the living environment.
Description
Technical field
The invention belongs to a kind of solid waste production cement slurry ferric oxide and black iron oxide pigment novel process in the industrial steel plate production of utilizing.
Background technology
Development along with China's industrial economy construction, the expansion of various commercial production scale and the harmful solid waste brought constantly increase, particularly when producing steel plate, need utilize acidic substance such as sulfuric acid or hydrochloric acid that so-called acid treatment is carried out on the surface of metal sheet, with the oxide compound of removing metal sheet surface and greasy dirt etc., spent acid solution after the processing can form metal pickling mud in the bottom, pond of depositing spent acid solution through post precipitation.Present this metal sludge is deposited in refuse landfill mostly, along with increasing of the enterprise that produces steel plate, and the increase of steel plate output, this metal sludge is more and more, to such an extent as to landfill yard is unequal to burden, becomes the problem that environmental administration rather has a headache.The at present main fixed point landfill disposal mode that adopts, but such method cures the symptoms, not the disease, and not only takies a large amount of soils, and serious environment pollution, bring very big harm to existent environment of people, and the waste limited resources.
Summary of the invention
The object of the present invention is to provide a kind of method of recycling industrial acid-washed metal sludge in the steel plate production.
According to technical scheme provided by the invention, the metal sludge that it produces after with acid-washed metal is deposited in oxidation on the place in the natural air, dry back is collected and obtained ferric oxide.
Purpose of the present invention also can be achieved through the following technical solutions, and adds acid solution at metal pickling mud, makes it have flowability, add water again and be warming up to more than 95 ℃, add alkaline liquid again, adjust pH of mixed value 9～12, stir, dehydration, crushed after being dried obtain iron oxide black.
The spent acid solution that described acid solution is generated when being metal pickling mud, and the weight of adding acid solution is 5～30% of metal pickling mud; After metal pickling mud adds acid solution, add the water of metal pickling mud weight 20～30% again and mixed solution is warming up to 95～100 ℃; The drying of mixed solution after dehydration selected oven for drying for use, and the temperature of control baking is 200～300 ℃, and its water content of the mixture after the baking is controlled at below 12%; Described alkaline liquid is selected liquid caustic soda for use; The water ratio of dehydration back control mixture is 30～60%.
Advantage of the present invention is: utilize present method can make all metal solid wastes, realize environment friendly and pollution-free Waste recovery recycle and resource recovery, solved the industrial solid castoff of up to ten million tons in present China's every year, with the harm that brings to environment for human survival after chemistry and buried the processing; The present invention makes the Industrial Metal sludge treatment change into high-test metal smelting refining powder lot, as the metal ingredient complexity, can smelt into metal productss such as metal weights.After utilizing the present invention, both solved the environmental issue that these metal sludges caused, the enterprise of make a living again electrogenesis ladder or crane provides a kind of new approach that obtains counterweight.
Embodiment
Below in conjunction with embodiment the present invention is further described.
The method of industrial acid-washed metal sludge during recycling steel plate of the present invention is produced, the metal pickling mud that it produces after with acid-washed metal is deposited in oxidation on the place in the natural air, dry back is collected and obtained ferric oxide, this ferric oxide can be used in the cement slurry, with conventional manufacture of cement method, produce the cement clinker that meets national standard.
The method of industrial acid-washed metal sludge during recycling steel plate of the present invention is produced, spent acid solution (the utilization of waste material on the top layer, pond of depositing spent acid solution that it is generated when metal pickling pickling mud adds metal pickling mud, economize on resources), the spent acid solution add-on is preferably 5～30% of metal pickling mud weight makes it have certain flowability, this operation can be ready to later abundant reaction, add the water of metal pickling mud weight 20～30% again and be warming up to more than 95 ℃, be preferably in and be controlled at 95～100 ℃, add liquid caustic soda again, adjust pH of mixed value 9～12, stir, dehydration, dried material is pulverized with ball mill and is obtained iron oxide black, and the water ratio of dehydration back control mixture is 30～60%.
Select oven for drying for use in the drying of mixed solution after dehydration, the temperature of control baking is controlled at 200～300 ℃, and the mixture after the baking preferably is controlled at its water content below 12%, certainly, but also seasoning, its water content of dried mixture are controlled at below 12% to well.
Claims (7)
1, a kind of method of recycling industrial acid-washed metal sludge in the steel plate production is characterized in that: the metal sludge that produces behind the acid-washed metal is stacked gone up ground on the scene, oxidation in natural air, the collection of dry back obtain ferric oxide.
2, a kind of method of recycling industrial acid-washed metal sludge in the steel plate production, it is characterized in that: add acid solution at metal pickling mud, make metal pickling mud have flowability, add water again and be warming up to more than 95 ℃, add alkaline liquid again, adjust pH of mixed value 9～12, stir, dehydration, crushed after being dried obtain iron oxide black.
3, produce as recycling steel plate as described in the claim 2 in the method for industrial acid-washed metal sludge, it is characterized in that: the spent acid solution that described acid solution is generated when being metal pickling mud, and the weight that adds acid solution is 5～30% of metal pickling mud.
4, produce as recycling steel plate as described in the claim 2 in the method for industrial acid-washed metal sludge, it is characterized in that: after metal pickling mud adds acid solution, add the water of metal pickling mud weight 20～30% again and mixed solution is warming up to 95～100 ℃.
5, produce as recycling steel plate as described in the claim 2 in the method for industrial acid-washed metal sludge, it is characterized in that: the drying of mixed solution after dehydration selected oven for drying for use, the temperature of control baking is 200～300 ℃, and its water content of the mixture after the baking is controlled at below 12%.
6, produce as recycling steel plate as described in the claim 2 in the method for industrial acid-washed metal sludge, it is characterized in that: described alkaline liquid is selected liquid caustic soda for use.
7, produce as recycling steel plate as described in the claim 2 in the method for industrial acid-washed metal sludge, it is characterized in that: the water ratio of dehydration back control mixture is 30～60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020704 CN101037289A (en) | 2007-03-15 | 2007-03-15 | Method for recovering and reusing industrial acid-washed metal sludge in steel plate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020704 CN101037289A (en) | 2007-03-15 | 2007-03-15 | Method for recovering and reusing industrial acid-washed metal sludge in steel plate production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101037289A true CN101037289A (en) | 2007-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200710020704 Pending CN101037289A (en) | 2007-03-15 | 2007-03-15 | Method for recovering and reusing industrial acid-washed metal sludge in steel plate production |
Country Status (1)
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| CN (1) | CN101037289A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857297A (en) * | 2010-06-01 | 2010-10-13 | 河南豫光金铅股份有限公司 | Method for processing waste acid water discharged by system for preparing sulfuric acid from lead or zinc smelting flue gas |
| CN104529104A (en) * | 2014-12-30 | 2015-04-22 | 新奥科技发展有限公司 | Sludge pretreatment method |
| CN104529032A (en) * | 2014-12-15 | 2015-04-22 | 胡志刚 | Treatment method of hydrochloric acid waste liquid from steel pickling |
| CN106186531A (en) * | 2016-08-05 | 2016-12-07 | 孙硕 | A kind of turbulent flow type shallow slot pickling lines waste treatment processes |
| CN108793652A (en) * | 2018-07-26 | 2018-11-13 | 鞍山创鑫环保科技股份有限公司 | A kind of pickling sludge resource processing apparatus and technique |
-
2007
- 2007-03-15 CN CN 200710020704 patent/CN101037289A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857297A (en) * | 2010-06-01 | 2010-10-13 | 河南豫光金铅股份有限公司 | Method for processing waste acid water discharged by system for preparing sulfuric acid from lead or zinc smelting flue gas |
| CN101857297B (en) * | 2010-06-01 | 2011-12-14 | 河南豫光金铅股份有限公司 | Method for processing waste acid water discharged by system for preparing sulfuric acid from lead or zinc smelting flue gas |
| CN104529032A (en) * | 2014-12-15 | 2015-04-22 | 胡志刚 | Treatment method of hydrochloric acid waste liquid from steel pickling |
| CN104529104A (en) * | 2014-12-30 | 2015-04-22 | 新奥科技发展有限公司 | Sludge pretreatment method |
| CN106186531A (en) * | 2016-08-05 | 2016-12-07 | 孙硕 | A kind of turbulent flow type shallow slot pickling lines waste treatment processes |
| CN108793652A (en) * | 2018-07-26 | 2018-11-13 | 鞍山创鑫环保科技股份有限公司 | A kind of pickling sludge resource processing apparatus and technique |
| CN108793652B (en) * | 2018-07-26 | 2024-01-02 | 鞍山创鑫环保科技股份有限公司 | Pickling sludge recycling treatment device and technology |
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