CN102896039A - Preparation method for refining reduced iron from second zinc oxide industrial residues - Google Patents
Preparation method for refining reduced iron from second zinc oxide industrial residues Download PDFInfo
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- CN102896039A CN102896039A CN 201210394619 CN201210394619A CN102896039A CN 102896039 A CN102896039 A CN 102896039A CN 201210394619 CN201210394619 CN 201210394619 CN 201210394619 A CN201210394619 A CN 201210394619A CN 102896039 A CN102896039 A CN 102896039A
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- iron
- iron powder
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Abstract
The invention discloses a preparation method for refining reduced iron from second zinc oxide industrial residues. The reduced iron is refined by performing ten process flows of crushing, ball milling, magnetic separation, ball milling grading, stirring, spiral drying, cooling, storing and packaging on the industrial residues. The grade of the iron refined from the second zinc oxide industrial residues can reach 85-90 percent by adopting the process flows adopted by the invention. Not only is waste changed into a new raw material but also the pollution to the neighboring environment is reduced.
Description
Technical field:
The present invention relates to the preparation method that a kind of secondary zinc oxide industrial residue refines reduced iron.
Background technology:
Mainly contain certain coal and iron substance in the secondary zinc oxide industrial residue, industrial residue just becomes useless rubbish without extracting, and environmental pollution is very large, and it has wasted resource.
Summary of the invention:
The purpose of this invention is to provide the preparation method that a kind of secondary zinc oxide industrial residue refines reduced iron.
The present invention adopts following technical scheme to realize its goal of the invention, a kind of secondary zinc oxide industrial residue refines the preparation method of reduced iron, and its adopts and industrial residue is carried out fragmentation, ball milling, magnetic separation, ball milling, classification, stirring, spiral oven dry, cooling, storing, ten techniques of packing finishes;
Broken: with the industrial residue crusher in crushing;
Raw material pellets mill: adopt ball mill to carry out the ball milling powdered industrial residue of fragmentation;
Magnetic separation: the powder behind the ball milling is carried out coal, iron separation with cylinder magnetic separator, extract the iron powder operation;
Elementary sphere of powder mill: with magnetic separation iron powder out ball mill ball milling, fineness (80-100 order);
Classification: be the iron powder of (80-100 order) with fineness behind the ball milling, use the shaking table classification, iron-holder (85-90%), the mine tailing of doing not up to standard is processed;
Dosing is stirred: the iron powder of iron-holder (85-90%) is put into mixer stir, add antioxidant during stirring, prevent oxidation of iron powder;
The spiral oven dry: the iron powder after will stirring adopts reduced iron inside spin drying machine drying, and humidity is no more than %1, and temperature is (350-450) degree in the reduced iron inside spin drying machine drying;
Cooling: the iron powder after will drying cools off by inner-spiral type reduced iron powder air-cooling device, becomes normal temperature 20 degree;
Storing: iron powder suction storing logical sequence stores after will cooling off.
Owing to adopted technique scheme, the present invention has realized its goal of the invention preferably, adopts the present invention that main coal in the secondary zinc oxide industrial residue is extracted with iron substance and separates, and is about to rubbish and has become new raw material, has reduced again the pollution to surrounding enviroment.
The specific embodiment:
Below in conjunction with embodiment content of the present invention is described further.
Embodiment 1:
By summary of the invention as can be known, a kind of secondary zinc oxide industrial residue refines the preparation method of reduced iron, and its adopts and industrial residue is carried out fragmentation, ball milling, magnetic separation, ball milling, classification, stirring, spiral oven dry, cooling, storing, ten techniques of packing finishes.
Broken: with the industrial residue crusher in crushing.
Raw material pellets mill: adopt ball mill to carry out the ball milling powdered industrial residue of fragmentation.
Magnetic separation: the powder behind the ball milling is carried out coal, iron separation with cylinder magnetic separator, extract the iron powder operation.
Elementary sphere of powder mill: with magnetic separation iron powder out ball mill ball milling, fineness (80-100 order).
Classification: be the iron powder of (80-100 order) with fineness behind the ball milling, use the shaking table classification, iron-holder (85-90%); The mine tailing of doing not up to standard is processed.
Dosing is stirred: the iron powder of iron-holder (85-90%) is put into mixer stir, add antioxidant during stirring, prevent oxidation of iron powder; Described mixer is (patent No. is 201220526964.6, and patent name is the box iron powder mixer of tooth) special mixing plant of my company's invention; Adding antioxidant during described stir is that the special equipment of (patent No. is 201220527120.3, and patent name is liquid medicine air pressure liquid-jet device) of my company's invention carries out the dosing effect to iron powder for adopting.
The spiral oven dry: the iron powder after will stirring adopts reduced iron inside spin drying machine drying, and humidity is no more than %1, and temperature is (350-450) degree in the reduced iron inside spin drying machine drying; Described reduced iron inside spin dryer refers to that the patent No. of my company's invention is the drying plant of (201220528140.2).
Cooling: the iron powder after will drying cools off by inner-spiral type reduced iron powder air-cooling device, becomes normal temperature 20 degree; Described inner-spiral type reduced iron powder air-cooling device refers to that the patent No. of my company's invention is the cooling device of (201220527217.4).
Storing: iron powder suction storing logical sequence stores after will cooling off.
Claims (1)
1. a secondary zinc oxide industrial residue refines the preparation method of reduced iron, it is characterized in that its adopts industrial residue is carried out fragmentation, ball milling, magnetic separation, ball milling, classification, stirring, spiral oven dry, cooling, storing, ten techniques of packing to finish;
Broken: with the industrial residue crusher in crushing;
Raw material pellets mill: adopt ball mill to carry out the ball milling powdered industrial residue of fragmentation;
Magnetic separation: the powder behind the ball milling is carried out coal, iron separation with cylinder magnetic separator, extract the iron powder operation;
Elementary sphere of powder mill: with magnetic separation iron powder out ball mill ball milling, fineness (80-100 order);
Classification: be the iron powder of (80-100 order) with fineness behind the ball milling, use the shaking table classification, iron-holder (85-90%), the mine tailing of doing not up to standard is processed;
Dosing is stirred: the iron powder of iron-holder (85-90%) is put into mixer stir, add antioxidant during stirring, prevent oxidation of iron powder;
The spiral oven dry: the iron powder after will stirring adopts reduced iron inside spin drying machine drying, and humidity is no more than %1, and temperature is (350-450) degree in the reduced iron inside spin drying machine drying;
Cooling: the iron powder after will drying cools off by inner-spiral type reduced iron powder air-cooling device, becomes normal temperature 20 degree;
Storing: iron powder suction storing logical sequence stores after will cooling off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210394619 CN102896039A (en) | 2012-10-17 | 2012-10-17 | Preparation method for refining reduced iron from second zinc oxide industrial residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210394619 CN102896039A (en) | 2012-10-17 | 2012-10-17 | Preparation method for refining reduced iron from second zinc oxide industrial residues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102896039A true CN102896039A (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210394619 Pending CN102896039A (en) | 2012-10-17 | 2012-10-17 | Preparation method for refining reduced iron from second zinc oxide industrial residues |
Country Status (1)
| Country | Link |
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| CN (1) | CN102896039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174861A (en) * | 2014-07-09 | 2014-12-03 | 邱建彪 | Comprehensive recycling process of second zinc oxide rotary kiln tailings and production line of comprehensive recycling process |
| CN104195277A (en) * | 2014-09-10 | 2014-12-10 | 连云港市东茂矿业有限公司 | Method for recovering and reducing iron powder from smelting slag of lead zinc ores |
-
2012
- 2012-10-17 CN CN 201210394619 patent/CN102896039A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174861A (en) * | 2014-07-09 | 2014-12-03 | 邱建彪 | Comprehensive recycling process of second zinc oxide rotary kiln tailings and production line of comprehensive recycling process |
| CN104195277A (en) * | 2014-09-10 | 2014-12-10 | 连云港市东茂矿业有限公司 | Method for recovering and reducing iron powder from smelting slag of lead zinc ores |
| CN104195277B (en) * | 2014-09-10 | 2016-06-15 | 连云港市东茂矿业有限公司 | The method reclaiming reduced iron powder from Pb-Zn deposits metallurgical slag |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130130 |