CN1018933B - Cold consolidation agglomeration process for bulk powder - Google Patents
Cold consolidation agglomeration process for bulk powderInfo
- Publication number
- CN1018933B CN1018933B CN 91103496 CN91103496A CN1018933B CN 1018933 B CN1018933 B CN 1018933B CN 91103496 CN91103496 CN 91103496 CN 91103496 A CN91103496 A CN 91103496A CN 1018933 B CN1018933 B CN 1018933B
- Authority
- CN
- China
- Prior art keywords
- powder
- water glass
- binding agent
- ball
- iron
- 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.)
- Expired
Links
- 239000000843 powder Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 12
- 238000005054 agglomeration Methods 0.000 title claims abstract description 9
- 230000002776 aggregation Effects 0.000 title claims abstract description 9
- 238000007596 consolidation process Methods 0.000 title abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000008188 pellet Substances 0.000 abstract description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 239000011572 manganese Substances 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000004115 Sodium Silicate Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000010924 continuous production Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 1
- 238000005453 pelletization Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- XEEYBQQBJWHFJM-RNFDNDRNSA-N iron-60 Chemical compound [60Fe] XEEYBQQBJWHFJM-RNFDNDRNSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Glass Compositions (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The main technical characteristic of the cold consolidation agglomeration process of the bulk powder is to develop a novel liquid binder. The adhesive is water glass (sodium silicate) or modified by adding a certain amount of additives into the water glass. The process of the invention does not use high-temperature and high-pressure equipment, has simple flow and can realize continuous production operation. The pellet produced by the process has high strength and low-temperature reduction degradation rate. Has good heat resistance and water-proof and moisture-proof performances. The invention can be used for agglomeration of manganese ore powder, chromium ore powder, silicon ore powder, iron concentrate powder, iron-containing dust material in gold freezing factory and other bulk powder.
Description
The cold fixed agglomeration process of the diffusing shape powder of the present invention belongs to the preconditioning technique field of metallurgical raw material.
At present, the fixed agglomeration process of domestic external cooling is divided into three types basically: hydraulic bond, hydrothermal method and carbonating concretion method.The cold consolidation technique of Japan Nippon Steel and the NKK-CORAC technology of NKK belong to hydraulic bond and carbonating concretion method.The MTU-pelle Tech technology of the U.S. belongs to hydrothermal method.There is following shortcoming in existing cold-consolidation pellet process: (1) makes the ball mode is traditional balling disc technology, and raw material is had stronger selectivity, requires raw material granularity≤44 μ m will account for 60～90%, specific surface area 1000～4000cm
2/ g.Immersion property and balling-up will be got well.(2) set time long, as needing maintenance several days as binding agent, therefore need take very big place with cement.(3) almost do less than continuity production.
In order to overcome the shortcoming of existing technology, the present invention designs a kind of high-temperature high-pressure apparatus that do not need, and does not need maintenance, and technical process is simple, can realize the processing method of the serialization operation of producing.
Major technique feature of the present invention is to have developed a kind of novel liquid-containing binder.This binding agent is to add the certain quantity of additive modification in water glass (water glass) or the water glass.Technology of the present invention may further comprise the steps: (1) adds in the whipping appts of water glass of packing into till 0.5～2% additive (vinyl acetic monomer) is stirred to additive and dissolves in water glass, prepares binding agent.(2) with the smart powder of the iron of granularity≤1mm (account for pan feeding 87～95%), the coke powder of granularity≤1mm (0～5%) and binding agent (5～8%) mixer of packing into, batch mixing 6 minutes.(3) use pair roller ball press pressure ball behind the batch mixing.(4) the ball material that suppresses even cloth after sieving enters stoving oven on oven dry guipure machine; Use useless flue gas and do thermal medium, flue-gas temperature is dried and was made the finished ball nodulizing in 30 minutes at 300～350 ℃.
The cold fixed agglomeration process of the diffusing shape powder of the present invention is without high-temperature high-pressure apparatus, and flow process is simple, can realize the serialization operation of producing.Have save energy, reduce environmental pollution, advantage such as initial cost is low.With the pellet strength height of this explained hereafter, low temperature reduction degradation index is low, has good thermotolerance and water-fast humidity resistance.The present invention can be used for the agglomeration of manganese ore powder, chromite ore fine, ferrosilicon powder, the smart powder of iron, Metallurgical Factory's iron content dirt material and other diffusing shape powder.
Fig. 1 is a process flow sheet of the present invention.
Embodiment: with water glass (modulus 3.0; Degree Beaume 41 degree) allocate 1% additive vinyl acetic monomer in, in whipping appts, stir and make binding agent.The pan feeding composition: the smart powder degree of iron accounts for 62.5% less than 200 order grades, contains full iron 60%; Coke fines size contains fixed carbon 77.81% less than 1mm; The smart powder 90% of iron, coke powder 4%, binding agent 6%.Above three kinds of raw materials in this ratio weighing after on muller batch mixing, mixing time 6 minutes.Compound pair roller ball press pressure ball.The work in-process pelletizing that extrudes is through after sieving, and evenly cloth is on oven dry guipure machine.Enter stoving oven subsequently and finish the drying course of pelletizing.The flue gas that stoving oven adopts the burning blast furnace gas to produce is controlled in 300～350 ℃ of scopes by making flue-gas temperature after the air distribution temperature adjustment; Flue gas after the temperature adjustment enters the stoving oven bottom and passes the bed of material, is discharged by stoving oven the other end top, and bed of material pelletizing temperature is reached about 250 ℃.It is of a size of the oval ball of 18 * 28 * 34mm(the finished ball nodulizing that makes); Ultimate compression strength 284.2kg/; JIS reduction degree 69.52%, the pelletizing reduction does not have expansion; Low temperature reduction degradation index 3.36%(≤0.5mm); Barrate strength (Lu Bin ,≤5mm) 86.43%.
Claims (1)
1, the cold fixed agglomeration process of diffusing shape powder is characterized in that:, may further comprise the steps as binding agent with modified water glass:
(1) in the whipping appts of water glass of packing into, adds till 0.5～2% additive (vinyl acetic monomer) is stirred to additive and dissolves in water glass, prepare binding agent;
(2) with the smart powder of the iron of granularity≤1mm (account for pan feeding 87～95%), the coke powder 0～5% of granularity≤1mm) and binding agent (5～8%) mixer of packing into, batch mixing 6 minutes;
(3) use pair roller ball press pressure ball behind the batch mixing;
(4) the ball material screen that suppresses point back evenly cloth enters stoving oven on oven dry guipure machine; Use useless flue gas and do thermal medium, flue-gas temperature is dried and was made the finished ball nodulizing in 30 minutes at 300～350 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103496 CN1018933B (en) | 1991-05-24 | 1991-05-24 | Cold consolidation agglomeration process for bulk powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103496 CN1018933B (en) | 1991-05-24 | 1991-05-24 | Cold consolidation agglomeration process for bulk powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1056532A CN1056532A (en) | 1991-11-27 |
| CN1018933B true CN1018933B (en) | 1992-11-04 |
Family
ID=4906120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91103496 Expired CN1018933B (en) | 1991-05-24 | 1991-05-24 | Cold consolidation agglomeration process for bulk powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018933B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035887C (en) * | 1993-04-05 | 1997-09-17 | 王明奎 | Method for producing high-titanium cold-bonded pellets |
| CN1055320C (en) * | 1998-04-29 | 2000-08-09 | 宝山钢铁(集团)公司 | Production method of direct reduction shaft and blast furnace cold-bonded pellet |
| CN1511966B (en) * | 2002-12-30 | 2011-06-08 | 北京有色金属研究总院 | Ore dressing process for rare earth crude ore with high iron content |
| CN103846050A (en) * | 2012-11-28 | 2014-06-11 | 沈阳铝镁设计研究院有限公司 | Fly ash raw material pellet production apparatus |
| CN105950863B (en) * | 2016-05-11 | 2018-07-17 | 江苏省冶金设计院有限公司 | Ferronickel powder forming method |
-
1991
- 1991-05-24 CN CN 91103496 patent/CN1018933B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1056532A (en) | 1991-11-27 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |