CN103193494B - Technological process for preparation of converter sliding plate inlaid zirconium product - Google Patents
Technological process for preparation of converter sliding plate inlaid zirconium product Download PDFInfo
- Publication number
- CN103193494B CN103193494B CN201310128834.6A CN201310128834A CN103193494B CN 103193494 B CN103193494 B CN 103193494B CN 201310128834 A CN201310128834 A CN 201310128834A CN 103193494 B CN103193494 B CN 103193494B
- Authority
- CN
- China
- Prior art keywords
- particle
- product
- zirconium
- base substrate
- sliding plate
- 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.)
- Active
Links
Abstract
The invention discloses a technological process for preparation of converter sliding plate inlaid zirconium product. The technological process comprises the following steps of: mixing and milling raw materials; blanking by using the raw materials; sintering; deironing; preparing powder; mixing; pelleting; mechanical pressing and drying; cellaring; high-temperature sintering; taking out from cellar; inspection; packaging, and obtaining the finished product. Basic magnesium carbonate and iridium oxide added in the technological process provided by the invention can enhance the stability of zirconia, and consequentially, the normal temperature compression strength, the thermal shock stability and the scouring resistance of the product are improved remarkably. The accessory added during the mixing process guarantees the formation density and the blank strength, the product shrinkage is controlled to be 3-10%, the product shrinking percentage can be regulated by regulation on the dosage of the powder and the magnesium-zirconium powder, moreover, unnecessary impurities are eliminated in the technology, cracking of zirconium product is reduced effectively, and the quality of product is guaranteed.
Description
Technical field
The invention belongs to zirconium product process for processing technical field, be specifically related to a kind of converter furnace sliding plate and inlay technical process prepared by zirconium product.
Background technology
The zirconium product using is at present all that use electric smelting stabilizing zirconia is main raw material, adds a small amount of electric smelting monoclinic zirconia or desiliconization zirconium white, compression moulding, and the poor stability of this method product, and also work-ing life is short.The structure of existing zirconium product is single, although increased titanium dioxide, calcium oxide etc., increase certain stability, but its physical strength is poor, and wear resistance is inadequate, a little less than scour resistance, in addition, owing to there is no deimpurity step in technological process, make product foreign matter content high, affect the quality of product.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, provide a kind of converter furnace sliding plate to inlay technical process prepared by zirconium product.
Technical scheme: a kind of converter furnace sliding plate provided by the invention is inlayed technical process prepared by zirconium product, and described process flow steps is:
1) raw material mix grinding: be that the magnesium basic carbonate of 85%-88% zirconium dioxide, 10%-12% and the iridium oxide mix grinding of 2%-3% obtain fine powder by massfraction;
2) raw material base: add bonding agent in above-mentioned fine powder, and with stirrer stirring, be pressed into raw material base substrate in mould;
3) burn till: raw material base substrate is put into cellar for storing things stove, burn till at 1350-1400 DEG C, insulation 9-10 hour, total firing time is within 45-50 hour, to obtain sintered body;
4) sintered body is processed to the particle that obtains different-grain diameter with the broken machine of jaw, twin rollers, sieve apparatus successively, collected the particle and the particle that is less than 0.2mm granularity of 0.2-0.5mm granularity.
5) deironing: the particle of 0.2-0.5mm granularity is processed with acid, and washing and drying obtains particle A, with sour, the particle that is less than 0.2mm granularity is processed, and washing and drying obtains particle B;
6) preparation: particle B is worn into powder with ball mill, and 95% obtains powder material B by 600 orders;
7) mixing: by adding 30-40% powder material B and batching A in 60-70% particle A, stir 30-40 minute, the sieve aperture specification of sieving is 10 orders, and bundle material obtains batch mixing A for 10 hours above;
8) granulation: batch mixing A is pressed into base substrate A, pulverizes base substrate A, crosses 2.5mm sieve screening obtain mixed material B with sieve apparatus with twin rollers with hydropress;
9) mechanical pressing: installation mold, mixed material B is suppressed and obtained sheet-shaped blank B or ring-type base substrate B with hydropress;
10) dry: sheet-shaped blank B or ring-type base substrate B are packed in loft drier, drying and warning speed 5-8 DEG C/h, 150-160 DEG C of insulation 7-8 hour, rate of weight loss, at 2.0%-2.5%, obtains sheet-shaped blank C or ring-type base substrate C;
11) dress cellar for storing things: sheet-shaped blank C side is put and put 10-15 ° of angle, retain 2-3mm distance between every; Ring-type base substrate C builds dress, is highly controlled at 50-60cm;
12) high temperature sintering: temperature rise rate 30-40 DEG C/h in cellar for storing things, 1700-1750 DEG C is burnt till, and is incubated 10 hours, firing time 70-75 hour, cooling 86-96 hour;
13) go out cellar for storing things: close after burner, in the time that furnace temperature drops to 600 DEG C, wicket is opened, in the time that furnace temperature drops to 200 DEG C again, kiln car can be pulled out outside burner hearth, block fire door with asbestos tile;
14) inspection;
15) packaging gets final product to obtain finished product.
In order to mix, the mix grinding time in described step 1) is 14-16 hour, described fine powder ratio of grinding media to material 2:1, and fine powder fineness 95% is by 400 orders; In order to increase the intensity of base substrate, described step 2) in the bonding agent chemical paste that is 2.5-3%, described chemical paste is that carboxymethyl cellulose and water modulation form, wherein, the mass ratio of carboxymethyl cellulose and water is 1:10; In order to remove impurity wherein, particularly ferro element, the acid in described step 5) is 15% hydrochloric acid, soaks therein more than 12 hours, uses deionized water rinsing 2 times, 120 DEG C of dry particle A and particle B of obtaining above for 12 hours; Wherein, step 6) is to burn till intensity in order to improve, in described step 7) batching A be that 5-20% magnesium zirconium powder and 2.5-3.5% resol are to be controlled at 8-10% in order to ensure that compact density, blank strength product shrink, by adjusting the add-on capable of regulating contractibility of powder and magnesium zirconium powder; Described step 11), 12), 13) in cellar for storing things be 10m
3shuttle kiln; The finished product density obtaining in described step 15) is 5.0-5.4g/cm
3, normal temperature is withstand voltage at 350-550Mpa.
Beneficial effect: compared with prior art, the present invention has the following advantages: the magnesium basic carbonate adding in technical process of the present invention and iridium oxide can strengthen zirconic stability, and the cold crushing strength of product, thermal shock resistance, scour resistance are significantly increased.The batching increasing in mixing process ensures compact density, blank strength, product shrinks and is controlled at 8-10%, by adjusting the add-on capable of regulating contractibility of powder and magnesium zirconium powder, and in this technique, remove unnecessary impurity, effectively reduce zirconium product cracking, ensure the quality of product, zirconium plate prepared by the present invention or zirconium ring are embedded on zirconium white converter furnace sliding plate, not only make greatly improve the work-ing life of converter furnace sliding plate, more than having brought up to 20 stoves from 8 original stoves, and pushing off the slag success ratio is 100%, under converter, the quantity of slag is reduced to 2.2kg by ton steel 12kg, the recovery rate of alloy and reductor improves more than 2% than slag-blocking ball.
Embodiment
Embodiment 1:
Zirconium white converter furnace sliding plate is inlayed a technical process prepared by zirconium plate, and described process flow steps is:
1) raw material mix grinding: be that 85% zirconium dioxide, 12% magnesium basic carbonate and 3% iridium oxide mix grinding obtain fine powder for 14 hours by massfraction; Fine powder ratio of grinding media to material 2:1, fine powder fineness 95% is by 400 orders;
2) raw material base: adding 2.5 chemical paste, described chemical paste in above-mentioned fine powder is that carboxymethyl cellulose and water modulation form, and wherein, the mass ratio of carboxymethyl cellulose and water is 1:10, and with stirrer stirring, is pressed into raw material base substrate in mould;
3) burn till: raw material base substrate is put into cellar for storing things stove, burn till at 1350 DEG C, be incubated 9 hours, total firing time is within 45 hours, to obtain sintered body;
4) particle preparation: sintered body is processed to the particle that obtains different-grain diameter with the broken machine of jaw, twin rollers, sieve apparatus successively, collected the particle of 0.2mm-0.5mm granularity and the particle of the following granularity of 0.2mm;
5) deironing: the particle of 0.2mm-0.5mm granularity is processed with acid, and washing and drying obtains particle A, with sour, the particle of the following granularity of 0.2mm is processed, and washing and drying obtains particle B;
6) preparation: particle B is worn into powder with ball mill, and 95% obtains powder material B by 600 orders;
7) mixing: by adding 30% powder material B and 5% magnesium zirconium powder and 2.5% resol in 60% particle A, stir 40 minutes, the sieve aperture specification of sieving is 10 orders, bundle material obtains batch mixing A for 10 hours above;
8) granulation: batch mixing A is pressed into base substrate A, pulverizes base substrate A, crosses 2.5mm sieve screening obtain mixed material B with sieve apparatus with twin rollers with hydropress;
9) mechanical pressing: tabular mould is installed, mixed material B is suppressed and obtained sheet-shaped blank B with hydropress;
10) dry: sheet-shaped blank B is packed in loft drier, 5 DEG C/h of drying and warning speed, 150 DEG C are incubated 7 hours, and rate of weight loss, 2.0%, obtains sheet-shaped blank C;
11) dress cellar for storing things: sheet-shaped blank C side is put and put 10 ° of angles, retain 2mm distance between every;
12) high temperature sintering: 30 DEG C/h of temperature rise rates in cellar for storing things, 1700 DEG C are burnt till, and are incubated 10 hours, firing time 70 hours, cooling 86 hours;
13) go out cellar for storing things: close after burner, in the time that furnace temperature drops to 600 DEG C, wicket is opened, in the time that furnace temperature drops to 200 DEG C again, kiln car can be pulled out outside burner hearth, block fire door with asbestos tile;
14) inspection;
15) packaging gets final product to such an extent that zirconium white converter furnace sliding plate is inlayed zirconium plate.
Wherein, in described step 9) mechanical pressing the density of sheet-shaped blank B be 4.2g/cm
3, smooth surface is smooth, there is no layering, crackle, and unfilled corner and fall limit, in described step 14), in checking procedure, sampling experiment carries out the heat 1100 DEG C of water-cooleds of shaking and is greater than 3 times, and the density of qualified product is 5.0 g/cm
3, in checkout procedure, normal temperature carrying capacity is 350MPa.Described step 11), 12), 13) in cellar for storing things be 10m
3shuttle kiln.
Embodiment 2:
Zirconium white converter furnace sliding plate is inlayed a technical process prepared by zirconium ring, and described process flow steps is:
1) raw material mix grinding: be that 88% zirconium dioxide, 10% magnesium basic carbonate and 2% iridium oxide mix grinding obtain fine powder for 16 hours by massfraction, described fine powder ratio of grinding media to material 2:1, fine powder fineness 95% is by 400 orders;
2) raw material base: adding 3% chemical paste, described chemical paste in above-mentioned fine powder is that carboxymethyl cellulose and water modulation form, and wherein, the mass ratio of carboxymethyl cellulose and water is 1:10, and with stirrer stirring, is pressed into raw material base substrate in mould;
3) burn till: raw material base substrate is put into cellar for storing things stove, burn till at 1400 DEG C, be incubated 10 hours, total firing time is within 50 hours, to obtain sintered body;
4) particle preparation: sintered body is processed to the particle that obtains different-grain diameter with the broken machine of jaw, twin rollers, sieve apparatus successively, collected the particle of 0.2-0.5mm granularity and the particle of the following granularity of 0.2mm;
5) deironing: the particle of 0.2-0.5mm granularity is processed with acid, and washing and drying obtains particle A, with sour, the particle of the following granularity of 0.2mm is processed, and washing and drying obtains particle B;
6) preparation: particle B is worn into powder with ball mill, and 95% obtains powder material B by 600 orders;
7) mixing: by 70% particle A, add 40% powder material B and
And 20% magnesium zirconium powder and 3.5% resol, stirring 30 minutes, the sieve aperture specification of sieving is 10 orders, bundle material obtains batch mixing A for 10 hours above;
8) granulation: batch mixing A is pressed into base substrate A, pulverizes base substrate A, crosses 2.5mm sieve screening obtain mixed material B with sieve apparatus with twin rollers with hydropress;
9) mechanical pressing: annular die is installed, mixed material B is suppressed and obtained ring-type base substrate B with hydropress;
10) dry: ring-type base substrate B is packed in loft drier, 8 DEG C/h of drying and warning speed, 160 DEG C are incubated 8 hours, and rate of weight loss, 2.5%, obtains ring-type base substrate C;
11) dress cellar for storing things: ring-type base substrate C is built to dress, be highly controlled at 60cm;
12) high temperature sintering: 40 DEG C/h of temperature rise rates in cellar for storing things, 1750 DEG C are burnt till, and are incubated 10 hours, firing time 75 hours, cooling 96 hours;
13) go out cellar for storing things: close after burner, in the time that furnace temperature drops to 600 DEG C, wicket is opened, in the time that furnace temperature drops to 200 DEG C again, kiln car can be pulled out outside burner hearth, block fire door with asbestos tile;
14) inspection;
15) packaging gets final product to such an extent that zirconium white converter furnace sliding plate is inlayed zirconium ring.
In described step 9) mechanical pressing the density 4.3g/cm of sheet-shaped blank B
3, smooth surface is smooth, there is no layering, crackle, and unfilled corner and fall limit, in described step 14), in checking procedure, sampling experiment carries out the heat 1100 DEG C of water-cooleds of shaking and is greater than 3 times, and the density of qualified product is for being 5.4 g/cm
3, in checkout procedure, can carrying capacity be 550MPa.
Embodiment 3:
Zirconium white converter furnace sliding plate is inlayed a technical process prepared by zirconium plate, and described process flow steps is:
1) raw material mix grinding: be that 86% zirconium dioxide, 11% magnesium basic carbonate and 3% iridium oxide mix grinding obtain fine powder for 14 hours by massfraction, fine powder ratio of grinding media to material 2:1, fine powder fineness 95% is by 400 orders;
2) raw material base: adding 2.8% chemical paste, described chemical paste in above-mentioned fine powder is that carboxymethyl cellulose and water modulation form, and wherein, the mass ratio of carboxymethyl cellulose and water is 1:10, and with stirrer stirring, is pressed into raw material base substrate in mould;
3) burn till: raw material base substrate is put into cellar for storing things stove, burn till at 1360 DEG C, be incubated 9.5 hours, total firing time is within 48 hours, to obtain sintered body;
4) particle preparation: sintered body is processed to the particle that obtains different-grain diameter with the broken machine of jaw, twin rollers, sieve apparatus successively, collected the particle of 0.2mm-0.5mm granularity and the particle of the following granularity of 0.2mm;
5) deironing: the particle of 0.2mm-0.5mm granularity is processed with acid, and washing and drying obtains particle A, with sour, the particle of the following granularity of 0.2mm is processed, and washing and drying obtains particle B;
6) preparation: particle B is worn into powder with ball mill, and 95% obtains powder material B by 600 orders;
7) mixing: by adding 35% powder material B and 10% magnesium zirconium powder and 3% resol in 65% particle A, stir 35 minutes, the sieve aperture specification of sieving is 10 orders, bundle material obtains batch mixing A for 10 hours above;
8) granulation: batch mixing A is pressed into base substrate A, pulverizes base substrate A, crosses 2.5mm sieve screening obtain mixed material B with sieve apparatus with twin rollers with hydropress;
9) mechanical pressing: tabular mould is installed, mixed material B is suppressed and obtained sheet-shaped blank B with hydropress;
10) dry: sheet-shaped blank B is packed in loft drier, 6 DEG C/h of drying and warning speed, 155 DEG C are incubated 7.5 hours, and rate of weight loss, 2.25%, obtains sheet-shaped blank C;
11) dress cellar for storing things: sheet-shaped blank C side is put and put 13 ° of angles, retain 2.5mm distance between every;
12) high temperature sintering: 35 DEG C/h of temperature rise rates in cellar for storing things, 1725 DEG C are burnt till, and are incubated 10 hours, firing time 73 hours, cooling 90 hours;
13) go out cellar for storing things: close after burner, in the time that furnace temperature drops to 600 DEG C, wicket is opened, in the time that furnace temperature drops to 200 DEG C again, kiln car can be pulled out outside burner hearth, block fire door with asbestos tile;
14) inspection;
15) packaging gets final product to such an extent that zirconium white converter furnace sliding plate is inlayed zirconium plate.
In described step 9) mechanical pressing the density 4.5g/cm of sheet-shaped blank B
3, smooth surface is smooth, there is no layering, crackle, and unfilled corner and fall limit, in described step 14), in checking procedure, sampling experiment carries out the heat 1100 DEG C of water-cooleds of shaking and is greater than 3 times, and the density of qualified product is 5.2 g/cm
3, in checkout procedure, can carrying capacity be 400MPa.
It is as follows that the zirconium white converter furnace sliding plate of embodiment 1 ~ 3 preparation is inlayed the performance test data that zirconium plate carries out for converter furnace sliding plate:
| Embodiment | Volume density g/cm 3 | Apparent porosity % | Melting loss reaming speed, mm/ch |
| 1 | 5.0 | 10.5 | 1.8 |
| 2 | 5.4 | 5.8 | 1.1 |
| 3 | 5.2 | 7.4 | 1.5 |
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. converter furnace sliding plate is inlayed a technical process prepared by zirconium product, it is characterized in that: described process flow steps is:
1) raw material mix grinding: be that the magnesium basic carbonate of 85%-88% zirconium dioxide, 10%-12% and the iridium oxide mix grinding of 2%-3% obtain fine powder by massfraction;
2) raw material base: add bonding agent in above-mentioned fine powder, and with stirrer stirring, be pressed into raw material base substrate in mould;
3) burn till: raw material base substrate is put into cellar for storing things stove, burn till at 1350-1400 DEG C, insulation 9-10 hour, total firing time is within 45-50 hour, to obtain sintered body;
4) particle preparation: sintered body is processed to the particle that obtains different-grain diameter with the broken machine of jaw, twin rollers, sieve apparatus successively, collected the particle and the particle that is less than 0.2mm granularity of 0.2-0.5mm granularity;
5) deironing: the particle of 0.2-0.5mm granularity is processed with acid, and washing and drying obtains particle A, with sour, the particle that is less than 0.2mm granularity is processed, and washing and drying obtains particle B;
6) preparation: particle B is worn into powder with ball mill, and 95% obtains powder material B by 600 orders;
7) mixing: by adding 30-40% powder material B and batching A in 60-70% particle A, stir 30-40 minute, the sieve aperture specification of sieving is 10 orders, and bundle material obtains batch mixing A for 10 hours above; Described batching A is 5-20% magnesium zirconium powder and 2.5-3.5% resol;
8) granulation: batch mixing A is pressed into base substrate A, pulverizes base substrate A, crosses 2.5mm sieve screening obtain mixed material B with sieve apparatus with twin rollers with hydropress;
9) mechanical pressing: installation mold, mixed material B is suppressed and obtained sheet-shaped blank B or ring-type base substrate B with hydropress;
10) dry: sheet-shaped blank B or ring-type base substrate B are packed in loft drier, drying and warning speed 5-8 DEG C/h, 150-160 DEG C of insulation 7-8 hour, rate of weight loss, at 2.0%-2.5%, obtains sheet-shaped blank C or ring-type base substrate C;
11) dress cellar for storing things: sheet-shaped blank C side is put and put 10-15 ° of angle, retain 2-3mm distance between every; Ring-type base substrate C builds dress, is highly controlled at 50-60cm;
12) high temperature sintering: temperature rise rate 30-40 DEG C/h in cellar for storing things, 1700-1750 DEG C is burnt till, and is incubated 10 hours, firing time 70-75 hour, cooling 86-96 hour;
13) go out cellar for storing things: close after burner, in the time that furnace temperature drops to 600 DEG C, wicket is opened, in the time that furnace temperature drops to 200 DEG C again, kiln car is pulled out outside burner hearth, block fire door with asbestos tile;
14) inspection;
15) packaging gets final product to obtain finished product.
2. a kind of converter furnace sliding plate according to claim 1 is inlayed technical process prepared by zirconium product, it is characterized in that: the mix grinding time in described step 1) is 14-16 hour, described fine powder ratio of grinding media to material 2:1, and fine powder fineness 95% is by 400 orders.
3. a kind of converter furnace sliding plate according to claim 1 is inlayed technical process prepared by zirconium product, it is characterized in that: described step 2) in the bonding agent chemical paste that is 2.5-3%, described chemical paste is that carboxymethyl cellulose and water modulation form, wherein, the mass ratio of carboxymethyl cellulose and water is 1:10.
4. a kind of converter furnace sliding plate according to claim 1 is inlayed technical process prepared by zirconium product, it is characterized in that: the acid in described step 5) is 15% hydrochloric acid, soak therein more than 12 hours, use deionized water rinsing 2 times, 120 DEG C of dry particle A and particle B of obtaining above for 12 hours.
5. a kind of converter furnace sliding plate according to claim 1 is inlayed technical process prepared by zirconium product, it is characterized in that: described step 11), 12), 13) in cellar for storing things be 10m
3shuttle kiln.
6. a kind of converter furnace sliding plate according to claim 1 is inlayed technical process prepared by zirconium product, it is characterized in that: the finished product density obtaining in described step 15) is 5.0-5.4g/cm
3, normal temperature is withstand voltage at 350-550MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128834.6A CN103193494B (en) | 2013-04-15 | 2013-04-15 | Technological process for preparation of converter sliding plate inlaid zirconium product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310128834.6A CN103193494B (en) | 2013-04-15 | 2013-04-15 | Technological process for preparation of converter sliding plate inlaid zirconium product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103193494A CN103193494A (en) | 2013-07-10 |
| CN103193494B true CN103193494B (en) | 2014-08-06 |
Family
ID=48716336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310128834.6A Active CN103193494B (en) | 2013-04-15 | 2013-04-15 | Technological process for preparation of converter sliding plate inlaid zirconium product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103193494B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105601275A (en) * | 2016-01-13 | 2016-05-25 | 太仓宏达俊盟新材料有限公司 | Manufacture process of immersive elongated-nozzle zirconia flow control |
| CN106396675A (en) * | 2016-08-31 | 2017-02-15 | 太仓宏达俊盟新材料有限公司 | Preparation method and application of low energy consumption partially-stable zirconia |
-
2013
- 2013-04-15 CN CN201310128834.6A patent/CN103193494B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| Y-TZP纳米陶瓷的制备、结构及力学性能;冶银平等;《兰州理工大学学报》;20071031;第33卷(第5期);第7页1.实验部分 * |
| 冶银平等.Y-TZP纳米陶瓷的制备、结构及力学性能.《兰州理工大学学报》.2007,第33卷(第5期),第7页1.实验部分. |
| 樊传刚等.（MgO）0.1-x(CaO)x(ZrO2)0.9陶瓷的相组成、力学与抗热震性能研究.《耐火材料》.2007,第41卷(第2期),第104页1.2试样制备-第105页1.3性能测试. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103193494A (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102161586B (en) | Method for preparing boron carbide ceramic powder with controllable particle size | |
| CN107352977A (en) | A kind of slag line brick for ladle and preparation method | |
| CN102381882B (en) | Zirconium oxide refractory with homogeneous micro-crystallized structure and preparation method thereof | |
| CN103880441A (en) | Microporous lightweight corundum refractory aggregate and preparation method thereof | |
| CN103193494B (en) | Technological process for preparation of converter sliding plate inlaid zirconium product | |
| CN101591190B (en) | Novel Si3N4-SiC-C refractory brick for sidewall of aluminum electrolysis bath and preparation method thereof | |
| CN103833392A (en) | Preparation method for sintered corundum | |
| CN101942561A (en) | Method for preparing aluminum-silicon-ferrum alloy from coal gangue | |
| CN111072375A (en) | Preparation method of aluminum oxide grinding balls | |
| CN110483023A (en) | A kind of microporous corundum brick and preparation method thereof | |
| CN101492297A (en) | Bottom blowing orienting stephanoporate air brick body for electric furnace and method of producing the same | |
| CN103193493B (en) | Zirconium oxide tundish pure zirconium water gap and manufacturing process thereof | |
| CN107434404A (en) | A kind of zirconium composite high-performance electric smelting magnesia calcium zirconium brick and its manufacture method | |
| CN105036699B (en) | High-strength and durable ganged brick prepared by utilizing aluminium scruff ash | |
| CN103193481B (en) | Preparation method of zirconium oxide product | |
| CN104446560B (en) | A kind of preparation method of zirconium white nozzle brick | |
| CN106957957B (en) | A method of preparing fused magnesite and the pig iron with waste magnesia carbon brick and steel rolling iron sheet | |
| CN110423100A (en) | A kind of high-purity magnesia carbon brick and preparation method thereof adding magnesium carbon ultrafine powder | |
| CN108911721A (en) | Aggregate type Chromium oxide fireproof material and preparation method thereof | |
| CN108546092A (en) | A kind of preparation method of blast furnace silicon nitride gunning refractory | |
| CN107540389A (en) | A kind of carbon anode roasting furnace andalusite brick and preparation method thereof | |
| CN105601275A (en) | Manufacture process of immersive elongated-nozzle zirconia flow control | |
| CN102268541A (en) | Cold-pressed pellets for smelting ferromanganese and preparation method for cold-pressed pellets | |
| CN206828596U (en) | A kind of system for preparing sintering chromite | |
| CN103757169B (en) | A kind of process iron scale Shaft Furnace Direct Reduction Process |
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 |