CN104177106A - Preparation method of skimming device for use in blast-furnace tapping process - Google Patents
Preparation method of skimming device for use in blast-furnace tapping process Download PDFInfo
- Publication number
- CN104177106A CN104177106A CN201410443878.2A CN201410443878A CN104177106A CN 104177106 A CN104177106 A CN 104177106A CN 201410443878 A CN201410443878 A CN 201410443878A CN 104177106 A CN104177106 A CN 104177106A
- Authority
- CN
- China
- Prior art keywords
- skimming equipment
- blast furnace
- preparation
- bonding agent
- insulation
- 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.)
- Granted
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a preparation method of a skimming device for use in a blast-furnace tapping process, and belongs to the technical field of the slag-iron separation device in the blast-furnace tapping process. The preparation method comprises the following steps: step 1, preparing a refractory aggregate; step 2, preparing a binding agent; step 3, adding the binding agent prepared in the step 2 to a stirrer used in the step 1, wherein the binding agent accounts for 6%-8% of the refractory aggregate by mass; step 4, pouring the skimming device castable prepared in the step 3 into a die and firing to obtain the skimming device. The skimming device prepared by use of the preparation method and by virtue of innovative component proportions has excellent abrasive resistance, thermal shock resistance and erosion resistance; the service life of the skimming device is about 50 days under the circumstance of no repair; as a result, the service life of the skimming device is greatly prolonged, stable and smooth conditions of a blast furnace are well guaranteed and the production cost of an iron and steel enterprise is reduced.
Description
Technical field
The present invention relates to slag iron separating device technical field in blast furnace casting process, more particularly, relate to the preparation method of the skimming equipment in a kind of blast furnace casting process.
Background technology
Blast furnace ironmaking is most widely used iron-smelting process, and through the high temperature liquid iron of blast-furnace smelting and slag mixes and flowed out by iron mouth, molten iron is being transported to converter station by hot metal ladle, torpedo tank car from blast furnace casting, carries out converter steelmaking.In order to prevent that the objectionable constituent in slag from entering molten iron again, in the process of blast furnace casting, need slag iron separating device to separate high temperature sludge iron.In prior art, the main slag iron separating device adopting is skimmer, is called again sand mouth; On skimmer, connect main trough of blast furnace, under connect iron runner, bypass connects slag runner, in the process of tapping a blast furnace, the slag in main iron hook with molten iron because of the different natural layerings of its density.Slag float over because density is little molten iron above, by skimmer block after then flow to slag runner; Molten iron is because of below its density sinks to greatly, and flows to iron runner by the gap between skimmer and main iron hook.Realization the tap a blast furnace slag of high-temperature liquid state in process, effective separation of iron.Skimmer in core node position, is the unique node that ensures that slag iron effectively separates on casting house, is the device that promotes that high-temperature liquid furnace slag in blast furnace casting process, molten iron effectively separate.
But, in skimmer process under arms, standing mechanical erosion, the chemical erosion of high temperature furnace slag and the intermittent thermal shock erosion of high temperature liquid iron.And three kinds of factor alternating actions, strengthen mutually, greatly reduce the service life of skimmer.Existing skimmer generally adopts the materials such as corundum, silicon carbide, alumina powder and pitch to make, antiscour, corrosion resistance, antistrip performance and the thermal shock resistance of skimmer are poor, make only have 1-2 month the work-ing life of skimmer, and just need feed supplement once in every 10-15 days.The frequent repairing of skimmer, usually impact is tapped a blast furnace on schedule, causes the checking underproduction, and coke ratio raises.
Work-ing life of existing skimmer is shorter, it is frequent to repair, and directly affected blast furnace and tapped a blast furnace on schedule, extended molten iron and deposited the stove time, not only increased a ton iron cost, brings heavy economical load, and brought serious potential safety hazard to iron and steel enterprise.Therefore, need the material composition that improves slag iron separating device in blast furnace casting process badly, make skimming equipment there is good antiscour, anti-scour property, thereby improve the service life of skimming equipment.
Through patent retrieval, there is relevant technical scheme open.As: a kind of blast-furnace iron runner skimmer precast lintel (CN200910143657.2, Shen Qing Publication day: 2010-12-01), its lintel forms with refractory castable is prefabricated, and come into operation after overbaking, breach is reserved on prefabricated component top, although this application case has prevented that precast lintel is in use because of the elongated problem that causes top tension crack of bottom expanded by heating, extend skimmer work-ing life, but this application case has only been improved the structure of skimmer, it does not improve the material composition of skimmer, the service life of skimmer needs further to be improved.
In addition, reclaimed sand mouth material and preparation method thereof (CN201210187866.9 for a kind of blast furnace, Shen Qing Publication day: 2013-12-11), its component and weight percent content are: its component and weight percent content are: the discarded sial material 15-20% of granularity≤0.088mm, granularity is the quartz sand 20-30% of 1-3mm, the quartz sand 10-20% of granularity≤0.088mm, the clay powder 8-15% of granularity≤0.074mm, the pitch 3-10% of granularity≤1.0mm, the coke powder 7-15% of granularity≤2.0mm, the discarded iron runner material fine powder 10-20% of granularity≤0.088mm, non-hydrate sodium metasilicate: 0.1-3%.Although this application case has reduced the production cost of skimming equipment, and make to be fully utilized containing the high alumina brick of aluminium silicon material etc. and iron runner material, it is perfect further that the material composition of skimming equipment needs, and further improve the service life of skimming equipment.
Summary of the invention
1. the technical problem that invention will solve
The object of the invention is to overcome in prior art skimming service life of equipment short, the deficiency repair, replacement frequency being large, the preparation method of the skimming equipment in a kind of blast furnace casting process is provided, skimming equipment prepared by the present invention is by creationary feed composition proportioning, not only greatly improve the work-ing life of equipment, ensure the normal production order of blast furnace, and manufactured simple and convenient.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The preparation method of the skimming equipment in a kind of blast furnace casting process of the present invention, its step is as follows:
Step 1: prepare refractory aggregate;
Step 2: prepare bonding agent;
Step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1, the 6%-8% of the quality that wherein quality of bonding agent is refractory aggregate;
Step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then fires and obtain skimming equipment.
Further, step 1: prepare refractory aggregate
(1) take corundum brick 80-90 part by mass fraction, mullite 60-80 part, zircon 14-18 part, Suzhou soil 12-15 part and coke 8-12 part, said components is joined in stirrer successively, and at stirrer for mixing 20-25min, stirrer rotating speed is 250r/min, after mixing, obtain mixture A;
(2) take the converter wind slag 5-8 part of quenching by mass fraction, Newman powder 1-2 part and copper ore 1-2 part, and said components is joined successively in the mixture A making in step (1), stirrer continues mix and blend 20min, prepares refractory aggregate.
Further, step 2: prepare bonding agent
(1) take pitch 70-80 part by mass fraction, resol 10-25 part, guar gum 5-9 part and polyurethane(s) 5-8 part, join successively in reactor, and be uniformly mixed 20min at the temperature of 55 DEG C, and be then warming up to 80 DEG C, prepare mixture B;
(2) take cellulose acetate 7-10 part by mass fraction, butyl acrylate 2-3 part and melon glue 1-2 part, join in stirrer successively, and stir 20min, mixes to obtain mixture C;
(3) mixture C making in step (2) is joined in the mixture B making in step (1), and continue to be uniformly mixed 30min, obtain bonding agent.
Further, step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1, the 6%-8% of the quality that wherein quality of bonding agent is refractory aggregate, continues mix and blend 30-40min, mixes and obtains skimming equipment pouring material.
Further, step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then toasts, wherein the method for baking is as follows:
(1) hyperthermic treatment
First, be warmed up to 150 DEG C, insulation 3h;
Its two, be warmed up to 650 DEG C, insulation 5h;
Its three, be warmed up to 1100 DEG C, insulation 14h;
Finally, be warmed up to 1500 DEG C, insulation 10h;
(2) cooling is processed
First, cool to 1200 DEG C, insulation 5h;
Its two, cool to 700 DEG C, insulation 2h;
Its three, cool to 300 DEG C, insulation 2h;
Finally, air cooling is to normal temperature, and economy-combat grinds off burr processing, prepares skimming equipment.
Further, the size composition of described corundum brick is: granularity≤0.074mm:30%, 0.074-1.0mm:50%, 1-3mm:20%; The size composition of described mullite is: granularity≤0.074mm:20%, 0.074-1.5mm:40%, 1.5-3.5mm:40%.
Further, the granularity≤0.074mm of described coke.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following unusual effect:
The preparation method of the skimming equipment in a kind of blast furnace casting process of the present invention, the pitch that its bonding agent adopts is pelletted pitch, utilize higher carbon content to improve the erosion-resisting characteristics of skimming equipment, and residual more carbon element in the space of skimming equipment pouring material, make skimming equipment finer and close, and the creationary resol of allocating in bonding agent, guar gum, polyurethane(s), cellulose acetate, butyl acrylate and melon glue, greatly improve the adhesive property of bonding agent, itself and refractory aggregate are made to skimming equipment according to specific proportioning, make the intensity enhancing of the skimming equipment of making, thermoplasticity is high, good stability,
The corundum brick of refractory aggregate of the present invention and mullite adopt different size composition, make the size composition of refractory aggregate more reasonable, and in refractory aggregate, add zircon, Suzhou soil, coke, the converter wind slag of quenching, Newman powder and copper ore, and control specific sintering parameter, the erosion that the skimming equipment that baking is made can be resisted mechanical erosion and the slag iron of high temperature liquid iron, there is good wear resistance, heat-shock resistance and resistance to fouling, thereby improve the work-ing life of skimming equipment, greatly reduce the labour intensity of stokehold, ensure preferably the stable and direct motion of conditions of blast furnace.
Embodiment
For further understanding content of the present invention, below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Skimming equipment in a kind of blast furnace casting process of the present embodiment, is made up of 8% of the quality that the quality of described bonding agent is refractory aggregate refractory aggregate and bonding agent; The each component of described refractory aggregate is by following mass parts composition: corundum brick 90kg, mullite 80kg, zircon 18kg, Suzhou soil 15kg, coke 12kg, converter wind quench slag 8kg, Newman powder 2kg and copper ore 2kg.
And describe at this, the size composition of described corundum brick is: granularity≤0.074mm:30% (mass percent), 0.074-1.0mm:50% (mass percent), 1-3mm:20% (mass percent); The size composition of described mullite is: granularity≤0.074mm:20% (mass percent), 0.074-1.5mm:40% (mass percent), 1.5-3.5mm:40% (mass percent); Granularity≤the 0.074mm of described coke.The granularity of the zircon of the present embodiment is 0.5-2.0mm, and the zircon of allocating specified proportion into has improved the thermal shock resistance of refractory aggregate, has improved work-ing life; Described Suzhou soil is the remaining type kaolin of middle low temperature hot liquid alteration, and the quality percentage composition of its composition is: Al
2o
3: 38.5%, SiO
2: 46.6%, other: 14.9%; This Suzhou soil granularity≤2.0mm.
In addition, the above-mentioned converter wind slag of quenching is converter slag to be transported to wind by slag car quench after station, liquid converter slag flows out from the tundish of slag car, the air spraying by laval nozzle again dispels, be broken into particulate state and be the converter wind slag of quenching, the quench quality percentage of composition of slag of this converter wind is: Al
2o
3: 3.26%, CaO:45.02%, MgO:12.85%, MnO:0.71%, Si
2o:14.61%, TFe:21.22%, f-CaO:0.48%, all the other are inevitable impurity.The quality percentage composition of above-mentioned Newman meal component is: TFe:62.02%, SiO
2: 5.03%, CaO:0.23%, MnO:0.15%, Al
2o
3: 0.67%, all the other are inevitable impurity, the granularity of this Newman powder is 2.0-3.5mm.Described copper ore is exploited out from copper mine, then becomes higher, the meticulous sand shape copper mine of cupric quality through ore dressing, and the granularity of copper ore is 0.5-1.5mm, the copper ore that this copper ore is black.
The each component of bonding agent of the present embodiment forms by following mass parts: pitch 80kg, resol 25kg, guar gum 9kg, polyurethane(s) 8kg, cellulose acetate 10kg, butyl acrylate 3kg and melon glue 2kg.What deserves to be explained is, described pitch is pelletted pitch, described polyurethane(s), is the general designation that contains the macromolecular cpd of repetition carbamate groups on main chain, and it is to be formed by organic diisocyanate or polyisocyanates and dihydroxyl or polyol addition polymerization.
In addition, the cellulose acetate of the present embodiment is the natural high polymer of the chemical modification obtaining after acetic acid esterified for hydroxyl in cellulosic molecule, and acetyl content is 38%.Described guar gum is high molecular weight water soluble polymer, and its chemical name is guar gum hydroxypropyl-trimethyl ammonium chloride.
Skimming equipment in a kind of blast furnace casting process of the present embodiment, its concrete preparation method is as follows:
Step 1: prepare refractory aggregate
(1) take corundum brick 90kg by mass fraction, mullite 80kg, zircon 18kg, Suzhou soil 15kg and coke 12kg, join said components in stirrer successively, and at stirrer for mixing 25min, stirrer rotating speed is 250r/min, obtains mixture A after mixing;
(2) take the converter wind slag 8kg that quenches by mass fraction, Newman powder 2kg and copper ore 2kg, and said components is joined successively in the mixture A making in step (1), stirrer continues mix and blend 20min, prepares refractory aggregate;
Step 2: prepare bonding agent
(1) take pitch 80kg by mass fraction, resol 25kg, guar gum 9kg and polyurethane(s) 8kg, join in reactor successively, and be uniformly mixed 20min at the temperature of 55 DEG C, then the first heat-up rate intensification 15min with 1 DEG C/min of reactor, insulation 10min, with the heat-up rate intensification 5min of 2 DEG C/min, be warming up to 80 DEG C again, prepare mixture B;
(2) take cellulose acetate 10kg by mass fraction, butyl acrylate 3kg and melon glue 2kg, join in stirrer successively, and stir 20min, mixes to obtain mixture C;
(3) mixture C making in step (2) is joined in the mixture B making in step (1), and continue to be uniformly mixed 30min, obtain bonding agent;
Step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1,8% of the quality that wherein quality of bonding agent is refractory aggregate, continues mix and blend 40min, mixes and obtains skimming equipment pouring material;
Step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then toasts, wherein the method for baking is as follows:
(1) hyperthermic treatment
First, be warmed up to 150 DEG C with the heat-up rate of 10 DEG C/h, insulation 3h;
Its two, be warmed up to 650 DEG C with the heat-up rate of 25 DEG C/h, insulation 5h;
Its three, be warmed up to 1100 DEG C with the heat-up rate of 35 DEG C/h, insulation 14h;
Finally, be warmed up to 1500 DEG C with the heat-up rate of 30 DEG C/h, insulation 10h;
(2) cooling is processed
First, cool to 1200 DEG C with the cooling rate of 25 DEG C/h, insulation 5h;
Its two, cool to 700 DEG C with the cooling rate of 40 DEG C/h, insulation 2h;
Its three, cool to 300 DEG C with the cooling rate of 20 DEG C/h, insulation 2h;
Finally, air cooling is to normal temperature, and economy-combat grinds off burr processing, prepares skimming equipment.
Skimming equipment in a kind of blast furnace casting process of the present embodiment, due to creationary zircon, Suzhou soil, converter wind quench slag, Newman powder and the copper ore allocated in refractory aggregate, high temperature resistance, thermal shock resistance and the erosion-resisting characteristics of this skimming equipment are strengthened, the corundum brick of this refractory aggregate and mullite adopt different size composition, make the size composition of refractory aggregate more reasonable; The pitch that the bonding agent of the present embodiment adopts is pelletted pitch, utilize higher carbon content to improve the erosion-resisting characteristics of skimming equipment, and residual more carbon element in the space of skimming equipment pouring material, make skimming equipment finer and close, and creationary resol, guar gum, polyurethane(s), cellulose acetate, butyl acrylate and the melon glue allocated in bonding agent, has improved the adhesive property of bonding agent greatly.
Skimming equipment in a kind of blast furnace casting process of the present invention, refractory aggregate and bonding agent are by creationary component proportion, the perfect pouring material of skimming equipment, then make skimming equipment by specific sintering method, this skimming equipment has good wear resistance, heat-shock resistance and resistance to fouling.Greatly improve the service life of blast furnace skimming equipment, skimming equipment reaches 48 days work-ing life in the situation that not repairing, and in use do not need feed supplement, easy for installation, not only greatly reduce the labour intensity of stokehold, and for blast furnace taps a blast furnace and provides safeguard on schedule, ensure the stable and direct motion of conditions of blast furnace.
Embodiment 2
The substance of the present embodiment is with embodiment 1, and its difference is: 7.5% of the quality that the quality of the bonding agent of the present embodiment is refractory aggregate; The each component of described refractory aggregate is by following mass parts composition: corundum brick 85kg, mullite 75kg, zircon 16kg, Suzhou soil 14kg, coke 10kg, converter wind quench slag 6kg, Newman powder 1kg and copper ore 1kg.The each component of bonding agent of the present embodiment forms by following mass parts: pitch 75kg, resol 20kg, guar gum 8kg, polyurethane(s) 6kg, cellulose acetate 8kg, butyl acrylate 2kg and melon glue 1kg.
Skimming equipment in a kind of blast furnace casting process of the present embodiment, its concrete preparation method is as follows:
Step 1: prepare refractory aggregate
(1) take corundum brick 85kg by mass fraction, mullite 75kg, zircon 16kg, Suzhou soil 14kg and coke 10kg, join said components in stirrer successively, and at stirrer for mixing 22min, stirrer rotating speed is 250r/min, obtains mixture A after mixing;
(2) take the converter wind slag 6kg that quenches by mass fraction, Newman powder 1kg and copper ore 1kg, and said components is joined successively in the mixture A making in step (1), stirrer continues mix and blend 20min, prepares refractory aggregate;
Step 2: prepare bonding agent
(1) take pitch 75kg by mass fraction, resol 20kg, guar gum 8kg and polyurethane(s) 6kg, join in reactor successively, and be uniformly mixed 20min at the temperature of 55 DEG C, then the first heat-up rate intensification 15min with 1 DEG C/min of reactor, insulation 10min, with the heat-up rate intensification 5min of 2 DEG C/min, be warming up to 80 DEG C again, prepare mixture B;
(2) take cellulose acetate 8kg by mass fraction, butyl acrylate 2kg and melon glue 1kg, join in stirrer successively, and stir 20min, mixes to obtain mixture C;
(3) mixture C making in step (2) is joined in the mixture B making in step (1), and continue to be uniformly mixed 30min, obtain bonding agent;
Step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1,7.5% of the quality that wherein quality of bonding agent is refractory aggregate, continues mix and blend 35min, mixes and obtains skimming equipment pouring material;
Step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then toasts, wherein the method for baking is as follows:
(1) hyperthermic treatment
First, be warmed up to 150 DEG C with the heat-up rate of 10 DEG C/h, insulation 3h;
Its two, be warmed up to 650 DEG C with the heat-up rate of 25 DEG C/h, insulation 5h;
Its three, be warmed up to 1100 DEG C with the heat-up rate of 35 DEG C/h, insulation 14h;
Finally, be warmed up to 1500 DEG C with the heat-up rate of 30 DEG C/h, insulation 10h;
(2) cooling is processed
First, cool to 1200 DEG C with the cooling rate of 25 DEG C/h, insulation 5h;
Its two, cool to 700 DEG C with the cooling rate of 40 DEG C/h, insulation 2h;
Its three, cool to 300 DEG C with the cooling rate of 20 DEG C/h, insulation 2h;
Finally, air cooling is to normal temperature, and economy-combat grinds off burr processing, prepares skimming equipment.
Skimming equipment in a kind of blast furnace casting process of the present invention, refractory aggregate and bonding agent are by creationary component proportion, the perfect pouring material of skimming equipment, then make skimming equipment by specific sintering method, this skimming equipment has good wear resistance, heat-shock resistance and resistance to fouling.Greatly improve the service life of blast furnace skimming equipment, skimming equipment reaches 51 days work-ing life in the situation that not repairing, and in use do not need feed supplement, easy for installation, not only greatly reduce the labour intensity of stokehold, and for blast furnace taps a blast furnace and provides safeguard on schedule, ensure the stable and direct motion of conditions of blast furnace.
Embodiment 3
The substance of the present embodiment is with embodiment 1, and its difference is: 6% of the quality that the quality of the bonding agent of the present embodiment is refractory aggregate; The each component of described refractory aggregate is by following mass parts composition: corundum brick 80kg, mullite 60kg, zircon 14kg, 12 parts, Suzhou soil, coke 8kg, the converter wind slag 5kg that quenches, Newman powder 1kg and copper ore 1kg; The each component of bonding agent of the present embodiment forms by following mass parts: pitch 70kg, resol 10kg, guar gum 5kg, polyurethane(s) 5kg, cellulose acetate 7kg, butyl acrylate 2kg and melon glue 1kg.
Skimming equipment in a kind of blast furnace casting process of the present embodiment, its concrete preparation method is as follows:
Step 1: prepare refractory aggregate
(1) take corundum brick 80kg by mass fraction, mullite 60kg, zircon 14kg, Suzhou soil 12kg and coke 8kg, join said components in stirrer successively, and at stirrer for mixing 20min, stirrer rotating speed is 250r/min, obtains mixture A after mixing;
(2) take the converter wind slag 5kg that quenches by mass fraction, Newman powder 1kg and copper ore 1kg, and said components is joined successively in the mixture A making in step (1), stirrer continues mix and blend 20min, prepares refractory aggregate;
Step 2: prepare bonding agent
(1) take pitch 70kg by mass fraction, resol 10kg, guar gum 5kg and polyurethane(s) 5kg, join in reactor successively, and be uniformly mixed 20min at the temperature of 55 DEG C, then the first heat-up rate intensification 15min with 1 DEG C/min of reactor, insulation 10min, with the heat-up rate intensification 5min of 2 DEG C/min, be warming up to 80 DEG C again, prepare mixture B;
(2) take cellulose acetate 7kg by mass fraction, butyl acrylate 2kg and melon glue 1kg, join in stirrer successively, and stir 20min, mixes to obtain mixture C;
(3) mixture C making in step (2) is joined in the mixture B making in step (1), and continue to be uniformly mixed 30min, obtain bonding agent;
Step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1,6% of the quality that wherein quality of bonding agent is refractory aggregate, continues mix and blend 30min, mixes and obtains skimming equipment pouring material;
Step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then toasts, wherein the method for baking is as follows:
(1) hyperthermic treatment
First, be warmed up to 150 DEG C with the heat-up rate of 10 DEG C/h, insulation 3h;
Its two, be warmed up to 650 DEG C with the heat-up rate of 25 DEG C/h, insulation 5h;
Its three, be warmed up to 1100 DEG C with the heat-up rate of 35 DEG C/h, insulation 14h;
Finally, be warmed up to 1500 DEG C with the heat-up rate of 30 DEG C/h, insulation 10h;
(2) cooling is processed
First, cool to 1200 DEG C with the cooling rate of 25 DEG C/h, insulation 5h;
Its two, cool to 700 DEG C with the cooling rate of 40 DEG C/h, insulation 2h;
Its three, cool to 300 DEG C with the cooling rate of 20 DEG C/h, insulation 2h;
Finally, air cooling is to normal temperature, and economy-combat grinds off burr processing, prepares skimming equipment.
Skimming equipment in a kind of blast furnace casting process of the present invention, refractory aggregate and bonding agent are by creationary component proportion, the perfect pouring material of skimming equipment, then make skimming equipment by specific sintering method, this skimming equipment has good wear resistance, heat-shock resistance and resistance to fouling.Greatly improve the service life of blast furnace skimming equipment, skimming equipment reaches 47 days work-ing life in the situation that not repairing, and in use do not need feed supplement, easy for installation, not only greatly reduce the labour intensity of stokehold, and for blast furnace taps a blast furnace and provides safeguard on schedule, ensure the stable and direct motion of conditions of blast furnace.
Claims (7)
1. a preparation method for the skimming equipment in blast furnace casting process, is characterized in that: its step is as follows:
Step 1: prepare refractory aggregate;
Step 2: prepare bonding agent;
Step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1, the 6%-8% of the quality that wherein quality of bonding agent is refractory aggregate;
Step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then fires and obtain skimming equipment.
2. the preparation method of the skimming equipment in a kind of blast furnace casting process according to claim 1, is characterized in that: step 1: prepare refractory aggregate
(1) take corundum brick 80-90 part by mass fraction, mullite 60-80 part, zircon 14-18 part, Suzhou soil 12-15 part and coke 8-12 part, said components is joined in stirrer successively, and at stirrer for mixing 20-25min, stirrer rotating speed is 250r/min, after mixing, obtain mixture A;
(2) take the converter wind slag 5-8 part of quenching by mass fraction, Newman powder 1-2 part and copper ore 1-2 part, and said components is joined successively in the mixture A making in step (1), stirrer continues mix and blend 20min, prepares refractory aggregate.
3. the preparation method of the skimming equipment in a kind of blast furnace casting process according to claim 2, is characterized in that: step 2: prepare bonding agent
(1) take pitch 70-80 part by mass fraction, resol 10-25 part, guar gum 5-9 part and polyurethane(s) 5-8 part, join successively in reactor, and be uniformly mixed 20min at the temperature of 55 DEG C, and be then warming up to 80 DEG C, prepare mixture B;
(2) take cellulose acetate 7-10 part by mass fraction, butyl acrylate 2-3 part and melon glue 1-2 part, join in stirrer successively, and stir 20min, mixes to obtain mixture C;
(3) mixture C making in step (2) is joined in the mixture B making in step (1), and continue to be uniformly mixed 30min, obtain bonding agent.
4. the preparation method of the skimming equipment in a kind of blast furnace casting process according to claim 3, it is characterized in that: step 3: the bonding agent that step 2 is prepared joins in the stirrer in step 1, the 6%-8% of the quality that wherein quality of bonding agent is refractory aggregate, continue mix and blend 30-40min, mix and obtain skimming equipment pouring material.
5. the preparation method of the skimming equipment in a kind of blast furnace casting process according to claim 4, is characterized in that: step 4: the skimming equipment pouring material that step 3 is made is poured in mould, then toasts, and wherein the method for baking is as follows:
(1) hyperthermic treatment
First, be warmed up to 150 DEG C, insulation 3h;
Its two, be warmed up to 650 DEG C, insulation 5h;
Its three, be warmed up to 1100 DEG C, insulation 14h;
Finally, be warmed up to 1500 DEG C, insulation 10h;
(2) cooling is processed
First, cool to 1200 DEG C, insulation 5h;
Its two, cool to 700 DEG C, insulation 2h;
Its three, cool to 300 DEG C, insulation 2h;
Finally, air cooling is to normal temperature, and economy-combat grinds off burr processing, prepares skimming equipment.
6. the preparation method of the skimming equipment in a kind of blast furnace casting process according to claim 4, is characterized in that: the size composition of described corundum brick is: granularity≤0.074mm:30%, 0.074-1.0mm:50%, 1-3mm:20%; The size composition of described mullite is: granularity≤0.074mm:20%, 0.074-1.5mm:40%, 1.5-3.5mm:40%.
7. the preparation method of the skimming equipment in a kind of blast furnace casting process according to claim 4, is characterized in that: the granularity≤0.074mm of described coke.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610127802.8A CN105777155B (en) | 2014-09-02 | 2014-09-02 | A kind of preparation method of skimming equipment refractory aggregate |
| CN201610127763.1A CN105777086B (en) | 2014-09-02 | 2014-09-02 | A kind of preparation method of skimming equipment pouring material |
| CN201410443878.2A CN104177106B (en) | 2014-09-02 | 2014-09-02 | The preparation method of the skimming equipment in a kind of blast furnace casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410443878.2A CN104177106B (en) | 2014-09-02 | 2014-09-02 | The preparation method of the skimming equipment in a kind of blast furnace casting process |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610127763.1A Division CN105777086B (en) | 2014-09-02 | 2014-09-02 | A kind of preparation method of skimming equipment pouring material |
| CN201610127802.8A Division CN105777155B (en) | 2014-09-02 | 2014-09-02 | A kind of preparation method of skimming equipment refractory aggregate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104177106A true CN104177106A (en) | 2014-12-03 |
| CN104177106B CN104177106B (en) | 2016-03-09 |
Family
ID=51958491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410443878.2A Expired - Fee Related CN104177106B (en) | 2014-09-02 | 2014-09-02 | The preparation method of the skimming equipment in a kind of blast furnace casting process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104177106B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417263A (en) * | 2017-07-23 | 2017-12-01 | 启东久精耐火材料有限公司 | A kind of aluminium melting furnace permeates corundum brick and preparation method thereof with aluminum-resistant |
| CN111606721A (en) * | 2020-06-01 | 2020-09-01 | 海城市方宏耐火材料有限公司 | Environment-friendly bonding agent for refractory material and preparation method thereof |
| CN113683401A (en) * | 2020-05-19 | 2021-11-23 | 中冶宝钢技术服务有限公司 | Manufacturing process of main channel iron slag separator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497930A (en) * | 2008-12-05 | 2009-08-05 | 北京联合荣大工程材料有限责任公司 | Single taphole blast furnace tapping channel iron storing type improving technology |
| CN102717060A (en) * | 2012-07-13 | 2012-10-10 | 黄石新兴管业有限公司 | Pig-casting machine skimming casting process method |
| CN104045356A (en) * | 2014-05-26 | 2014-09-17 | 芜湖水泵制造有限公司 | preparation method of skimming tool for blast-furnace casting |
-
2014
- 2014-09-02 CN CN201410443878.2A patent/CN104177106B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497930A (en) * | 2008-12-05 | 2009-08-05 | 北京联合荣大工程材料有限责任公司 | Single taphole blast furnace tapping channel iron storing type improving technology |
| CN102717060A (en) * | 2012-07-13 | 2012-10-10 | 黄石新兴管业有限公司 | Pig-casting machine skimming casting process method |
| CN104045356A (en) * | 2014-05-26 | 2014-09-17 | 芜湖水泵制造有限公司 | preparation method of skimming tool for blast-furnace casting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417263A (en) * | 2017-07-23 | 2017-12-01 | 启东久精耐火材料有限公司 | A kind of aluminium melting furnace permeates corundum brick and preparation method thereof with aluminum-resistant |
| CN113683401A (en) * | 2020-05-19 | 2021-11-23 | 中冶宝钢技术服务有限公司 | Manufacturing process of main channel iron slag separator |
| CN111606721A (en) * | 2020-06-01 | 2020-09-01 | 海城市方宏耐火材料有限公司 | Environment-friendly bonding agent for refractory material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104177106B (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101337821B (en) | Low density fire resistant pouring material for KR stirring paddle | |
| CN101898897A (en) | Quick-drying self-flow iron runner castable material and application method thereof | |
| CN102531653A (en) | Hot-state repair material made from waste magnesia-carbon brick and used for converter and preparation method thereof | |
| CN104177106B (en) | The preparation method of the skimming equipment in a kind of blast furnace casting process | |
| CN104291844B (en) | A kind of preparation method of blast furnace iron mouth mud cover of longevity | |
| CN102584282A (en) | Thermal-state mending material taking forsterite as raw material for converters and preparation method thereof | |
| CN103449828A (en) | Repairing mass based on used magnesia carbon refractory and preparation method of repairing mass | |
| CN104529495A (en) | Skimming tool and production process | |
| CN103387402A (en) | Iron runner casting material for blast furnace for smelting vanadium titanium ore and preparation method thereof | |
| CN104211416B (en) | Skimming equipment in a kind of blast furnace casting process | |
| CN106995866A (en) | A kind of low-cost high-efficiency converter fettling technique | |
| CN103755360B (en) | Guide rod pouring material of slag blocking plug used for converter tapping slag blocking | |
| CN105777086B (en) | A kind of preparation method of skimming equipment pouring material | |
| CN104045356A (en) | preparation method of skimming tool for blast-furnace casting | |
| CN103936445B (en) | Large fabric for fettling of converter | |
| CN105777155B (en) | A kind of preparation method of skimming equipment refractory aggregate | |
| CN103951443B (en) | A kind of converter fettling preparation method of large fabric | |
| CN103740884A (en) | Slag blocking plug capable of high-efficiently blocking slag | |
| CN103740885A (en) | Preparation method of slag blocking plug | |
| CN104060011B (en) | Blast furnace casting sand mouth of a kind of longevity and preparation method thereof | |
| CN104150919B (en) | A kind of blast furnace casting of longevity sand mouth refractory aggregate | |
| CN110171960A (en) | A kind of blast furnace easily drilling environment-friendly type energy-saving anhydrous stemming and preparation method thereof | |
| CN104311046B (en) | A kind of blast furnace iron mouth mud cover of longevity | |
| CN104261842A (en) | Preparation method of long-service-life sand jet for blast furnace tapping | |
| CN104211419B (en) | A kind of preparation method of blast furnace skimming equipment bonding agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Liqiu Inventor before: Wu Xuejian Inventor before: Jian Qiusheng Inventor before: Jiang Feng Inventor before: Zhang Qiankun Inventor before: Yu Shucai |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170906 Address after: 067000 Chengde City, Hebei province Shuangluan District Palace Road No. 18 building 204 room Patentee after: Zhang Liqiu Address before: Anhui province Ma'anshan City Road 243000 at Cihu hi tech Industrial Development Zone No. 42 Patentee before: Wu Xuejian |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20170902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |