CN1039571A - The processing method of utilizing the waste liquid behind the steel derusting to produce product - Google Patents
The processing method of utilizing the waste liquid behind the steel derusting to produce product Download PDFInfo
- Publication number
- CN1039571A CN1039571A CN 88104438 CN88104438A CN1039571A CN 1039571 A CN1039571 A CN 1039571A CN 88104438 CN88104438 CN 88104438 CN 88104438 A CN88104438 A CN 88104438A CN 1039571 A CN1039571 A CN 1039571A
- Authority
- CN
- China
- Prior art keywords
- processing method
- waste liquid
- product
- iron
- iron oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/18—Nitrates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
Abstract
The present invention relates to the method for treating waste liquid behind the steel derusting, especially is that base-material adds the processing method that the rust-removing agent for iron and steel waste liquid of an amount of additive is produced ammonium chloride, iron oxide black, iron oxide red, ferric oxide product with hydrochloric acid or with hydrochloric acid.Processing method of the present invention is: waste liquid is produced ammonium chloride, iron oxide black, iron oxide red, ferric oxide product through purification, oxidation, interpolation ammoniacal liquor, precipitation, separation, drying, calcining.This processing method has less investment, instant effect, and cost is low, has solved emission pollution problem, and ferric oxide purity can reach more than 95% or 99%.
Description
The present invention relates to the method for treating waste liquid behind the steel derusting, is the rust-removing agent for iron and steel that base-material adds an amount of additive with hydrochloric acid or with hydrochloric acid especially, the processing method of utilizing the waste liquid after the rust cleaning to produce ammonium chloride, iron oxide black, iron oxide red, ferric oxide product.
Steel derusting belongs to anticorrosive metal and decorates, and (draws, dials) derusting process before the coating before the processing of rust cleaning and metal.Waste liquid behind the steel derusting is with cold method precipitate and separate part iron protochloride from waste liquid at present, but current being directed to hydrochloric acid or with hydrochloric acid is the rust-removing agent for iron and steel that base-material adds an amount of additive, how waste liquid after the rust cleaning solves the situation of exhaust emission, most medium and small sized enterprises ability does not solve this situation, and it is that oxygenant adds a certain proportion of ammonium hydrolysis the problems referred to above of having determined that the present invention of this kind situation is adopted with the air.
The purpose of this invention is to provide a kind of product processing method of utilizing the waste liquid behind the steel derusting to produce ammonium chloride, iron oxide black, iron oxide red, ferric oxide.
The present invention is achieved in that with hydrochloric acid or with hydrochloric acid to be that the waste liquid that base-material adds after the rust-removing agent for iron and steel rust cleaning of an amount of additive is a raw material, is the processing method that oxygenant makes the waste liquid after the rust cleaning produce ammonium chloride, iron oxide black, iron oxide red, ferric oxide product through purification, oxidation, interpolation ammonium water, precipitation, separation, drying, calcination with the air.
The realization of processing method of the present invention has less investment, instant effect, characteristics such as cost is low, and quality is good; Having solved the discharging of waste liquid pollution problem behind the steel derusting simultaneously, made waste liquid become multiple product, is example with 1000 kilograms of waste liquids, can produce 160 kilograms of ferric oxide, and purity can reach more than 95% or 99%, and ammonium chloride product can reach 220 kilograms.
Processing method to detail of the invention process is further described below:
The present invention is to be that the rust-removing agent for iron and steel rust cleaning back waste liquid that base-material adds an amount of additive is a raw material with hydrochloric acid or with hydrochloric acid, and through purification impurity elimination thing, certain ammonium water is added in the bubbling air oxidation, precipitation, separates; Be separated into two kinds of materials, a kind of is solid sediment, and another kind is a filtrate, and solid sediment is iron black product; Solid sediment generates iron oxide red product or ferric oxide product during again through 700 ℃ to 800 ℃ of calcination; Another kind of processing method is the filtrate heating after separating to be concentrated reach crystalline state, again through filtering the dry ammonium chloride product that generates.
In the method for the invention, the air oxidation temperature is 30 ℃ to 90 ℃, and PH is 7 to 9, adds ammonia vol and suitably regulates by the waste liquid pH value.
Claims (5)
1, the method for treating waste liquid behind the steel derusting, it is characterized in that with hydrochloric acid or with hydrochloric acid being that the waste liquid that base-material adds after the rust-removing agent for iron and steel rust cleaning of an amount of additive is a raw material, is the processing method that oxygenant makes the waste liquid after the rust cleaning produce ammonium chloride, iron oxide black, iron oxide red, ferric oxide product through purification, oxidation, interpolation ammoniacal liquor, precipitation, separation, drying, calcination with the air.
2, processing method according to claim 1 is characterized in that producing iron black product processing method and is, waste liquid is through purification impurity elimination thing, and ammoniacal liquor is added in the bubbling air oxidation, precipitates, is separated into iron black product.
3, processing method according to claim 2, it is characterized in that the processing method of producing iron oxide red or ferric oxide product is, the solid sediment after the separation (iron black product) becomes iron oxide red product or ferric oxide product for 700 ℃ to 800 ℃ through calcination again.
4, processing method according to claim 1 is characterized in that the processing method of producing ammonium chloride product is, waste liquid is through purification impurity elimination thing, and ammonia precipitation process is added in the bubbling air oxidation, is separated into filtrate; Concentrate through heating again and reaches crystalline state, refilter, drying becomes ammonium chloride product.
5, according to the described processing method of claim 2 to 4, it is characterized in that the atmospheric oxidation temperature is 30 ℃ to 90 ℃, PH is 7 to 9, adds the ammonium water yield and suitably regulates by the waste liquid pH value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104438 CN1039571A (en) | 1988-07-17 | 1988-07-17 | The processing method of utilizing the waste liquid behind the steel derusting to produce product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88104438 CN1039571A (en) | 1988-07-17 | 1988-07-17 | The processing method of utilizing the waste liquid behind the steel derusting to produce product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1039571A true CN1039571A (en) | 1990-02-14 |
Family
ID=4833012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88104438 Pending CN1039571A (en) | 1988-07-17 | 1988-07-17 | The processing method of utilizing the waste liquid behind the steel derusting to produce product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1039571A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864152A (en) * | 2012-12-17 | 2014-06-18 | 重庆华浩冶炼有限公司 | A method of producing iron red by utilization of waste liquid of copper coated iron powder production |
| CN105217694A (en) * | 2015-08-26 | 2016-01-06 | 昆明理工大学 | A kind of method preparing red iron oxide and ammonium chloride |
| CN106186531A (en) * | 2016-08-05 | 2016-12-07 | 孙硕 | A kind of turbulent flow type shallow slot pickling lines waste treatment processes |
-
1988
- 1988-07-17 CN CN 88104438 patent/CN1039571A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864152A (en) * | 2012-12-17 | 2014-06-18 | 重庆华浩冶炼有限公司 | A method of producing iron red by utilization of waste liquid of copper coated iron powder production |
| CN103864152B (en) * | 2012-12-17 | 2016-12-28 | 重庆有研重冶新材料有限公司 | A kind of method utilizing the waste liquid producing iron bronze composite powder to produce iron oxide red |
| CN105217694A (en) * | 2015-08-26 | 2016-01-06 | 昆明理工大学 | A kind of method preparing red iron oxide and ammonium chloride |
| CN106186531A (en) * | 2016-08-05 | 2016-12-07 | 孙硕 | A kind of turbulent flow type shallow slot pickling lines waste treatment processes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |