CN102515809A - Method for producing carbon-free brick for high-strength dense steel ladle - Google Patents
Method for producing carbon-free brick for high-strength dense steel ladle Download PDFInfo
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- CN102515809A CN102515809A CN201110456915XA CN201110456915A CN102515809A CN 102515809 A CN102515809 A CN 102515809A CN 201110456915X A CN201110456915X A CN 201110456915XA CN 201110456915 A CN201110456915 A CN 201110456915A CN 102515809 A CN102515809 A CN 102515809A
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Abstract
The invention relates to a method for producing a carbon-free brick for a high-strength dense steel ladle. The carbon-free brick is prepared from the following raw materials by weight part: 20 to 30 parts of aggregate part, 10 to 15 parts of fine powder part, 6 to 10 parts of composite binding agent I, 4 to parts of composite binding agent II and 0.4 to 0.6 part of composite additive. The method comprises the following steps: throwing the aggregate part into a high-speed mixing mill according to the weight ratio; mixing for the first time for 2 to 6 minutes; adding the composite binding agent II; mixing for the second time for 2 to 6 minutes; adding the composite binding agent I, the composite additive and the fine powder part; mixing for the third time for 5 to 15 minutes; performing mechanical pressing; drying; sorting; inspecting; and packaging and putting into a storage, so that the novel carbon-free brick for a steel ladle working liner with long life and denser tissue structure and higher volume density when used at high temperature is produced. The carbon-free brick produced by the method increases the volume density, greatly reduces the porosity and effectively improves molten steel erosion resistance to prolong the service life finally.
Description
Technical field
The present invention relates to the anti-material of refining ladle field in the smelting iron and steel, relate in particular to a kind of method of making Additive Production high-strength compact shaped steel non-carbon residue feather edge brick of rare earth oxide.
Background technology
The refining ladle working lining is with no carbon brick; Be that steel mill smelts the indispensable new functional type refractory materials of Clean Steel (like soft steel, ultra low-carbon steel etc.) at present, generally be pressed into by quality oxide alumina (like corundum), spinel material or magnesian, additive and wedding agent machine.In recent years because the pressure of production cost; Simultaneously consider that also the thermal shock resistance of corundum material is relatively poor; Usually peel off in the use, influence work-ing life, some manufacturers substitute the corundum in the aluminum oxide material with part premium high-alumina alumina; The thermal shock resistance of no carbon brick is greatly improved, and cost also reduces effectively.But simultaneously since the no carbon brick of this kind with comparing in the past, volume density reduces, anti-molten steel aggressiveness decline.Therefore how the low cost of adding alumine is not had the carbon brick hot strength and improve, the weave construction densification becomes a difficult problem.
Summary of the invention
The purpose of this invention is to provide a kind of method of making Additive Production high-strength compact shaped steel non-carbon residue feather edge brick of mixed rare-earth oxide; The no carbon brick volume density that this method is produced improves; Void content reduces greatly, and opposing molten steel erosion performance effectively improves, and be improved final work-ing life.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is premium high-alumina alumina and sub-white corundum 20-30 part of 5-3mm, and the part by weight of said premium high-alumina alumina and sub-white corundum is (50-100): (50-0);
Granularity is plate diamond spar and sub-white corundum 20-30 part of 3-1mm, and the part by weight of said plate diamond spar and sub-white corundum is (0-50): (100-50);
Granularity is plate diamond spar and magnesium-rich spinel 15-25 part of 1-0.088mm, and the part by weight of said plate diamond spar and magnesium-rich spinel is (60-100): (40-0);
2) fine powder part
The plate diamond spar of≤0.088mm and magnesium-rich spinel fine powder 10-15 part, the part by weight of said plate diamond spar and magnesium-rich spinel is (60-40): (40-60);
3) admixture
Combined binder one 6-10 part, combined binder one is mixed and is processed by Alpha-alumina micro mist 25-65 weight part, fine silica powder 10-20 weight part;
Combined binder two 4-6 parts, combined binder two adds water by phosphoric acid salt 10-20 weight part, halogenide 15-35 weight part, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
Composite additive 0.4-0.6 part by mixed rare-earth oxide 40-75 weight part, lanthanum trioxide 15-30 weight part, cerium oxide 10-30 weight part, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is:
By said part by weight aggregate part (comprising premium high-alumina alumina, corundum and spinel particle) is put in the high speed mixing roll; Mixed once 2-6min; Add combined binder two; Secondary mixing 2-6min adds combined binder one, composite additive, fine powder part (corundum fine powder, spinel fine powder) then, three mixing 5-15min; Mechanical pressing, drying, selection, check, packing warehouse-in are promptly produced weave construction densification more when high temperature uses then, and the novel ladle working lining that volume density is higher does not have carbon brick with the high life.
When this product is built by laying bricks or stones at the scene, should be equipped with the mud of suitable expansion character.
Compared with prior art, the invention has the beneficial effects as follows:
1) the novel high life of the present invention does not have carbon brick, through reasonable introducing mixed rare-earth materials, optimization design; It is not fine and close to make novel no carbon brick effectively overcome originally when high temperature weave construction, and intensity is low, the not strong weakness of opposing molten steel erosional competency; Effective acceleration of sintering when using for 1400-1600 degree centigrade; The density of adobe is improved before adding rare earth material greatly, and intensity increases, thereby has guaranteed that its opposing molten steel erosional competency obviously improves.
2) through optimizing the optimization design that no carbon brick ingredient groups becomes: substitute corundum with 30-50% premium high-alumina alumina, corundum partly adopts thermal shock resistance plate diamond spar or sub-white corundum preferably, and spinel is selected the spinel of rich magnesium for use; Wedding agent is by micro mist and inorganics is compound processes, and especially uses mixed rare-earth oxide+lanthanum trioxide+cerium oxide as composite additive, and this novel no carbon brick is compared with common no carbon brick; The coking property of adobe effectively improves when high temperature uses, and makes the weave construction of brick fine and close more, and volume density is higher (brings up to 3.28 gram/cubic centimetres by 3.15 gram/cubic centimetres; About 4.1%); Void content reduces (dropping to 11.6%, about 31.0% by 15.2%) greatly, and opposing molten steel erosion performance effectively improves; (bringing up to about 25.9% 102 jars times by 81 jars times) is improved final work-ing life.
Embodiment
Embodiment 1
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is 25 parts of premium high-alumina alumina and the sub-white corundum of 5-3mm, and the part by weight of premium high-alumina alumina and sub-white corundum is 50: 50;
Granularity is 25 parts of plate diamond spar and the sub-white corundum of 3-1mm, and the part by weight of plate diamond spar and sub-white corundum is 50: 50;
Granularity is 20 parts of plate diamond spar and the magnesium-rich spinel of 1-0.088mm, and the part by weight of plate diamond spar and magnesium-rich spinel is 60: 40;
2) fine powder part
12 parts of the plate diamond spar of≤0.088mm and magnesium-rich spinel fine powders, the part by weight of plate diamond spar and magnesium-rich spinel are 50: 50;
3) admixture
One 8 parts of combined binders, combined binder one is mixed and is processed by Alpha-alumina micro mist 40 weight parts, fine silica powder 15 weight parts;
25 parts of combined binders, combined binder two adds water by phosphoric acid salt 15 weight parts, halogenide 25 weight parts, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
0.5 part of composite additive by mixed rare-earth oxide 60 weight parts, lanthanum trioxide 25 weight parts, cerium oxide 20 weight parts, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is:
By said part by weight aggregate part (comprising premium high-alumina alumina, corundum and spinel particle) is put in the high speed mixing roll; Mixed once 2-6min; Add combined binder two; Secondary mixing 2-6min adds combined binder one, composite additive, fine powder part (corundum fine powder, spinel fine powder) then, three mixing 5-15min; Mechanical pressing, drying, selection, check, packing warehouse-in are promptly produced weave construction densification more when high temperature uses then, and the novel ladle working lining that volume density is higher does not have carbon brick with the high life.
When this product is built by laying bricks or stones at the scene, should be equipped with the mud of suitable expansion character.
Embodiment 2
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is 20 parts of premium high-alumina alumina and the sub-white corundum of 5-3mm, and the part by weight of premium high-alumina alumina and sub-white corundum is 70: 30;
Granularity is 30 parts of plate diamond spar and the sub-white corundum of 3-1mm, and the part by weight of plate diamond spar and sub-white corundum is 30: 70;
Granularity is 15 parts of plate diamond spar and the magnesium-rich spinel of 1-0.088mm, and the part by weight of plate diamond spar and magnesium-rich spinel is 70: 30;
2) fine powder part
15 parts of the plate diamond spar of≤0.088mm and magnesium-rich spinel fine powders, the part by weight of plate diamond spar and magnesium-rich spinel are 60: 40;
3) admixture
One 6 parts of combined binders, combined binder one is mixed and is processed by Alpha-alumina micro mist 25 weight parts, fine silica powder 20 weight parts;
26 parts of combined binders, combined binder two adds water by phosphoric acid salt 10 weight parts, halogenide 35 weight parts, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
0.4 part of composite additive by mixed rare-earth oxide 40 weight parts, lanthanum trioxide 30 weight parts, cerium oxide 10 weight parts, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is with embodiment 1.
Embodiment 3
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is 30 parts of premium high-alumina alumina and the sub-white corundum of 5-3mm, and the part by weight of premium high-alumina alumina and sub-white corundum is 60: 40;
Granularity is 20 parts of plate diamond spar and the sub-white corundum of 3-1mm, and the part by weight of plate diamond spar and sub-white corundum is 20: 80;
Granularity is 25 parts of plate diamond spar and the magnesium-rich spinel of 1-0.088mm, and the part by weight of plate diamond spar and magnesium-rich spinel is 75: 25;
2) fine powder part
10 parts of the plate diamond spar of≤0.088mm and magnesium-rich spinel fine powders, the part by weight of plate diamond spar and magnesium-rich spinel are 55: 45;
3) admixture
One 10 parts of combined binders, combined binder one is mixed and is processed by Alpha-alumina micro mist 65 weight parts, fine silica powder 20 weight parts;
24 parts of combined binders, combined binder two adds water by phosphoric acid salt 20 weight parts, halogenide 15 weight parts, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
0.6 part of composite additive by mixed rare-earth oxide 75 weight parts, lanthanum trioxide 15 weight parts, cerium oxide 30 weight parts, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is with embodiment 1.
Embodiment 4
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is that premium high-alumina alumina and the sub-white corundum 25 of 5-3mm is 75: 25 by the part by weight of premium high-alumina alumina and sub-white corundum;
Granularity is 30 parts of plate diamond spar and the sub-white corundum of 3-1mm, and the part by weight of plate diamond spar and sub-white corundum is 25: 75;
Granularity is 24 parts of plate diamond spar and the magnesium-rich spinel of 1-0.088mm, and the part by weight of plate diamond spar and magnesium-rich spinel is 80: 20;
2) fine powder part
12 parts of the plate diamond spar of≤0.088mm and magnesium-rich spinel fine powders, the part by weight of plate diamond spar and magnesium-rich spinel are 45: 55;
3) admixture
One 9 parts of combined binders, combined binder one is mixed and is processed by Alpha-alumina micro mist 55 weight parts, fine silica powder 18 weight parts;
2 5.5 parts of combined binders, combined binder two adds water by phosphoric acid salt 18 weight parts, halogenide 30 weight parts, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
0.55 part of composite additive by mixed rare-earth oxide 65 weight parts, lanthanum trioxide 28 weight parts, cerium oxide 28 weight parts, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is with embodiment 1.
When this product is built by laying bricks or stones at the scene, should be equipped with the mud of suitable expansion character.
Embodiment 5
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is 30 parts in the premium high-alumina alumina of 5-3mm, and granularity is 25 parts of the sub-white corundums of 3-1mm, and granularity is 20 parts of the plate diamond spars of 1-0.088mm;
2) fine powder part
15 parts of the plate diamond spar of≤0.088mm and magnesium-rich spinel fine powders, the part by weight of said plate diamond spar and magnesium-rich spinel are 1: 1;
3) admixture
One 8 parts of combined binders, combined binder one is mixed and is processed by Alpha-alumina micro mist 50 weight parts, fine silica powder 15 weight parts;
25 parts of combined binders, combined binder two adds water by phosphoric acid salt 15 weight parts, halogenide 30 weight parts, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
0.5 part of composite additive by mixed rare-earth oxide 55 weight parts, lanthanum trioxide 25 weight parts, cerium oxide 20 weight parts, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is with embodiment 1.
Embodiment 6
A kind of method of producing high-strength compact shaped steel non-carbon residue feather edge brick, it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is 20 parts of premium high-alumina alumina and the sub-white corundum of 5-3mm, and granularity is 30 parts of the sub-white corundums of 3-1mm, and granularity is 25 parts of the plate diamond spars of 1-0.088mm;
2) fine powder part
12 parts of the plate diamond spar of≤0.088mm and magnesium-rich spinel fine powders, the part by weight of said plate diamond spar and magnesium-rich spinel are 3: 2;
3) admixture
One 10 parts of combined binders, combined binder one is mixed and is processed by Alpha-alumina micro mist 40 weight parts, fine silica powder 20 weight parts;
24 parts of combined binders, combined binder two adds water by phosphoric acid salt 15 weight parts, halogenide 15 weight parts, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
0.4 part of composite additive by mixed rare-earth oxide 60 weight parts, lanthanum trioxide 25 weight parts, cerium oxide 25 weight parts, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is:
Among the above embodiment, the raw material index of employing sees the following form:
Claims (1)
1. method of producing high-strength compact shaped steel non-carbon residue feather edge brick is characterized in that it is made up of the following raw materials in parts by weight proportioning:
1) aggregate part
Granularity is premium high-alumina alumina and sub-white corundum 20-30 part of 5-3mm, and the part by weight of said premium high-alumina alumina and sub-white corundum is (50-100): (50-0);
Granularity is plate diamond spar and sub-white corundum 20-30 part of 3-1mm, and the part by weight of said plate diamond spar and sub-white corundum is (0-50): (100-50);
Granularity is plate diamond spar and magnesium-rich spinel 15-25 part of 1-0.088mm, and the part by weight of said plate diamond spar and magnesium-rich spinel is (60-100): (40-0);
2) fine powder part
The plate diamond spar of≤0.088mm and magnesium-rich spinel fine powder 10-15 part, the part by weight of said plate diamond spar and magnesium-rich spinel fine powder is (60-40): (40-60);
3) admixture
Combined binder one 6-10 part, combined binder one is mixed and is processed by Alpha-alumina micro mist 25-65 weight part, fine silica powder 10-20 weight part;
Combined binder two 4-6 parts, combined binder two adds water by phosphoric acid salt 10-20 weight part, halogenide 15-35 weight part, mixes and processes 20-60 degree centigrade saturated solution, is combined binder two;
Composite additive 0.4-0.6 part by mixed rare-earth oxide 40-75 weight part, lanthanum trioxide 15-30 weight part, cerium oxide 10-30 weight part, mixes and processes;
The method of producing high-strength compact shaped steel non-carbon residue feather edge brick is:
By said part by weight aggregate is partly put in the high speed mixing roll, mixed once 2-6min adds combined binder two, and secondary mixing 2-6min adds combined binder one, composite additive, fine powder part then, three mixing 5-15min; Mechanical pressing, drying, selection, check, packing warehouse-in are promptly produced weave construction densification more when high temperature uses then, and the novel ladle working lining that volume density is higher does not have carbon brick with the high life.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512904A (en) * | 2017-08-29 | 2017-12-26 | 浙江攀盛冶金材料有限公司 | A kind of high-strength steel non-carbon residue feather edge brick |
| CN112479688A (en) * | 2020-11-27 | 2021-03-12 | 云南濮耐昆钢高温材料有限公司 | Prevent blockking up gas pocket high dispersion air brick for anode furnace copper smelting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239829A (en) * | 2008-03-11 | 2008-08-13 | 郑州市鑫磊冶金材料有限公司 | High-performance fire-resistant abrasion-proof composite material |
| CN101863676A (en) * | 2010-06-18 | 2010-10-20 | 中钢集团洛阳耐火材料研究院有限公司 | Non-carbon residue feather edge brick for refining steel ladle and preparation method thereof |
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- 2011-12-31 CN CN 201110456915 patent/CN102515809B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239829A (en) * | 2008-03-11 | 2008-08-13 | 郑州市鑫磊冶金材料有限公司 | High-performance fire-resistant abrasion-proof composite material |
| CN101863676A (en) * | 2010-06-18 | 2010-10-20 | 中钢集团洛阳耐火材料研究院有限公司 | Non-carbon residue feather edge brick for refining steel ladle and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512904A (en) * | 2017-08-29 | 2017-12-26 | 浙江攀盛冶金材料有限公司 | A kind of high-strength steel non-carbon residue feather edge brick |
| CN112479688A (en) * | 2020-11-27 | 2021-03-12 | 云南濮耐昆钢高温材料有限公司 | Prevent blockking up gas pocket high dispersion air brick for anode furnace copper smelting |
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| CN102515809B (en) | 2013-06-26 |
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