CN105925794A - Metallurgical waste material bonding clustering process - Google Patents
Metallurgical waste material bonding clustering process Download PDFInfo
- Publication number
- CN105925794A CN105925794A CN201610549695.8A CN201610549695A CN105925794A CN 105925794 A CN105925794 A CN 105925794A CN 201610549695 A CN201610549695 A CN 201610549695A CN 105925794 A CN105925794 A CN 105925794A
- Authority
- CN
- China
- Prior art keywords
- metallurgical
- dead meal
- drying oven
- drying
- inorganic adhesive
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
Abstract
The invention discloses a metallurgical waste material bonding clustering process, relates to a metallurgical pelletizing preparation process and aims to provide a metallurgical waste material bonding blocking process which is simple and beneficial to steel smelting, wherein an obtained metallurgical pellet is large in intensity. The process comprises the following steps that firstly, an adhesive is prepared, wherein water-based sodium silicate which resists high temperature up to 900 DEG C and resists pressure up to 5 MPa is selected as the inorganic adhesive; secondly, fine materials obtained after metallurgical waste materials are sieved are conveyed to a drying oven, the drying oven dries the waste materials, and finally the water of the waste materials is controlled within 2-3%; thirdly, the dried waste materials and the inorganic adhesive are loaded into a stirrer according to the proportion, by mass percent, of (50:2)-(50:5), the stirrer stirs the added materials fully, and a mixture is obtained; fourthly, the mixture is fed into a forming machine and prepared into block objects or spherical objects; and fifthly, the block objects or the spherical objects are fed into a special drying oven, the temperature of the drying oven is adjusted to 170-190 DEG C, after drying is carried out for 15-25 minutes, finished products are obtained.
Description
Technical field
The present invention relates to a kind of metallurgical agglomerating process.
Background technology
Modern steel enterprise, in the production process of steel-making, all can produce substantial amounts of Metallurgical Solid Wastes (such as: mud, ferrum oxide
Skin, comminuted steel shot, powder of returning mine, high product slag particle, coarse granule), these Metallurgical Solid Wastes occupy substantial amounts of arable land, contaminated air, with
Time, in these Metallurgical Solid Wastes containing 40 70% ferrum element, be the best raw material of steel-making, but add in steel-making fashionable, because of it
Own wt is light, and major part is discharged into flue by dedusting wind, remaining floats on molten steel surface, forms one layer of the same skin of medicated porridge, not only
Do not reach cooling, but also gas may be boiled in a covered pot over a slow fire, increase spray stove dangerous.STEELMAKING PRODUCTION is badly in need of boning dead meal in bulk or ball, with
Guarantee steel-making quality.
Prior art is for prepare adhesive with sodium silicate for raw material；Prepare firming agent with prodan, quick lime, by adhesive,
Firming agent and Metallurgical Solid Wastes mixing, load mould, send into baking oven, toast in bulk, and this technology not only production cycle is long, and
And yield poorly, production cost is expensive, and during adhesive, firming agent mix with metallurgical dead meal, stirring is uneven, produces
Block is frangible, impact steel-making quality.
Summary of the invention
It is simple that the technical problem to be solved in the present invention is to provide a kind of technique, and the dead meal pellet strength prepared is big, beneficially iron and steel smelting
The metallurgical dead meal bonding agglomerating process of refining.
Metallurgy dead meal of the present invention bonding agglomerating process, comprises the steps:
S01: prepare adhesive, selecting heatproof reach 900 DEG C of pressure to reach the aqueous silicic acid sodium of 5MPa is inorganic adhesive；
S02: the fines after metallurgical dead meal screening is transported to drying oven, and drying oven carries out drying and processing to dead meal, gives up the most at last
The moisture Control of rejected material is at 2-3%；
S03: by percentage to the quality, the dead meal after drying loads blender with inorganic adhesive in the ratio of 50:2-50:5,
The material added is sufficiently stirred for by blender, obtains compound；
S04: feed the mixture into forming machine, is prepared as block or sphere；
S05: send in dedicated drying stove by block or sphere, adjustment drying oven temperature, to 170-190 °, is dried 15-25 and is divided
Finished product is i.e. gone out after clock.
One metallurgy dead meal of the present invention bonding agglomerating process, wherein in S02 step, the moisture Control of dead meal is at 2.3-the most at last
2.7%.
One metallurgy dead meal of the present invention bonding agglomerating process, wherein in S03 step, by percentage to the quality, after drying
Dead meal loads blender with inorganic adhesive in the ratio of 50:3-50:4.
Metallurgical Solid Wastes is recycled by metallurgy dead meal of the present invention bonding agglomerating process, beneficially STEELMAKING PRODUCTION, and twice laid is real
Producing the most continuously, yield is high, runs and maintenance cost is low, free from environmental pollution.After product balling-up, intensity is high, intensity minimum up to
80kg/cm2, it is to avoid because of the broken secondary pollution caused during having bad luck and using.
Detailed description of the invention
Metallurgy dead meal of the present invention bonding agglomerating process, comprises the steps:
S01: prepare adhesive, selecting heatproof reach 900 DEG C of pressure to reach the aqueous silicic acid sodium of 5MPa is inorganic adhesive；Wherein water
Property sodium silicate technical specification: Baume degrees (20 DEG C) 50Be；Sodium oxide content >=12.8%；Dioxide-containing silica >=29.2%；Mould
Number (M) 2.2 2.5；Shear strength >=18MPa；
S02: the fines after metallurgical dead meal screening is transported to drying oven, and drying oven carries out drying and processing to dead meal, gives up the most at last
The moisture Control of rejected material is at 2%-3%；
S03: by percentage to the quality, the dead meal after drying loads blender with inorganic adhesive in the ratio of 50:2-50:5,
The material added is sufficiently stirred for by blender, obtains compound；
S04: feed the mixture into forming machine, is prepared as block or sphere；
S05: send in dedicated drying stove by block or sphere, adjustment drying oven temperature, to 170-190 °, is dried 15-25 and is divided
Finished product is i.e. gone out after clock.
In order to verify metallurgical dead meal bonding in bulk effect prepared by the present invention, the parameter of each step of the present invention is respectively according to following table institute
Registration is according to being prepared for four kinds of metallurgical dead meals agglomerating finished products of bonding:
Testing the intensity of above-mentioned four kinds of metal dead meals agglomerating finished product of bonding, minimum balling-up intensity is up to 80kg/cm2,
Part is up to 150-200kg/cm2, it follows that the dead meal using the present invention to prepare bonds, agglomerating reliability is high.
Metallurgical Solid Wastes is recycled by metallurgy dead meal of the present invention bonding agglomerating process, beneficially STEELMAKING PRODUCTION, and twice laid is real
Producing the most continuously, yield is high, runs and maintenance cost is low, free from environmental pollution.After product balling-up, intensity is high, intensity minimum up to
80kg/cm2, it is to avoid because of the broken secondary pollution caused during having bad luck and using.
Embodiment described above is only to be described the preferred embodiment of the present invention, not carries out the scope of the present invention
Limiting, on the premise of designing spirit without departing from the present invention, technical scheme is made by those of ordinary skill in the art
Various deformation and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (3)
1. metallurgical dead meal bonding agglomerating process, comprises the steps:
S01: prepare adhesive, selecting heatproof reach 900 DEG C of pressure to reach the aqueous silicic acid sodium of 5MPa is inorganic adhesive；
S02: the fines after metallurgical dead meal screening is transported to drying oven, and drying oven carries out drying and processing to dead meal, gives up the most at last
The moisture Control of rejected material is at 2-3%；
S03: by percentage to the quality, the dead meal after drying loads blender with inorganic adhesive in the ratio of 50:2-50:5,
The material added is sufficiently stirred for by blender, obtains compound；
S04: feed the mixture into forming machine, is prepared as block or sphere；
S05: send in dedicated drying stove by block or sphere, adjustment drying oven temperature, to 170-190 °, is dried 15-25 and is divided
Finished product is i.e. gone out after clock.
A kind of metallurgical dead meal bonding agglomerating process the most according to claim 1, it is characterised in that: in S02 step, finally
By the moisture Control of dead meal at 2.3-2.7%.
A kind of metallurgical dead meal bonding agglomerating process the most according to claim 1, it is characterised in that: in S03 step, with matter
Amount percentages, the dead meal after drying loads blender with inorganic adhesive in the ratio of 50:3-50:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549695.8A CN105925794A (en) | 2016-07-13 | 2016-07-13 | Metallurgical waste material bonding clustering process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549695.8A CN105925794A (en) | 2016-07-13 | 2016-07-13 | Metallurgical waste material bonding clustering process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105925794A true CN105925794A (en) | 2016-09-07 |
Family
ID=56827816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610549695.8A Pending CN105925794A (en) | 2016-07-13 | 2016-07-13 | Metallurgical waste material bonding clustering process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105925794A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560583A (en) * | 2009-05-16 | 2009-10-21 | 鞍钢股份有限公司 | Rotary furnace cooling agent made of metallurgical waste material product and using method thereof |
| CN102628099A (en) * | 2012-05-09 | 2012-08-08 | 长沙矿冶研究院有限责任公司 | Method for forming balls by cooling and solidifying mineral powder by using water glass as bonding agent |
-
2016
- 2016-07-13 CN CN201610549695.8A patent/CN105925794A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560583A (en) * | 2009-05-16 | 2009-10-21 | 鞍钢股份有限公司 | Rotary furnace cooling agent made of metallurgical waste material product and using method thereof |
| CN102628099A (en) * | 2012-05-09 | 2012-08-08 | 长沙矿冶研究院有限责任公司 | Method for forming balls by cooling and solidifying mineral powder by using water glass as bonding agent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |
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| RJ01 | Rejection of invention patent application after publication |