CN100582246C - Blast-furnace coke colloid composite anticatalyst and spraying device - Google Patents
Blast-furnace coke colloid composite anticatalyst and spraying device Download PDFInfo
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- CN100582246C CN100582246C CN200810100880A CN200810100880A CN100582246C CN 100582246 C CN100582246 C CN 100582246C CN 200810100880 A CN200810100880 A CN 200810100880A CN 200810100880 A CN200810100880 A CN 200810100880A CN 100582246 C CN100582246 C CN 100582246C
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- coke
- blast furnace
- compound negative
- ratio
- colloid
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Abstract
The invention relates to blast furnace coke colloid compound negative catalyst and a spraying device which belong to the blast furnace ironmaking field and are suitable for lowering the coke rate in blast furnace ironmaking. The supporting role of the coke to a stock column in a blast furnace can be increased through lowing the reactivity of the coke and increasing the strength after reaction, the permeability of the lower portion of the blast furnace is improved, and the purpose for increasing the smelting intensity, increasing the blast furnace output and lowering coke rate the is reached. The negative catalyst and a spraying device are characterized in that the colloid compound negative catalyst is composed of silica sol and bentonite, the ratio between the silica sol and the bentonite in solution is 1:1, the ratio between boric acid and magnesium chloride in solute is equal to 2:8-8:2, and the ratio between dissolvent and the solute is 9:1. The colloid compound negative catalyst is diluted to the concentration of 2%-8% with clean water under the temperature of 60DEG C-80DEG C and mixed sufficiently, a rustless steel ball valve nozzle whose pressure (1-10kg) can be adjusted is used to spray the colloid compound negative catalyst to the surface of rolling coke in a fog shape, the purpose for spraying evenly is achieved, and the spraying amount is controlled within 1%-5%, namely 10-50 kilograms catalyst are sprayed on one ton coke. The coke rate is lowered by 15-30 kilograms for iron each ton, the blast furnace utilization coefficient is increased by 0.15-0.3t/m3.d, and the invention is suitable for the coke with different specifications and quality.
Description
Technical field
The invention belongs to the blast furnace ironmaking field, be applicable to that blast furnace ironmaking reduces coke ratio, by reactivity and the reacted intensity of raising that reduces coke, thereby improve coke supporting role to stock column in blast furnace, improve the ventilation property of bottom house, reach the raising combustion intensity, improve the purpose of furnace processor and reduction coke ratio.
Background technology
Reduce blast furnace coke ratio the optimization coke making and coal blending is arranged, improve multiple technologies such as coke quality, with will the say so Passivation Treatment of coke of the immediate technology of patent of the present invention, such as: associate professor Zhu Zizong of University Of Chongqing improve Anyang coke thermal characteristics type approval test research, the blast furnace ironmaking of Zhengzhou shipping agency of the State Scientific and Technological Commission is with coke deactivator and using method.The common feature of this class patent of invention is all to have adopted boric acid as passivator, owing to be that the aqueous solution does not form resistant to elevated temperatures colloid, cause effect instability and limitation, and costs an arm and a leg, and iron and steel enterprise uses and is restricted.
Summary of the invention
The object of the invention adopts compound negative contact agent, dilutes to be colloidal solution, is sprayed onto the surface of coke under rolling condition before the blast furnace, forms the film of skim high temperature resistant (＞1400 ℃), effectively hinder coke in blast furnace in the decline process with CO
2Vaporization reaction, i.e. C+CO
2→ 2CO, thus the high temperature resistant reaction of coke reduced, improve the hot strength of coke, strengthen the support frame effect of coke to stock column, improve the ventilation property of bottom house, improve smelting strength of blast furnace and reduce coke ratio.
The compound negative contact agent of this blast-furnace coke colloid, the compound negative contact agent solvent of colloid is made up of silicon sol and wilkinite, solute is made up of boric acid and magnesium chloride, silicon sol and bentonitic ratio are 1: 1 in the solvent, ratio=2 of solute mesoboric acid and magnesium chloride: 8～8: 2, solvent and solute ratio are 9: 1.
The compounding process of colloidal solution: the compound negative contact agent of spissated colloid is diluted to 2%～10% concentration with 60～80 ℃ cleaning water, fully mixing (employing stirrer).Use the Stainless Steel Ball Valve shower nozzle of adjustable pressure (1-10kg) to be the vaporific rolling coke surface that is sprayed onto again, reach the purpose of even sprinkling, the sprinkling amount is controlled at 1%～5%, and promptly one ton of coke sprays 10～50 kilograms.
The compound negative contact agent flusher of blast-furnace coke colloid enters the mouth 1 by water and compound negative contact agent, vertical gear motor 2, and agitator 3, ash removing hole 4, valve 5, force (forcing) pump 6, stainless steel atomizer 7, colloidal solution batch tank 8 sprays jar 9,10 compositions.At first compound negative contact agent and water are added by the inlet 1 of batch tank 8 in proportion, adding feeds steam simultaneously makes the temperature of colloidal solution reach 60～80 ℃, driving 3 pairs of colloidal solution of agitator by vertical type motor 2 stirs, make colloidal solution reach uniform degree, then the colloidal solution that configures being injected the colloidal solution that sprays jar 9 and open in 6 pairs of jars of force (forcing) pump by valve 5 pressurizes, pressure in jar can be controlled in 1～10kg, open shower nozzle 7, make colloidal solution be sprayed onto the coke surface that the outlet chute rolls under the coke bin equably with atomizing state, the quantity of spraying jar equates with coke bin, two or several sprinklings jar are worked by turns simultaneously, reach coke before going into blast furnace by the purpose of compound negative contact agent colloidal solution Passivation Treatment.
Advantage or positively effect
Adopt the advantage of the compound negative contact agent of this colloid to be:
The first, spray effect is good, and resistant to elevated temperatures colloid can keep effect under hot conditions;
The second, be applicable to the coke of different size and quality.As make Jiao firm by ramming, the coke of burnt or other the different coal blendings of anthracite;
Three, price is lower, and ton iron increases by 3.5～17.5 yuan of costs.
Adopt the compound negative contact agent of this colloid, reduce by 15～30 kilograms of/ton iron of coke ratio, the capacity factor of a blast furnace improves 0.15～0.3t/m
3D (promptly one cubic metre of blast furnace useful volume diel increases by 0.15～0.3 ton of output).
Description of drawings
Fig. 1 is compound negative contact agent colloidal solution configuration and atomizing and spraying apparatus synoptic diagram,
Main parts size is among Fig. 1: water and compound negative contact agent inlet 1, and vertical gear motor 2, agitator 3, ash removing hole 4, valve 5, force (forcing) pump 6, stainless steel atomizer 7, colloidal solution batch tank 8 sprays jar 9,10.
Embodiment
Adopt the compound negative contact agent of colloid of the present invention, coke to certain Iron And Steel Company sprays processing, the concentration of control colloidal solution is 4%, the sprinkling amount is 1.8%～2%, be 18～20 kilograms of coke spray paste liquid solutions per ton, be converted into the compound negative contact agent of 0.8～1.0 kilogram of coke consumption per ton.Make the reactivity (CRI) of coke be reduced to 18% by 24.2% in the laboratory, reacted intensity (CSR) brings up to 71.1% by 60.6%, is used for industrial effect, and ratio of putting coke into furnace iron per ton reduces by 25 kilograms, injecting coal quantity iron per ton increases by 29 kilograms, and the capacity factor of a blast furnace has improved 0.16 ton/m
3D, i.e. every 0.16 ton of pig iron of fecund round the clock of every cubic metre of blast furnace useful volume, 72 tons of iron of blast furnace fecund every day of 450 cubic metres.
Embodiment 2
With the compound negative contact agent of colloid of the present invention, the Hua Xin that is used for Tianjin Iron And Steel Company, three coal gas, the four kinds of coke in Gu County and Gengyang, spray concentration is 5% compound negative contact agent colloidal solution 0.18%～2%, the reactivity of four kinds of coke (CRI) has reduced by 1.4～2.7 percentage points, and reacted intensity (CSR) has improved 0.4～5.2 percentage point.
Prove absolutely by above example, adopt the compound negative contact agent of colloid of the present invention to handle blast-furnace coke, can obviously reduce the high-temperature reactivity (CRI) of coke in the laboratory and improve reacted intensity (CSR), be applied to blast furnace ironmaking production, can obviously reduce coke ratio and improve the capacity factor of a blast furnace, be a strong behave that realizes that energy Conservation of Blast Furnace reduces discharging.
Claims (1)
1. compound negative contact agent of blast-furnace coke colloid, it is characterized in that the compound negative contact agent solvent of colloid is made up of silicon sol and wilkinite, solute is made up of boric acid and magnesium chloride, silicon sol and bentonitic ratio are 1: 1 in the solvent, ratio=2 of solute mesoboric acid and magnesium chloride: 8～8: 2, solvent and solute ratio are 9: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810100880A CN100582246C (en) | 2008-02-25 | 2008-02-25 | Blast-furnace coke colloid composite anticatalyst and spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810100880A CN100582246C (en) | 2008-02-25 | 2008-02-25 | Blast-furnace coke colloid composite anticatalyst and spraying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235425A CN101235425A (en) | 2008-08-06 |
| CN100582246C true CN100582246C (en) | 2010-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810100880A Expired - Fee Related CN100582246C (en) | 2008-02-25 | 2008-02-25 | Blast-furnace coke colloid composite anticatalyst and spraying device |
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| CN (1) | CN100582246C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297606B (en) * | 2011-07-21 | 2013-11-06 | 宋群 | Coke-saving precast optimization control system for coke put into furnace |
| CN104449942B (en) * | 2014-11-04 | 2017-07-21 | 广州市中跃通讯设备有限公司 | A kind of technique that coke fuel factor is improved in steelmaking process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU806745A1 (en) * | 1977-07-06 | 1981-02-23 | Ленинградский Государственныйнаучно-Исследовательский И Проектныйинститут Основной Химическойпромышленности | Composition for inhibiting carbon reducing agent |
-
2008
- 2008-02-25 CN CN200810100880A patent/CN100582246C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU806745A1 (en) * | 1977-07-06 | 1981-02-23 | Ленинградский Государственныйнаучно-Исследовательский И Проектныйинститут Основной Химическойпромышленности | Composition for inhibiting carbon reducing agent |
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| CN101235425A (en) | 2008-08-06 |
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Granted publication date: 20100120 Termination date: 20140225 |